Title:
CONTROL OF SELECTABLE ONE-WAY CLUTCH IN A TRANSMISSION
Document Type and Number:
WIPO Patent Application WO/2010/030535
Kind Code:
A3
Abstract:
A powertrain in a vehicle includes an electro-mechanical transmission having a selectable one-way clutch mechanically-operatively coupled to an internal combustion engine and configured to selectively transmit mechanical power to an output member. A control method includes monitoring a vehicle speed, monitoring a transmission gear state, comparing the vehicle speed to a threshold low speed range, transitioning a selectable one-way clutch into an engaged mode when said vehicle speed is not in a forward direction in excess of the threshold low speed range, and maintaining the selectable one-way clutch in the engaged mode based upon the transmission gear state remaining in a first gear state and the vehicle speed remaining within said threshold low speed range, a neutral state, or a reverse state.
Inventors:
LEE CHUNHAO J (US)
SAMIE FARZAD (US)
KAO CHI-KUAN (US)
SAMIE FARZAD (US)
KAO CHI-KUAN (US)
Application Number:
PCT/US2009/055641
Publication Date:
June 03, 2010
Filing Date:
September 02, 2009
Export Citation:
Assignee:
GM GLOBAL TECH OPERATIONS INC (US)
International Classes:
F16H61/02; F16D41/00; F16D48/00; F16H61/00
Foreign References:
| US20070099758A1 | 2007-05-03 | |||
| US20080149067A1 | 2008-06-26 | |||
| EP1944520A2 | 2008-07-16 |
Attorney, Agent or Firm:
CICHOSZ, Vincent, A. (PLLC129 E. Commerce Stree, Milford MI, US)
Download PDF: