Kammikadze

June 7, 2012 4:24 pm

The rear suspension is independent, multi-link (three transverse and one trailing arm on each side), with telescopic shock absorber struts 4 (Fig. 7.3) and 13, stabilizer 9 roll stability. Guide elements rear suspension are longitudinal levers 7 and 16 control and transverse levers 1, 15.2 and 10. Such a system of levers in combination with elastic rubber-metal hinges provides the suspension with the property of "passive steering": when cornering rear wheels turn around

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tuning

DIY

The telescopic shock absorber strut combines the functions of an elastic element and a vibration damper. The shock absorber strut in the lower part is connected to the lower transverse arm, and in the upper part it is attached to the body. A coiled coil spring, a compression buffer with a protective cover of the strut and an upper support are assembled on the shock absorber strut.

Lower control arms the suspensions are connected to the anti-roll bar. The anti-roll bars are attached via ball joints to the lower wishbones and stabilizer bar. Stabilizer bar attached to beam rear axle staples with rubber pads

A new player on the golf course: Kia Ceed.

Representatives of "Kia" say: with the advent of "cee'd" begins new chapter in the history of the company - from now on, cars of this brand should compete on equal terms with European models. Yes, what a bold claim! The main rivals of the debutant marketers "Kia" see" Ford Focus" And " Volkswagen Golf"The bar is set high. Will the Koreans be able to beat the trendsetters of the market? To find out, we went to Italy for the first acquaintance with the "Kia cee'd".

The STRANGE word "cee'd" (read as "seed") is formed by a combination of the letter "C", meaning "segment C" (golf class), and the abbreviation "ED" - "European Design". Everything else, including the unusual lowercase and apostrophe, is added for beauty. Koreans believe that such a name will caress the European ear and be easy to remember. It's really easy to remember. Personally, I associate it with a bearded anecdote: "How do Muscovites call pivo? - Piivo!"

However, jokes aside. Here they are, the new Korean contenders for the title of European bestseller, lined up in the parking lot near the Rome airport...

What car do you want? Gasoline or diesel? With "mechanics" or with "automatic"? asked the girl who handed over the keys to test cars. - We have three petrol and one (so far one, sorry) diesel to choose from.

A good start. European buyers are accustomed to choosing from a wide range of engines and running their fingers through a long list of standard equipment.

It seems that the organizers figured out in advance that more weak motors Russians do not favor, and more powerful ones in our market come out too expensive. At least for golf cars.

Holding the keys in my hand, I head to the line of cars. All are five-door hatchbacks. There are no other bodies yet. Toward the end of 2007, a station wagon will appear, followed by a sports three-door. There will be no sedan at all. After all, this class already has " Kia Cerato"with a body" sedan ". It sells well, and so far there is no need to create a replacement for it.

All at once

LOOKS new "Kia" is very good. The look was developed in the new design center of the company "Kia" in Germany - the joint efforts of German and Korean specialists (who, in turn, learned from the Italians). What ended up happening is a bit like a hatchback" Toyota Corolla", but still - great. About the faceless design, for which they scolded for many years Korean cars seems to be forgotten now. Looks "cee'd" stylish and modern.

The salon is spacious, the seat adjustments are even redundant: having moved all the way back, I do not reach the pedals. Immediately drew attention to the finish of the front panel. This is not the slippery and ringing plastic familiar from old Korean models, but an elastic material, resembling a rubberized fabric with a fine textured notch. Touch it or just hold it with your hand - it's nice. Somewhat spoils the impression of the lurid framing of the center console "aluminum", but this is my personal opinion. Some may disagree with him. The build quality and fit of the elements - do not find fault.

And the level of equipment is even higher than that of some competitors. The car has everything. What all"? It's easier to say what isn't there than to list a long list of installed options. I got the car in the most rich equipment TX (there is also an initial LX and an intermediate EX). For complete happiness, it lacks only a color liquid crystal multifunctional information display. The display, however, is, but small and monochrome. Do not display the map of the navigation system on it. Shows only the direction of movement in the form of arrows.

