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Vehicle driving apparatus

A driving device and vehicle technology, applied in the direction of transmission, power device, electric power device, etc., can solve problems such as performance degradation

Inactive Publication Date: 2020-10-27
TOYOTA JIDOSHA KK
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Therefore, for example, if the load (thermal load) caused by the heat of the differential limiting mechanism increases due to the heat generated by the driving of the electric motor being transferred to the differential limiting mechanism, it is necessary to limit the differential in order to ensure the cooling time of the differential limiting mechanism. As a result, there is a problem of performance degradation

Method used

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  • Vehicle driving apparatus
  • Vehicle driving apparatus
  • Vehicle driving apparatus

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Experimental program
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Embodiment

[0038] figure 1 It is a figure which shows the schematic structure of the vehicle 10 to which this invention is applied. exist figure 1 Among them, the vehicle 10 is an electric four-wheel-drive vehicle including an engine 12, a front-wheel drive device 20, and a rear-wheel drive device 28. The engine 12 is a known gasoline engine or a diesel engine that burns fuel and outputs power The drive unit 20 for the front wheels has a built-in electric motor 14, and transmits drive output from either or both of the above-mentioned engine 12 and electric motor 14 to the left and right front wheels 18L, 18R via the left and right front axles 16L, 16R. The rear wheel driving device 28 has a built-in electric motor 22, and transmits the driving force output from the electric motor 22 to the left and right rear wheels 26L, 26R via the left and right rear axles 24L, 24R. In addition, the rear wheel drive device 28 corresponds to the vehicle drive device of the present invention.

[0039]...

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Abstract

The present invention relates to a vehicle drive device, and provides a device capable of suppressing a thermal load caused by mutual heating of a motor and a differential limiting mechanism in a vehicle drive device including the motor, the differential mechanism for transmitting a drive force of the motor, and the differential limiting mechanism for limiting differential operation of the differential mechanism. Since the motor and the differential limiting mechanism are disposed apart from each other with the speed reduction mechanism and the differential mechanism interposed therebetween, mutual heating of the motor and the differential limiting mechanism can be suppressed, and an increase in the thermal load of the motor and the differential limiting mechanism due to mutual heating ofthe motor and the differential limiting mechanism can be suppressed.

Description

technical field [0001] The present invention relates to a vehicle drive device that outputs power of an electric motor as a drive force source to left and right drive wheels via a differential mechanism. Background technique [0002] A vehicle drive device has been proposed that includes: an electric motor as a drive force source; a reduction mechanism that amplifies and outputs the drive force of the electric motor; and a differential mechanism that mechanism distributes the driving force output from the reduction mechanism to a pair of drive shafts connected to the left and right drive wheels; Accordingly, it is possible to control the differential limit torque that limits the differential action of the differential mechanism. of Patent Document 1 figure 1 The described structure is such a drive device for a vehicle. [0003] prior art literature [0004] patent documents [0005] Patent Document 1: Japanese Patent Laid-Open No. 2003-294110 [0006] In addition, in t...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F16H48/22F16H37/08F16H57/04F16H57/029B60K17/16
CPCB60K17/16F16H37/08F16H48/22F16H57/029F16H57/04F16H57/0413F16H2057/02034F16H2057/02043B60K1/00B60K17/165B60K2001/001F16H2048/364F16H2048/366
Inventor 道下雅也
Owner TOYOTA JIDOSHA KK