What are the differences between traditional throttles and electronic throttles?

Four kinds. There are four types of electronic throttles: electro-hydraulic, linear solenoid, stepper motor and DC servo motor. However, the electrohydraulic and stepper motor types are rarely used in cars due to low control accuracy, while the linear electromagnetic type is rarely used in cars due to high power consumption. The DC servo motor type can overcome the above two situations very well, so it is widely used in automobiles. In addition, the throttle also needs to be replaced regularly. The length of time mainly depends on factors such as the quality of the air filter, the quality of the engine oil, and the road conditions of the vehicle.