Patent · US Active

Method and apparatus to detect a mode-gear mismatch during operation of an electro-mechanical transmission

US8393996B2 · kind B2 · utility

0Cited by

6References

5Claims

0Family size

Assignee

GM GLOBAL TECHNOLOGY OPERATIONS LLC · US

Inventors

Ryan D. Martini · Royal Oak, US
Charles J. Van Horn · Novi, US
Peter E. Wu · Brighton, US
Andrew M. Zettel · Ann Arbor, US
Osama Almasri · Novi, US
Jy-Jen F. Sah · Beverly Hills, US

Key dates

Filing date	Oct 21, 2011
Grant date	Mar 12, 2013
Priority date	—
Expiry date	Oct 21, 2031

Classification

Technology area (CPC Y)Emerging Cross-Sectional Technologies
CPC primaryY10S477/904
WIPO fieldTransport
WIPO sectorMechanical engineering

Abstract

A vehicular powertrain includes an electro-mechanical transmission mechanically-operatively coupled to an internal combustion engine. A method for operating the powertrain includes monitoring operator inputs, monitoring a transmission output, and terminating an engine operating mode when a time-rate change in the transmission output exceeds a threshold absent a change in the monitored operator inputs.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.