What are the symptoms of intake and exhaust solenoid valve failure?
1 Answers
The symptoms of a faulty intake and exhaust solenoid valve include insufficient engine power during operation, severe loss of horsepower, inability to accelerate the vehicle, increased fuel consumption, black smoke emission, severe vehicle shaking, loud driving noise, and the engine warning light remaining illuminated. Below is relevant information: 1. Function of the automotive solenoid valve: The automotive solenoid valve is an actuator in the electronic control system, primarily serving as a switching device. It uses the electromagnetic force generated by electric current flowing through a coil to attract the valve core (overcoming spring or self-gravity force) and is categorized into normally open and normally closed types. The solenoid valve is essentially an electronically controlled exhaust brake valve. The exhaust brake valve is installed between the exhaust pipe and the muffler, and trucks use this valve to control the shutdown of internal combustion engines. 2. Working principle of the automotive solenoid valve: The solenoid valve contains a sealed chamber with openings at different positions, each leading to different oil pipes. The valve is located in the middle of the chamber, with electromagnets on both sides. The valve body is attracted to the side where the electromagnet coil is energized, controlling the movement of the valve body to block or expose different oil discharge holes. The oil inlet hole is normally open, allowing hydraulic oil to enter different discharge pipes, which then uses oil pressure to push the piston, which in turn drives the piston rod, and the piston rod moves the mechanical device.
