Do-it-yourself electronic ignition for UAZ. Electrical equipment of UAZ vehicles

UAZ car ignition system

Device

The diagram of the ignition system is shown in fig. 2. The ignition system includes: battery, alternator, ignition coil, ignition distributor, spark plugs, wires and ignition switch.

Rice. 1. Scheme for switching on an additional starter relay for checking and adjusting: 1 - battery; 2 - rheostat; 3 - control lamp; 4 - relay; 5-volt meter; 6 - switch

Rice. 2. Scheme of the ignition system: 1 - battery; 2 - relay-regulator; 3 - generator; 4 - spark plug; 5 - distributor; 6 - ignition coil; 7 - ignition and starter switch; 8 - ammeter; 9 - starter; 10 - additional starter relay; 11 - mass switch

Rice. 3. Ignition coil: 1 - high voltage screw terminal; 2 - cover; 3 - high voltage terminal; 4 - contact spring; 5. - low voltage terminal; 6 - sealing gasket; 7 - metal plates to increase the magnetic flux; 8 - fastening bracket; 9 - contact plate; 10 - primary winding; 11 - secondary winding; 12 - body; 13 - insulating gaskets; 14 - insulator; 15 - iron core; 16 - insulating mass; 17 - resistance insulator; 18 - additional resistance; 19 - additional resistance mounting plate; 20 - resistance fastening screw

Rice. 4. Ignition distributor: 1 - low voltage terminal; 2 - capacitor; 3 - filter brush; 4 - thrust of the vacuum regulator; 5 - vacuum regulator; "--diaphragm; 7, 17 and 25 - springs; 8 - bearing; 9 - roller; 10 - body; 11 - ball bearing; 12 - fixed breaker panel; 13 - movable panel; 14 - spring cover holder; /5 - cover; 16 - high voltage terminal; 18 - central contact with suppressive resistance; 19 - rotor; 20 - current-carrying plate; 21 - cam; 22 - cam plate; 23 - weight pin; 24 - centrifugal regulator weight; 26 - roller plate; 27 and 28 - octane corrector plates; 29 - nuts; 30 - locking screw; 31 - breaker spring; 32 - plate with fixed contact; 33 - contacts; 34 - breaker lever; 35 - adjusting eccentric

The B7-A ignition coil is a transformer that converts the low voltage of the primary circuit into a high voltage of the secondary circuit, which is necessary to produce a spark between the spark plug electrodes and ignite the working mixture in the engine cylinders.

The connection of the ignition coil to the circuit of electrical equipment is shown in fig. 2. The current passes into the primary winding of the coil through an additional resistance, which automatically turns off when the engine is started by the starter, and the current enters the primary winding, bypassing it, thereby amplifying the spark and facilitating the engine start.

Rice. Fig. 5. Operation of the centrifugal ignition timing controller: a - at idle speed of the engine; b - at the maximum number of revolutions of the engine crankshaft; 1 - cam; 2 - weight; 3 - cam plate; 4 - roller; 5 - weight pin, 6 - spring

The RZ-B ignition distributor is installed on the left side of the cylinder block and is driven by the oil pump roller.

The ignition distributor is designed to interrupt the low voltage current in the ignition coil circuit, distribute high voltage current pulses to the engine cylinder plugs and ensure the required ignition timing of the mixture, depending on the engine speed and load.

The distributor breaker consists of a plate with a fixed contact, a lever with a movable contact and a four-sided cam, which, while rotating, opens the contacts, running its edges against the lever pad. The gap between the contacts of the breaker is regulated by an eccentric. In parallel with the contacts, a capacitor of the KN-4 type with a capacity of 0.17-0.25 microfarads is connected.

The high voltage current distributor consists of a rotor and a cover with electrodes, which are connected by wires to the coil and candles. The distributor rotor, during rotation, transmits high-voltage current pulses from the secondary winding of the ignition coil to the candles in accordance with. the order of the cylinders.

The distributor has centrifugal and vacuum regulators that automatically change the ignition timing of the octane corrector for manual adjustment of the ignition angle depending on the octane number of the gasoline used.

The centrifugal regulator changes the ignition angle depending on the engine speed (or distributor shaft).

The vacuum regulator changes the ignition angle depending on the engine load (vacuum in the intake pipe).

Rice. 6. The operation of the vacuum ignition timing regulator: a - the vacuum in the carburetor is small; b - the vacuum in the carburetor is large: 1 - the fitting of the tube from the carburetor; 2 - adjusting washer; 3 - spring; 4 - vacuum regulator cover; 5 - diaphragm; 6 - housing of the vacuum regulator; 7 - regulator fastening screw; S - thrust; 9 - pin; 10 - movable breaker panel; 11 - contacts; 12 - interrupter lever; 13- cam

The octane corrector provides a change in the ignition angle within + 10 ° along the angle of rotation of the crankshaft.

Spark plugs A14U of a non-separable design have a length of the screwed part of the body 14 + 0.5 mm and a metric thread M14X1.25. The gap between the electrodes of the candle is 0.8-0.95 mm.

When adjusting the gap between the electrodes of the spark plugs, it is necessary to bend only the side electrode, since when the central electrode is bent, the spark plug insulator bursts.