But rich equipment- not the most important thing in the car. Priority attention in the design was given to safety issues. Kia engineers claim that they ended up creating one of the most safe cars in class, and upcoming official crash tests" EuroNCAP"This will be confirmed. I don't know, we'll wait and see. There are at least six airbags in the car. And even in the cheapest configuration LX. In addition to the "cee'd" pillows, it can even be equipped ESP system. But it is installed only on the richest versions of TX.

With extraordinary ease...

TOUCHING from a place, I shamefully "stalled". Just like a newbie from driving school. The reason for this is the low thrust of the 1.6-liter engine at low speeds (as, in fact, it should be) and the too light, almost weightless clutch pedal. Out of habit, it is very difficult to catch the moment of inclusion. However, in city traffic, when you have to constantly change gears, such ease is more of a blessing than a disadvantage: the leg does not get tired.

According to the first sensations "Kia cee'd" - the car is more female (if, of course, it is appropriate to subdivide cars by gender). All efforts are small: on the pedals, on the steering wheel, on gearshift lever. The strong half of humanity usually prefers tighter and more informative controls.

The car is very willing to accelerate. For dynamic urban driving - what you need. And on a suburban highway, if not speed limits, without much stress, you can drive the speedometer needle over 200 km / h. I suspect that with a more powerful 2-liter engine "Kia cee'd" will be able to please even a sophisticated driver. But, as always, there is a fly in the ointment - the suspension is too soft. Even the average European housewife and they prefer harder. In this case, it is only necessary to turn off the expressway onto secondary road, which does not differ in the special quality of asphalt, as the suspension begins to “break through” on more or less serious bumps and bumps. You have to slow down and drive more carefully. But even on the cobbled pavement (there are many such streets in Italian towns), there is silence in the car - nothing creaks, rattles or clanks. Rigid body, good finishing materials and high-quality assembly are the key to acoustic comfort.

After a few kilometers, the country road smoothly turned into a winding mountain serpentine. All Southern Europe drives on such roads. Apparently, therefore, it was important for the organizers of the test drive to demonstrate how the car behaves in similar conditions. On the serpentine, I caught up with an old Alfa, driven by a local resident, who seemed to know all the turns by heart - he stormed them very fearlessly. Catch up with something caught up, but it was not possible to bypass it. Seeing that I "hung on the tail", the Italian drove for real - "delivering" the car into a slide at the entrance to the turns. To be honest, it became scary, and I preferred to fall behind. If only the suspension would be stiffer and the steering wheel more informative ...

Nevertheless, it must be admitted that the Koreans have done very nice car. Even by high European standards. " Alfa Romeo", of course, it did not work out (and most likely there was no such task), but "Fiat" or something very similar to it in sensations is quite.

In appearance"Kia cee'd" are quotes from the design of many popular hatchbacks. However, he is quite independent.

There is no answer to this question yet. At the official press conference, the head of the European division " Kia Motors"said that the prices "will be very competitive." At the same time, he noted that Kia is trying to get away from the established image of a "manufacturer of cheap cars." That's it, not a word more. What this means is anyone's guess.

Shy boy.

Behind a rather modest design new Kia Cee'd in hiding amazing car because he surprised all his testers. When I went to pick up the car, I thought: “well, Kia, well, it’s going, inexpensive, modest, most likely boring”, but it turned out ... It turned out the following ...

The design of the car is deliberately simple and discreet. Numerous complex lines of the car help to draw such a conclusion: the hood, the bottom of the doors, the headlights and rear lights. In general, there is a slight resemblance to the Japanese sister - Toyota Auris, but more - with previous version Toyota Corolla hatchback.

Inside, you will not find any trendy and innovative design solutions either - everything is familiar, popular and therefore convenient. Everything is done with acceptable quality and a good fit of parts to each other. The plastic used is not the best (especially on the door handrails), but it does not rattle or buzz either at speed, or on bumps, or with loud music. Its texture is a light imitation of fabric and it is more or less pleasant to the touch. Use plastic engineers a little the worst quality, and the interior would become simply unacceptable, but, as they say, tolerable.

