candles tt. Denso spark plugs: the right choice for your car

DENSO TT spark plugs produced using the patented "Super Ignition (SIP)" technology. They provide longer life, reliable starting in all weather conditions, low emissions and better fuel efficiency. The versatility of this type of spark plug makes it possible to cover a large fleet of modern cars with a limited number of articles.

In 2010, the serial production of Nickel TT spark plugs began, which is based on an innovative technology that is the result of many years of research and development carried out at the DENSO engineering center in Japan. The research was aimed at solving the dual problem of protecting the environment and achieving high technical efficiency.

Nickel TT spark plugs– the world's first spark plugs with thin electrodes without the use of precious metals. Center and ground electrodes with a diameter of 1.5 mm - thinner than standard nickel candles. As a result, DENSO's Nickel TT spark plugs exhibit more stable and consistent sparking and more efficient ignition of the air-fuel mixture.

Nickel TT spark plugs outperform standard nickel spark plugs in terms of ignition performance and provide greater fuel efficiency. This is achieved by complete combustion of the mixture in the cylinder, which increases the efficiency of the engine and prolongs its life.

Specifications:

Features of candles Denso Nickel TT

• fuel efficiency. Exceptional flammability ensures better combustion, even with leaner mixtures, which reduces misfiring compared to standard nickel spark plugs.
• Emission reduction. Stable sparking and fast flame front propagation lead to more complete combustion and lower fuel consumption, significantly reducing CO, CO2 and HC emissions.
• Consolidated assortment. The versatile Nickel TT range includes a limited number of SKUs that still cover the vast majority of the most popular vehicles.
• Designed specifically for starting the engine at low temperatures. For the formation of a spark, a lower electrical voltage is required due to lower heat losses on thin electrodes. This reduces the load on the ignition coil and on the engine's electrical system as a whole, providing faster, more powerful starts even in cold weather.

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 of the maximum amount of 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 of "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 behind the development and sale of these parts is built to provide brand shops and authorized service stations with the best of patented technology. 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 most positive feedback from middle-class car owners. 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 differ not only in resource. Thanks to the superconductor coating, they are able to provide easy and stable engine starting even when the battery voltage drops. 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 of the combustible mixture, a stable core of the 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 universal, ideal for both gasoline and LPG engines.

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 passenger cars is also allowed, however, the type of engine must be taken into account, because these plugs 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 versatility (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. Thanks to thin electrode technology, high quality and long service life, they are the most sought after on the assembly lines of the largest mid-range car manufacturers. 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 of a middle-class gasoline car, 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 are suitable for most cars with gas power units. Well, if you drive a 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.

(SZ) are an integral element of the ignition system of any car. Accordingly, if you want them to last for a long time, the choice of these components must be approached with all responsibility. In this article, we will talk about what Denso spark plugs are, what features they have and how the selection is made by car.

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SZ features

So, if you decide to purchase Denso ik20, k20tt, w20tt, k16tt, then before you make a selection for your car, we recommend that you familiarize yourself with the features of the product. It should be noted that the Japanese brand Denso is the first to patent the TwinTip technology used in the TT line with a central nickel electrode with a reduced diameter of 1.5 mm. In addition, the size of the ground electrode was also reduced to a diameter of 1.5 mm.

So, let's move on to the features that the original iridium spark plugs Denso ik20, k20tt, w20tt, k16tt and others with different glow ratings have, unlike fakes:

1. SZ models ik20, k20tt, w20tt, k16tt and others with improved sparking actually achieve the maximum efficiency of iridium candles. However, the production of such SPs takes less money, since they do not use precious materials.
2. According to the manufacturer, the SZ ik20, k20tt, w20tt, k16tt and other models are characterized by improved performance at significantly lower costs.
3. Nickel TT devices ik20, k20tt, w20tt, k16tt and others require less voltage to start the power unit. Accordingly, the engine can be started much faster even at the lowest temperatures.
4. As a result, the models ik20, k20tt, w20tt, k16tt and others have a thin central electrode with a diameter of 1.5 mm (standard - 2.5 mm). Accordingly, the resulting spark is more powerful, the efficiency of its work is higher. And this, you see, is very important, especially at low temperatures.

