Actuating device for a master brake cylinder of a motor vehicle

A master brake cylinder and control device technology, applied in the direction of brake transmission, brakes, vehicle components, etc., can solve problems such as complex structures, achieve the effect of less quantity, processing and assembly costs, and save space

Inactive Publication Date: 2015-04-01
VOLKSWAGEN AG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Complicated design due to the coupling required in the brake booster

Method used

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  • Actuating device for a master brake cylinder of a motor vehicle
  • Actuating device for a master brake cylinder of a motor vehicle
  • Actuating device for a master brake cylinder of a motor vehicle

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0036] The first exemplary embodiment relates to a braking system 1 for a motor vehicle. The brake system 1 includes an electromechanical actuating device 2 which is arranged between a brake pedal 3 and a master brake cylinder 4 . An ESP hydraulic system unit of a known design, not shown in further detail, is coupled to master brake cylinder 4 in order to adjust the brake pressure on the wheel brakes of the motor vehicle on a wheel-by-wheel basis.

[0037]The electromechanical actuating device 2 is actuated by the driver as a function of the brake pedal 3 in order to provide a braking force. For this purpose, the position of brake pedal 3 is detected by means of a position sensor. The position sensor can be embodied as an angle of rotation sensor, for example. However, it is also possible to detect the brake pedal position by means of a linear displacement sensor. Alternatively or additionally, an actuating force F exerted by the driver on brake pedal 3 can be determined by...

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PUM

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Abstract

The invention relates to an actuating device for a master brake cylinder of a motor vehicle, comprising a housing (5) for arranging between the master brake cylinder (4) and a brake pedal (3), a pressure element running through said housing in order to actuate an actuating piston of the master brake cylinder (4), comprising an electric motor (8), comprising a screw (9) which is driven by the electric motor (8) and crosses the pressure element, and comprising a transmission which is arranged in the housing (5) and which couples the screw (9) to the actuating piston so as to convert a rotational movement of the screw (9) into a translational movement of the actuating piston. In this manner, a design is achieved which is simpler and less expensive with respect to serial production.

Description

technical field [0001] The invention relates to an actuating device for a brake master cylinder of a motor vehicle. Background technique [0002] In order to brake the car, the driver's pedal force is often not sufficient, so the car is usually equipped with a brake booster. Brake boosters usually use the negative pressure generated by the internal combustion engine to perform work. In this case, the pressure difference between the motor pressure and the ambient pressure is used in order to exert an amplified force on the piston rod of the brake master cylinder in addition to the pedal force of the driver. [0003] With the increasing mass of vehicles, brake boosters with relatively large diameters are required. Typical brake boosters have a diameter of 8 to 10 inches, ie up to 26 cm. Brake boosters are therefore very bulky and limit the space available for other components in the motor compartment. [0004] However, in the case of diesel motors, modern direct-injection ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B60T13/74
CPCB60T13/745B60T8/4077
Inventor H. 舒曼E. 维尔斯克P-C. 道尔B. 内夫
Owner VOLKSWAGEN AG
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