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Control device for vehicular transmission

A technology for control devices and transmissions, applied in the direction of transmission, transmission control, components with teeth, etc., can solve problems such as impact

Inactive Publication Date: 2021-04-20
TOYOTA JIDOSHA KK
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In the vehicular transmission configured as described above, during running while the power of the drive source is being transmitted via the second power transmission path, a failure occurs in the one-way clutch or the mode switching clutch and the transmission acts in both directions. When the state of power is fixed, if the first clutch is engaged to switch the power transmission path to the first power transmission path, there may be a impact

Method used

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  • Control device for vehicular transmission
  • Control device for vehicular transmission
  • Control device for vehicular transmission

Examples

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Embodiment Construction

[0020] Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings. It should be noted that in the following embodiments, the drawings are appropriately simplified or deformed, and the size ratio and shape of each part may not be accurately drawn.

[0021] figure 1 It is a figure explaining the schematic structure of the vehicle 10 to which this invention is applied, and the control system of the electronic control device 100 which controls the vehicle 10. FIG. exist figure 1 Among them, the vehicle 10 includes a vehicle power transmission device 16 (hereinafter, referred to as the power transmission device 16 ) that transmits the power of the engine 12 to the drive wheels 14 .

[0022] The power transmission device 16 is provided between the engine 12 and the drive wheels 14 . The power transmission device 16 is provided in a housing 18 as a non-rotating member: a known torque converter 20 as a fluid transmission device conn...

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Abstract

The present invention relates to a control device for vehicular transmission. When a rotation speed difference between rotary members of a mode switching clutch is equal to or less than a predetermined value during travel in a belt travel mode, there is a likelihood that the mode switching clutch would be secured to a lock mode in which power operating in two directions is transmitted. At this time, since switching to a gear travel mode is prohibited, it is possible to curb occurrence of a shock when power is simultaneously transmitted via a first power transmission path and a second power transmission path in a transition period of switching to the gear travel mode.

Description

technical field [0001] The present invention relates to a control device for a vehicle transmission that includes a first power transmission path and a second power transmission path in parallel. Background technique [0002] A vehicle transmission is known that is provided between a drive source and drive wheels and includes a first power transmission path and a second power transmission path in parallel. This is the case with the vehicle transmission described in Japanese Patent No. 5765485 (the vehicle power transmission device in Japanese Patent No. 5765485). In the vehicle transmission of Japanese Patent No. 5765485, a first clutch and a third clutch including dog clutches are provided on a first power transmission path, and a second clutch is provided on a second power transmission path. Furthermore, the power of the drive source is transmitted to the drive wheels via the first power transmission path or the second power transmission path by switching the engagement s...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F16H59/02F16H61/04
CPCF16H37/022F16H59/40F16H59/42F16H61/12F16H61/16F16H61/662F16H2061/1272F16H2061/161F16H59/48F16H61/702
Inventor 绫部笃志服部邦雄天野润藤田麻实
Owner TOYOTA JIDOSHA KK
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