The center console is slightly noticeably turned towards the driver - it’s more convenient, and the glove compartment opens very low at the passenger’s feet - on the contrary, it’s not very pleasant: in order to rummage in the glove compartment, you need to ask the person sitting next to you to first tighten your legs. It's not the first time you've seen something like this in a car. The instruments are easy to read, everything is clear and there are no "proprietary" features of controlling certain functions - a classic. Although no! I puzzled for a very long time - how to change "Fahrenheit" to "Celsius" on a monitor showing the temperature overboard. By the way, the instruments (tachometer and speedometer) are made in a semi-sports style (the speedometer is placed in a half glass), which, at first, caused a smile (about how it disappeared - a little later). I liked the “correct” height of the central armrest - flush with the armrests on the doors, but I didn’t like the fact that there is simply nowhere to put a bottle of water in the cabin - there is only one cup holder (for all!), And in the door niches there is only enough space for papers and rags, behind - the same picture, only there is no central armrest. But there is plenty of room for the legs, and for the knees, and for the shoulders, and for the heads of passengers. But there were no complaints about the trunk at all - spacious, with a highly reclining door and without hinges going inside, with a low loading opening and with a relatively flat floor, if folded rear seats(there is a height difference, but smooth, like most classmates).

So far, the Kia Sid shows itself to be a kind of middle peasant, a car without pretensions and pretensions. But it's worth getting out of the parking lot and…

… and the car starts to amaze, amaze, delight. From this moment begins the opening. Nothing like this was expected from the car, and the fact that there is a car on the market with similar driving qualities for such a modest price is a real discovery and that's it. Kia Sid is controlled just perfect! Without any stretch or reservation. Believe it or not, but in terms of this quality it is comparable to the BMW Kopeika and the 307th Peugeot (I wouldn’t believe it myself and laughed, but a fact that is easy to verify by passing a test drive at a dealer remains a fact). I was both happy and depressed. On the one hand, it’s good that the test was not boring, but the fact that two of my favorite cars in the “C” class had an inexpensive competitor (in terms of handling) plunged me into despondency. The car goes clearly in a straight line at a speed of 170 km / h, even if you let go of the steering wheel (there is a clear “zero” in the “straight” position - like a kind of hollow), Sid didn’t care about the track, and turns into turns so briskly, clearly, confidently And sure enough, I wanted to do it over and over again. Rearrangement is not a problem: left-right and you fly calmly further - you did not risk it. Feedback with wheels is transparent and understandable - all the information is on the steering wheel, which turns into an accurate tool. Now try to hit the brakes sharply - Sid stops smoothly and quickly, and most importantly - you don’t have to catch him on the road - he doesn’t wobble, doesn’t break into a skid if braking occurs

in a turn. So driving is pleasant and joyful! At the same time, Sid was not shod in the most driver's rubber with low profile and a hard side, av Michelin Energy 205/55 R16 - also decent rubber and showed herself good sides, but for the drive there is better.

Special respect automatic box. Her work corresponds to the nature of the machine. Switching occurs quickly and almost imperceptibly, the machine responds quickly and correctly to any change in pressing the gas pedal, upshifting or downshifting: you go 80 km / h in fourth gear, you need to quickly pick up speed - you press the gas harder, the machine immediately switches to third gear ( or the second - how to click) and accelerates the car as fast as its 1.6-liter, 122-horsepower engine is capable of (Sid will soon appear on the market and with a 2-liter engine of 143 hp, the body will also appear " station wagon" - SW).

So, I'm also getting ready to change the ammo racks. Collecting [b]a set of hangers. A LOT and chaotically has been written on this topic, but what I have decided so far for myself:

Possible replacement options

CEED ED (dorestyle)

KYB based solution

B. Rear suspension

Bilstein based solution

B. Rear suspension

CEED FL (restyle)

Looking for someone to write! ;)

Complementing these lists other parts of the rack (see fig.). What should be changed along with springs and ammo? Buy original or eat worthy replacements other manufacturers?

We need RELIABLE solutions that do not change the worst side nature of Sid's suspension, which will improve the reliability and operational properties. Collective farming and finishing are also not acceptable.

Replacement of other suspension parts (except ammo and springs) - according to their condition.

Let's make a version of the normal manual!

Any comments, additions and amendments will be accepted with gratitude, the original

1 suspension device

The result of the work of Kia engineers is a fully independent suspension, focused on an active driving style.

