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Braking system and method for braking a vehicle with a hybrid drive

A brake system and hybrid drive technology, applied in brake control systems, hybrid vehicles, electric brake systems, etc., can solve problems such as unavoidable and unstable driving conditions

Active Publication Date: 2009-09-02
VOLKSWAGEN AG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0009] With the systems known from the prior art it is not possible to ensure that the occurrence of unstable driving states is avoided and at the same time the maximum possible regenerative braking and thus energy recovery are performed in each operating state

Method used

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  • Braking system and method for braking a vehicle with a hybrid drive
  • Braking system and method for braking a vehicle with a hybrid drive
  • Braking system and method for braking a vehicle with a hybrid drive

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Embodiment Construction

[0029] Embodiment of the invention

[0030] exist figure 1 A vehicle 1 is schematically shown in FIG. 1 , which includes an embodiment of a braking system. Vehicle 1 has steerable non-driven wheels 2 of a front axle 3 . The non-steerable wheels 4 of the rear axle 5 can be driven by means of a hybrid drive 6 . Hybrid drive 6 includes internal combustion engine 7 and electric machine 8 . The internal combustion engine 7 and the electric machine 8 can be actively coupled to the rear axle 5 via a clutch 9 , 10 in each case. One or more existing transmissions are not shown. The electric machine 7 is coupled to an electrical energy store 11 . The electrical energy stored in the electrical energy storage 11 can be used to drive the electric motor 8 . However, the electric machine 8 can also be operated as a generator and feed electrical energy into the electrical energy store 11 . The charging and monitoring unit 12 monitors the state of charge of the electrical energy stor...

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PUM

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Abstract

The invention relates to a braking system as well as a method for braking a vehicle (1) having a hybrid drive (6), in which at least one wheel (4), preferably at least the wheels (4) of one axle (5), can be braked by a regenerative brake and by a service brake (20). The braking system comprises a driving stability controller (15) which detects state variables which describe the driving dynamic of the vehicle and for which threshold values and / or threshold value combinations exist. The driving stability controller (15) is designed in such a way that an influence is exerted on the braking force individually for each wheel when one of the threshold values or one of the threshold value combinations is reached, exceeded, or decreased. A preset maximum regenerative braking force is determined from the state variables detected by the driving stability controller (15), and the regenerative braking is controlled in such a way that the regenerative braking force exerted on the at least one wheel (4) does not exceed the determined preset maximum regenerative braking force.

Description

technical field [0001] The invention relates to a braking system of a vehicle with a hybrid drive, for which at least one wheel, preferably those of at least one axle, can be braked with a regenerative brake and a service brake, in which a driving stability controller is provided , which determines a state parameter describing the driving dynamics of the vehicle, for which there are thresholds and / or combinations of thresholds, wherein the driving stability controller is configured to reach, exceed and / or fall below one of the above-mentioned thresholds or the threshold One of the combinations results in a wheel-independent braking force action. The invention also relates to a method for operating such a brake system. Background technique [0002] A hybrid drive of a vehicle is characterized in that the vehicle has at least two different drive machines. Hybrid drives currently generally have an internal combustion engine as well as an electric machine. The advantage of a ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B60T8/1755B60T13/58B60L7/26
CPCB60T1/10B60W10/184B60T8/1755B60T2270/613B60W10/08B60L7/24B60W30/18127B60W20/00B60W30/02B60L3/102B60L3/108B60W20/13
Inventor B·威特
Owner VOLKSWAGEN AG
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