What is the principle of the idle valve?
1 Answers
When the engine coolant temperature is low, the idle control valve opens to achieve an appropriate idle speed. The engine computer controls the position of the idle control valve plunger by varying the signal intensity transmitted to the idle control valve, based on different coolant temperatures. Below is an introduction to the idle valve: 1. Location of the idle valve: The standard English name is (Auxiliary Air Regulator). The idle control valve is installed on the throttle bypass air passage. 2. Structural principle of the idle valve: It consists of a rotor made of permanent magnets, a stator composed of excitation coils, a feed screw that converts rotary motion into linear motion, and a valve, among other components. It utilizes the step signal provided by the system for conversion control, allowing the rotor to rotate either forward or reverse, thereby enabling the valve core to extend or retract. This adjusts the cross-sectional area of the bypass air passage to stabilize the idle speed and achieve the desired idle RPM.