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Method for disconnecting an electrical machine on a running gear of a vehicle, in particular for a hybrid motor vehicle

A traveling device and vehicle technology, which can be applied to the arrangement of multiple different prime movers of hybrid vehicles and general power units, and the use of engine-driven traction, etc., and can solve problems such as difficulties.

Active Publication Date: 2012-09-05
PEZHO SITROEN AUTOMOBILS SA
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] With the vehicle in motion, it is very difficult to disengage the pawl quickly and without interruption, whether the vehicle is at a constant speed, accelerating or decelerating

Method used

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  • Method for disconnecting an electrical machine on a running gear of a vehicle, in particular for a hybrid motor vehicle
  • Method for disconnecting an electrical machine on a running gear of a vehicle, in particular for a hybrid motor vehicle
  • Method for disconnecting an electrical machine on a running gear of a vehicle, in particular for a hybrid motor vehicle

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0024] refer to figure 1 , the hybrid vehicle 10 includes: an engine set 11 for driving two front wheels 14 of the vehicle 10 and an engine set 12 for driving two rear wheels 44 belonging to the same rear running gear of the vehicle 10 . The engine block (GMP) 11 comprises a heat engine known per se, positioned here at the front of the vehicle for illustration only. The engine block 12 includes an electric machine 42 connected to wheels 44 by a coupling mechanism 43 .

[0025] figure 2 show in more detail figure 1 engine block 12. In order to simplify the drawings for easy understanding, the axis of the motor 42 and the axis of the wheel 44 are schematically coincident as the same axis 46, on which the motor 42, the coupling mechanism 43 and the half of the sensing block symbolizing the two wheels 44 are simply shown .

[0026] In the coupling mechanism 43 , the jaw system includes an upstream jaw 51 and a downstream jaw 52 . The upstream jaw 51 is integrally connected ...

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PUM

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Abstract

To disconnect an electrical machine (42) that is connected by the running gear wheels (44) of a vehicle by means of dogs (51, 52), the method includes two steps that are consecutively actuated on the basis of a disconnection request: a first step of controlling the electrical machine (42) by means of torque, wherein a torque guideline, equal to a calibrated target torque threshold (d), is applied to the electrical machine (42) so as to obtain a zero torque that is exerted between the dogs (51, 52); and a second step of controlling the electrical machine (42) by means of torque, wherein a torque guideline, following a slope starting with said calibrated target torque threshold (d) and ending with a zero value, is applied to the electrical machine (42).

Description

technical field [0001] The present invention relates to a method and system for decoupling an electric machine from the running gear of a vehicle, especially a hybrid motor vehicle, while the vehicle is in motion. [0002] The method and system are particularly applicable to hybrid vehicles that also use a thermal engine in order to involve an electric machine in the transmission of the vehicle. Background technique [0003] Patent document FR2723553 discloses, for example, a motor vehicle comprising a selective control system for separately or synchronously actuating electric and thermal drive trains. [0004] Patent document US5403244 discloses an electric drivetrain of a direct transfer coupled vehicle using a synchronization device based on friction plates of the clutch plate type. Clutch-type couplings are generators of energy losses. [0005] To improve efficiency, dog (or dog clutch) couplings are known in the art. Patent document FR20905438 describes a method of g...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B60W20/00B60K6/387B60K6/52B60K6/48B60W10/08B60W10/02B60L50/15B60L50/16
CPCB60K6/48B60K6/52B60W20/00F16D48/06F16D2500/10425F16D2500/10462F16D2500/3026F16D2500/50615F16D2500/7046F16H61/2807F16H63/502F16H2306/46B60L50/61B60L50/16Y02T10/62Y02T10/7072Y02T10/72Y02T10/70B60W20/40B60W10/08B60W10/02
Inventor E·舍费尔F·加利诺
Owner PEZHO SITROEN AUTOMOBILS SA
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