The information presented on our website regarding the parameters of various types of spark plugs from well-known manufacturers allows you to better navigate in modern models. This article discusses all the features and benefits of Denso's advanced twin-tip iridium spark plugs, which are the company's latest development.
The uniqueness of the TT series products
Taking into account the peculiarities of gasoline power units, popular brands offer a large range of models. Denso is no exception, which continues to introduce new technologies into production and has developed many modern plugs for internal combustion engines.
After analyzing the shortcomings that are inherent in many standard products, the company was among the first to master the production of iridium spark plugs. The patented technology allows you to create unique iridium and platinum alloys that are used in the manufacture of electrodes and ensure a long service life.
The uniqueness of the products lies in the fact that the design uses two counter electrodes:
- very thin central iridium 0.4 mm in diameter;
- grounding rod with a diameter of 0.7 mm, made of platinum.
These products represent an excellent alternative to standard products. The range of products in this series allows you to choose the optimal part for a wide range of vehicles.
DENSO TT Super Ignition Plugs
Denso iridium plugs also feature a protruding insulator. Thanks to this solution, it acquires the property of self-cleaning, as well as resistance against overheating. The center electrode is attached using modern laser welding technology, which is patented by Denso. Such a connection can withstand heavy loads and all types of influences. The resistance of Denso Iridium TT against the formation of carbon deposits ensures a long service life of up to 120 thousand km, which is more than the models of many manufacturers, including NGK and BOSCH.
The diameter of the electrodes of Denso products is 0.2 mm smaller than that of similar products from NGK. Thanks to thin electrodes, it is possible to increase the density of the electric spark and not create obstacles for the propagation of the flame front in all directions. Therefore, in terms of power and fuel efficiency, the products compete with iridium plugs from the well-known manufacturer BOSCH.
Reliable and powerful spark for fuel economy
Denso TT plugs are superior in performance to all other types of iridium plugs with a larger electrode. Thanks to the optimal cycle of accelerated and complete combustion of the combustible mixture, the engine power increases and its dynamic characteristics are improved. The advanced design of these products guarantees:
- improved sparking, allowing you to effectively ignite even a lean fuel mixture;
- reliable starting of the power unit at any temperature;
- extended replacement interval;
- better dynamic characteristics of the motor;
- minimum emissions of harmful substances;
- stability of the engine at any speed.
These positive properties of Denso iridium spark plugs can save fuel consumption by up to 5%. In addition, since the center electrode has an ultra-thin tip, a strong and stable spark requires significantly less voltage than the standard model. As a result, the throttle response of the engine increases and the service life of the parts of the cylinder-piston group is extended. The disadvantage of products can only be attributed to their higher cost.
You can always buy Denso iridium spark plugs at a bargain price in the IXORA auto parts hypermarket, which offers a wide range of spare parts, including spark plugs for foreign cars. With the help of professional consultants, you can quickly select quality parts for any foreign car.
New Denso Iridium TT plugs available for order are presented in the table:
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Candle examinations are the magazine's signature dish, but ... We never added one important ingredient to this dish - as if by accident. But you are wondering how the characteristics of the candles will change after a long work in real conditions? The problem is that you can't do with extrapolation alone: \u200b\u200byou need to torture 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-top twisting of the motor! Nevertheless, we managed to prepare identical motor stands.
We decided to take candles oriented to most of the eight valves we operate: to a “large” hexagon (size 21) and with a conventional glow number 17. But we tried to take various designs. But the price was limited: no more than 800 rubles per set. After all, launching iridium favorites with graceful thin electrodes on such a "run" is like bringing Real Madrid and a team from our second football league together ...
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. The cheapest option with yttrium electrodes "played" for refractory materials and alloys: the Czech Brisk A-line LR15YCY-1. Platinum was defended by the Bosch Platinum WR7DPX with a thin center electrode. And finally, DENSO W20TT with original side and center electrodes in chromium-nickel alloy. Special protrusions are pressed on them, organizing the spark gap, this is an attempt to realize the advantages of thin electrode spark plugs without any precious metals. We remind you: we compare designs, not brands!
The test procedure is obvious. First, all the kits were sequentially installed in the same bench engine - a VAZ injection eight-valve. We carried out a standard test cycle and received a starting base. In relation to it, the deterioration of engine performance was subsequently monitored as the plugs age.
Basic figures do not contain surprises. Simple one-electrodes came out exactly: the differences only slightly crawled out of the measurement range. But the three-electrode EZ-T17DVRM, the thin-electrode Bosch Platinum WR7DPX, as well as the DENSO W20TT gave a noticeable improvement in both power and efficiency of the engine. Although, of course, an intentional 2-3% improvement will have a visible effect on the wallet only during long runs, when gas consumption is considered not in cans, but in barrels. But this is what we originally wanted to clarify.
