Power transmission device

A power transmission device and power transmission technology, applied in the direction of power device, transmission device control, arrangement of multiple different prime movers of general power device, etc., can solve problems such as clutch impact, achieve impact suppression, mitigation of impact, and responsiveness good effect

Active Publication Date: 2011-10-12
TOYOTA JIDOSHA KK
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This type of clutch may cause a shock during eng

Method used

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Examples

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Example Embodiment

[0033] [Example]

[0034] according to Figure 1~Figure 11 An embodiment of the power transmission device of the present invention will be described. The power transmission device and the vehicle on which it is mounted will be described below.

[0035] figure 1 The symbol 1 denotes a hybrid vehicle. The hybrid vehicle is an example of a vehicle to which the power transmission device of this embodiment is applied. It has a mechanical power source powered by mechanical energy and a vehicle powered by mechanical energy obtained by converting electrical energy. Electrical power source.

[0036] The hybrid vehicle 1 has an engine 10 that outputs mechanical power (engine torque) from an output shaft (crankshaft) 11 as a mechanical power source. As this engine 10, an internal combustion engine, an external combustion engine, etc. can be considered. The operation of the engine 10 is controlled by an engine control unit of an electronic control unit for the engine (hereinafter referred to...

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Abstract

Provided are a clutch (30) which is operated by a pressure of supplied fluid and which adjusts a power transmission state of an engine (10) and/or a motor/generator (20) on a power transmission path, a first drive pump (51) which is driven in accordance with rotations of the motor/generator (20) and supplies fluid to the clutch (30), and a second drive pump (52) which is driven by an electric power and supplies fluid to the clutch (30), wherein, by selecting either the first drive pump (51) or the second drive pump (52) as a supply soured of the fluid, a first engagement portion (31) and a second engagement portion (32) can be engaged at various speeds, and when there is a request for driving the clutch (30) and the number of revolutions of the motor/generator (20) is lower than a predetermined number of revolutions, the fluid is supplied from the second drive pump (52); for quick engagement of the first engagement portion (31) and the second engagement portion (32).

Description

technical field [0001] The present invention relates to a power transmission device that transmits power from a power source to a drive wheel side. Background technique [0002] Patent Document 1 below discloses a hybrid vehicle provided with an engine and a motor generator as a power source, and a power transmission device that transmits the power of the power source to the driving wheel side. The power transmission device of this Patent Document 1 includes a clutch capable of disconnecting and connecting power transmission between the engine and a motor generator, and a clutch capable of disconnecting and connecting when changing a gear stage in an automatic transmission. In addition, this hybrid vehicle is provided with a mechanical oil pump and an electric oil pump for supplying oil pressure to the automatic transmission. This mechanical oil pump is driven by the power of the engine when the motor generator fails, and supplies part of the oil pressure to the electric oi...

Claims

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Application Information

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IPC IPC(8): B60W10/10B60W10/30B60W20/00F16H61/02B60L50/16B60W10/115
CPCB60K6/48B60K2006/4825B60W10/02B60W10/06B60W10/08B60W10/115B60W20/00B60W2510/108F16H61/0025F16H61/0031B60Y2300/45F16H2312/14B60W2510/081B60W2710/023B60W2710/30B60W2510/0241B60W20/40B60W2520/10B60W10/11Y02T10/62Y02T10/72B60W20/50B60W10/026
Inventor 吉川雅人
Owner TOYOTA JIDOSHA KK
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