Deciphering candles denso. Denso spark plugs - Japanese quality

The Japanese corporation Denso is one of the world's largest market players. car parts, operating as an OEM supplier for automotive assembly lines, and as an aftermarket manufacturer of spare parts, from to pumps high pressure. The company began in 1953 a close collaboration with Bosch, spreading its branches to 22 countries around the world.

Technologies Denso

In a huge catalog of manufactured under brand Denso spare parts occupy a considerable part. The reason for this is the quality and Full time job product development engineers. It was Denso who introduced the innovative iridium spark plugs, capable of creating a powerful and stable spark in harsh conditions, while maintaining a resource that is huge by the standards of traditional spark plugs.

More also has its own "highlights". Thus, the U-shaped groove in the side electrode, patented by the company 30 years ago, serves as a spark stabilizer - a decrease in the electrode area as close as possible to the central one increases the electrostatic field strength between them, and the breakdown of the spark gap occurs at a lower voltage. A spark occurs at the edges of the electrodes, in a better ventilated space, which reduces the effect of aerodynamics on ignition stability - it would seem that these are trifles, but on modern motors running on lean mixtures, even this can significantly affect the operation of the motor. The heat loss at the moment of the flash also decreases - the flame front at the moment of occurrence, when it is the weakest, has to be in contact with the narrow edge of the side electrode, and not with its entire plane.

Curiously, one of Japanese company NGK uses the same idea, but reversed: the V-groove in V-line plugs is cut into the center electrode. It is clear that this was done to comply with copyright, but as a result, NGK loses: if the side electrode with a groove can be welded to an arbitrary place relative to the central one, then candles V-line it is necessary to accurately position the side electrode relative to the groove in the central one so that they are parallel. Hence the complication of production, an increase in the percentage of defects (moreover, crookedly welded NGK V-line candles can also be found on sale).

Video: Denso ik20TT iridium spark plug

Denso iridium spark plugs

The creation of iridium spark plugs made them the "face" of the company. The Denso range now includes several series:

1. OEM spark plugs supplied to car factory conveyors have an unconventionally thick (0.7 mm) central electrode iridium and platinum-coated side electrode. This is done to ensure compliance with the declared resource of 120 thousand kilometers, although it reduces work efficiency (the thickness of the electrode affects).
2. Iridium Power - candles with an ultra-thin (0.4 mm) central electrode, and a U-shaped groove is made in the side electrode. For a long time these plugs were the most efficient in the Denso Iridium line until they were supplemented by new series.
3. Iridium Tough candles are a hybrid of the two previous ones: a thin central electrode is combined with a platinum-plated side electrode. These candles are close in resource to OEM candles, but work much better on natural gas, which is gaining popularity in Europe.
4. SIP plugs are a miniature masterpiece of technology: opposite the central iridium electrode, an equally thin platinum pin is soldered to the side electrode. This gives perfect spark stabilization, ease of ignition at high rpm and powerful boost. SIP plugs are Denso's most economical spark plugs, and you can feel the effect even on the least fancy engine. The development of SIP technology has become Iridium TT candles, which still have no analogues among competitors.
5. Iridium Racing are designed for ultra-tough operation in engines maximum level forcing. They do not have a side electrode at all - the spark hits right at the edges of the skirt. There is no side electrode - there is no risk of its overheating, leading to detonation, for highly accelerated motors, fatal.

In the age-old confrontation with NGK, it is iridium spark plugs that bring Denso leadership - holding 55% of the iridium spark plug market in general, in the field of SIP spark plugs Denso is actually a market monopolist (90%).

Marking candles Denso

Video: Candles in Japanese cars: Denso, NGK candle marking

Each manufacturer uses its own coding scheme for candle parameters. Denso has adopted the following for new series:

For Iridium TT candles, the scheme is different:

Old marking system:

For example, let's find an analogue of our classic candle A17DVRM. Here the difficulty is only (Denso does not compare with domestic standard), but from the catalog of analogues we can conclude that Denso will become the analogue of the Russian "17" "20". Since we need a 14x19 threaded shank, and the candle key used is 21, we need to look for candles with a prefix W20 in the "old" series (since VAZ candles have been exchanged for more than a dozen years) - for example, W20EPR-U, candles with a 19 mm shank ( E), protrusion of the central electrode ( R), built-in resistor ( R) and a U-groove on the side ( U). If there is a desire to put iridium candles, then IW20TT will do.