The neighbors in the shop, of course, cursed us: with the roar of our stands, we got them badly. From seven in the morning until nine in the evening - three months, three stands ... However, it all comes to an end: the motors are stopped, the candles are unscrewed. The electrodes and insulators have turned black, covered with deposits, in some places traces of metal erosion are visible. But even the usual single-electrode kits, taken by us as a base, passed all the circles with honor. I didn't have to change a single candle during the race: here's a loaded test cycle on domestic gasoline. This means that the resource of at least 30 thousand km of run, declared now by almost all manufacturers of even the simplest candles, is not just a marketing ploy.
And how much did the performance parameters deteriorate as a result? Let's see ... For this, we put beaten kits into the control motor - the same one on which the initial cycle of comparative tests was carried out - and repeated the measurements. The results obtained were compared with the initial data. Now you can easily compare the numbers.
Basic sets of spark plugs retained their functionality, but significantly reduced engine performance. Consumption increased by about 6%, CO and CH toxicity jumped by 8-10%. Why? Because under pressure, gaps in sparking began to appear, and these are gaps in flashes! And the motor controller, having caught the excess oxygen in the exhaust pipe, enriched the mixture. Hence the unnecessary expense and high toxicity. The decrease in parameters for Brisk A-line was less than for the base candles, but also noticeable.
The supposed leader of the test - "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 candles on gasoline with metal-containing additives ( ZR, 2007, No. 1 ). The explanation is simple: the spark of a thin-electrode candle with a conventional central electrode extended from the insulator, as it were, licks its tip, clearing it of carbon deposits and deposits. But the Bosch Platinum candle is deprived of this advantage: as a result, the kit yielded the palm to the domestic three-electrodes EZ-T17DVRM and the Japanese DENSO W20TT. These kits gave a deterioration in performance in all parameters, but it only slightly got out of the measurement error. So for them 30 thousand km is just the prime of life! Unless, of course, on the way there is a gas station with a particularly nasty gasoline that can kill anything.
And one more thing: as usual, we conducted a test cycle, which we call an emergency. The standard generator is disconnected from the motor, an "empty" battery is installed, and the on-board network is powered from a laboratory power source. This allows you to track the reaction of the candles to a decrease in voltage in the on-board network. This is where the differences between the kits - both new and used ones - were most clearly revealed. Once again, the leading products, declared as particularly long-lasting, are DENSO W20TT, Bosch Platinum and our multi-electrodes. And how the candles looked after testing, show the photo. The participants in the "run" are listed alphabetically.
In conclusion, a little bit of arithmetic. For 30 thousand km, an 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 amount to a couple of thousand re. Find out the usefulness of a real increase in power and lower emissions.
DETAILS
A German kit with a thin platinum center electrode was within our price range Bosch Platinum WR7DPX:
However, the ingenious design with a recessed electrode showed itself 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, in design, these candles do not differ much from ordinary single-electrodes, only the tip of the side electrode is "sharpened" on a sharp edge. And this helped them perform better than the base candles.
Japanese candles DENSO W20TT:
Here, on the side electrode made of a special chromium-nickel alloy, a protrusion is pressed to form a zone of increased spark discharge intensity. As a result, these "Japanese women" outplayed everyone.
European WEEN 370 - the simplest single electrodes:
The test as a whole passed the test, although the final increase in consumption by almost 6% suggests that they practically retreated.
Japanese NGK BPR6ES-11 - single electrodes are more expensive than European ones:
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The results are about the same: they did not give up, but judging by the deterioration of the parameters, they still have to live ...
Set of three-electrode spark plugs EZ-T17DVRM originally from Engels promised an increased resource:
Well, by the end of the run, the multi-electrodes really looked better than their "one-headed" counterparts.
WHY CANDLES AGE
What happens to candles as they work? Why are their metrics changing?
There are several factors. The most important is the erosion of the metal of the electrodes under the influence of 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 termination in some operating modes, in which the conditions for sparking and initial ignition of the mixture in the cylinder are difficult. This is idle, maximum loads, cold start.
In addition, as you work in the cylinder, the surfaces of the insulator and the electrodes are covered with a layer of carbon - under certain conditions, conductive. In its extreme state, it can form the so-called soot bridges, shunting the spark plug group.
Under the influence of high temperatures, the destruction of the protective coating of the insulator of the candle (glaze) is likely - the ceramics begins to become saturated with particles of deposits. The resistance of the candlestick to the breakout decreases.
Finally, thermomechanical cyclic stresses in the insulator can also lead to its destruction.
QUESTION ANSWER
- What do the terms "dry" and "raw toxicity" mean?
These are engineer's slang terms. The raw toxicity is that immediately after the engine, before the neutralizer. Dry - after the neutralizer: what goes to the release.
- Why do we need different candles if the neutralizer still burns out the unburned mixture?
It burns out far from everything (for CH and NOx - about 30-50%). Therefore, the more raw toxicity that candles affect, the more and dry. 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 ineffectively. And the neutralizer does not affect the power, start-up and fuel consumption at all.
- The modern controller reacts to skipped flashes by lighting up the Check Engine. And how does the neutralizer respond to this?
