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Clutch slip recovery system and method

A torque converter clutch and slip technology, applied in the field of torque converter clutch adjustment system, can solve the problems of increase, large TCC pressure command, insufficient quick recovery of slip, etc.

Active Publication Date: 2011-08-03
GM GLOBAL TECH OPERATIONS LLC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, this approach can result in a TCC pressure command that is too large, which results in an excessive increase in slip that reduces fuel economy
Alternatively, the TCC pressure command may be too small, which causes the slip to not recover quickly enough

Method used

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  • Clutch slip recovery system and method
  • Clutch slip recovery system and method
  • Clutch slip recovery system and method

Examples

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Embodiment Construction

[0061] The following description is merely exemplary in nature, and is not intended to limit the disclosure, application, or uses.

[0062] refer to figure 1 , schematically illustrates an exemplary powertrain 10 and includes a prime mover or engine 12 driving a transmission 14 through a coupling 16 . The coupling device 16 is any fluid coupling, such as a torque converter, that transfers drive torque from the engine 12 to the transmission 14 . The transmission 14 multiplies the drive torque by the desired gear ratio to provide the varied drive torque. The altered drive torque is transferred through the transmission output shaft 20 to a vehicle driveline (not shown). The coupling device 16 includes a torque converter clutch (TCC) 22 selectively engageable to provide direct drive between the engine 12 and the transmission 14 . The powertrain 10 also includes a hydraulic control system 24 having a hydraulic fluid source 30 , a pump 33 and a controller device 32 . The control...

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Abstract

The invention relates a clutch slip recovery system and a method. In particular, a system and a method for transferring torque from a prime mover to a transmission include a coupling device, a hydraulic control system and a control module. The coupling device includes a torque converter clutch (TCC), wherein the coupling device is located between an output of the prime mover and an input of the transmission. The TCC is actuated between a fully engaged position, a slip mode where slip occurs, and a fully disengaged position. The hydraulic control system includes a controller device that communicates an actuation pressure to the TCC. The actuation pressure actuates the TCC between the fully engaged position, the slip mode, and the fully disengaged position. The controller is in communication with the TCC, the output of the prime mover, the input of the transmission, and the controller device of the hydraulic control system. The controller regulates the actuation pressure.

Description

[0001] Cross References to Related Applications [0002] This application claims priority to US Provisional Application No. 61 / 299,736, filed January 29, 2010, which is hereby incorporated by reference in its entirety. technical field [0003] The present disclosure relates to torque converter clutch (TCC) trim systems and methods, and more particularly to TCC trim systems and methods that pressurize the TCC at two different pressure levels. Background technique [0004] The statements in this section merely provide background information related to the present disclosure and may or may not constitute prior art. [0005] A vehicle powertrain typically includes a prime mover, such as an internal combustion engine, a transmission, and a coupling that transfers drive torque from the prime mover to the transmission. The coupling device may be a torque converter that provides a fluid coupling and adjusts slip between the output shaft of the prime mover and the input shaft of the...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F16H61/00F16H59/14F16H61/14G16Z99/00
CPCG06F19/00G16Z99/00B60W20/40
Inventor P.G.奥塔尼斯C.J.李X.陈
Owner GM GLOBAL TECH OPERATIONS LLC
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