The ignition and starter switch type VK21-K (Fig. 150) is used to turn on and off the current in the primary circuit of the ignition system and to turn on the starter and radio. The switch is installed on the instrument panel.

On the plastic base of the lock switch there are terminals AM (ammeter), short circuit (ignition coil), ST (starter) and PR (receiver). Terminal AM is under constant voltage.

When the key is turned to the first right position, the AM terminal is connected to the KZ and PR terminals - the ignition of the circuit of control devices, the wiper, the radio, the windshield blower, the cab and body heating fans are switched on. The radio receiver is installed only on the UAZ-452V bus.

When the key is turned to the right extreme position, the AM terminal is connected to the KZ and ST- terminals, the ignition and starter are turned on.

Rice. 7. Spark plug with suppressive resistance:
1 - case of suppressive resistance; 2- contact; 3-contact spring; 4 - resistance; 5 - central electrode; 6 - retaining spring; 7 - insulator; 8 - sealant; 9 - candle body; 10 - gasket; 11 - side electrode

Rice. 8. Ignition and starter switch: 1 - insulator with contacts; 2 - contacts; 3 - movable contact plate; 4 - terminal AM-, 5-terminal Kz; 6 - terminal PR; 7 - contact plate spring; 8 - rotor; 9 - rotor spring; 10 - body; 11 - locking cylinder; 12 - locking larvae; 13 - retaining ring; 14 - key; 15 - spring; 16 - locking balls; 17 - nut for fastening the lock to the panel

When the key is turned to the left, the AM terminal is connected to the PR terminal - the radio is turned on.

Maintenance

With TO-1 it is necessary:
- check the reliability of electrical connections and fastening devices of the ignition system;
—- lubricate the distributor roller by turning the cover of the cap oiler one turn. Put one drop of oil used for the engine on the axis of the chopper lever, 1-2 drops on the cam brush and 3-4 drops on the cam bush (after removing the rotor and the felt under it). When lubricating the cam and the breaker shaft, care must be taken not to get oil on the breaker contacts.

During TO-2, in addition to the work provided for by TO-1, perform the following work.

Check the condition of the low and high voltage wires and clean them of dust and dirt.

Remove the spark plugs, clean them of carbon deposits and adjust the gaps between the electrodes.

Inspect the distributor contacts, remove dirt and oil from the contacts by wiping them with chamois leather slightly moistened with gasoline. Then wipe them with a clean, dry chamois or cloth that does not leave fibers on the contacts.

Burnt or oxidized contacts must be carefully cleaned with a special abrasive plate included in the driver's tool kit, or with fine glass sandpaper.

After stripping, the contacts must be wiped with suede slightly moistened with gasoline, and a normal gap between them should be established.

Check the gap between the breaker contacts with a feeler gauge and, if it differs by more than 0.05 mm from the nominal (0.35 - 0.45 mm), adjust it.

To adjust the gap, it is necessary to turn the crankshaft of the engine with the handle so that the breaker cam completely opens the contacts. Then loosen the screw securing the fixed contact plate and, turning the head of the adjusting eccentric with a screwdriver, move the plate, and with it the fixed contact in the required direction until the desired clearance is obtained. After that, tighten the screw and check the gap again with a feeler gauge.

Rice. 9. Checking the tension of the breaker spring

Check that the lever on the axle is not stuck by pressing the lever with your finger and releasing it. The released lever should quickly return (under the action of a spring) and the contacts should close with a click.

If the closure did not occur or a sluggish closure of the contacts occurred, it is necessary to eliminate the jam and adjust the tension of the breaker spring within 500-700 G by removing the lever and bending the spring in one direction or another, if necessary. Check the spring tension of the breaker lever using a spring dynamometer, as shown in fig. 9.

Once a year, but at least every 25,000-30,000 km, inspect and, if necessary, repair the distributor in the workshop. At the same time, the distributor is disassembled, all parts are inspected and, if necessary, replaced.

When overhauling the distributor, all rubbing parts are lubricated, and the cam felt is soaked in oil and squeezed out.

Remove the fixed panel of the interrupter, wash the ball bearing and put in it a new grease LZ-158 or TsIATIM -201. Before installing the panel, check the ease of rotation of the ball bearing and, if necessary, additionally turn its outer ring until the jamming is eliminated.

Check the resistance value of the coal; it should be in the range of 6000-15,000 ohms.

After 40,000-50,000 km of the vehicle's run, in the event of a large radial play of the distributor roller, causing a violation of sparking, replace the distributor roller bearings.

The main malfunctions of the ignition system and how to eliminate them

Common distributor malfunctions include: violation of the normal gap between the contacts of the breaker, oxidation of the contacts, wear of the textolite protrusion of the breaker lever, breakdown of the capacitor insulation, violation of the insulation of the distributor cover and rotor, reduction in the elasticity of the springs of the centrifugal or vacuum ignition timing regulator, rupture of the diaphragm of the vacuum regulator.

Violation of the normal gap between the contacts, as well as their oxidation, causes interruptions in the operation of the engine.

To eliminate the malfunction, it is necessary to strip the breaker contacts, and then adjust the gap between them, as indicated above.

The wear of the textolite protrusion of the interrupter lever makes it impossible to increase the gap between the contacts to a normal (0.35 - 0.45 mm) value. A lever with a worn protrusion is replaced.

