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LEARN ABOUT SPARK PLUGS (P.1)
What are drying spark plugs?
Drying spark plugs are used for DIESEL engines, spark plugs help start the car preferably in cold weather conditions.
Diesel engines work by compressing the fuel mixture under such great pressure that it spontaneously ignites. By not using sparks, diesel engines need a large compression ratio to push the temperature up. This ratio sometimes reaches 20:1 while in an average gasoline engine it only needs 9.5:1.
When it is cold, especially in the North in winter, diesel engines will be more difficult to explode than usual due to the following reasons:
- The area of the combustion chamber is large, giving off a lot of heat, so the temperature of the air at the end of the compression period is significantly lost
- Low compression ratio to unified combustion chamber
- Low spray oil pressure
Common types of drying spark plugs
– The first form is the most common drying spark plug, arranged separately for each cylinder.
– The second form is the intake air drying form, arranged in the fuel path.
For the first form, the drying system works to support the start of the engine using spark plugs. As for the second form - the one that uses a pre-intake air dryer - after the engine has exploded, this part remains active for a certain period of time (the engine temperature reaches the required level) to ensure that the engine does not stall.
How to choose the right spark plugs?
Users need to consider the following basic specifications when choosing drying spark plugs:
– Engine type: Spark plugs used for turbo engines will be different from those used for non-turbo engines and according to the manufacturer's recommendation is not to use these 2 types together. The distinction is that the type used for turbo engines usually has a "P" on the parameter range.
– Voltage type: There are 2 main types of voltage, one using 12V voltage, this type is usually used for residential cars. One uses a 24V voltage for trucks. Besides, there are some types that use 5.6V or 9V for ultra-fast drying to make the car easier to start.
– Size: Just like ignition spark plugs, drying spark plugs also have different sizes depending on the type of engine and each manufacturer.
– Hot spark plugs, cold spark plugs: Each type of engine uses drying spark plugs with suitable capacity to heat the combustion chamber and is heat resistant when operating at the highest power mode. Therefore, if you use it incorrectly, it will not bring efficiency and also reduce the life of spark plugs.
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A sample of NGK's spark plug drying products.
Other
On July 03, select member from Niterra’s Asian organizations visited the Niterra Place at the Osaka-Kansai Expo’s “Future Society Showcase” pavilion. Among them was Mr. Tran Thanh Kha, General Manager of Niterra Vietnam, who passionately spoke about his self-published book, “KEN – Will Tomorrow Be Life of Death?” (Interviewer: Corporate Communications Department).
As part of the event, Niterra Vietnam, in collaboration with distributor Quoc Trung, participated as a sponsor and brought practical gifts for the students.
With a spirit of sharing and a strong sense of community responsibility, Niterra Vietnam presented dozens of meaningful gifts to help encourage the students in their learning journey.
On May 30, 2025, in Vinh City, Nghe An Province, Niterra Vietnam successfully organized the Technical Seminar & Customer Appreciation Event in collaboration with Mitsuboshi Belt and distributor Quoc Trung. The event gathered nearly 200 guests, creating a vibrant and energetic atmosphere.
Mini Car Racing 2025 has officially come to a close, leaving a strong impression not only for its excitement and creativity, but also as a testament to the efforts in promoting new technology training and connecting modern engineering with real-life applications.
The highlight of the event was the open Q&A session, where students had the opportunity to directly express their concerns, aspirations, and engage in practical discussions with the speaker about career paths, dreams, and future orientations.
Recently, on November 13, 2022, NGK Spark Plugs Vietnam chose Viet Tiep Motor, 337 To Hien Thanh, Ward 12, District 10, Ho Chi Minh City as the place to implement this activity. Supporting Viet Tiep store is NGK's staff. As long as the car owners bring their car to the shop, Viet Tiep's experts and NGK staff will bring the car in, remove the spark plugs to check the spark plug condition, advise the car owner on the spot whether the spark plug is right or not. or not, explain the reason scientifically and clearly to the guest.
Nearly 200 guests came to this event. Everyone had unforgettable moments of meeting, exchanging and bonding. Closing the program was a "dance", although it was outside the script, but it was extremely enjoyable by all representatives of the two companies NGK-IRC, general agents and all guests.
For the first time, two leading Japanese motorcycle parts manufacturers, NGK Spark Plugs and IRC Tires, jointly held a Technical Workshop and Customer Gratitude event in Kien Giang province. The event took place on November 4, 2022 at a large hotel located in the center of Rach Gia City.
On 19th October, 2022; as a guest, representatives of NGK Spark Plugs (Vietnam) attended the Opening Ceremony of the 2022-2023 school year of Ho Chi Minh City University of Industry (IUH), at Military Zone 7 Stadium - Ho Chi Minh City.