Where is the valve of Mercedes-Benz 272 engine?

The throttle valve of an automobile is usually located at the engine intake, behind the engine air filter element and in front of the intake manifold.

The function of the valve is specially responsible for inputting air into the engine and discharging exhaust gas after combustion. From the engine structure, it can be divided into intake valve and exhaust valve. The function of the intake valve is to draw air into the engine and mix it with fuel for combustion; The function of the exhaust valve is to exhaust the exhaust gas after combustion and dissipate heat.