When the capacitor insulation breaks down, the motor starts to work intermittently, and then stops. In this case, the contacts of the breaker are severely burned. The defective capacitor is replaced with a NEW one.

Violation of the insulation of the cover and the rotor of the distributor entails the appearance of interruptions in the operation of the engine. Faulty cover and rotor are replaced.

A decrease in the elasticity of the springs of the centrifugal regulator is accompanied by the appearance of strong detonation knocks when the car is moving (not only when accelerating, but also when driving at an average speed). In this case, it is necessary to increase the tension of the springs by bending their racks, and then check the distributor on the stand SPZ-6.

A decrease in the elasticity of the vacuum regulator spring causes a change in the increase in the ignition timing at medium and high engine loads, which is accompanied by the appearance of detonation knocks. If you suspect a decrease in the elasticity of the spring of the vacuum regulator, the distributor must be checked at the stand SPZ-6. To increase the elasticity of the spring, install an additional washer between the spring and the fitting. After that, check the vacuum regulator again on the stand.

Violation of the tightness of the vacuum regulator usually occurs due to damage to its diaphragm. In this case, the regulator stops increasing the ignition timing at low and medium loads, as a result of which the fuel efficiency of the car worsens. The tightness of the vacuum regulator is checked at the stand SPZ-6. In the absence of a stand, the tightness of the vacuum regulator can be checked as follows. Remove the regulator from the distributor, bring air to it at a pressure of 3-4 kg / cm2 and immerse it in water. In this case, no air bubbles should be released at the junction of the housing and the nut and at the location of the lever.

Ignition coil malfunctions include insulation breakdowns and interturn short circuits of the primary and secondary windings, cracks in the cover, and burnout of additional resistance. If the insulation of the windings breaks down, the motor stops working and cannot be started. With interturn short circuits, interruptions occur in the operation of the engine. When the additional resistance burns out, the engine is easily started by the starter, but when the starter is turned off, it immediately stops.

A burnt auxiliary resistor must be replaced. Replace the defective ignition coil with a new one.

Faulty spark plugs. Any of the malfunctions of the spark plugs (violation of the normal gap between the electrodes, the deposition of a large layer of soot on the body and insulator, the appearance of cracks on the insulator) entails interruptions in the operation of the engine. An idle spark plug is detected by turning off each spark plug in turn (by removing the carbolite tip) while the engine is running at the lowest possible crankshaft speed. Disconnecting a faulty spark plug will not affect the uniformity of the engine. If you turn off a working spark plug, the uneven operation of the engine will increase.

The failed spark plug must be removed, cleaned and checked on the GARO model 514.

Instead of a faulty candle, you need to screw in a new one, after checking the gap between its electrodes. When installing the candle in place, a copper gasket must be installed under its body.

The gap between the electrodes of the candle is checked with round probes available in the driver's tool kit. At the same time, it is impossible to use a flat probe, since it does not enter into the recess on the side electrode of the spark plug, which is formed during its operation.

The ignition switch is very durable and, as a rule, works without repair or replacement for several years.

Ignition installation

The ignition of the engine must be set with great accuracy, since even with small errors in the installation, fuel consumption increases sharply, and engine power decreases.

The procedure for installing the ignition is as follows.

Remove the distributor cap and rotor and check the clearance between the breaker contacts. Adjust clearance if necessary. Put the rotor back in place.

Unscrew the spark plug of the first cylinder and, closing the hole for the spark plug of the first cylinder with your finger, turn the crankshaft of the engine with the starting handle until air starts to escape from under the finger. This will happen at the beginning of the compression stroke in the first cylinder.

After making sure that compression has begun, carefully turn the motor shaft until the hole on the pulley matches the pin.

Use the fine tuning nuts to set the octane corrector scale to zero division.

Loosen the screw securing the breaker housing and turn the distributor housing counterclockwise until the breaker contacts close.

Take a portable lamp and, using additional wires, connect one of its wires to ground, the other to the low voltage terminal on the coil (to which the wire going to the distributor is attached).

Turn on the ignition and turn the distributor housing clockwise until the bulb flashes. It is necessary to stop the rotation of the distributor exactly at the moment the light bulb flashes. If this fails, repeat the operation.

Fasten the distributor housing with a screw, put the cover and the central wire in place.

Check the correct connection of the wires from the candles, starting with the first cylinder. The wires must be connected in the order 1, 2, 4, 3, counting counterclockwise.

Fig. 10. Determination of top dead center

After each ignition setting and after adjusting the gap in the breaker, you need to check the accuracy of setting the ignition timing of the combustible mixture by listening to the engine while the car is moving. The ignition installation can be fine-tuned using the octane corrector without loosening the fixing screw. To do this, it is enough to rotate the smooth adjustment nuts, unscrewing one and wrapping the other.

Moving the arrow by one division of the octane corrector scale corresponds to a change in the ignition setting by 2 °, counting along the crankshaft. When turning the distributor housing counterclockwise, the ignition setting will be later, clockwise - earlier.

The most favorable ignition timing will be such that during a sharp acceleration (full throttle opening) of a fully loaded car on a horizontal road with an initial speed of 30-35 km / h in direct gear, single detonation knocks in the engine cylinders will barely be heard. If there are no knocks during intensive acceleration of the car, this means that the ignition is later; on the contrary, the appearance of a series of successive distinct knocks indicates too early ignition.