1.1 Basic definitions

MacPherson type front suspension with anti-roll bar and reinforced subframe, rear multi-link. Ease of maintenance and durability make this arrangement indispensable in the conditions of Russian roads. To increase the rolling effect, the diameter has been increased wheel bearings. A L - shaped lower arms and gas shock absorbers Sachs help improve handling and ride comfort. On kia seed exhibited negative angle camber to achieve cornering stability.

The car can be understeered, oversteered and neutral. In order to obtain neutral understeer in the coast, the suspension is adjusted in proportion to the weight distribution of the car indicated in the info (with the driver seated in his seat!). However, this is not the best option, since under gas the rear-wheel drive car will oversteer, and the front-wheel drive will understeer. Normally, neutral steering is set to an intermediate gas pedal position.

1.2 Ground clearance

(Ride Height)

It determines the suspension travel range (Motion Range, in meters) and the height of the machine's center of gravity. Centrifugal force acts on the center of gravity, trying to overturn the car through the outer wheels. The inner wheels are unloaded and lose traction. The outer wheels are loaded, but gain significantly less grip than the inner wheels lose, and the total grip of the car drops. In addition, the car body rolls and tilts the wheels, reducing their contact patches. To reduce these undesirable effects and pass the turn on more speed, the center of gravity should be as low as possible. However, do not rush to set very low ground clearance. It will limit suspension travel and can make it difficult to get over bumpy spots on the track.

2 shock absorbers

(Dampers, Shock absorbers)

The characteristics of shock absorbers are closely related to the stiffness of the springs. Springs affect the length of the suspension travel, and shock absorbers affect the speed of movement.

2.1 Compression force

(Compression Damping)

The compression resistance of a shock absorber affects the rate at which the suspension compresses: outer wheels when cornering, front when braking, rear when accelerating. The larger the value, the slower the car body will move when the weight is redistributed, and the easier it is to control such a car. The price for this is the weakening of the grip properties of tires - the braking dynamics and cornering speed will worsen.

2.2 Rebound force

(Rebound Damping)

Like compression force, rebound force dampens body vibrations in favor of easier control, only when the suspension is retracted (expanded).

3 Anti-roll bars

(Anti Roll bars)

They reduce lateral body roll (and with it wheel tilt) and make the car's responses faster and more predictable. But you should not overdo it with them, they do independent suspension more dependent - when one wheel hits, both the opposite and the entire body will tremble. In addition, stabilizers reduce grip. Accordingly, they reduce the understeer in front and increase the rear. They adjust the understeer at the stage of fine tuning.

4 Management

(Steering)

This is the distance between the axis of rotation of the wheel and the middle of its tire (A). When driving on a rear-wheel drive car with a positive rolling arm, the rolling resistance force of the non-driving wheel creates a noticeable moment on this arm, which rushes the steering wheel into central position. This can be useful on "nervous" and difficult to drive machines. In the case of "cotton" control, on the contrary, a negative shoulder is made to add spice. On a front-wheel drive car, when coasting or braking, the situation repeats itself, and when accelerating, everything is exactly the opposite. Therefore, any non-zero values ​​will alternately either help or harm, introducing an extra imbalance into the control.

(Caster - English)

Longitudinal angle of inclination of the axis of rotation

Provides dynamic stabilization of the steered wheels - in other words, makes the car go straight with the steering wheel released. The principle of operation is clear from the behavior of the wheel on the chair - in motion, it tends to be behind the legs, that is, to take the most stable position. To get the same effect on a car (rear wheel drive), the point of intersection of the pivot point with the road surface (c) must be ahead of the center of the wheel contact patch (d). To do this, the axis of rotation and tilt back, like a bicycle. Now, when turning, the lateral reactions of the road, applied behind, try to return the wheel to its place. Moreover, if a lateral force acts on the car, then the caster provides, when the steering wheel is accidentally released smooth turn machine in the direction of this force, and does not allow it to tip over. On front wheel drive car when braking dynamic stabilization works the same as on rear wheel drive. But during acceleration, the wheel no longer rolls behind the leg, but pushes it in front of itself, so dynamic stabilization is not required.

