When you step on the accelerator, it will make a sizzling current sound.

It is normal for a car to have a slight current sound when stepping on the accelerator. If the noise is too loud, you can go to the 4s shop for repair.

Nowadays, most cars use electron accelerators. It's normal to step on the accelerator with electric current.

The electronic throttle uses a wire harness instead of a cable or a pull rod. The other side of the throttle is equipped with a micro-generator, and the opening of the throttle is controlled by a motor.

The traditional throttle control technology of internal combustion engine lacks accuracy, and the appearance of electronic throttle solves this problem well.

The electronic accelerator is composed of pedal displacement sensor, electronic control unit, data bus, accelerator actuator, servo motor and accelerator pedal.

Electronic throttle control system has two main functions: traction control system and speed control system.

A, traction control system:

This should be familiar to everyone, that is, the ASR of the car. The ASR system will detect the tire speed, and the electronic control system will calculate the slip rate according to the position of the accelerator pedal, the difference between the wheel speed and the steering angle of the steering wheel, and then reduce the throttle opening to adjust the air intake and realize the deceleration of the vehicle.

Second, the speed control system:

Many vehicles are equipped with cruise control system, which needs the cooperation of electronic throttle.

The speed sensor of the car will transmit the speed to the ECU, and then the ECU will adjust the speed of the car through instructions.

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