Component description for the purge control valve - GF47.30-P-2020AMG

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MODEL 164, 251 with ENGINE 156.980

MODEL 209 with ENGINE 156.982

MODEL 211, 219 with ENGINE 156.983

MODEL 216, 221 with ENGINE 156.984

Location for model 164, 251

The purge control valve is located in the engine compartment in front of the left wheelhouse.

Fig 1: Identifying Purge Control Valve - Location For Model 164, 251

G04958797

Courtesy of MERCEDES-BENZ OF NORTH AMERICA.

Location on model 209

The purge control valve is located in the engine compartment above on the left wheelhouse.

Fig 2: Identifying Fluid Reservoir And Purge Control Valve - Location On Model 209

G04958798

Courtesy of MERCEDES-BENZ OF NORTH AMERICA.

Location for model 211, 219

The purge control valve is located in the engine compartment in front of the left wheelhouse.

Fig 3: Identifying Fluid Reservoir And Purge Control Valve - Location On Model 211, 219

G04958799

Courtesy of MERCEDES-BENZ OF NORTH AMERICA.

Location for model 216, 221

The purge control valve is located in the engine compartment in front of the left wheelhouse.

Fig 4: Identifying Purge Control Valve - Location For Model 216, 221

G04958800

Courtesy of MERCEDES-BENZ OF NORTH AMERICA.

Task

When regeneration is enabled, the purge control valve opens the purge line between the activated charcoal canister and the intake manifold. In this way, it is possible to suction off the fuel vapors from the activated charcoal canister.

Function

Fig 5: Identifying Purge Control Valve With Connection

G04958801

Courtesy of MERCEDES-BENZ OF NORTH AMERICA.

The purge control valve is actuated by the ME-SFI [ME] control unit (N3/10) by means of a PWM signal (pulse width modulated signal) according to the operating conditions of the engine.

At the same time, the passage of the purge line from the activated charcoal canister to the intake manifold (a →b) is opened.

The purge control valve is always closed in the idle state (de-energized).

The voltage is supplied through "terminal 87 M".

In order to suppress pulsation noises a fluid reservoir is located the purge line upstream of the purge control valve.