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Can replacing a spark plug really improve power?


Today's consumers, especially young people, like to make some changes after buying a car. In addition to decorative appearances, they also like to use some simple methods to improve the power of cars at a low price, but not all methods are necessarily effective. Many products will unilaterally exaggerate their functions and numb consumer nerves. Therefore, today I have decided to take everyone to "rational consumption".

Spark plugs are only responsible for ignition. Therefore, no matter how good it is to replace the spark plug, it cannot increase the power of the car.

Just like: I want to buy a computer for the office, as long as it can use Word and Excel. No matter how high the configuration or how expensive the computer is, it doesn't mean much to me.

Replacing with a better spark plug will not increase power

The main function of a spark plug is to ignite the mixed gas in the cylinder. It doesn't matter whether the power supply is strong when the car is working properly.

There is a paper in the Journal of Construction Machinery, which is mentioned in the Measurement of Spark Plug Ignition Energy.

In order for the engine to operate normally, the spark energy generated by the spark plug must be large enough to allow the spark core formed by the spark in the combustible mixture to complete physical and chemical processes and expand the flame.

In other words, if you look around and light a cigarette on the gas stove, or light a cigarette, it is not related to the source of the fire.

Whether a cigarette smokes or not depends on the tobacco leaves or other flavors of the cigarette, regardless of the match.

The power of a vehicle is determined by four main factors: intake volume, speed, mechanical efficiency, and combustion process.

In other words, the power of the car is already determined at the factory. As long as no changes are made and spark plugs are replaced, it is impossible to exceed the original power level.

Good spark plugs can last longer

So why do people replace spark plugs?

We replaced the spark plug with a better one, but in reality, we only replaced the spark plug with a better electrode material. The difference is that the service life will be longer.

For example, the service life of nickel alloy spark plugs is approximately 20000 to 30000 kilometers. A single platinum spark plug is 40000 kilometers long; Iridium spark plugs are 80000 kilometers long.

The cars that truly require high-quality spark plugs are those with so-called "poor" engine conditions.

Some turbocharged cars need to replace spark plugs for 20000 kilometers. The reason is that the spark plugs on turbocharged cars corrode faster than naturally aspirated spark plugs. For example, in the Passat maintenance manual, it is recommended to replace spark plugs every 20000 kilometers.

As mentioned in the previous video, the temperature of a turbocharged engine is higher, with an intake temperature 40 to 60 ° C higher than that of a normal naturally aspirated engine.

There is also a paper in the Journal of Automotive Engineering titled "Research on the Effect of High Energy Ignition on Spark Plug Electrode Corrosion".

Higher cylinder pressure, stronger eddy currents, and higher cylinder temperature will accelerate the corrosion of spark plugs, thereby shortening their lifespan.

Just like this: People who work hard will definitely consume more physical energy. They should eat more buns to supplement their nutrition.

If the nutrition is worse than others and they work more than others, right? It's over.

Why do some people feel that the motivation after the change is becoming stronger and stronger

Some of his friends felt, "I just replaced the spark plug with a better one, and then I felt the power became stronger." So what happened?

Although it does not increase power, it can restore power

That's how it goes: you replaced this new spark plug, which is not called "getting stronger", but rather restoring you to your original level.

I feel like your power is getting stronger, but you have forgotten that the original spark plug is getting bigger. Reputation is not a "stronger" spark plug, but a "new" spark plug.

Old spark plugs have more or less carbon deposits, and carbon accumulation problems can indeed affect engine power.

There is a paper in "Chemical Mineral Resources and Processing", which is mentioned in "Introduction to Spark Plugs".

Excessive mixture of gases, prolonged engine idling, high heat generation, and excessive lubricating oil can easily cause carbon deposits on spark plug insulators, leading to reduced ignition performance and power.

In addition, after the spark plug ages, the electrodes will wear and corrode, the gap will increase, and the ignition performance will also deteriorate.

There is some knowledge about spark plugs on the official DENSO website. When the electrode gap increases, the voltage required for spark plug ignition will increase.

When the electrode wear reaches a certain level, the voltage provided by the ignition coil is insufficient, and insufficient voltage can cause the spark plug to fail.

The stable ignition of the mixture is hindered and the engine power decreases.

Just like: when climbing a mountain, if the slope is too steep, we can only climb slowly, or we can't climb at all, except for climbing.

Psychological influence makes you motivated

Some friends haven't used the original spark plugs for a long time. They replaced them with better spark plugs. They felt an increase in the power of "um". This may be a psychological impact.

Because in behavioral economics, there is something called the "Weberian effect". That is to say, the higher the price of the product, the more willing consumers are to purchase, believing that the product will have better effects.

In other words, spark plugs are expensive. I thought to myself: the effect will be better, the power will be better, and the fuel consumption will definitely be lower. I think ignition seems to be smoother than before.

Actually, these changes are very small.

The most basic function is to extend the service life

In summary, the fundamental purpose of replacing with a better spark plug is to extend its service life, regardless of increasing power.

But I replaced it with a new spark plug, and because the original one was old, I felt that the power had increased. In fact, it is called "resilience".

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