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Method of braking a motor vehicle and the motor vehicle

A motor vehicle and electric braking technology, which is applied in various decoupling braking methods and systems, and can solve problems such as vehicle stability problems

Active Publication Date: 2016-08-10
RENAULT SA
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] However, regenerative braking can cause stability problems for the vehicle, especially in hard braking situations

Method used

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  • Method of braking a motor vehicle and the motor vehicle
  • Method of braking a motor vehicle and the motor vehicle
  • Method of braking a motor vehicle and the motor vehicle

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0032] figure 1 A schematic representation of a motor vehicle 1 comprising an electric or hybrid drive system 2 adapted to recover electrical energy during electric braking is provided.

[0033] The motor vehicle 1 is also equipped with a brake pedal connected to a force feedback device 3 adapted to perform data relating to the position or force applied to the pedal by the driver. collection. The force feedback device 3 converts the data received by it into electrical signals.

[0034] The force feedback device 3 is connected to an electronic control unit 4 capable of formulating multiple braking setpoints for hydraulic braking systems 5 equipped with multiple actuators and for electric drive systems or hybrid drives System 2.

[0035] Vehicle 1 further includes an electronic vehicle stability control system.

[0036] figure 2 Several steps of a braking method of a motor vehicle 1 according to the invention are shown schematically.

[0037] A first step E01 for formulat...

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PUM

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Abstract

Braking method for a motor vehicle equipped with an electric drive system or a hybrid drive system and comprising a hydraulic brake system, an electric brake system for recovering electric energy, a brake pedal, driver assistance system of a vehicle, and an electronic vehicle stability control system, the method comprising the steps of: - at a pedal torque set point (c_pedale) with respect to position or force applied to the brake pedal and with respect to the driver assistance Select a torque set point between a torque set point (c_aides) for the system, a hydraulic brake torque set point (c_sub) independent of the pedal state, through the electric drive system or hybrid drive system, - get Information about the stability of the vehicle (d_stability), based on the selected torque setpoint (c_sel), the independent hydraulic brake torque setpoint (c_sub) and information about the stability of the vehicle (d_stability) Develop a hydraulic brake torque set point (c_fr_hyd) and an electric brake torque set point (c_elec_br) intended for this electric or hybrid drive system.

Description

technical field [0001] The present invention relates to a braking method and system for an electric motor vehicle or a hybrid motor vehicle, and more particularly to decoupled braking methods and systems for an electric motor vehicle or a hybrid motor vehicle. Background technique [0002] The expression "decoupled braking" means braking without any direct mechanical connection between the brake pedal and the braking means. [0003] Thus, in contrast to conventional braking systems, decoupled braking systems allow the driver's action on the brake pedal to be decoupled from the actual resulting deceleration. [0004] Additionally, in electric or hybrid vehicles, braking may be provided by a brake actuator, such as a hydraulic actuator, or by an electric drive actuator capable of recovering electrical energy in regenerative mode, this Energy is storable in the battery, thus increasing the range of the electric or hybrid vehicle. [0005] Furthermore, there are known means fo...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B60T8/1755B60T1/10B60W30/18B60W10/08B60W10/188
CPCB60T1/10B60T8/1755B60T2260/09B60T2270/304B60T2270/604B60T2270/613B60W10/08B60W10/188B60W30/18127B60W2710/18Y10S903/947B60T8/172
Inventor H·阿兹R·波廷
Owner RENAULT SA