Range

The Denso range includes many products with different heat ratings.

We are talking about both iridium and platinum, as well as nickel SZ:

• Nickel (Nickel) TT;
• Iridium TT;
• Standard;
• Platinum Longlife;
• Iridium Power;
• iridium racing;
• Iridium Tauf.

Advantages and disadvantages

Below are the main advantages and disadvantages of iridium and nickel SZ models ik20, k20tt, w20tt, k16tt and others with excellent heat rating. The information below is based on official data as well as consumer reviews.

Advantages that will allow you to make a choice:

1. Reducing the level of emissions into the atmosphere. As a result of the improved sparking in ik20, k20tt, w20tt, k16tt and other models, the combustion process itself is more stable. Accordingly, the operation of SZ ik20, k20tt, w20tt, k16tt and other options can reduce fuel consumption, as well as reduce CO and CH emissions into the atmosphere.
2. Due to the improved sparking of CZ with a good glow number, the ignition index is improved. As a result, candles ik20, k20tt, w20tt, k16tt and others from the Denso brand allow you to ignite even the most lean combustible mixtures. Accordingly, misfiring in the system will occur much less frequently when compared with other SZ or fakes.
3. If you choose originals with an excellent heat value, instead of a fake or standard SZ, then during normal operation of the sludge unit, you can save five percent on fuel consumption - gasoline, diesel or natural gas.
4. If your car runs on natural gas, then Iridium candles with a high glow number of the Tauf (Tough) line will suit you. Such SZ are equipped with an additional platinum tip on the side electrode. In addition, they are characterized by high wear resistance, which is especially important for power units operating on gas. It should be remembered that the temperature of the internal combustion engine on gas is higher. Accordingly, if the engine runs on gas, then the fuel mixture will burn at elevated temperatures.
5. Possibility of self-cleaning. The use of modern technologies allows candles to be cleaned on their own during long-term operation, so the problem of soot is no longer terrible (the author of the video is Hands in Oil).

Flaws:

1. Lots of fakes. In fakes, the glow number differs from the original. Accordingly, the owner of a car running on any fuel, including gas, will not be able to experience all the benefits of a Denso product.
2. If the product itself is not original, its service life will be lower. However, car owners of cars running on diesel and gas periodically write in reviews that the service life of the originals is less than stated.
3. High price. But in most cases, this is due to high quality.
4. On some new SZs, the gap was not initially set to work. This is confirmed by the reviews of motorists.

Marking

If you want to make the right selection of iridium candles for your car, it will be useful for you to familiarize yourself with the marking and decoding of the symbols, which are given in the table below:

Marking and interpretation of the designations of Denso spark plugs

How to distinguish the original Denso from a fake?

So, in order to purchase original SZ for your car, you need to know exactly how not to fall for a fake. There is a method of checking in appearance, as well as the internal structure of the device.

A visual aid - what is the difference between Denso originals and fakes

Of course, when buying, you will make a visual inspection:

1. On fakes, the contact terminal of the candle has a glossy surface, while on the originals it is more matte.
2. Unlike originals, Denso branded print on fakes can be easily scraped off. It is very difficult to erase this text on the original.
3. As for the case itself, on fakes it is made of less quality, in particular, we are talking about a low level of surface treatment.
4. The quality of threading, as well as the electrode itself, is lower in fake SZ, this can be seen with the naked eye.
5. When using a fake, you will notice how the power of the power unit begins to decrease on climbs, as well as at high speeds.
6. Fuel consumption can be increased, this must be monitored.
7. Over time, the side electrode SZ will begin to melt, periodic diagnostics will help to understand this.

Candle examinations are a signature dish of the magazine, but ... We never added one important component to this dish - as if by accident. But you are wondering how the characteristics of candles will change after long-term work in real conditions? The problem is that one extrapolation is not enough here: you need to torment them for at least 30 thousand km. And this is long, expensive and very dreary: for each set of candles, at least a month and a half of bench motor spinning! Nevertheless, identical engine stands were prepared.

