How many kinds of electronic throttle are there?

There are four types of electronic throttles: 1. Electro-hydraulic type 2. Linear electromagnet type 3. Stepper motor type 4. DC servo motor type. Among them, electro-hydraulic type and stepping motor type have low adjustment accuracy and are rarely used in automobiles. Linear electromagnetism is rarely used because of its high power consumption. The type of DC servo motor overcomes the above problems well and is widely used in automobiles. In addition, the throttle valve also needs to be replaced regularly, and the specific time depends on many factors, including air filter, oil quality and driving conditions.