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Operation of electrical machine of hybrid electric vehicle prior to closing jaw clutch

A claw clutch, hybrid technology, applied in hybrid vehicles, intermeshing clutches, the arrangement of multiple different prime movers of general power units, etc., can solve problems such as vehicle instability and danger

Inactive Publication Date: 2019-08-23
PEZHO SITROEN AUTOMOBILS SA
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0011] However, this approach can cause problems in the event of a control system failure if high torque control is applied to the motor while the dog clutch is incorrectly closing
Acquiring a torque peak at the wheels driven by the motor which accelerates or decelerates the vehicle which could be dangerous to the driver and his entourage by destabilizing the vehicle

Method used

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  • Operation of electrical machine of hybrid electric vehicle prior to closing jaw clutch
  • Operation of electrical machine of hybrid electric vehicle prior to closing jaw clutch

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0028] figure 1 A vehicle traction motor 2 with a rotational speed is shown. The motor 2 is connected to a dog clutch 6 through a first transmission 4. The dog clutch 6 includes an upstream element that is connected downstream when the dog clutch 6 is closed. element. The dog clutch 6 is connected to the wheels 10 of the axle of the vehicle through the second transmission device 8.

[0029] The first transmission device 4 can have a speed reduction ratio, and the first element of the clutch 6 rotates at a speed less than the speed; or it is directly connected to the shaft of the motor 2, so that the first element of the clutch rotates at a certain speed, which is The speed of the motor.

[0030] Likewise, the second transmission device 8 may have a speed reduction ratio, or, for example, in the case where the dog clutch 6 is attached to a differential that drives the rear wheels of the vehicle, the dog clutch 6 is directly connected to the wheels 10.

[0031] The monitor 12 using a...

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PUM

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Abstract

The invention relates to a strategy for operating an electrical machine (2) connected by a jaw clutch system (6) to the wheels (10) of a hybrid electric vehicle which implements a speed control methodfor controlling the electrical machine (2) with a synchronising speed set point value (18) in order to adjust with a margin the speeds of the two elements of the clutch (6) to be interconnected, in preparation for closing the clutch, the strategy being distinguished in that it prevents the control of the speed of the electrical machine (2) in preparation for closing the jaw clutch (6) from beingimplemented if the speed difference between the two elements of the clutch (6) is lower than a speed threshold and if, for the electrical machine (2), the difference between the speed set point value(18) and the actual speed (16) is higher than a speed threshold.

Description

Technical field [0001] The present invention relates to a control strategy for a motor and a hybrid vehicle including a device for implementing the strategy. The motor is connected to the wheels of the hybrid motor vehicle through a dog clutch system. Background technique [0002] In particular, a known type of hybrid vehicle disclosed in the document FR-B1-2954441 includes a heat engine and an electric motor. The heat engine drives the front wheels of the vehicle through a transmission, and the electric motor drives the rear wheels through a transmission. The transmission includes Jaw clutch controlled by automatic actuator. [0003] Electric motors powered by traction batteries can operate as an engine by extracting energy from these batteries to transmit torque to the rear wheels; or as a generator by recovering energy to charge the batteries. [0004] By connecting the electric motor to the rear wheels, it is realized: the driving in the hybrid power mode, which includes passing...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B60K6/48B60W20/50B60K6/52F16D11/00
CPCB60W20/50B60W2050/0292B60W2050/0295B60W2510/081B60W2520/10B60W2710/081F16D11/00F16D2500/10462F16D2500/5114
Inventor 格雷戈尔·桑德詹妮恩阿诺德·巴蒂特
Owner PEZHO SITROEN AUTOMOBILS SA