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Electro-hydraulic power vehicle-brake system for an autonomously driving land vehicle

A technology of autonomous driving and service braking, applied in the direction of brake control system, brakes, brake components, etc.

Pending Publication Date: 2019-11-19
ROBERT BOSCH GMBH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Level 5 is also known as full automation and does not require a driver

Method used

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  • Electro-hydraulic power vehicle-brake system for an autonomously driving land vehicle

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Embodiment Construction

[0018] The electrohydraulic power-assisted vehicle brake system 1 according to the invention shown in the drawing is intended for land vehicles up to class 4 or 5, ie passenger vehicles, which travel autonomously on public roads. Level 4 represents autonomous driving, where driver intervention may be required, and level 5, the highest level, represents autonomous driving without driver intervention.

[0019] The booster-vehicle braking system 1 has a service brake assembly 2 and an auxiliary brake assembly 3 . The service brake assembly 2 is provided for a brake actuation, and the auxiliary brake assembly 3 is provided for a brake actuation in the event of a malfunction or failure of the service brake assembly 2 . The hydraulic wheel brakes 4 are connected to the service brake assembly 2 via brake lines (four brake lines in this embodiment). The auxiliary brake assembly 3 is connected to the service brake assembly 2 via brake lines in such a way that the wheel brakes 4 can al...

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Abstract

The present invention relates to an electro-hydraulic power vehicle-brake system (1) for a motor vehicle autonomously driving on public roads. A secondary brake unit (3) is connected to a service brake unit (2) so that in the event of a failure of the service brake unit (2), the vehicle brake system (1) is able to be actuated using the secondary brake unit (3). In order to be able to rapidly buildup a brake pressure with the aid of the secondary brake unit (3) even with a cold and viscous brake fluid, brake fluid reservoirs are provided that are integrated into the secondary brake unit (3) and are connected by short line lengths to hydraulic pumps of the secondary brake unit (3).

Description

technical field [0001] The invention relates to an electrohydraulic booster-vehicle braking system with the features according to the preamble of claim 1 and an electrohydraulic booster-vehicle braking system for autonomous driving on public roads and a vehicle brake system according to the preamble of claim 9 feature method. Background technique [0002] For autonomous driving up to Level 4 (which may require driver intervention) and Level 5 (the highest level; no driver required), redundant power-vehicle braking systems are required that operate in close to The possibility of safety excludes a complete failure of the vehicle's braking system without driver intervention. [0003] Laid-open document DE 10 2014 220 440 A1 discloses an electrohydraulic booster vehicle braking system with a service brake assembly and an auxiliary brake assembly. Both brake assemblies each have a booster brake pressure generator with an electrically controllable pressure source and a brake pre...

Claims

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Application Information

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IPC IPC(8): B60T13/14B60T17/02
CPCB60T13/144B60T17/02B60T7/042B60T13/146B60T13/662B60T13/686B60T13/745B60T7/12B60T2270/402B60T13/58B60T13/62B60T13/142B60T13/14
Inventor A.巴赖斯J.赖纳T.赞德
Owner ROBERT BOSCH GMBH