SPS Solenoid Valve

NOTE: For model name/model number cross reference refer to Model Designation Table. Application and ID

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Location
Model 140: On steering gear housing.
Model 210: On rotary valve housing of steering gear

Task
Regulates the steering wheel torque in the speed range of:
0-80 km/h on model 140
0-100 km/h on model 210.

Design
Current-controlled proportional valve.

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Function
The P-valve is actuated in cycles with approx. 6V by the ETS, ASR or ESP control module (N47-1, N47-2, N47-5). As vehicle speed increases the current flow reduces and the P-valve opens the control restrictor continuously in accordance with a characteristic (K) defined in the control module. Consequently the oil flow is controlled and also the steering wheel torque.

If the valve is fully energized, (v = 0 km/h), the control restrictor is closed. Consequently there is no oil f low and the lowest steering wheel torque is adjusted (parking situation).