TO Category: - UAZ

Any car is possible due to the ignition of the combustible mixture in the cylinders of the power unit. To ensure the normal operation of the motor, the correct setting (C3) is necessary. In addition, all elements, including the coil, distributor of the UAZ car and other components must always be in working order.

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Description of SZ on UAZ

How is the installation, configuration and adjustment of the ignition circuit on AUZ 417 or any other? We will talk about this below. But first, let's look at the principle of operation of the node, as well as the varieties of SZ.

The principle of operation of the SZ

SZ scheme and designation of its elements for old UAZ engines

As already mentioned, the ignition on the UAZ performs one of the main functions when starting the power unit. Thanks to this system, the procedure for igniting the air-fuel mixture in the cylinders of the power unit is carried out by applying a spark. The spark is directly supplied to, one candle is installed on each of the cylinders. All these SZ operate in turn mode, igniting the combustible mixture in the required period of time. It should also be borne in mind that the ignition system on cars provides not only the supply of a spark, but also determines its strength.

The vehicle battery is not able to generate the voltage and current required to ignite the mixture, since this device only produces a certain amount of current. The ignition system is to help, the purpose of which is to increase the power rating of the car's battery. As a result of the use of SZ, the battery allows you to transfer sufficient voltage to the candles to ignite the mixture.

Types of ignition systems

Contactless circuit SZ with a switch for UAZ

Today, there are three main types of ignition systems that can be installed on cars:

1. Contact SZ. It is considered obsolete, but continues to be successfully used on domestic vehicles. The principle of operation is that the system produces the necessary impulse, which appears due to the operation of the distribution component. The contact-type device itself is simple, and this is a plus, because in the event of a breakdown, the driver will always be able to diagnose and repair on his own. The cost of replacement components is not high. The main components of a contact type system are a battery, a short circuit, a drive, candles, a capacitor, and a breaker with a distributor.
2. The system, which is called a transistor. Many vehicles are equipped with this type. When compared with the above type, the system is characterized by a number of advantages. Firstly, the generated spark has a high power, which is due to the increased voltage level in the secondary winding of the ignition coil. Secondly, the non-contact system is equipped with an electromagnetic device to ensure stable operation, as well as the transmission of energy to all nodes. As a result, with the correct setting of the internal combustion engine, this allows not only to increase the power of work, but also save fuel. Thirdly, it is convenience in terms of node maintenance. To ensure operability for a long time, after setting up and installing the distributor drive, this element must be lubricated from time to time. To ensure normal operation, the element is lubricated every ten thousand kilometers. As for the shortcomings, this is the complexity of the repair. It is unrealistic to repair the device yourself; this requires special diagnostic equipment, which is only available at service stations.
3. Another option for SZ is electronic, which is currently the most technologically advanced and expensive, so new vehicles are equipped with it. Unlike the two systems described above, the electronic ignition system is characterized by a complex device that ensures the performance of not only the moment, but also other parameters. Currently, all modern cars are equipped with electronic systems. The key advantage is a more simplified procedure for setting the advance angle, as well as the absence of the need to periodically check the contacts for oxidation. In practice, the air-fuel mixture in engines with electronic SZ almost always burns out in full.
   This type also has its disadvantages, in particular, in the matter of repair. It is unrealistic to produce it with your own hands, since this requires equipment. Detailed instructions for adjusting the ignition using a light bulb are presented in the video below.

How to display correctly?

How, after connecting, is the ignition set for the correct operation of the motor?

What is the order, how to correctly set the node setting, read below:

1. To begin with, the transport must be fixed in place, turn on the handbrake. The piston of the first cylinder must be set to top dead center, note that the hole on the crankshaft pulley must match the mark located on the timing gear cover.
2. The cover must be removed from the switchgear. By doing this, you will see a slider located opposite input 1, inside the cover. If it is not there, then the crankshaft must be rotated 180 degrees and the octane corrector set to 0. Using a wrench, screw the pointer to the distributor controller housing so that it is aligned with the middle mark on the octane corrector. Slightly loosen the plastic fixing screw to the housing of the distribution controller.
3. Carefully rotate the case, holding the slider with your finger so that it does not rotate. So you can eliminate the gaps in the drive. The housing rotates until the sharp part of the petal on the stator is aligned with the red risk on the rotor. Fix the plate with a screw to the controller housing.
4. The next step is to install the controller cover in place and diagnose. They must be installed in accordance with the order of operation of the cylinders, i.e. first, second, fourth, third. When the ignition timing is set, it is necessary to make a diagnosis of correctness while driving.
5. Start the power unit and warm it up for about ten minutes until the temperature is about 80 degrees. While driving on a flat and straight road at a speed of approximately 40 km/h, press the accelerator pedal sharply. If, when accelerating to 60 km / h, you feel or hear detonation, it should be short-lived, then everything is done correctly. If the detonation is very strong, then the distribution controller must be turned one half or one division counterclockwise. In the absence of detonation, the set advance angle must be increased, that is, the controller must be turned clockwise.

The ignition order on the UAZ depends on the scheme, which has distinctive features for each type of ignition system.