The value of the caster does not end there, when you turn the steering wheel, it tilts both wheels in the direction of the turn. When the wheel tilts, the outer rolling circle (1) becomes larger than the inner one (2), and therefore travels a longer distance. But since this is one and the same body and cannot be torn apart, then inner part brakes the outside and the wheel tends to turn in the direction of the slope. This means that the caster, by tilting both front wheels in the direction of the turn, increases the steering when the steering wheel is turned.

4.3 Roll axis tilt

Gives weight stabilization of the steered wheels. With this scheme, at the moment the wheel deviates from the “neutral”, the front end begins to rise. And since it weighs a lot, when the steering wheel is released under the influence of gravity, the system tends to take its original position, corresponding to movement in a straight line. Weight stabilization is present only when positive leverage run-in. But in a turn, the inkline tilts the outer wheel at an unfavorable angle (like a positive camber) and its contact patch deteriorates. And since it bears the main load in the turn, the entire axle loses grip. This disadvantage can be compensated by caster and camber, then the grip of the outer wheel will be good, but the inner (albeit less important) will deteriorate greatly.

For front wheel drive cars front axle grip is extremely important, and this stabilization should be resorted to in last turn. The powerful rear wheel drive cars on the contrary, everything depends on the clutch rear wheels and a slight loss of front axle traction in a corner is even beneficial, as it compensates for oversteer.

4.4 Wheel parallelism

(Parallel Steer)

With a value of 1, both wheels turn at the same angle; 0 - as the steering wheel is turned, the inner wheel deviates by a greater angle than the outer one. In a turn, the inner wheel travels along a smaller radius, so you need to turn it more than the outer one. In addition, as the steering wheel is turned, the toe-in of the front wheels decreases, thereby increasing the stability of control in the turn. The smaller the turning radius on the track, the smaller this value should be.

5 wheels

(Wheels)

5.1 Convergence

(Toe-in)

Positive convergence (toe-in): when viewed from above, if you draw straight lines along the wheels, they will intersect in front of the car. Negative convergence (toe-out): imaginary lines will intersect behind the car. Positive convergence on rear axle makes it more stable in a straight line. With a negative, the car will scour around. With the front axle, the opposite is true - the positive toe-in of the front wheels adds steering to the car, it becomes easier to dive into the turn. Negative will increase the stability of the control. A strong toe-in deviation from zero increases the machine's straight-line rolling resistance (decreases maximum speed, fuel consumption and tire wear increase), but at small angles this is not noticeable.

Like convergence, camber is the parallelism of the wheels, but when viewed from the front. At negative camber the wheels lean inward, and when positive, outward. This is done to maintain the contact patch in the turn, because, as already mentioned, the tire is deformed under the action of lateral overloads. Unlike wheel lean due to caster, camber is a static angle. Therefore, along with the advantages, it also has two small flaws. The first is that in a turn, the inside wheel leans from the turn and loses traction. But since it is unloaded, it does not play a big role. The second is that when driving in a straight line, the wheels are not perpendicular to the road, and the grip is not maximum. But since it makes sense to set a large value of this angle only for the rear wheels, then this is noticeable only when starting on rear wheel drive car. When braking, almost 70% of the weight has to be slowed down by the front wheels - rear wheel traction has much less of an effect.
The tilt of the wheel relative to the road determines the size and shape of the contact patch of the tire, that is, it directly affects the grip of the wheels with the road. On a straight line, the wheels have maximum grip absolutely perpendicular to the road (Fig. 1-a). This allows you to start quickly and slow down late. And in the turn, the lateral overload deforms the contact patch and changes the nature of the specific pressure distribution in it (Fig. 1-b). To compensate for the deformation, the wheel tilts in the direction of the turn (Fig. 1-c). This allows you to take corners with the same maximum contact patch, and therefore with maximum grip.

a - contact patch at rest;
b - deformation of the contact patch in a turn;
c - compensation of deformation by tilting the wheel
When driving in a straight line, the grip decreases, and you have to brake earlier.

Multi-link design in such a place as the rear suspension Kia car Sid is easy enough to meet today. This is a common scheme, which the vast majority of manufacturers prefer in order to increase stability and endow their models with confident handling.

Such a suspension is possessed by the "hero" of our material - Kia Sid. This scheme is not simple, but allows the manufacturer to achieve a very fine tuning of the chassis.

