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A Brief Introduction to the Working Principle of Electronic Accelerator

A Brief Introduction to the Working Principle of Electronic Accelerator

The accelerator is a very simple device, which is installed between the accelerator pedal sensor and the control module. It can intercept and change the output signal of accelerator pedal. When the accelerator pedal is depressed, the accelerator will calculate the change rate of the accelerator signal according to the amplitude and time of the pedal. The faster the change, the stronger the acceleration requirements are, the accelerator will increase the change rate, and the final effect is better dynamic response of acceleration.

Principle of action of electronic accelerator

The electronic accelerator is mainly used to improve the response speed of the electronic throttle controller, improve the starting speed of the vehicle, improve the sensitivity of the vehicle throttle, reduce the carbon deposition of the engine and make the fuel fully burn.

Electronic throttle control system and ECU features

In the model of electronic throttle control system, when ECU controls the electronic throttle, it will analyze the depth of the throttle and the vehicle condition, and finally calculate the appropriate throttle opening. When the driver starts to accelerate abruptly (press the pedal to the bottom), the ECU will analyze according to the current speed, throttle size, etc. from the perspective of fuel economy and reasonable emissions, it will appropriately limit the throttle opening range, and control the fuel injection system to limit the maximum fuel injection of the fuel injection nozzle. In this way, the driver feels that there is obviously a delay when the accelerator is depressed before the car starts to work. This is called the accelerator hysteresis. Therefore, the throttle hysteresis is actually the performance of ECU by limiting the instantaneous output of engine, which will make the car more environmentally friendly and energy-saving.

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