Comparison with competitors

Strict quality control and positioning in the world market in leading positions make it possible to consider Denso spark plugs as one of the favorites when choosing a new kit - indeed, in most cases, in terms of price / quality ratio, they will beat their counterparts. If the car initially uses iridium candles, especially with a rare shank size (for example, 10x19), then in fact the choice remains only between Denso and NGK. In this case, sympathies can also be on the side of Denso, as their range allows you to pick up more suitable type candles - long-lived Iridium Tough, high-performance Iridium TT or Iridium Racing, if you plan to squeeze everything out of the engine that it is capable of.

The main advantage of Denso is a relatively low percentage of fakes, which distinguishes them favorably from NGK, which have become almost synonymous with counterfeit goods (it is enough to fill in a spark plug on the same Ebay to see a huge number of offers “NGK type” at penny prices from China).

How to distinguish a fake?

Unfortunately, counterfeit products are also found under the Denso brand, moreover, knowing a number of design features original candles, it can be easily distinguished:

1. The contact cap must be smooth, nickel-plated. On fake candles it is rougher, sometimes oxidized (black coating)
2. The logo print on the insulator is applied either with small dots or with solid paint, but always neat (no distortions, smeared paint)
3. Soldering on the side electrode opposite the central one is clearly different in color
4. The sealing washer is firmly in place, cannot be moved up and down
5. Model marking (letter and digital code) on already printed cardboard packages of each candle is applied with separate stamps in different parts of the conveyor, therefore it always has an offset relative to each other. In clandestine productions, the packaging is printed in its entirety at once, on all boxes from the set it is the same in location.
6. On single-electrode spark plugs, the side electrode is always precisely oriented along the central one.

In injection and carbureted gasoline engines, the spark for ignition fuel mixture supplied through the spark plug. At first glance, it seems that there are no special requirements for such a part, however, when visiting a specialized store, a motorist will see a wide range of spark plugs that differ from each other in different parameters.

SZ features

Spark plugs sold in automotive stores, differ in various parameters:

• Manufacturer - Bosch, NGK, Brisk and others.
• Design - single or multi-electrode.
• Heat number.
• Spark gap.
• The metal from which the electrodes are made is a copper alloy, platinum, iridium.
• Connecting dimensions - the size of the threaded part, the thread pitch, the size of the turnkey hexagon.

In a word, without special knowledge it is very difficult to choose spark plugs. Spark plug markings and interchangeability tables can help in this matter. For example, the VAZ-2105 produces domestic candles ignition A17DV, which correspond to spark plugs from other manufacturers: L15Y from Brisk, BP6ES from NGK, W7DC from Bosch and 64 from Autolite. In fact, the same candle is marked differently for various manufacturers. What does the marking on spark plugs mean and how to understand it - we will tell below.

Spark plugs of Russian brands

Marking of spark plugs produced domestic producers, is regulated by the standard OST 37.003.081. Deciphering the marking of spark plugs is carried out by separate letters and numbers. For example, the thread of the body is indicated by the first letter. M14 x 1.25 is hidden under the letter A - the standard size characteristic of a conventional spark plug. Marking candles in the form of the letter M implies a threaded size of M18 x 1.5 - the threaded part of such a candle is larger and fits a 27 wrench.

Immediately after the letters comes a number indicating the glow number: the smaller it is, the more high temperatures a spark blows out. The index of the glow number of candles produced in Russia varies from 8 to 26. The most common are 11, 14 and 17 spark plugs. The marking of spark plugs according to their calorific value divides them into cold and hot. The first are installed on highly accelerated engines.