How to set the ignition

In order to properly adjust and set the ignition on the UAZ, it is necessary to follow the sequence of actions that is given in the repair user manual.

Before starting the adjustment of the ignition system, it is necessary to install the vehicle on a viewing hole or a special platform for repair work and apply the hand brake. The wheel mechanisms of the vehicle must be fixed with a stopper or stop. The power unit must be turned off.

After that, you can proceed to the installation of the ignition. To do this, it is necessary to fix the piston of the first cylindrical element in the position of the highest dead center. At the same time, it is necessary to check that the hole on the crankshaft pulley coincides with the pin on the cover of the timing gear unit. It is necessary to slightly lower the mounting bolt located on the plate to the switchgear sensor housing.

Then remove the cover from the distributor and rotate the crankshaft 180°. The octane corrector must be in the zero position. Then it is necessary to tighten the pointer to the housing of the timing mechanism sensor with a bolt so that its position coincides with the risk of the octane corrector.

After that, adjust the slider by rotating it counterclockwise. This will help eliminate gaps in the drive. When the tip on the stator matches the red mark, you can fix the plate with a bolt.

Then you need to replace the cover of the switchgear sensor and check the correct installation of the ignition leads according to the order of operation of the cylindrical mechanisms (1-2-4-3). You need to count in a counterclockwise direction. The ignition setting on the UAZ is completed.

If, when increasing the speed to 50-60 km / h, the driver feels a short-term detonation, then the procedure was performed correctly.

In the event that there is no detonation, you need to increase the advance angle by turning the sensor clockwise.

How to check the ignition coil

Verification is required in the following cases:

• The mechanism does not stall when the ignition is off.
• A short circuit has occurred.
• The spark plugs are out of order.
• The coil is heated, due to which the system is overloaded.

In order to check the ignition coil, it is necessary to turn off the power unit and open the hood. Then you need to find the coil. To do this, it is recommended to follow the wires that lead from the distribution mechanism in the opposite direction. After that, you need to disconnect 1 high-voltage wire from the spark plug. Before the procedure, you must wait until the engine has completely cooled down. This may take 15-25 minutes.

Then you should dismantle the candle using a special nozzle. This must be done carefully and make sure that debris does not get into the hole, because. this will lead to a malfunction of the power unit. You need to connect the wire back to the spark plug. It is recommended to use pliers with insulated handles for this operation.

After that, you need to touch the threaded side of the candle to the bare metal. When the ignition is on, all elements of the electrical equipment of the vehicle will start working, which means that the coil is functioning properly. The driver performing repairs should see a blue spark. If not, then the system is faulty. If an orange spark occurs, then insufficient voltage is being supplied. The reason for this may be poor contact, low current, or defects in the coil housing.

Another way to check the connection of the ignition coil:

1. Remove the coil from the car. To do this, disconnect the wires of the distribution equipment, remove the fasteners from the coil body using a wrench.
2. Determine the condition of the mechanism with an ohmmeter. You need to touch the probes to the primary winding, touching 2 contacts at the same time. After that, it is necessary to measure the condition of the secondary winding and compare the obtained indicators with the factory ones, which are in the repair manual.

Before starting work, it is necessary to install the transport on a flat surface and fix it with special locking devices. When checking the device, it is recommended to wear protective clothing (mask and goggles, as well as gloves).

How to connect the ignition switch

Replacing the ignition switch involves dismantling the old and installing a new mechanism with its subsequent connection. To remove the old lock, you will need a Phillips and flat screwdriver.

The procedure for dismantling the old lock of the vehicle ignition system:

1. Remove the fasteners from the lower trim panel of the steering column.
2. Insert the key into the lock and set it to the zero position, at which the steering mechanism will be locked.
3. Remove the steering column.
4. Remove the ignition lock fixing bolts.
5. Insert a flat screwdriver into a small technological hole and press the latch that holds the lock.
6. Push the lock out of its seat.
7. Disconnect all system wires.
8. Install a new lock, connect the wires and assemble the mechanism, performing all the steps in reverse order.

All wires are connected in the clockwise direction.

To the output at number 50, you need to connect a red wire, which is responsible for the stable operation of the starter device.

It is necessary to connect a blue wire with a black stripe to the output at number 15, which is responsible for heating the vehicle interior.

A pink wire is connected to the output at number 30, and a brown wire is connected to 30/1.

It is necessary to connect the black wire to the INT connector, which is responsible for the operation of the parking lights and headlights.

After all the wires are connected, you need to connect the battery terminal. The black wire must be connected to the top of the terminal. Then you need to start the engine and check the serviceability and performance of the entire ignition system. First, it is recommended to check the operation of electrical appliances, and then the serviceability of the starter mechanism.

If all wires are connected correctly, then at the zero position of the ignition key, all electrical equipment will be disconnected from power. When the key is turned to the first position, the system is activated, which controls the internal combustion engine, generator set, headlights and brake lights, as well as washers and glass cleaners. When the key is moved to the second position, the starter is activated, the rod of the anti-theft system is extended and retracted when the key position is changed.

If this does not happen, then the wires are connected incorrectly. It is necessary to disassemble the mechanism and repeat the connection procedure.

