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Control apparatus and method for lock-up clutch of vehicle

A technology for locking clutches and control equipment, applied in clutches, mechanical equipment, transmission control and other directions, can solve problems such as fuel efficiency decline and engine power waste, achieve the effect of improving fuel economy or efficiency and avoiding sharp changes

Inactive Publication Date: 2004-12-01
TOYOTA JIDOSHA KK
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

For example, if a torque greater than the torque transfer carrying capacity of the hydrodynamic transmission is to be transmitted from the engine to the device, the torque is only used to increase the engine speed, thereby wasting engine power and reducing fuel efficiency

Method used

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  • Control apparatus and method for lock-up clutch of vehicle
  • Control apparatus and method for lock-up clutch of vehicle
  • Control apparatus and method for lock-up clutch of vehicle

Examples

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Embodiment Construction

[0027] An exemplary embodiment of the present invention will be described in detail below with reference to the accompanying drawings. FIG. 1 shows a drive system 10 of a vehicle using a control device according to an embodiment of the present invention. The drive system 10 for a FF (Front Engine Front Drive) vehicle includes a transversely mounted automatic transmission 16 and an engine 12 serving as a power source for vehicle travel. The power of an internal combustion engine serving as the engine 12 is transmitted to the left and right drive via a torque converter 14 serving as a hydraulic transmission, an automatic transmission 16, a differential (gear) transmission (not shown) and a pair of half shafts. wheel.

[0028] The torque converter 14 includes a pump wheel 14p connected to the crankshaft of the engine 12, a turbine wheel 14t connected to the input shaft 32 of the automatic transmission 16, and a guide wheel 14s connected to a transmission case housing 36 via a on...

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PUM

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Abstract

In a vehicle having a hydraulic power transmitting device equipped with a lock-up clutch on an output side of the engine, a control apparatus for controlling the lock-up clutch is provided which includes a lock-up clutch control unit that places the lock-up clutch in a slipping state when the vehicle is started so that torque received from the engine is transmitted to a later-stage transmission via the lock-up clutch as well as the hydraulic power transmitting device.

Description

field of invention [0001] The present invention generally relates to an apparatus and method for controlling a lock-up clutch of a vehicle, and more particularly to a method for transferring a portion of the torque generated by an engine to a vehicle through a lock-up clutch and a hydraulic transmission when the vehicle is started. The technology of the rear stage transmission ensures that the fuel economy of the vehicle is further improved. Background technique [0002] In a known vehicle, a hydrodynamic transmission is used, which includes a lock-up clutch directly coupled to the input and output rotating members of the device, the output torque of the engine passing through the lock-up clutch The hydrodynamic transmission is transmitted to the input shaft of the automatic transmission. The fluid transmission device such as a fluid coupling or a torque converter transmits power with a fluid such as hydraulic fluid or hydraulic oil between an impeller connected to the engi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F16H59/36F16H59/46F16H59/54F16H61/14
CPCF16H61/143F16H2059/183F16H2059/467F16H2059/363F16H2061/145F16H59/36F16H2312/02F16H59/54
Inventor 大岛康嗣木村弘道武内博明渡辺和之近藤贵裕绫部笃志河村达哉佐川步杉村敏夫奥田弘一
Owner TOYOTA JIDOSHA KK
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