Below is an example of what spark plug markings can be and how to decipher them. Candles A17DV:

• classical carving;
• 17 - glow number;
• the size of the threaded part D - 9 millimeters; If given parameter less, then the letter is simply not indicated;
• the letter B usually denotes the thermal cone of a protruding type insulator.

The presence of the letter P in the marking - A17DVR - means that there is a noise suppression resistor in the central electrode. The letter M in the marking indicates the use of heat-resistant copper material to create the shell of the central electrode.

In the case of the designation AU17DVRM, the letter U stands for an increased size of the hexagon - 16 instead of the standard 14 millimeters. At larger size turnkey hexagon - 19 millimeters - the letter M is indicated: AM17B.

Marking candles of foreign brands

Spark plug foreign manufacturers are marked according to the same principle as domestic ones, however, other letters and numbers are used for designation. In this regard, motorists may be confused in the parameters of spare parts. To avoid this, the packages usually indicate which specific car the selected spark plugs are suitable for. The marking of candles is also often indicated in special interchangeability tables.

NGK

The Japanese company NGK is the world leader in the production of spark plugs. Its products are considered one of the highest quality and most reliable. NGK spark plug markings are as follows:

• Russian A11 corresponds to B4H.
• A17DVR can be replaced by BPR6ES.

Deciphering the marking of NGK spark plugs is simple:

• В4Н - diameter and thread pitch. The letter B corresponds to M14 x 1.25, other sizes are indicated by the letters A, C, D, J.
• Under 4 lies the heat number. This characteristic numbered from 2 to 11.
• The size of the threaded part is 12.7 millimeters, designated H.

Marking candles BPR6ES stands for: standard thread, P - insulator projection type, R - resistor, glow number - 6, length of the threaded element - E - 17.5 millimeters, under S are the features of the spark plug. If a number is indicated after marking with a hyphen, it indicates the gap between the electrodes.

Bosch

Bosch spark plugs are labeled in a similar way. For example, the WR7DC marking stands for:

• W - standard thread 14;
• R - anti-interference resistor;
• 7 - glow number;
• D - the size of the threaded part, equal to 19 millimeters;
• C - the electrode is made of a copper alloy (O - standard alloy, S - silver, P - platinum).

Bosch candles marked WR7DC, in fact, can replace domestic A17DVR candles, which are installed in the engines of VAZ cars of various models.

Brisk

Czech company - manufacturer of spark plugs. Was founded in 1935; its products are very popular among Russian motorists.

Marking of candles is carried out as follows.

• D - standard thread 1.25 mm, designed for 14 keys, body size - 19 mm.
• О - a special design of the candle, made in accordance with ISO standards.
• R - a resistor is used, while the designation X is the resistance of the electrodes to the formation of waste.
• 15 - glow number. It varies from 8 to 19, while the 13 index is not used by the Czechs - a superstitious manufacturer.
• Y - remote spark gap.
• C - copper core of the electrode.
• 1 - the distance between the electrodes, equal to 1 millimeter.

beru

German premium brand company-owned Federal Mogul. The main activity of the company is the production of various spare parts and their subsequent sale in secondary markets.

Spark plugs of this brand are marked in the following format: 14R-7DU. Decryption is carried out as follows:

• 14 - candle thread 14 x 1.25 millimeters.
• R - built-in resistor.
• 7 - glow number. Indicated by numbers from 7 to 13.
• D - threaded part 19 mm long, there is a cone seal.
• U - electrode made of copper and nickel alloy.

In the case of a different marking - 14F-7DTUO - the designations change somewhat: the dimensions of the spark plug are standard, while the nut is smaller seat(F), used in engines only low power with a sealing ring (T), the central electrode of the spark plug is reinforced - O.

Denso

Candle marking Denso ignition, for example SK16PR-A11, starts with the size of the part and the length of the threaded part. The numbers indicate the glow number, after which information is given about the electrodes and the features of the candle itself. The letters may vary depending on the Denso series.

Full decoding of the given marking:

• S - the central electrode is made of iridium alloy, diameter - 0.7 mm, there is a platinum overlay on the side electrode.
• K - the size of the hexagon and thread.
• 16 - glow number.
• P - the spark plug electrode protrudes 1.5 mm.
• R - built-in resistor.
• A - a characteristic for such a model of candles.
• 11 - the size of the gap between the electrodes.