Ignition circuit

The scheme depends on the type of UAZ-3151 ignition system. In order to correctly set the contact, contactless, electronic or underwater ignition with your own hands, you need to use the repair instructions.

contact

The contact system connection diagram includes such elements as:

• Lock. It is located on the steering column housing and is necessary to control the flow of current between the vehicle's battery and the ignition.
• Battery. When the engine is off, the battery is the source of power for all electrical equipment. It supplements the level of electricity produced by the generator set if it produces a voltage below 12V.
• Switchgear. It directs high voltage current from the coil through the timing handle in turn to each of the spark plugs in the system.
• Capacitor. It is located on the switchgear housing and prevents the appearance of a spark between the open contacts of the system, protecting them from burning.
• Spark plug. High voltage current moves along the central electrode of these mechanisms. A spark appears in the gap between the central and side electrodes, which ignites the fuel liquid in the cylindrical device.
• Drive unit. The distribution mechanism is equipped with a direct type of drive from the camshaft. The rotation speed of such equipment is 50% of the rotation speed of the crankshaft.
• Centrifugal regulator. It is necessary to set the required ignition timing depending on the engine speed. This mechanism includes weights that rotate by acting on a plate with breaker contacts.
• Coil. Its design includes 2 insulated winding wires, which are wound on a core made of mild steel. The process of compressing the magnetic fields around the primary winding creates a high voltage current in the secondary winding, passing through the distributor to the spark plugs.

When the driver turns the ignition key, low battery voltage current is transferred to the primary coil. After that, it begins to form a magnetic field. Due to the rotation of the power unit from the starter, the contacts of the cam interrupter open. At this moment, the magnetic field begins to disappear, and the lines of force and turns of the windings form a high voltage current. The pulse that appears passes to the cover of the distributor housing, and the spark charge ignites the fuel-air mixture in the cylindrical motor device.

Contactless

In order to set the moment of contactless ignition on the UAZ, it is necessary to prepare the following tools:

• set of wrenches;
• crosshead screwdriver;
• stroboscope;
• protective clothing in the form of goggles and a mask;
• locking mechanisms for wheels.

Before proceeding with the connection, it is necessary to put on protective clothing and place the vehicle on a flat surface and fix its wheels with special stoppers.

First you need to put the risk on the valve cover and combine all the marks. After that, unscrew the candle of the first cylindrical mechanism of the engine and remove the cover from the main distributor. If you pull out the candle of the first cylinder, you can track the stroke of the piston part of the motor.

Then it is necessary to insert a long screwdriver into the candle well and turn the crankshaft by the ratchet clockwise, setting it to the highest dead center position. This will help push the screwdriver back out of the well. The mark on the pulley must be set opposite the long line on the body of the power unit.

After that, you need to loosen the lock nut, which presses the distributor to the cylinder block. By rotating the housing, it is necessary to install one of the slots in the gap of the Hall sensor. At this time, the contact of the movable type of the slider must completely coincide with the side contact at number 1 on the cover of the distributor, the body of which must be rotated to a stable position and fixed with a fixing nut.

Then you should tighten the distributor mounting nut and install the cover with candles in place.

When all work is completed, you need to start the engine, warm it up to a temperature of + 50 ... + 60 ° C and adjust the contactless ignition using a stroboscope.

The stroboscope must be connected to the distributor. It will provide simultaneous flashes with the formation of a spark in the cylinders. By pointing the lamp at the pulley, you can clearly see the position of the pulley mark and its change with increasing engine speed.

When the piston of the first cylindrical mechanism is in the position of the highest dead center, it is recommended to align the notch of the crankshaft pulley with the first long risk. This risk is located on the cover of the gas distribution mechanism assembly. This will help to ensure the required fuel injection advance angle at the second risk of 5°.

Electronic

In the electronic ignition system, the mechanical movement of the elements is completely absent. The operation of this system is provided by special sensors and a control unit. This makes it possible to increase the performance of the power unit of transport and reduce the average consumption of fuel fluid.

In order to install an electronic type ignition, it is necessary to move the 4 cylinders of the engine part to the position of the highest dead center. To do this, turn the crankshaft ratchet until the marks match the pulley.

After that, it is necessary to dismantle the distributor, spark plugs and coil, lay new wiring and install a high-voltage coil. Then you can attach the switch to the shield of the engine compartment and screw in new spark plugs.

High voltage wires must be connected in accordance with the operating order of the cylindrical mechanisms (1-3-4-2).

The brown wire should be connected to connector number 1. To connector number 2 - black. A white wire is connected to the connector at number 3, and a blue wire is connected to number 4.

In order to correctly set the ignition, it is necessary to prepare a control lamp, a wrench for 13 and a special key for the crankshaft. Before starting work, turn off the engine and let it cool down. After that, you must disconnect the negative terminal of the motor.

Then you need to set the first cylinder to the ignition position. Align the mark on the pulley with the mark on the timing gear.

The contact ignition system of UAZ vehicles with conventional electrical equipment could include an R119-B ignition distributor, a B115-V ignition coil, A11-U spark plugs, and a VK330 ignition switch.

The UAZ contact ignition system with electrical equipment could include a R132 or R103 ignition distributor, a B5-A or B102-B ignition coil, SN302-B or SN433 spark plugs, a VK330 ignition switch and an additional SE40-A resistor.

UAZ contact ignition system, composition and general arrangement.

