5.1.2. System overview
The EPS enables average fuel consumption to be reduced by approx. 0.3 I/100 km (0.317 quart/62miles) compared to a conventional hydraulic steering system. This contributes to a reduction of CO2 emissions.
| Index | Explanation |
|---|---|
| 1 | Speed reducer |
| 2 | Steering-torque sensor |
| 3 | Track rod |
| 4 | EPS control unit |
| 5 | Electric motor with motor position sensor |
The EPS steering replaces the conventional hydraulic steering system. EPS is always equipped with the Servotronic function. Using the drive dynamic control switch, two different adjustments can be achieved: "Normal" and "Sporty".
The EPS is less sensitive to disturbance variables such as bumps and steering wheel vibration. It also contributes to the driving safety of the F10 with an active roll damping.
Because there is no oil in the EPS, it is more environmentally friendly than conventional hydraulic steering systems.
The EPS has Active return to center, this delivers optimum driveability. The EPS also makes it possible for the parking assistance to be implemented for the first time in a BMW vehicle.