Champion

Candles this manufacturer signed in much the same way as any other. For example, marking RN9BYC4 means:

• R - installed resistor, if E is indicated, then there is a screen, O - wire resistor.
• N - standard thread 10 mm long.
• 9 - glow number, numbered from 1 to 25.
• BYC - copper core and two side electrodes. The standard design is indicated by the letter A.
• 4 - distance between electrodes.

Varieties of spark plugs

Standard spark plugs are two-electrode: their design consists of a side and a center electrode. To date, such candles are the most common and most often installed on domestic cars. Many manufacturers offer multi-electrode devices that differ in the number of side contacts. Lifetime multi-electrode candles ignition is much larger than two-electrode ones, and does not depend on the glow number. It is extremely rare to find torch and pre-chamber spark plugs - they are not very popular and are not suitable for all engines.

Lifetime

The specific type of spark plugs and their brand have a huge impact on their service life. Nickel spark plugs, for example, are designed for an average life of 30-45 thousand kilometers of a car. Platinum analogues work many times longer - they are able to last both 70 and 80 thousand kilometers.

Candles with an iridium electrode vary depending on the thickness of the electrodes and their design, their "life" can be either 69 or 120 thousand kilometers. On platinum and iridium electrodes, carbon deposits are practically not formed, due to which the combustible mixture ignites many times better. The resistance of spark plugs does not depend on what specific metal is used in their production.

Greetings friends! Tell me which of the motorists bothers when choosing spark plugs. For the sake of decency, we asked a couple of questions to the seller and took the first ones that came across, often cheaper. And this is a respected, extremely wrong approach! Today, I will explain to you why! More specifically, we are interested in Denso spark plugs, because they are the world leader in the production of such products. That is, as for the brand, it’s really not worth choosing for a long time, they took the most popular and it’s in the bag! But even in this case, it turns out that there are more than enough nuances in casting a glow plug ...

"Denso" - the best candles in the world!

In 1949, the Denso engineering company was founded on the Japanese islands, which today has its subsidiaries in many countries of the world, of course, there is also a Japanese branch in our country. The concern is the main player in the global auto parts market and I must say it is absolutely deserved! The plant produces not only candles, but brand new generators, scanners, sensors, starters and other components come out of its assembly line.

Of course, due to the high quality and reliability of their products, all the major auto giants of the planet buy parts from Japanese manufacturer. Subaru, Opel, Toyota, Volvo, Citroen - these and many other corporations have been successfully cooperating with Denso for many years.

Range of spark plugs

Just think, the company's price list includes more than six thousand different positions, isn't it a little, right? This number of manufactured products is designed for 99% of the entire fleet of the Eurasian continent! As for candles, there is also plenty to choose from, let's look at some of the most popular series.

Candles standard

From the name itself it is clear that this is Denso's most popular spark plug. Such a model can be used on any gasoline engines all year round, and therefore is considered universal. Innovative U-groove technology, which is used in production, can significantly reduce saturation exhaust gases harmful impurities, ensure efficient fuel ignition and, most importantly, reduce fuel consumption by as much as 5%!

Taking into account a huge number of reviews, I have identified a few clear benefits Japanese candlestick over competitors:

• Significantly longer term services, up to 70 thousand km.
• Wide range of thermal coefficients.
• Efficient heat distribution.

In addition, due to the nickel coating, the standard candle differs high level heat resistance. If you have a middle class car, the best option there will be something like Denso k20tt! A spark plug of this type, even if it costs a little more domestic analogues, but sorry, and her resource is higher!

Platinum line

Denso was the first to cover the central and side electrodes with platinum, so the specialists wanted to increase the service life of the candles. And I must say they did not fail, not only did the declared resource of candles grow to 100 thousand kilometers, but also almost all competitors began to use the technology, is this not a sign of success!