Schematic diagram of the UAZ contact ignition system.

Ignition distributor R119-B.

The contact ignition system includes an ignition distributor that serves to interrupt the current in the primary circuit of the ignition coil, distribute high voltage to the spark plugs and change the ignition timing depending on the crankshaft speed and engine load. It consists of a breaker, distributor, centrifugal and vacuum ignition timing regulators, a capacitor and an octane corrector.

The interrupter includes a housing, a drive shaft with a four-sided cam and a movable plate with contacts mounted on it. Fixed, connected to the mass, and movable in the form of a hammer, isolated from the mass and connected by a conductor with an insulated low voltage output, as well as a felt insert for lubricating the cam.

The movable plate is connected by a rod to a vacuum regulator designed to change the ignition timing depending on the engine load. The gap between the contacts is adjusted by moving the rack of the fixed contact of the breaker using a screwdriver installed in the groove of the adjusting screw.

The distributor includes a rotor with a current-carrying plate and a cover with side and central electrodes. The central electrode contains a contact coal. The rotor rotates with the chopper cam. The central electrode is connected by a high-voltage wire to the ignition coil. The side electrodes are connected by high-voltage wires from the ignition in accordance with the order of operation of the engine cylinders.

The high voltage current from the ignition coil is supplied through the contact coal to the spacer plate of the rotor, and from it through the side electrodes through the high voltage wires to the spark plugs. With the help of an octane corrector installed on the body of the interrupter, manual adjustment of the ignition timing is made.

Ignition distributor R132.

It has the same design as the R119-B distributor and differs from it in the presence of a protective screen and the characteristic of the centrifugal regulator.

Centrifugal, vacuum regulators and octane corrector.

Used to adjust the ignition timing. Ignition advance is the ignition of the working mixture until the piston reaches TDC on the compression stroke. Since the combustion time of the working mixture is practically unchanged, with an increase in the crankshaft speed, the piston has time to move away from the TDC by a greater amount during the combustion of the mixture after passing the TDC than at a low crankshaft speed.

The mixture will burn in a larger volume, the gas pressure on the piston will decrease, the engine will not develop full power. Therefore, with an increase in the crankshaft speed, the working mixture must be ignited earlier, before the piston approaches TDC, in order to ensure complete combustion of the mixture by the time the piston passes TDC at the smallest volume. In addition, at the same crankshaft speed, the ignition timing should decrease with the opening of the throttle valves and increase when they are closed.

This is due to the fact that when the throttle valves are opened, the amount of mixture entering the cylinders increases, and at the same time the amount of residual gases decreases, as a result of which the rate of combustion of the mixture increases. And vice versa - when the throttle valves are closed, the combustion rate of the mixture decreases.

The ignition timing is automatically changed depending on the speed of the crankshaft using a centrifugal governor. It consists of two weights, which are put on the axles, mounted on the roller plate, and pulled together by two springs. With an increase in the shaft speed, the weights, under the action of centrifugal force, diverge to the sides and turn the bar with the cam in the direction of its rotation by a certain angle, which ensures an earlier opening of the breaker contacts, that is, a greater ignition advance.

Automatic control of the ignition timing, depending on the degree of opening of the throttle valves, is carried out using a vacuum regulator. The diaphragm of the regulator is pressed towards the breaker by a spring. The cavity on one side of the diaphragm is connected to the atmosphere, and on the other side, with the help of a fitting and a pipeline, to the carburetor.

When the throttle valves are closed, the vacuum in the vacuum regulator housing increases. The diaphragm, overcoming the resistance of the spring, bends outward and, through the rod, turns the movable plate in the direction of increasing the ignition timing. When the dampers are opened, the diaphragm bends in the other direction, turning the plate in the direction of decreasing the ignition timing.

An octane corrector is used to manually adjust the ignition timing depending on the octane number of the fuel. The ignition advance angle changes when the distributor housing is rotated relative to the distributor shaft using nuts. On the fixed plate of the octane corrector there are divisions with the designations +10, -10. When moving the movable plate together with the distributor housing to the "plus" side, an earlier ignition is set. When moving towards the "minus" - later.

Ignition coils B115-B and B5-A.

The UAZ contact ignition system can be equipped with one of these coils. They have the same design and differ from each other in the absence of an additional resistor on the B5-A coil located on the B115-B coil body. In addition, the B5-A coil has a screen. The ignition coil consists of a core with an insulating sleeve put on it, on which the secondary winding is wound and on top of it the primary winding, a porcelain insulator, a cover with leads and a housing with a magnetic circuit. The internal cavity of the coil is filled with transformer oil, which improves the insulation of the coil and reduces the heating of the coil.

Spark plug A11U.

It consists of a steel case, a ceramic insulator, inside of which there is a central electrode, a seal and a side electrode. A resistor is installed in the tip of the high-voltage wire connected to the candle to suppress radio interference.

Shielded spark plug CH302-B.

The shielded spark plug kit SN302-B includes a sealing rubber bushing that seals the wire entry into the spark plug, a ceramic insulating shield bushing and a ceramic insert with a built-in resistor to suppress radio interference. The connection of the high-voltage wire with the electrode of the liner is carried out as follows.

