The trouble light of Jiefangwei 430 horsepower engine is on. What's the matter with the increase in the number of revolutions when stepping on the brake accelerator?

The reason for the increase of braking speed may be that the ignition coil fails, resulting in insufficient ignition energy;

The throttle valve is not clean, resulting in abnormal mixture; The vacuum booster system leaks air, resulting in insufficient vacuum in the system; The gearbox or engine electronic control system fails, resulting in unstable operation during braking.

The engine speed is related to the number of times of work done per unit time or the effective power of the engine, that is, the effective power of the engine changes with the speed. Therefore, when explaining the effective power of the engine, it is necessary to indicate its corresponding speed at the same time. The effective power specified on the nameplate of the engine product and its corresponding rotational speed are called calibrated power and calibrated rotational speed respectively. The working condition of the engine at rated power and rated speed is called rated working condition. Rated power is not the maximum power that the engine can emit, but the maximum use limit of effective power based on the purpose of the engine. The rated power value of the same type of engine is different for different purposes. Effective torque also varies with engine operating conditions. Therefore, the automobile engine takes the maximum torque it can output and its corresponding speed as the index to evaluate the engine power performance. The higher the engine speed, the more work is done per unit time, so the greater the power, but the higher the engine speed, the faster the whole cycle speed, and the fuel is discharged without enough time to burn completely. So the fuel consumption will increase several times. So the higher the speed, the better. Speed mainly depends on speed and gear. It is enough to maintain it at about 3000 rpm, and it is also necessary to avoid low gear, high gear and low speed, which are harmful to the engine.