At the heart of any multi-link suspension design, of course, the front suspension is not taken into account here, there are such elements:

• levers, some of which are transverse and others are longitudinal;
• one-piece subframe;
• twisted spring elements;
• shock absorbers;
• hubs together with trunnions;
• stabilizer bar.

Suspension tasks

The scheme of the rear chassis in the Kia Sid model includes 4 levers on one side. Three elements are transverse, and the 4th is longitudinal. By means of the lever system, the correct retention of the hub together with the wheel in motion per unit of time is ensured. The subframe allows you to reduce the level of vibrations on the body, transmitted by the suspension elements.

Each of the levers is fastened using bolted connections through rubber-metal bushings, called silent blocks. Such softening components are present not only in the levers, but also in the attachment points of the subframe itself.

To dampen vertical vibrations, shock absorbers are used, which are supposed to work in tandem with springs. Thus, the most effective position of the body relative to the roadway is ensured. This is especially noticeable when driving over bumps, when the body, tilted under its own weight, quickly and efficiently returns to its original place with the help of these shock-absorbing elements.

For cornering stability and counteracting lateral forces, the stabilizer is responsible, which is attached to special subframe brackets and connected to its racks at both edges. Their resource (racks) is small, about 60-80 thousand km, since they perceive loads with increased effort. The durability of these components, as well as other components of the rear suspension, is affected by the condition of the road surfaces and the intensity of travel.

The steering knuckle is a kind of connecting link between the levers. With its help, the forces arising in the suspension components during movement are redistributed. KIA Ceed. A hub is installed in the trunnion (or fist) itself, which serves to hold the wheel and ensure its rotation. Some inexperienced owners are spontaneously misled, confusing the trunnion with the hub. To help such a contingent, we address a photo that will allow us to finally understand the type and purpose of these elements. The fist is circled in this diagram to avoid further confusion.

Differences in pendants in different generations of LED

The rear suspension in the previous generation caused a lot of criticism due to its excessive rigidity. Kia owners Sid complained about the lack of comfort when driving through bumps and potholes, when every bump is felt in its entirety. The manufacturer listened to angry owners and retuned the suspension, giving it different characteristics in terms of balance between softness and rigidity, without compromising handling.

How has the behavior of the suspension changed in new generation Kia Sid models? By the way, the front suspension is also improved. Let's set up a test. Having started the movement, we focus on the sensations in anticipation of shaking when passing bumps. However, nothing of the kind happens. While we praise the manufacturer, mentally showering him with all sorts of awards. The manhole cover of the sewer network appeared ahead. We aim at her with a wheel. So, ride! Yes, the sensations are not the most pleasant, but tolerable. We are convinced that the transformations benefited the KIA Ceed car and the new chassis significantly exceeds the design that was present in the previous generation.

Summing up

In general, the behavior is confident, but I would like to wish Korean engineers keep working on improvements so that the rear suspension and front suspension are even better, and then Kia car Ceed will be able to confidently "win" domestic potholes.

65 66 67 68 69 ..

Kia Sid. Rear suspension

The rear suspension is independent, multi-link (three transverse and one trailing arm on each side), with telescopic shock absorber struts 4 (Fig. 7.3) and 13, and a stabilizer bar 9 of transverse stability. The guide elements of the rear suspension are trailing arms 7 and 16 control and transverse arms 1, 15.2 and 10. Such a system of levers, in combination with elastic rubber-metal hinges, provides the suspension with the property of “passive steering”: when cornering, the rear wheels turn at a small angle in the direction of rotation , which provides better stability and vehicle handling.

Rice. 7.3. Rear suspension:1, 15 - lower transverse levers; 2, 10 - upper transverse levers; 3.1 2 - rear suspension springs; 4, 13 - rear suspension shock absorbers; 5, 14 - rear suspension stabilizer struts; 6, 11 - support washers of springs; 7, 16 - trailing arms; 8 - rear axle beam; 9 - stabilizer bar rear suspension

The telescopic shock absorber strut combines the functions of an elastic element and a vibration damper. The shock absorber strut in the lower part is connected to the lower transverse arm, and in the upper part it is attached to the body. A coiled coil spring, a compression buffer with a protective cover of the strut and an upper support are assembled on the shock absorber strut.