The neutralizer does not react to skipped flashes in any way. At least you cannot see it by diagnostics. If the process is too running, then we will get a decrease in its service life and, possibly, early failure. The residual oxygen sensor reacts to gaps: it catches excess oxygen that was not used in the cylinder and gives a signal to enrich the mixture.
Tables are opened in full size by mouse click:
DENSO TT Spark Plugs manufactured using the patented "Super Ignition (SIP)" technology. They provide longer life, reliable starting in all weather conditions, lower emissions and better fuel efficiency. The versatility of this type of spark plug allows you to cover a significant fleet of modern vehicles with a limited number of articles.
In 2010, the serial production of Nickel TT spark plugs began, which is based on innovative technology, which 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 a double task: 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 plugs. This allows DENSO Nickel TT spark plugs to spark more consistently and more effectively and ignite the air / fuel mixture more efficiently.
Nickel TT plugs outperform standard nickel plugs in ignition performance and provide greater fuel efficiency. This is achieved by completely burning the mixture in the cylinder, which increases the efficiency of the engine and prolongs its resource.
Specifications:
Features of Denso Nickel TT candles
- Fuel efficiency. Exceptional flammability ensures better combustion of the mixture, even with leaner mixtures, which reduces the number of misfires compared to standard nickel plugs.
- Reduced emissions. Stable spark formation and rapid 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 line includes a limited list of SKUs, which will nevertheless serve the vast majority of the most popular vehicles.
- Designed specifically for starting the engine at low temperatures. Less electrical voltage is required to form a spark due to lower heat losses on thin electrodes. This reduces stress on the ignition coil and on the electrical system of the engine as a whole, providing faster, more powerful starts even in cold weather conditions.
(SZ) are an integral part of the ignition system of any car. Accordingly, if you want them to be able to serve 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 carried out for the car.
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Features of SZ
So, if you decide to purchase Denso ik20, k20tt, w20tt, k16tt, then before making 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 patented the TwinType technology used in the TT line with a nickel center electrode with a reduced diameter of 1.5 mm. In addition, the size of the side 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 heat numbers have, in contrast to fakes:
- SZ models ik20, k20tt, w20tt, k16tt and others with improved spark generation actually achieve the maximum efficiency of iridium plugs. However, the production of such SZ takes less money, since they do not use precious materials.
- According to the manufacturer, SZ models ik20, k20tt, w20tt, k16tt and others are characterized by improved performance at significantly lower costs.
- 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.
- As a result, the models ik20, k20tt, w20tt, k16tt and others have a refined central electrode with a diameter of 1.5 mm (the standard one has 2.5 mm). Accordingly, the resulting spark comes out more powerful, its efficiency is higher. And this, you see, is very important, especially at low temperatures.
Range
Denso's assortment 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 figures and consumer reviews.
Advantages that will allow you to select:
- Reducing emissions into the atmosphere. As a result of the improved sparking in the 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 allows you to reduce fuel consumption, as well as reduce the level of CO and CH emissions into the atmosphere.
- Thanks to the improved sparking of CZ with a good glow number, the ignition index is improved. As a result, ik20, k20tt, w20tt, k16tt and others candles from the Denso brand allow you to light even the most lean combustible mixtures. Accordingly, misfires in the system will occur much less frequently when compared with other SZ or fakes.
- If you choose originals with an excellent heat rating, instead of a fake or standard SZ, then during normal operation of the sludge unit, you can save five percent of fuel consumption - gasoline, diesel or natural gas.
- If your car runs on natural gas, then the Tough iridium spark plugs with a high glow number are suitable for you. These 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 running on gas is higher. Accordingly, if the engine runs on gas, then the fuel mixture will burn at elevated temperatures.
- Self-cleaning capability. The use of modern technologies allows the candles to self-clean during long-term operation, so that the problem of carbon deposits is no longer scary (video author - Hands in Oil).
Disadvantages:
- A huge number of fakes. In fakes, the glow number is different 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 the Denso product.
- If the product itself is not original, its service life will be lower. However, car owners of cars running on diesel and gas, in their reviews, periodically write that the service life of the originals is less than stated.
- High price. But in most cases this is due to the high quality.
- On some new SZ, the gap was not initially set for the working one. 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 designations, which are given in the table below:
Denso spark plug marking and designation How to distinguish an 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 for checking the appearance as well as the internal structure of the device.
A visual aid - how Denso originals differ from a fake Of course, upon purchase, you will perform a visual inspection:
- On fakes, the spark plug pin has a glossy surface, while on the originals it is more matte.
- Unlike the originals, the printed text of the Denso brand on fakes can be scraped off without problems. It is very difficult to erase this text on the original.
- As for the case itself, it is made of a lower quality on fakes, in particular, we are talking about a low level of surface treatment.
- The quality of threading, as well as the electrode itself in fake SZ, is lower, this is visible with the naked eye.
- When using a fake, you will notice how on the climbs, as well as at high speeds, the power of the power unit begins to decrease.
- Fuel consumption can be increased and should be monitored.
- Over time, the side electrode SZ will begin to melt; periodic diagnostics will help to understand this.
