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Method for operating a brake system, brake system in which the method is performed, and uses of the brake system

A brake system, brake master cylinder technology, applied in the direction of the brake control system, brakes, brake components, etc., can solve the problems of understeer tendency, driving dynamics is not critical, the influence of vehicle steering ability, etc., to achieve high Driving comfort, comfortable regenerative braking and effective regenerative braking

Inactive Publication Date: 2015-11-04
CONTINENTAL TEVES AG & CO OHG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In addition, overbraking of the front axle leads to a stronger understeer tendency of the vehicle, which is less critical or generally easier for the driver to control than an oversteer tendency in terms of driving dynamics
But this also has a negative effect on the steering ability of the vehicle

Method used

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  • Method for operating a brake system, brake system in which the method is performed, and uses of the brake system
  • Method for operating a brake system, brake system in which the method is performed, and uses of the brake system
  • Method for operating a brake system, brake system in which the method is performed, and uses of the brake system

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Embodiment Construction

[0033] figure 1 A motor vehicle 1 is shown which has a braking system which is suitable for carrying out the method according to the invention. The vehicle according to the example is a hybrid vehicle with an internal combustion engine 5 and an electric drive 6 with one or more electric machines which can be controlled as generators for charging the battery , in order to charge one or more vehicle batteries not shown. In this case, an engine control unit 12 is provided for controlling the electric drive, which is connected to the electrohydraulic control unit 11 of the brake system. In the example shown, the electric drive 6 acts on the rear axle HA of the vehicle. The method according to the invention can in principle be recycled regardless of which wheels 4-a, 4-b, 4-c, 4-d are attached to the friction brakes 2-a, 2-b, 2-c, 2-d In particular, an electric drive connected only to the front axle VA can be provided as an alternative. The wheels of one or more axles may be co...

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Abstract

The invention relates to a method for operating a brake system for motor vehicles, said brake system comprising an electrically controllable pressure-providing device (25), which comprises a cylinder / piston assembly having a hydraulic pressure chamber (18) and having a piston (19) that can be moved by an electromechanical actuator (20, 21), a number of hydraulic wheel brakes (2-a, 2-b; 2-c, 2-d), which are associated with two axles (VA; HA) of the vehicle (1) and can be supplied with braking pressure via the hydraulic pressure chamber (18), and a sensor (10, 13) for detecting the driver braking request. According to the invention, an electric drive (6) having at least one electrical machine, which can also be operated as a generator, is associated with at least one axle (HA) of the vehicle, and, during regeneration braking, in which a generator deceleration is built up by the electric drive (6), the cylinder-piston assembly (18-20) is controlled in such a way that the pressure (202; 303; 402, 403) in the hydraulic pressure chamber (18) is adjusted in accordance with the difference between the requested braking deceleration (201; 301; 401) and the generator deceleration (203; 304; 406) built up by the electric drive (6). The invention further relates to a brake system in which the method is performed and to uses of the brake system.

Description

technical field [0001] The invention relates to the method according to the preamble of claim 1 , the braking system according to the preamble of claim 12 and the use of the braking system. Background technique [0002] Motor vehicles known under the term "hybrid vehicles" with an at least partially electric drive are gaining popularity. During braking, at least one electric machine of the electric drive can be operated as a generator in order to recover the kinetic energy of the vehicle as electrical energy and store it in the battery; this is also known under the term "recovery". In order to recover maximum energy, it is desirable that during regenerative braking the braking deceleration is applied as completely as possible by the generator of the electric drive. Since energy can no longer be stored in a fully charged battery or the electric drive can no longer be used as a generator, hybrid vehicles are additionally equipped with friction-based wheel brakes in order to e...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B60T8/40
CPCB60T8/4081B60T2270/604B60T8/4827
Inventor G·罗尔J·博姆M·贝西尔
Owner CONTINENTAL TEVES AG & CO OHG
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