Moreover, candles of this type (for example, here k20pr u11) are able to produce an effective spark even with a significant drop in battery voltage! What cars are they recommended for? According to statistics, Japanese and not only automakers prefer the Platinum line when producing premium cars. Logical, isn't it?

Iridium Power

Iridium is a metal whose characteristics are very similar to platinum. So, it has excellent resistance to corrosion even at critical temperatures (2000 Celsius is not the limit!), while the cost of iridium is an order of magnitude lower than platinum. The technology for coating electrodes with iridium was also developed at Denso. Candles of this group, such as ik20tt4, have whole line positive benefits:

• Wear resistance and therefore durability- no lower than the platinum models, and the price is lower!
• Powerful spark - allows the motor to instantly respond to the position of the accelerator.
• Ultra-thin central electrode with a diameter of only 0.4 mm(there are no analogues at the moment) - eliminates the possibility of interruptions in the operation of the engine.

In addition to those described above, you can find 4 more types of Denso candles on the shelves of a car dealership, and we will briefly consider them.

Iridium Tough

Combination of two previous lines, equipped with a 0.7 mm needle ground electrode. Such a candle will reduce emissions harmful substances from the exhaust, the fuel consumption of your car by 7%, while increasing its power!

Iridium Racing

Produced specifically for sports cars(karts, rally cars, etc.) using special technology. Its uniqueness lies in the same electrode, this time the central one is made of an alloy of rhodium and iridium, and platinum tips are used for the side electrode.

Note: the use of sports candles on ordinary cars allowed, but required without fail take into account the glow number, because such a product is designed only for high-octane fuel.

Nickel (Twin Tip)

Very similar in characteristics with the standard type, including the cost. Their distinguishing feature is again in the electrodes, which are made of nickel. Surely many of you have heard about the denso k16tt in motoring circles. A spark plug of this type will reduce consumption by up to 7% and make it easier to start the engine, stable glow ignition and a powerful spark of k20tt help in this. Applicability - fully universal fit on 80% of all cars in Europe.

Disadvantages of Denso spark plugs

WITH positive characteristics spark plugs of this brand, I hope everything is clear, I will not repeat myself and immediately move on to the minuses. There are several of them:

1. Valuable - it is somewhat higher than our counterparts, but the difference in quality, as I said, is quite significant.
2. Vulnerability to counterfeit- just a huge number of underground enterprises on the entire planet, releasing copies Japanese candles Denso, so you need to be very careful when choosing.
3. Knocked gap - for most new parts, the operating gap will have to be set by the buyer.

If you really want to overpay for good reason, you will have to prepare for the purchase! First of all, it is important to be able to read the markings of candles! Here I will prompt, the decoding is carried out according to the table located above.

How not to buy a fake?

If you are already pretty tired of fakes, you got a misfire in the ignition, you don’t need to look for reasons, everything is clear - marriage! I will give you a couple of tips for high-quality identification of the original!

1. The body, thread and, in general, the candle, are not of high quality, often this can be seen with the naked eye.
2. The surface of the contact output should not be glossy, but matte.
3. The very inscription on the candle on a fake is easily torn off.
4. When using a duplicate, fuel consumption may increase, and traction may decrease.

I am sure you managed to separate the "flies from the cutlets" and right now you are enjoying the virtues of Japanese Denso candles. If this is far from the case, remember, do not get excited, the complete absence of a spark is not at all a sign of a malfunction, it may be required). Hope it was helpful, all the best!

The operation of a gasoline internal combustion engine is largely dependent on spark plugs. Only a powerful and stable spark can ensure the combustion of the fuel mixture with the release maximum number energy.

In this article, we will look at Denso spark plugs, which are very popular among both motorists and professionals. We will understand their design features, the technologies used in their production, and also discuss the main advantages. The information is based on feedback from car owners.

A few words about Denso

Denso Engineering Company was founded in Japan in 1949. Its main specialization is the manufacture of automotive components: spark plugs and glow plugs, magnetos, generators, starters, engine management systems, scanners, sensors, etc. Thanks to constant scientific and technical activity and its own advanced developments, Denso has become a world leader in production of electrical appliances. Concerns such as Volvo, Opel, Toyota, Subaru, Citroen complete their cars with parts from this particular company. Subsidiaries Denso are located in Japan, China, Taiwan, Singapore, Canada, USA, Brazil, Great Britain, France, Russia, Turkey, India, UAE, Morocco. The company's products are popular all over the world due to their quality and reliability.

