"Denso", spark plugs: specifications, tests and reviews

2024 Author: Erin Ralphs | [email protected]. Last modified: 2024-02-19 11:42

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

Engineering company "Denso" 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.

Denso products

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 certified to ISO 9000 and QS 9000.

Assortment

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:

• Standart.
• Platinum (Double Platinum).
• Iridium Power.
• Iridium Tough.
• Iridium Racing.
• TwinTip.
• SIP.

Standard Candles

The most popular Denso products are spark plugs, positioned as standard. They are ideal for all-weather use in any gasoline engine, therefore they are considered universal.

Using expertly developed U-groove technology, standard type spark plugs reduce fuel consumption by up to 5%. This ensures its effective ignition, and also reduces the amount of harmful impurities in the exhaust gases.

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 medium-class car owners. They are reliable, serve for a long time, and cost a little more than their domestic counterparts.

Platinum

Denso's unique product is Platinum series spark plugs, which have a very long service life. Today, many of the manufacturers use the technology of coating the central and ground electrodes with a layer of platinum, but for the first time it was used 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 platinum candles 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 Japaneseautomakers producing premium cars.

Iridium Power

Iridium is a platinum group metal element with high density and excellent corrosion resistance even at temperatures exceeding 2000 0C. In terms of its properties, it is very close to platinum, 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 in terms of reliability or resource.

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

• Today's thinnest center electrode (0.4 mm), eliminating misfires;
• a powerful spark that allows the engine to instantly respond to acceleration;
• long service life.

Iridium Tough

Denso Iridium Tough spark plugs are the most successful symbiosis of the two technologies described above by the company. 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. Test results of Iridium Tough plugs showed that this technology allows:

• reduce fuel consumption by 5-7%;
• increase the power of the power unit;
• reduce emissions.

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 rally cars. 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 ground electrodes provide the most stable and powerful spark.

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

TwinTip

Denso TT spark plugs (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 all gasoline engines and powertrains running on gas);
• huge range of models for 80% of all European cars;
• stable ignition, powerful spark, so that fuel consumption can be reduced 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 manufacturers of medium-sized 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;
• reducing fuel consumption by up to 5%;
• increasing the power of the power unit up to 4%;
• large resource (100 thousand km);
• a huge range of modifications.

"Denso": spark plugs. Selection of the most suitable model

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

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

If you own a petrolmiddle-class 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. But if you drive a sports car, and even participate in races, buy Iridium Racing without much thought.

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.