An exhaust gas recirculation (EGR) valve consists of a solenoid valve, a sealing cap, inlet and outlet valves, and a spring. The specific structure is as follows:
1. Solenoid Valve: A crucial component controlling the valve's opening and closing. Current flowing through it generates a magnetic force, controlling the valve's operation.
2. Sealing Cap: Used to seal the air-fuel mixture, isolating exhaust gas from intake air.
3. Inlet and Outlet Valve: Exhaust gas enters the valve through the inlet and then enters the engine combustion chamber through the outlet.
4. Spring: Provides elastic support when the valve is closed.