Products of the company "Denso"

Spark plugs are not the main products of the company, but only thanks to them it has gained such fame. The concept for the development and sale of these parts is built in such a way as to provide brand stores and authorized technical stations the best of patented technologies. All Denso spark plugs are manufactured to the highest quality standards and are ISO 9000 and QS 9000 certified.

Range

The company's products include more than six and a half thousand constantly updated positions and are designed for 99% of all cars produced in Europe and Asia. The range of spark plugs includes the following series:

• Standard.
• Platinum (Double Platinum).
• Iridium power.
• Iridium Tough.
• Iridium Racing.
• TwinTip.

Standard candles

The company's most popular product Denso - spark plugs positioned as standard. They are ideal for all-weather use in any gasoline engines, therefore they are considered universal.

Thanks to the U-groove technology developed by experts , spark plug standard type can reduce fuel consumption by up to 5%. At the same time, its effective ignition is ensured, and the amount of harmful impurities in the exhaust gases is also reduced.

Among the distinctive features of standard Denso candles are:

• large resource (50-70 thousand km);
• excellent heat resistance due to nickel plating;
• efficient heat distribution;
• wide range of thermal coefficients.

Denso's standard spark plugs received the largest number positive feedback among owners of cars of the middle class. They are reliable, serve for a long time, and cost a little more than domestic counterparts.

Platinum

The company's unique product Denso - spark plugs Platinum series, characterized by a very long service life. Today, many manufacturers use the technology of coating the central and ground electrodes with a layer of platinum, but for the first time it was applied by Denso. These spark plugs take care of 100 thousand kilometers without any problems. And this is not the limit, but only the declared resource.

But they are not only distinguished by their resource. Thanks to the superconductor coating, they are able to provide easy and stable engine starting even when the voltage drops. battery. Spark plugs from the Platinum series are supplied to the conveyors of most Japanese automakers that produce premium cars.

Iridium Power

Iridium is an element of high density and excellent corrosion resistance even at temperatures exceeding 2000 0 C. It is very close to platinum in its properties, although it has a lower cost.

Denso Iridium spark plugs are also known for their wear resistance and durability, although they are much cheaper than their platinum counterparts. They are not inferior either in terms of reliability or resource.

Iridium electrode coating technology is also developed and patented by Denso. The distinctive features of these candles include:

• the thinnest central electrode to date (0.4 mm), excluding misfires;
• a powerful spark that allows the engine to instantly respond to acceleration;
• long service life.

Iridium Tough

Iridium Tough Denso spark plugs are the most successful symbiosis of the two technologies described above. A feature of their design is a double needle-shaped side electrode made of a special platinum alloy. Its thickness is only 0.7 mm. It has a significantly less cooling effect on the spark, due to which, at the moment of ignition, combustible mixture a stable core of flame is formed. The results of testing candles Iridium Tough showed that this technology allows you to:

As for the resource, they are designed for 100 thousand kilometers. They are completely versatile, perfect for both gasoline engines, and for engines running on liquefied gas.

Iridium Racing

Iridium Racing spark plugs are designed by the company specifically for racing cars. They are used for both karts and for the uniqueness of their design lies in the use of an alloy of iridium and rhodium for the central electrode, which provides instant acceleration and almost complete combustion of the fuel mixture in the cylinders. Platinum tips on the side electrodes allow you to get the most stable and powerful spark.

The use of Iridium Racing in conventional cars also allowed, however, the type of engine should be taken into account, because these candles are designed for high-octane gasoline.