A rubber sealing plug of the candle is put on the end of the high voltage wire coming out of the shielding braid, and then the wire is inserted into the contact device. The core of the wire, bare in length by 8 mm, is inserted into the hole of the sleeve, flared in the bottom of the ceramic cup of the contact device, and fluffed so that the contact device is clamped on the wire.

The voltage sensor consists of a rotor and a stator. Bolt the octane corrector plate to the distributor sensor housing. 6. Install the cover of the distributor sensor, check the correct installation of the ignition wires to the candles in accordance with the order of operation of the engine cylinders 1-2-4-3, counting counterclockwise. After each ignition setting, check the accuracy of the ignition timing by listening to the engine while the vehicle is moving.

Ignition system on UAZ 469

This mode is used when starting the engine with a starter. UAZ ignitions have a simple design. Contactless ignition is more convenient to use than contact ignition.

With anti-theft locking device, with blocking against restarting the starter without first switching off the ignition and with socket illumination. The locking device against restarting the starter must not allow the key to be turned again from position I (ignition) to position II (starter).

The operation of a car engine is impossible without a correctly set ignition timing. Rotate the distributor housing until the middle mark on the distributor body lines up with the mark on the engine. For example, for a VAZ-2106 car, the switch can be installed in a free space between the washer reservoir and the left headlight. Drill 2 holes and screw the switch with self-tapping screws. The correct setting of the ignition timing in a contactless ignition system makes it possible to operate the car in comfortable conditions. Set the crankshaft to a position that corresponds to an ignition timing of 5 degrees. Check the order of connection of the high voltage wires of the engine cylinders.

Underwater ignition UAZ scheme

And you can go further, throw out the regular harness, the EPHX system and install a switch in place of the variator under the hood. The output of the additional resistance "to the starter relay" in some wiring options is connected to the auxiliary contacts on the ignition switch, and not to the starter relay. The coil is for the contact ignition system! An interesting addition to the ignition system with an ATE-2 distributor and a Hall sensor will be the switch 962.3734 complete with a knock sensor (automatic octane corrector). The knock sensor is connected to the 7th leg of the switch, which is not normally used. The bottom line is that the eight distributor on the eight motor stands "from the ass" of the engine and is driven by a camshaft.

A pair of Hall sensors located at 90 degrees is placed in the distributor. relative to each other. A “butterfly” plate is put on the axis; when moving in the Hall sensors, it alternately generates pulses. Any distributor will fit, the main thing is that it fits the type of drive and is serviceable.

Recommendations for setting up a distributor Is it possible to put a distributor from the Volga on an UAZ Experience in operating a distributor with a Hall sensor (article) How to isolate the distributor from water? Alteration of non-contact ignition to contact Easily converted all electronic ignition to 31519 with a 3 l.1 engine. The regular electronic ignition distributor is replaced by a mechanical R 119-B;2. The regular ignition coil is replaced by B-117 A; 3. Regular switch and variator are simply removed; 4. If the contact ignition system, then wear of the bearing in the ignition distributor or an incorrectly set gap between the contacts is possible. You set the distributor slider to the first cylinder with a crooked starter, and the middle mark on the KV pulley (ZMZ 402) or the first one along the pulley (UMZ engines) opposite the pin. Designed for installation on GAZelle and Volga vehicles with a ZMZ-4026.10 carburetor engine instead of the standard ignition system.

STEP 4: Connect the wiring and install the switch. We insert the wires into the distributor.

Manual for replacing a distributor with an oil pump drive

Turn off the ignition and dismantle the cover of the distributor, tips and high-voltage cables are connected to it. Then, from the distribution mechanism, it is necessary to disconnect the wire connected to the switch. Taking a 13 wrench, unscrew the two nuts securing the device and dismantle the mechanism together with the oil pump drive from the power unit.

What is the connection diagram for electronic or contactless ignition on the UAZ 417, how to convert contact ignition to contactless? Why does the coil heat up and how to adjust and adjust the lead angle? Also, non-contact systems are equipped with an electromagnetic device, which makes it possible to achieve more stable operation of the engine. One of the main nuances in terms of maintenance is the need for periodic lubrication of the distributor drive - at least every 10 thousand kilometers. After that, the cover should be removed from the distribution mechanism.

In order for the distributor to get into the drive, it is necessary to match the protrusions on the clutch from the bottom of the distributor with the slots on the drive shaft. On the installed distributor, there should be no gap between the octane corrector plate and the drive housing itself. Remove the cover of the new distributor. To do this, unscrew the 2 screws with a Phillips screwdriver. The slider should look at the engine shield. The fact is that the numbering of the 1st cylinder in the ATE-2 distributor does not match the numbering of the regular distributor. It is put on a regular place without alterations. STEP 4. Connecting the wiring and installing the switch There is nothing complicated. If a kit from VAZ-21074 is used, then without pads there will be only 3 contacts.

The main components of a contact type system are a battery, a short circuit, a drive, candles, a capacitor, and a breaker with a distributor. Non-contact ignition system, which is called transistorized. Unlike the two systems described above, the electronic ignition system is characterized by a complex device that ensures the performance of not only the moment, but also other parameters.

8000 km. Tighten the nuts of the distributor and fastening the wire contacts. Rotor hub lubrication. 2. Remove the plastic cover from the springboard and make sure that the slider electrode matches the notch on the cover.