The lower suspension arms are connected to the anti-roll bar. The anti-roll bars are attached via ball joints to the lower wishbones and the stabilizer bar. The stabilizer bar is attached to the rear axle beam with brackets with rubber cushions.

Kia Sid. Rear suspension problems

POSSIBLE REAR SUSPENSION FAULTS, THEIR CAUSES AND REMEDIES

Cause of malfunction	Remedy
Noise and knock in suspension
Faulty shock absorber	Replace shock absorber
Loose fastening shock absorber strut or worn strut eye bushing Wear of silent blocks of suspension arms	Tighten bolt with nut bottom mount shock absorber or replace bushings Replace silent blocks or levers
Settling or broken spring	Replace spring
Wheel bearing failure	Replace bearing
Vehicle drifting away from straight line
Different tire pressure	Set normal tire pressure
Miscellaneous wear or tire tread pattern	Change tires
Broken camber angle	Eliminate the cause of the violation of the camber angle and adjust the wheel alignment
Sediment or breakage of one of the springs	Replace spring
Deformation trailing arms	Replace trailing arms
Wear of silent blocks of trailing arms	Same
increased noise or uneven wear tire tread
Tire pressure not correct	Set normal pressure
Wheel alignment parameters are violated Car overload

The use of a multi-link suspension system has already become a classic in the construction of the rear of the chassis modern cars. The choice was not random. At the heart of the construction of the scheme of the back Kia suspension Sid uses the idea of ​​fixing the wheel hub with the help of several levers at once. The result of being in different planes relative to the hull is the ability to make more precise settings for the suspension system.

The multi-link system is built on the basis of:

• levers located in two planes of the car;
• stretcher;
• twisted springs;
• hub supports;
• shock absorbers.

Purpose of suspension elements

In the scheme for constructing the rear suspension of the Kia Sid, the engineers decided to use four levers to mount the wheel hub, three of which they installed in the transverse (in relation to the body of the car) plane, and the fourth in the longitudinal. Acting as guiding elements, levers are also capable of solving other problems. For example, to be responsible for the position of the wheel at the moment of movement in relation to the body.

All parts of the suspension system can be connected using bolted connection, ball joint or elastic element. At Kia Sid, elastic elements - silent blocks are used to fasten the components of the rear suspension together. It must be emphasized that they can only be replaced and not repaired. Elastic elements, connecting the suspension system with the body through the subframe, are designed to reduce vibration during movement. In addition, silent blocks can reduce the noise level of the suspension at its work.

The stabilizer links take over and dampen most of the lateral vibrations that arise from problems associated with the driving surface. Their service life depends on the intensity of trips to specific vehicle and road conditions. It is recommended to change racks after 60-80 thousand run.

trunnion ( rounded fist), perceiving the forces coming from the wheel, redistributes them between other parts of the suspension. Sometimes novice owners confuse the steering knuckle with the wheel hub. As a result, there is misunderstanding and it can be difficult to help with repairs. What does the trunnion represent and where is the location in the design will help you figure out the photo of the Kia Sid rear suspension. As we can see in the photo, the hub and trunnion (circled in the diagram) have a different location.

Comparison of the rear suspension in different generations

There were many complaints about the rear suspension of the previous generation. Basically, car owners complained about its extreme rigidity. According to them, when driving on freshly laid asphalt, it worked like a clock. But when driving on the most common roads in Russia and in need of repair, even the smallest potholes were felt. As a result, the Korean automaker, taking into account the wishes, changed the settings to softer ones. Now what to expect from the rear suspension of the new generation of this car?

Let's do a test. So, let's get behind the wheel and let's go. Here we notice ahead minor damage roads. We concentrate, thinking how much it will shake now. And often we don't feel anything. Here in front of us appeared the cover of the sewer manhole. Of course, it's better to drive around, but we're doing a test. We're going straight. Yes, the feeling of moving is quite strong. As a result, after careful consideration of everything experienced, we come to the conclusion that the suspension system of a new generation car has become noticeably better than the previous one. Nevertheless, I would like to wish Kia to finalize the suspension for Russian roads.