TwinTip

Spark plugs "Denso TT" (TwinTip) are designed for those drivers who care about engine stability and fuel economy. They are equipped with nickel center and side electrodes. This technology is also a development of the company. In terms of efficiency, these candles are in no way inferior to the models described above, but they are much cheaper. Their other benefits are:

• absolute universality (suitable for any gasoline engines and power units running on gas);
• a huge range of models, designed for 80% of all European cars;
• stable ignition, powerful spark, so that fuel consumption can be reduced by up to 5-7%;
• easy engine start.

SIP

In 2003, Denso presented super-ignition plugs, produced under the name SIP. Due to thin electrode technology, high quality and long service life, they are the most demanded on conveyors. largest manufacturers middle class cars. The range of these candles is unusually wide. Judge for yourself. There are over 11,000 models for motorcycles and small boat engines alone. What can we say about cars.

Their popularity is due to:

• the possibility of improving the flammability of the fuel mixture with their help;
• reduction of fuel consumption up to 5%;
• increase in the power of the power unit up to 4%;
• a large resource (100 thousand km);
• a huge range of modifications.

Selection of the most suitable model

In order to choose the right spark plugs, you will need to know:

• engine's type;
• type and recommended fuel;
• recommended glow value for candles provided by the manufacturer;
• interelectrode gap;
• diameter of the threaded part of the ignition element, etc.

If you are the owner petrol car middle class, it hardly makes sense to spend money on expensive platinum candles. In this case, models from the Standard series would be ideal. Decide on the glow number and the diameter of the "skirt", and you can safely buy any of the modifications.

Does your car run on LPG? Then pay attention to the Denso K20TT spark plugs. They will fit most cars with gas power units. Well, if you are driving sports car, and even participate in races, get Iridium Racing without much hesitation.

In order not to make a mistake with the choice, motorists are advised to buy Denso spark plugs in a company store. So you can be sure that you are offered a Japanese original, and not a fake from China. In addition, in the store you can get advice on the applicability of a particular model.

The tightening of toxicity standards for car exhaust, the increase in the cost of fuel and the reduction in its consumption, lead to the fact that more and more drivers have to pay Special attention such an important part of the car - the spark plug. Along with the usual ones, more and more motorists began to install Denso companies.
It is believed that iridium candles:

1. They have a longer service life compared to conventional copper ones.
2. Reduce fuel consumption due to more complete combustion of the mixture.
3. Extend the life of the engine and increase its power.

However, when buying candles, you should take into account the fact that, like any part, the denso spark plug is selected according to the car and you should not neglect the manufacturer's recommendations in this case.
In matters of proper selection denso spark plugs by car brand, installation features and product types, we will try to figure it out below.

Denso corporate headquarters

To date, the Denso brand has a wide range of manufactured spare parts and auto components, but the production of spark plugs is a priority for the company. It should also be noted that the production of candles is carried out not only for cars, a recognizable brand can be found on motorcycles, garden equipment, and water boats.

Denso iridium spark plugs have the world's thinnest center electrode with a diameter of just 0.4mm.

The latest developments of the corporation have made it possible to achieve significant results in their products. So Denso iridium candles incorporate the world's thinnest iridium electrode - its diameter is only 0.4 mm, while they have an impressive power reserve, which allows them to be used in the most extreme conditions.
Denso spark plug features
As mentioned above, the application of thin electrode allows the denso iridium spark plug to get a powerful spark at a lower voltage value at its contacts. To one more design feature Denso, one can attribute the use of a narrowed U-shaped ground electrode, which also has a beneficial effect on the formation of a spark and, as a result, complete combustion fuel-air mixture. In addition, quenching resistors are installed in the candle body, designed to protect onboard systems car from radio interference.

The main advantages and disadvantages of using iridium candles

Denso Spark Plug Plasma Discharge

To see a more complete picture from the use of high-tech candles, it is first necessary to understand the positive and negative sides installation of this product on the vehicle.
The advantages include:

All the benefits of using Denso iridium spark plugs can only be experienced on modern vehicles with high-tech engines.

• Reduced fuel consumption - an average of 7%;
• Reduced toxicity of exhaust gases;
• "Precious" candles are not so demanding on fuel quality;
• Simplified engine start at low temperatures;
• Three times the life of denso iridium plugs compared to conventional ones.

