How many kilometers does Land Rover look for spark plugs to replace (how often does Land Rover look for spark plugs to replace)?

It was found that the spark plugs of Shen Xing cars should be replaced every 40,000 kilometers. If it is not replaced for a long time, the engine power will decrease and the fuel consumption will increase. Check the spark plug every 40,000 kilometers and replace it every 80,000 kilometers.

Spark plug is an important part of the ignition system of gasoline engine. It can introduce high-voltage electricity into the combustion chamber to make it jump over the gap between electrodes to generate sparks, thus igniting the combustible mixture in the cylinder.

It mainly consists of a connecting nut, an insulator, a connecting screw, a center electrode, a side electrode and a shell, wherein the side electrode is welded on the shell. Under the action of high voltage, the gas between the center electrode and the side electrode of the air spark plug will ionize rapidly, forming positively charged ions and negatively charged free electrons. When the voltage between the electrodes reaches a certain value.

The number of ions and electrons in the gas increases like an avalanche, which makes the air lose insulation, and the gap forms a discharge channel, leading to breakdown. At this time, the gas forms a luminous body, that is, a spark. It will also crack due to thermal expansion. The temperature of this electric spark can be as high as 2000 ~ 3000℃, which is enough to ignite the mixed gas in the combustion chamber of the cylinder.