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Steering system and method for operating steering system

A technology of steering system and working cylinder, which is applied in the field of steering system and can solve expensive problems

Inactive Publication Date: 2018-07-31
ROBERT BOSCH AUTOMOTIVE STEERING
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, this requires further components, requires additional installation space and is therefore expensive

Method used

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  • Steering system and method for operating steering system
  • Steering system and method for operating steering system
  • Steering system and method for operating steering system

Examples

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Embodiment Construction

[0037] figure 1 Shows a schematic illustration of a motor vehicle F with A for the output shaft according to the first embodiment of the invention n Steering system 1.

[0038] Advantageously, the motor vehicle F has an output shaft A for the motor vehicle F n The steering system 1. In order to detect the front axle A v wheel at R n Steering angle α, set the steering angle sensor F α . In order to detect the driving speed v of the motor vehicle F, a driving speed sensor S is set v . The signal of the driving speed sensor via (in figure 1 not shown in) the signal line is passed to the driven shaft A of the motor vehicle F n 1 of the steering system. In particular, the signal is delivered to (at figure 1 at the control unit not shown in the figure 1 (not shown) electric motor and a reversible hydraulic pump driven by it. In addition, the control unit is connected to the working cylinder (in the figure 1 not shown in ) a linear sensor that enables the driven shaft A...

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Abstract

The invention relates to a steering system (1) for a trailing axle (An) of a motor vehicle (F), comprising an electric motor (M) for driving a hydraulic pump (P), wherein a first valve (12) is fluidically connected to the pump (P) such that same blocks fluid flow between a central bore (11) of a working cylinder (10) and the pump (P) when pressure is generated by the pump (P), and same releases afluid flow between the central bore (11) of the working cylinder (10) and the pump (P), in a non-pressurised state of the pump (P), to divert hydraulic fluid from the working cylinder (10) via the central bore (11) of the working cylinder (10) by means of an adhesion-driven return movement of a piston (14) arranged in the working cylinder (10) into a central position (G). The invention further relates to a method for operating a steering system (1) for a trailing axle (An) of a motor vehicle (F).

Description

technical field [0001] The invention relates to a steering system for a driven axle of a motor vehicle. Furthermore, the invention relates to a method for operating a steering system for an output shaft of a motor vehicle. Background technique [0002] Heavy vehicles, especially commercial vehicles, usually have more than two axles, so-called driven axles (NLA). If the NLA is implemented rigidly, the vehicle has a large turning circle. Therefore, in addition to front axle steering, a steerable NLA is usually additionally installed. In this case, NLA enables forced steering or stick steering, ie steering by means of a return movement of the wheels themselves. This additional NLA steering enables a smaller turning radius and thus higher maneuverability. Additionally 15, the slip angle at the tires is reduced, thereby reducing the tire wear of the vehicle. [0003] However, active steering to NLA is only desired at low speeds. At higher vehicle speeds it is desirable that...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B62D7/14
CPCB62D5/12B62D7/144B62D7/148B62D15/0225B62D5/064
Inventor F·霍夫曼M·赫格勒K·埃克曼
Owner ROBERT BOSCH AUTOMOTIVE STEERING
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