What is the Principle of Electronic Throttle Control?
2 Answers
Electronic throttle control principle is: The electronic throttle changes the throttle opening according to the driver's pedal pressure through voltage variation. Vehicles equipped with electronic throttles can more precisely control fuel consumption. The upper part of the throttle is connected to the air filter, while the lower part connects to the engine block, serving as the throat of the automobile engine. The electronic throttle is a crucial control component of the car engine, consisting of the engine, speed sensor, throttle, etc. Electronic throttles enable precise control of throttle opening, which not only improves fuel economy and reduces emissions but also delivers satisfactory handling performance. Additionally, it allows for the integration of idle speed control, cruise control, and vehicle stability control, simplifying the control system structure.
The principle of electronic throttle control, simply put, is that when I press the accelerator pedal, sensors on it detect how deep I press and send the signal to the car's computer system, which acts like a brain processing various information such as engine speed, vehicle speed, temperature, and the car's condition. The computer calculates how much the throttle should open based on this data and then sends a signal to a small motor on the throttle body to rotate, precisely adjusting the air intake to control the engine's power output. This not only makes acceleration smoother without any jerking but also saves fuel and reduces emissions. I feel it most noticeably during high-speed driving—quick starts without excessive fuel consumption, while the computer also monitors for errors and automatically enters a protection mode to prevent issues. Overall, it's much smarter than the old mechanical throttle systems.
