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Control device for a hybrid electric vehicle

A technology of hybrid vehicle and control device, which is applied in the direction of hybrid vehicle, power unit, pneumatic power unit, etc.

Inactive Publication Date: 2011-08-31
MITSUBISHI FUSO TRUCK AND BUS CORPORATION
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] Especially when starting the vehicle, on the basis of the increased possibility that the smooth start cannot be performed only by the motor / generator, driving due to the above-mentioned insufficient driving force feel significantly lower

Method used

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  • Control device for a hybrid electric vehicle
  • Control device for a hybrid electric vehicle
  • Control device for a hybrid electric vehicle

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0041] Embodiments of the present invention will be described below based on the drawings.

[0042] figure 1 It is a configuration diagram of main parts of a hybrid vehicle 1 using the present invention. An input shaft of a clutch 4 is connected to an output shaft of an engine 2 which is a diesel engine. The output shaft of clutch 4 is connected to the automatic transmission (hereinafter referred to as On the input shaft of transmission) 8. The output shaft of the transmission 8 is connected to the left and right driving wheels 16 through the propeller shaft 10 , the differential device 12 and the drive shaft 14 .

[0043] Accordingly, both the output shaft of the engine 2 and the rotational shaft of the motor / generator 6 can be mechanically connected to the drive wheels 16 when the clutch 4 is engaged. On the other hand, when the clutch 4 is disengaged, only the rotating shaft of the motor / generator 6 can be mechanically connected to the drive wheels 16 .

[0044] The D...

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PUM

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Abstract

A hybrid electric vehicle (1) is arranged such that a driving force output by an engine output system and a motor / generator output system can be transmitted to driving wheels (16) through an automatic transmission (8) having a plurality of forward gears. When it is detected that a vehicle ECU (22) is in a predetermined state or the failure of the motor / generator output system is detected through a failure detection means, namely it is difficult for the motor / generator (6) to output an upper limit torque predetermined as a generable maximum torque, the vehicle ECU controls the automatic transmission (8) by controlling a gear shift map (SU2, SD2) configured such that the automatic transmission is downshifted earlier in accordance with a change in the operating state of the vehicle and up shifted later in accordance with a change in the operating state of the vehicle in comparison with a gear shift map (SU1, SD1) that is used when it is not detected that the vehicle is in the predetermined state and it is detected by the failure detection means that the motor / generator output system is normal.

Description

technical field [0001] The present invention relates to a control device for a hybrid vehicle, and more particularly to a control device for a hybrid vehicle capable of separately transmitting driving force of an engine and driving force of a motor / generator to drive wheels of the vehicle. Background technique [0002] Currently, a so-called parallel hybrid vehicle capable of transmitting the driving force of the engine and the driving force of the motor / generator to the driving wheels separately is being developed and put into practical use. [0003] As such a parallel hybrid vehicle, it is possible to engage the clutch so that the driving force from both the engine and the motor / generator can be transmitted to the driving wheels, and disengage the clutch so that only the driving force of the motor / generator is transmitted to the driving wheels. A hybrid vehicle in which the state of driving wheels is switched is proposed in, for example, Japanese Patent Application Laid-Op...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F16H59/74F16H61/00B60K6/54B60K6/48B60K6/547B60L50/16B60W10/06B60W10/08B60W10/10B60W10/26B60W20/00F16H59/14F16H61/10
CPCY02T10/6286Y02T10/644Y02T10/7077Y02T10/6221Y02T10/62Y02T10/7072
Inventor 绪方诚木内达雄
Owner MITSUBISHI FUSO TRUCK AND BUS CORPORATION
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