Zf Friedrichshafen Ag

Zf Lenksysteme Gmbh

Willi Nagel

Martin Budaker

Peter Brenner

Uwe Loreit

Wolfgang Abele

Gerhard Hagele

Klaus Noder

Gerhard H{umlaut Over (a)}gele

An electrically supported power steering system for motor vehicles includes an input shaft, which is mechanically linked to a steering wheel for transmitting a steering torque required for steering of wheels to be steered. An output element is mechanically linked to the wheels to be steered. An electric motor, through which a servo force can be applied directly or indirectly to the output element, is arranged on the power steering system. The input shaft and the output element are connected to one another via a torsion bar. A detection unit for detection of a torque acting on the input shaft and of other steering-specific parameters includes a single pulse generator designed as a magnet ring and at least one magnetoresistive sensor.

Electrically assisted power steering system for motor vehicles

An electrically assisted power steering system for motor vehicles includes an input shaft (,), which is operatively connected to a steering wheel, for transmitting a steering torque required to steer the vehicle wheels that are to be steered. An output member is operatively connected to the wheels to be steered. A servomotor (,), by which an auxiliary force can be exerted on the input shaft (,) or the output member, is disposed in the power steering system. The input shaft (,) and the output member are connected to one another via a torsion bar (,). A detection unit for detecting a steering torque acting on the input shaft (,) includes one magnetic ring (,) each, connected to the input shaft (,) and the output member, and one associated sensor (,) each. Each magnetic ring (,) has the same number of magnetic pole pairs. Each magnetic ring (,) is assigned a sensor (,), structurally connected to the housing, by which both the steering torque and the rotary speed of the input shaft (,) are detected.

Electrically assisted automotive power steering system

An electronically assisted power steering system for motor vehicles contains a primary shaft (,), which is in operative connection with a manual steering wheel for transmitting the steering torque required for steering the steerable wheels of the vehicle. An auxiliary force can be exerted on the primary shaft (,) or the output member by a servo motor (,). A detection unit is used for non-contact detection of the direction and value of a steering angle and/or other movement-dependent values occurring at the primary shaft (,). The detection unit includes at least one pulse transmitter (,) connected with the primary shaft (,) or the output member, and at least one sensor (,). The pulse transmitter (,) is located in the interior of a housing (,), and the sensor (,) outside the housing (,). There is a gap between the pulse transmitter (,) and the sensor (,). The housing (,) is closed in the area located between the pulse transmitter (,) and the sensor (,).

System housing for electronically assisted power steering system with inside pulse transmitter and outside sensor

Power-assisted steering device

Growing community of inventors

Remseck, Germany

Willi Nagel