300SL (129.061) L6-3.0L (104.981) (1991)
Fig. 48 Electro-Hydraulic Actuator Rich Condition
When the current supplied to the electro-hydraulic actuator is increased, the plate valve deflects to the left and restricts the flow of fuel to the lower
chamber causing the pressure regulating valves to deflect downward. The result is increased fuel flow to the injectors and a richer air/fuel ratio.
Fig. 49 Electro-Hydraulic Actuator Lean Condition
When the current supplied to the electro-hydraulic actuator is reduced, the plate valve moves to the right and allows more fuel into the lower chamber.
The pressure in the lower chamber increases and deflects the pressure regulating valves upward. The quantity of fuel to the injectors is consequently
reduced resulting in a leaner air/fuel mixture.