Electrical assisted power steering

A2.5.3.2

Electromechanical power steering systems are increasingly replacing the hydraulic steering systems. On the one hand, they form the basis for central assistance functions. On the other hand energy-efficient systems must be used to reduce the electrical power consumption of a modern vehicle.

The main advantages of the electromechanical power steering system in contrast to the hydraulic steering system are:

Weight savings by eliminating the hydraulic system
Reduced noise
Improved control characteristics
Simplified installation
Simplified maintenance
Reduced energy consumption

The electromechanical power steering system generates when needed - and only then - high steering assist forces from the 12-V power supply. For this purpose, a permanent-magnet DC shunt motor is used, which is located directly on the steering column. As an input signal the steering torque sensor records the torque applied by the driver on the steering wheel. For this input value a driving situation-oriented steering power is generated taking other environment variables into account, too.

1	739 5021	Electric Power Steering (EPS)
1	739 503	** Load mechanical 1 kW
1	773 110	** Machine base bench, 90 cm
1	732 56 4	** Coupling, 1.0
2	579 163 8	PWM/PFM generator, STE 2/50
1	738 103	Ignition start switch
1	738 032	Battery connection with protection circuit
1	726 890 8	DC power supply unit 1...32 V/0...20 A
1	738 027 4	Digital power supply 1 - 16 V/40 A
2	688 131	* Mains cable Type G

***Measuring equipment***
1	524 013SKFZ	** Sensor-CASSY 2 Starter, Automotive
1	524 0431 4	** 30-A-Box
1	773 961	* CAN-Databus-Multi-Adapter
1	738 985	** Automotive meter
1	LDS00001 4	Stopwatch, digital

***Accessories***
2	579 13 8	* Toggle switch STE 2/19
1	577 30 4	Resistor, 62 Ω, STE 2/19
1	315 39 4	Weight, 1 kg
1	738 975	* Diagnostic socket 16 Pin
3	500 59 8	Safety bridging plugs, black, set of 10
1	500 592 8	Safety bridging plugs with tap, black, set of 10
1	501 44 4	Connecting leads, 19 A, 25 cm, red/blue, pair
1	738 05 4	Connection leads I, set
1	500 600 4	Safety connection lead, 10 cm, yellow/green
3	500 601 4	Safety connection lead, 10 cm, red
1	500 620 4	Safety connecting lead 50 cm, yellow/green
1	500 621 4	Safety experiment cable, 50 cm, red
2	500 641 8	Safety experiment cable, 100 cm, red
1	500 661 4	Safety connection lead, 200 cm, red
2	500 647 4	Safety connection lead 100 cm brown
2	500 644 8	Safety experiment cable, 100 cm, black
2	501 85 4	Adapter 4-mm plug/4-mm socket
1	738 01 8	* Cable and plug box
1	726 09 4	Panel frame T130, two-level
1	775 053DE 4	LIT-print: Electrical power steering, German
1	775 053EN 4	LIT-print: Electrical power steering

***Option(s) or optional supplementary equipment***
1	500 593 8	Fault simulation plugs, black, set of 10

Electrical assisted power steering

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