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A method and system for providing brake boost in a hybrid moto vehicle

A brake booster and brake system technology, applied in the field of power sources, can solve problems such as not being able to provide engine operation

Inactive Publication Date: 2008-07-16
FORD GLOBAL TECH LLC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

It is known to provide switches for turning the auxiliary booster on and off, but these known systems do not provide for engine operation in the event of auxiliary booster failure

Method used

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  • A method and system for providing brake boost in a hybrid moto vehicle

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Embodiment Construction

[0012] As shown in FIG. 1, a brake booster 10, which may include a vacuum booster or a hydraulic booster, or other types of primary brake boosters known to those skilled in the art and disclosed in this disclosure, is provided by an internal combustion engine 22. Power, the internal combustion engine drives a boost generator 14 connected to the brake booster 10 . The term "boost generator" as used herein refers to a vacuum pump or an air compressor, or a hydraulic pump, driven directly by the engine 22 . Alternatively, the boost generator may include a vacuum port known to those skilled in the art that inserts into the intake manifold of the engine 22 . Controller 26, preferably a microprocessor controller of the type known to those skilled in the art and disclosed in this disclosure, provides monitoring and control functions for the system.

[0013] The brake booster 10 may also be powered by an auxiliary booster device 18 which, as described above, may include an electrical...

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Abstract

A method for providing brake boosting in a hybrid motor vehicle having a brake boosting system powered by an internal combustion engine and by an auxiliary brake boosting device includes monitoring the output of an auxiliary brake boosting device not driven by the engine, and in the event that the auxiliary brake boosting device is not operating properly, starting the internal combustion engine associated with the vehicle to provide a desired level of brake boost.

Description

technical field [0001] The present invention relates to a method and system for providing multiple power sources for adding boost to a main braking system in a hybrid motor vehicle, such as a hybrid electric vehicle or a hybrid hydraulic vehicle. Background technique [0002] Hybrid motor vehicles, such as hybrid electric vehicles and hybrid hydraulic vehicles, offer drivers significant fuel economy improvements. Typically, hybrid electric vehicles are powered selectively using an electric traction motor and an internal combustion engine. Hybrid hydraulic vehicle applications combine an engine with a hydraulic drive motor. [0003] Part of the fuel economy improvement offered by hybrid hydraulic and electric vehicles results from the internal combustion engine being turned off at various times, such as during deceleration and when the vehicle is stuck in traffic, as well as in other modes of operation. Because power braking systems are often required to function when the v...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B60K25/04B60T13/52B60W30/18
CPCB60T1/10B60W10/06B60W10/30B60W20/00B60W30/18109B60T13/146B60W20/15
Inventor 戴尔·克劳姆贝兹丹尼尔·伽柏彼得·沃雷尔威廉·大卫·特里赫恩
Owner FORD GLOBAL TECH LLC