We decided to take candles oriented to most of the eight-valve valves operated by us: on the “large” hexagon (size 21) and with a conditional glow number of 17. But we tried to take a variety of designs. But the price was limited: no more than 800 rubles per set. After all, launching iridium favorites with elegant thin electrodes into such a “run” is like bringing Real Madrid and a team from our second football league ...

As a base, we took ordinary single-electrode candles: European WEEN 370 and Japanese NGK BPR6ES-11. They were accompanied by three-electrode EZ-T17DVRM from Engels. For refractory materials and alloys, the cheapest option with yttrium electrodes "played": the Czech Brisk A-line LR15YCY-1. The positions of platinum were defended by Bosch Platinum WR7DPX with a thin central electrode. And finally, the DENSO W20TT with the original side and center electrodes made of chromium-nickel alloy. Special protrusions are pressed on them, organizing a spark gap - this is an attempt to realize the advantages of thin-electrode candles without any precious metals. We remind you: we compare designs, not brands!

The test procedure is obvious. First, all the sets were sequentially installed in the same bench engine - a VAZ injection eight-valve. We carried out a standard test cycle - we got a starting base. Relative to it, the deterioration of engine performance was further monitored as the candles aged.

Basic figures do not contain surprises. Simple single-electrodes performed smoothly: the differences only slightly got out of the measurement limits. But the three-electrode EZ-T17DVRM, the thin-electrode Bosch Platinum WR7DPX, and the DENSO W20TT gave a noticeable improvement in both power and engine efficiency. Although, of course, intentional 2-3% improvements will give a visible effect for the wallet only during long runs, when gas consumption is considered not in cans, but in barrels. But this is exactly what we originally wanted to clarify.

Of course, our neighbors in the workshop cursed us: with the roar of our stands, we got them a lot. From seven in the morning until nine in the evening - three months, three stands ... However, everything ends sometime: the motors are stopped, the candles are unscrewed. The electrodes and insulators turned black, covered with deposits, traces of metal erosion are visible in some places. But even the usual single-electrode sets, which we took as a base, passed all the laps with honor. Not a single candle had to be changed during the race: here you have a loaded test cycle on domestic gasolines. This means that the resource of at least 30 thousand km of run, declared by almost all manufacturers of even the simplest candles, is not just a marketing ploy.

And how much did the performance deteriorate as a result? Let's see ... To do this, in the control motor - the same one on which the initial cycle of comparative tests was carried out - they put sets beaten by life and repeated the measurements. The results obtained were compared with the initial data. Now you can safely compare the numbers.

Basic sets of candles retained their performance, but significantly reduced engine performance. Consumption increased by about 6%, CO and CH toxicity jumped by 8–10%. Why? Because, under pressure, gaps of sparking began to appear, and these are gaps of flashes! And the motor controller, catching excess oxygen in the exhaust pipe, enriched the mixture. Hence the extra expense, and high toxicity. The decrease in the parameters of Brisk A-line was less than that of the basic candles, but also noticeable.

The leader of the test supposed in advance - the “platinum” Bosch performed better, but the shape of the central electrode, completely recessed into the insulator, played a clearly negative role. At one time, we already noted this when we tested spark plugs on gasoline with metal-containing additives ( ZR, 2007, No. 1 ). The explanation is simple: a spark of a thin-electrode candle with a conventional central electrode extended from the insulator, as it were, licks its tip, cleaning it from deposits and deposits. But the Bosch Platinum candle is deprived of this advantage: as a result, the kit lost the palm to the domestic EZ-T17DVRM three-electrode electrodes and the Japanese DENSO W20TT. These kits showed a deterioration in performance in all respects, but it only slightly went beyond the measurement error. So for them 30 thousand km is only the heyday of life! Unless, of course, on the way you meet a gas station with a particularly vile gasoline that can kill anything.

