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Power transmission device for vehicle

A power transmission device and power transmission technology, applied in control devices, vehicle components, hybrid vehicles, etc., can solve problems such as excessive stress, increased vibration and noise of the power transmission system, and reduced durability life.

Inactive Publication Date: 2021-05-21
HONDA MOTOR CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] However, when the power transmission system in the power transmission device, including the power transmission shaft, transmission gear, friction clutch, etc., enters the resonance region, the vibration and noise of the power transmission system will become larger, and excessive stress will be generated in each part. Causes of Decreased Durability Life of Various Parts

Method used

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  • Power transmission device for vehicle
  • Power transmission device for vehicle
  • Power transmission device for vehicle

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Experimental program
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Embodiment Construction

[0040] Embodiments of the present invention will be described below based on the drawings.

[0041] figure 1 It is a schematic diagram showing the basic structure of a power transmission device for a vehicle according to the present invention. The power transmission device 1 shown in the figure is installed in a hybrid vehicle (HEV vehicle) and includes an engine (ENG) 2 and a traction motor (TRC) as a drive source. 3. Furthermore, a generator motor (GEN) 4 is provided as a power generating unit.

[0042] The illustrated power transmission device 1 includes: an input shaft 6 connected to an output shaft (crankshaft) 2a of an engine 2 via a flywheel 5; Shaft 9. In addition, in this embodiment, as the flywheel 5, a flywheel not provided with a friction mechanism is used.

[0043] Two drive gears 10 and 11 are fixed to the input shaft 6, and a low-speed clutch 12 as a friction engagement unit is provided, and one drive gear 10 and a small-diameter driven gear 13 fixed to the g...

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PUM

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Abstract

The invention provides a power transmission device for a vehicle, which can prevent resonance of a power transmission system, suppress vibration and noise to be low, and prevent the endurance life of each component from being reduced. This power transmission device for a vehicle is provided with a low-speed clutch and a high-speed clutch that selectively engage / disengage a power transmission path for transmitting power from an engine to drive wheels to thereby switch the power transmission path, and is provided with: a misfire sensor and a rotation sensor; a resonance determination unit that determines whether or not there is a possibility that the power transmission system enters a resonance region on the basis of the engine misfire state detected by the misfire sensor and the engine rotation speed detected by the rotation sensor; and an ECU (control unit) that, when it is determined by the resonance determination unit that there is a possibility that the power transmission system enters the resonance region, puts the low-speed clutch or the high-speed clutch, which is in a disengaged state, in the low-speed clutch and the high-speed clutch into an engaged state (semi-engaged state).

Description

technical field [0001] The present invention relates to a power transmission device for a vehicle including a plurality of frictional engagement units in a power transmission path that transmits power from an engine to drive wheels. Background technique [0002] A power transmission device for a vehicle that uses an engine as a drive source is provided with a plurality of frictional engagement units for switching a power transmission path that transmits power from an engine to drive wheels by selectively engaging / disconnecting the power transmission path. Here, a hydraulically actuated friction clutch is generally used as the friction engagement means. [0003] However, when the power transmission system in the power transmission device, including the power transmission shaft, transmission gear, friction clutch, etc., enters the resonance region, the vibration and noise of the power transmission system will become larger, and excessive stress will be generated in each part. ...

Claims

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Application Information

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IPC IPC(8): F16F15/139F16F15/30F16D25/10B60K17/02
CPCF16F15/139F16F15/002F16F15/30F16H57/0006F16D25/10B60K17/02F16F2228/04F16F2230/0047F16F2230/18Y02T10/62
Inventor 尾梶智哉
Owner HONDA MOTOR CO LTD