As with any industrial product, along with advantages, there are also disadvantages.
Let's consider the main ones:

• The tangible effect of using iridium spark plugs can only be felt on modern cars with high-tech engines;
• The high cost of products. Of course, every car owner, when choosing consumables for his car, is guided by this parameter. For example, the price of a Denso candle today is about 700-800 rubles, and this is already 2800-3200 rubles for a set of 4 pieces, while a set conventional candles can be bought for 400 rubles;
• The high cost of the product gives rise to another factor - the presence of fakes on the market.

What's in the range

Denso spark plug range

The company's product range is represented by a wide catalog of Denso candles.
It includes spark plugs series:

• Iridium Power;
• Iridium Tough;
• Iridium TT;
• Iridium Racing.

Candles Denso selection by car

When conducting Maintenance petrol car, along with various filters, technical fluids And belt drive– the spark plug is the same consumable and must be replaced periodically.
For the convenience of selecting Denso candles for a car, there is an online service on the manufacturer's website. When entering the product search page, the buyer faces two paths:

1. You can select a product by the make and model of the vehicle;
2. By marking, specification and item number.

Electronic catalog of the Russian-language website Denso

Marking of Denso spark plugs

The range of manufactured products is very wide, so it is not an easy task for an ordinary car owner to independently select denso spark plugs for a car brand.

Installing hot spark plugs car factory is common practice. "Cold" candles are placed on forced engines for normal operation at high speeds.

Along with overall dimensions products, very important parameter for any spark plug, the glow number is considered. Depending on this indicator, candles are "hot" and "cold".
Hot - installed at the factory, when assembling the car and are a kind of standard product.
Cold - the same candles only with a lower heat transfer rate. They are designed to work, as a rule, on uprated engines, at high speeds.
Produce correct selection Denso candles can be used using the table below. detailed information, indicating all existing options products, will allow even a novice car owner to fully decipher denso spark plugs and make the right choice.

Table of symbols in the marking of Denso spark plugs

What to choose from

To date, of the iridium candles, the most popular products are considered to be the products of two Denso companies and NGK. Surely every car owner, going into a car shop, will be puzzled by the question - which candles are better than Denso or NGK? It is difficult to answer this question unambiguously, both manufacturers produce excellent products, value the quality of the goods and their reputation.
When conducting comparative tests of candles, authoritative laboratories noted that both brands have the best performance compared to other manufacturers of similar products. Between themselves, Denso and NLC practically do not compete - the difference in performance can be safely attributed to an error measuring instruments, however, some features can still be distinguished:

1. Many automakers install Denso Iridium spark plugs on the assembly line when assembling their cars. On this basis, you can indirectly reduce the likelihood of running into a fake in your car.
2. It is believed that the NGK brand is more famous than Denso, and this is usually the best signal to start producing famous products in clandestine factories.

What is better Denso or NGK? No reliable research has been done on this topic. One thing is clear - you must strictly follow the instructions of the automaker.

1. An important aspect when buying any auto products is the price - denso iridium candles in this regard are slightly cheaper than NGK.
2. On the network, at specialized auto forums, there was information that:
   • Denso candles tend to loosen in its threaded part;
   • For the first 500 km of the way, Denso's spark gap increased.

The last two facts can be confidently attributed to clearly counterfeit products, because today this phenomenon is not uncommon.
Despite all the pros or cons, each car owner chooses for himself which candles are better than nzhk or denso, since it is not easy to determine the clear leader here.

Is the game worth the candle?
If in search engine the world wide web, drive in the words Denso candles reviews or in a conversation with experienced servicemen ask a question about reviews on Denso candles? You can meet both positive and negative experience in the operation of high-tech products.

Without a doubt, high quality and durability are the main criteria by which Denso iridium spark plugs can be characterized. On the one hand, the high price will scare away the ordinary motorist from buying. On the other hand, the high cost of “precious” candles can easily be justified by their threefold resource, compared to conventional and high quality execution. Only an experienced mechanic or driver of an expensive foreign car with a high-tech engine will be able to truly appreciate their benefits and effect.