And one more thing: as usual, we conducted a test cycle, which we call emergency. The regular generator is disconnected from the motor, an “empty” battery is placed, and the on-board network is powered from a laboratory current source. This allows you to track the reaction of candles to a decrease in voltage in the on-board network. This is where the differences between the kits - both new and used - came to light most clearly. And again, the leaders are products declared as especially long-playing - DENSO W20TT, Bosch Platinum and our multi-electrodes. And what the candles looked like after the tests, the photos show. Race participants are listed alphabetically.

In conclusion, a little arithmetic. For 30 thousand km, the average "Vazik" eats about 2500 liters of fuel, taking about 65 thousand rubles from the budget. If we take into account the average increase in consumption, then, taking into account the initial differences, the savings from the use of long-playing candles will be a couple of thousand re. Estimate the usefulness of a real increase in power and reduce emissions for yourself.

DETAILS

The German kit with a thin platinum center electrode was within our price range. Bosch Platinum WR7DPX:

However, the ingenious design with a recessed electrode proved to be average, yielding to the three-electrode from Engels.

For refractory materials and alloys "played" and the cheapest option with yttrium electrodes - Czech Brisk A-line LR15YCY-1:

Visually, by design, these candles do not differ much from conventional single-electrode wires, only the tip of the side electrode is “sharpened” on a sharp edge. And that helped them outperform the base candles.

Japanese candles DENSO W20TT:

Here, on the side electrode of a special chromium-nickel alloy, a protrusion is pressed, forming a zone of increased intensity of the spark discharge. As a result, these “Japanese women” outplayed everyone.

European WEEN 370 - the simplest single electrodes:

On the whole, they passed the test, although the resulting increase in consumption by almost 6% suggests that they were practically leaving theirs.

Japanese NGK BPR6ES-11 - single electrodes are more expensive than European ones:

5

The results are about the same: they did not give up, but, judging by the deterioration of the parameters, they had to live ...

Set of three-electrode candles EZ-T17DVRM originally from Engels promised an increased resource:

Well, by the end of the run, multi-electrodes really looked better than their “single-headed” counterparts.

WHY CANDLES AGE

What happens to candles during their operation? Why do their scores change?

There are several factors. The most important is the erosion of the metal of the electrodes under the action of a repeated intense spark discharge. As erosion processes develop, the size and geometric shape of the spark gap change. With an increase in the gap, the intensity of the discharge decreases, up to its complete cessation in some operating modes, in which the conditions for sparking and initial ignition of the mixture in the cylinder are difficult. This is idling, maximum loads, cold start.

In addition, while working in the cylinder, the surfaces of the insulator and electrodes are covered with a layer of soot - under certain conditions, conductive. In the extreme state, it can form the so-called soot bridges that shunt the spark plug group.

Under the influence of high temperatures, the destruction of the protective coating of the candle insulator (glaze) is likely - ceramics begin to be saturated with sediment particles. The breakdown resistance of the spark plug decreases.

Finally, thermomechanical cyclic stresses in the insulator can also lead to its destruction.

QUESTION ANSWER

- What do the terms "dry" and "crude toxicity" mean?

These are engine slang terms. Raw toxicity - the one immediately after the engine, before the converter. Dry - after the converter: what goes to the outlet.

- Why do we need different candles if the converter burns out the unburned mixture anyway?

It burns out far from everything (according to CH and NOx - up to about 30-50%). Therefore, the greater the raw toxicity, which is affected by suppositories, the greater the dry toxicity. Moreover, the neutralizer does not successfully extinguish toxicity in all modes: in particular, when the mixture is enriched, that is, during acceleration, start-up, heavy loads, it also works inefficiently. And the converter does not affect the power, start-up and fuel consumption at all.

- A modern controller reacts to missed flashes by igniting the Check Engine. And how does the neutralizer respond to this?

The neutralizer does not react to flash passes in any way. At least you won't see it in diagnostics. If the process is too run, then we get a decrease in its service life and, possibly, an early failure. The residual oxygen sensor responds to gaps: it catches excess oxygen not used in the cylinder and gives a signal to enrich the mixture.

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