Hill start assist system and motor vehicle having same

A technology of auxiliary systems and motor vehicles, applied in the direction of brake system interaction, brakes, brake components, etc., can solve the problems of low cost and achieve the effect of low cost

Active Publication Date: 2017-05-31
ZF CV SYST EURO BV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, this cannot be achieved cheaply

Method used

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  • Hill start assist system and motor vehicle having same
  • Hill start assist system and motor vehicle having same

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0034] figure 1 A schematic structure of motor vehicle 101 is shown. Motor vehicle 101 may be, for example, a medium or heavy duty truck without an ABS system.

[0035] Motor vehicle 101 has a number of brake systems 103 . exist figure 1 A first braking device 103a and a second braking device 103b are shown in . Brake systems 103 a , 103 b each include brake cylinders for building up braking forces at wheels (not shown) of motor vehicle 101 .

[0036] The brake system 103 is connected to a compressed air source 102 by means of brake lines 105a, 105b, 105c. A brake pedal unit 104 is connected between the compressed air source 102 and the brake system 103 , by means of which a brake pressure corresponding to the driver's desired brake system 103 can be activated.

[0037] Motor vehicle 101 also has an electronic control unit 113 , which is connected in pilot signal form to engine 115 and in pilot signal form to parking brake 117 , for example by means of an electronic engine ...

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PUM

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Abstract

The invention relates to a hill start assist system (1) for a motor vehicle (101), comprising an automated transmission (3), which has an electronic controller (5), and a valve assembly (7) for connecting between a compressed-air source (102) and a number of brake systems (103) of the motor vehicle (101) in order to conduct compressed air from the compressed-air source (102) to the brake systems (103) by means of actuation of a brake pedal unit (104). According to the invention, the valve assembly (7) is connected to the electronic controller (5) in a signal-conducting manner, and the electronic controller (5) is designed to activate and deactivate the valve assembly (7) in such a way that, in the deactivated state, the brake pressure triggered by means of actuation of the brake pedal unit (104) is conducted to the brake systems in an uninfluenced manner and, in the activated state, a triggered brake pressure is conducted to the number of brake systems (103) and is confined there.

Description

technical field [0001] The invention relates to a hill-start assist system for a motor vehicle, in particular a commercial vehicle without ABS, having an automated shift transmission with an electronic control unit. [0002] According to the invention, an automated shift transmission is understood to be a so-called AMT. The electronic control unit is understood to mean, in particular, the electronic transmission and clutch control TCM. Background technique [0003] Hill start assist systems for motor vehicles are generally known. They are implemented, for example, in vehicles with an ABS system in that, independently of the driver's active hill-start assist status, the brake system does not activate the hill-start assist status via the ABS valve. The triggering of the brake pressure is dependent on the driver so that the driver can take his foot off the brake pedal without causing the vehicle to roll back. Brake release occurs in known systems as soon as a signal is trans...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B60T7/12B60T13/66
CPCB60T7/122B60T13/662B60T2201/06B60T2260/04
Inventor 汉斯-于尔根·比纳施德特勒夫·施米特安德烈亚斯·蒂姆延斯·维尔姆斯
Owner ZF CV SYST EURO BV
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