Traditional Culture Encyclopedia - The 24 Solar Terms - Advantages of electronic throttle
Advantages of electronic throttle
1, there will be throttle lag in auto start: rich mixture is needed for automatic starting. At present, most manufacturers use electronic throttle to alleviate the throttle lag, but this device can not improve the engine performance and change the power output and torque. It is just a signal amplifier, and the fuel consumption will increase with the acceleration of the throttle. 2. Nonlinear effects: There are various nonlinear effects in the electronic throttle control system. In addition to the influence of spring nonlinearity, stick-slip friction and backlash nonlinearity, it is also affected by the nonlinear damping force generated by intake air flow and the unstable turbulent resistance moment of intake air flow, which leads to the failure of conventional PID control to accurately set the feedback gain and affect the control accuracy. 3. High cost: ETC system adopts intelligent sensor, quick response actuator, high performance control unit and redundant design, which greatly increases the cost. At present, ETC system is only assembled on high-end cars.
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