GF09.20-P-6002AMG Component Description For the Variable Intake Manifold

GF09.20-P-6002AMG Component Description For The Variable Intake Manifold







The variable intake manifold is located in the middle between the cylinder heads.

Task
Switching between long and short intake routes can occur with the variable intake manifold. The vibration response of the intake air for different operating conditions is used in a specific way to achieve internal charging.

The variable intake pipe lengths also allows better distribution of the mixture which leads to better combustion and thus to a higher engine torque.











The variable intake manifold consists of a number of magnesium pressure castings. When fitted together, they produce the individual intake manifolds and the air collecting volume. The parts are sealed off to each other by plastic.

The variable intake manifold must not be disassembled down to the housing bottom section and the throttle valve actuator.







Short intake routes improve the engine torque at low rotational speeds and low loads. Short intake routes also achievement of high motor speeds.

The variable intake manifold switchover valve is de-energized and the aneroid capsule is ventilated. The switch flaps are or will be opened through the spring force of the vacuum unit via the gearshift linkage and releases the short intake routes.

The switch flap shafts of the right and left cylinder head are connected at the rear in the variable intake manifold via a further gearshift linkage.







Long intake routes improve the engine torque at low rotational speeds and high loads.

The variable intake manifold switchover valve is actuated at the ground end from the ME-SFI [ME] control unit (N3/10) and switches off the vacuum from the vacuum reservoir through to the vacuum unit. The aneroid capsule actuates the gearshift linkage of the switch flap shafts and the switch flaps close the short intake routes.