Zf Lenksysteme Gmbh

Robert Bosch Automotive Steering Gmbh

Robert Boschgmbh

Rainer Schaenzel

Juergen Bieber

Jens-Uwe Hafermalz

Gerd Speidel

Thomas Alber

Dennis Fuechsel

Ekkehard Kneer

Werner Bernhard

Marco Grau

Andreas Kruttschnitt

Jochen Schmid

Karl Benkler

Richard Kaisser

Franz-Josef Joachim

Michael Sturm

Michael Schmidt

Hartmut Specht

Hermann Ocker

Uwe Wietzel

Andreas Hoffer

A method for monitoring the condition of an electronic power steering apparatus or of at least one part of the electronic power steering apparatus of a motor vehicle includes continually capturing acceleration measured values in a region of the electronic power steering apparatus during a driving mode of the motor vehicle and continually providing the captured acceleration measured values to a damage computation section in the form of a damage meter that continuously sums the acceleration measured values and continually forms therefrom at least one variable characterizing a degree of damage to the electronic power steering apparatus or to the at least one part of the electronic power steering apparatus. The method further includes continually comparing the variable with at least one prescribed limit value.

Method for monitoring the status of an electronic power steering device of at least one component of the electronic power steering device of a motor vehicle

A device for pressing a first transmission element onto a second transmission element engaging in the first transmission element for a rack-and-pinion steering system of a motor vehicle. A pressure piece that can be loaded in the direction of the first transmission element by at least one spring element is displaceably guided in a housing. The spring element is produced from at least one dilatant elastomer.

Device for pressing a transmission element

A device for securing a unit in a housing, in particular for securing a fixed bearing of a pinion in a steering gear of a motor vehicle, comprises a securing element which is inserted into a bore in the housing. The securing element is provided with at least one latching lever, wherein the at least one latching lever latches into toothing gaps of a toothing geometry in the bore of the housing via a latching lug disposed at the free end of the latching lever, or wherein at least one latching lug is disposed in the bore, which latches into toothing gaps of a toothing geometry in the securing element.

Device for the positional securing of a unit

Disclosed is a bearing system for a worm engaging with a worm wheel as part of a steering gear, wherein the bearing system comprises at least one bearing with an outer ring, an inner ring, and rolling bodies that are movably accommodated between the outer an inner rings, the bearing being pivotally arranged in a bearing seat for accommodating the outer ring of the bearing, and wherein the inner ring accommodates one of the two shaft ends of the worm in order to seat said shaft end of the worm radially in the housing of the steering gear. For an improved dampening of the worm at least one spring element, which exerts a spring force on a region of the outer ring of the bearing, is provided at the bearing, said spring force supporting a pivotal motion of the worm toward the worm wheel.

Bearing system for a worm in a steering gear

A rack-and-pinion steering system, in particular for a motor vehicle, has a steering housing and a pinion which is inserted into the steering housing If. A rack whose toothing engages with the pinion is mounted so as to be axially displaceable in the steering housing. The rack-and-pinion steering system has a circulation lubrication system with lubricating oil, an arrangement for conveying lubricating oil from a lubricating-oil reservoir conveying lubricating oil to the toothing engagement location between the rack and the pinion.

Rack-and-pinion steering

A thrust piece unit for rack-and-pinion steering mechanisms, which is integrated into a housing bore of the steering mechanism housing of motor vehicles, in order to keep the pinion in constant intermeshing with the rack, the thrust piece unit comprising a cylinder part, a piston part and two chambers which are matched with one another and are filled with hydraulic medium and which are connected to one another via a replenishing valve and via a throttle point, and overload protection being additionally integrated in the thrust piece unit.

Thrust piece unit for rack-and-pinion steering mechanisms

A rack-and-pinion steering system for motor vehicles includes a rack, which is mounted in a housing such that it is longitudinally displaceable and kept in constant engagement with a pinion by a pressure piece, is connected at both ends to in each case one steering tie rod in an articulated manner, sealing bellows being fastened on one side to the housing and on the other side to the longitudinally displaceable steering rods. The steering system has a pressure compensation element integrated in the pressure piece.

Rack-and-pinion steering system for motor vehicles

For a hydraulic servo-assisted steering system for motor vehicles, classifying storage of the respectively measured, actual valve characteristic curves is provided and, corresponding to this, energization characteristic curves for the magnetic actuator of the converter are provided, which may be paired in a classified manner in order to compensate for deviations from a predefined set valve characteristic curve, and a testing method for such a hydraulic servo-assisted steering system is provided, in which the loading pressure of the servo actuator is influenced as a function of an input steering torque and in a speed-dependent manner, the speed-dependent influence being effected via the electro-hydraulic converter, whose energization may be set in a manner superimposed on the speed-dependent definition with regard to the correction of tolerances.

Hydraulic servo-assisted steering system for vehicles and a controlling method for a steering system of this type

The invention relates to a rotary slide valve () of servo-assisted steering systems for motor vehicles that comprises an input and an output element (), which can rotate in relation to one another around a limited angle of rotation, and comprises a coupling connection () of the output element () to a control slide (). A torque-transmitting, non-distorted coupling connection () between the control slide () and the output element () is provided by a coupling pin (), which is fixed inside the output element () and radially extends into a seat of the control slide (). The seat axially tapers to a cross-section that matches the cross-section of the coupling pin (), whereby it is easy to insert the coupling pin () into the seat and possible to attain a play-free supporting position for the coupling pin () by axially displacing the output element () or the coupling pin () and control slide () in relation to one another.

Growing community of inventors

Essingen, Germany

Rainer Schaenzel