Speed-sensitive power steering (SPS), function (Version B) - GF46.50-P-0001CW
MODEL 204.0/2 with CODE (213) Speed-sensitive power steering up to Model Year 8
Shown on model 204.008
The steering wheel's rotary motion is converted into horizontal movement through the steering gear rack-and-pinion steering. The rack-and-pinion steering gear has a constant gear ratio, i.e. the tooth pitch is identical across the entire toothed rack. Steering assistance is executed hydraulically by a belt driven power steering pump.
To cool the power steering fluid an oil cooler in the form of a coiled pipe is installed immediately upstream of the A/C system's condenser. The oil cooler version depends on the engine mounted in each particular vehicle.
The steering assistance is regulated by the rack-and-pinion steering gear itself. The manual effort required to turn the steering wheel is increased from vehicle standstill up to a speed of v = 100 km/h in accordance with a given characteristic.
The hydraulic reaction assembly is adapted to match requirements via the speed-sensitive power steering solenoid valve. The electronic control is provided by the Electronic Stability Program control unit (N30/4).
| Rack-and-pinion steering, function when driving straight-ahead | GF46.25-P-3100CW |
| Speed-sensitive power steering, steering angle, function | GF46.50-P-2300CW |
| SPS electrically controlled centering, function | GF46.50-P-2400CW |