Patent · US Active

Method and apparatus for detecting engine firing in a hybrid powertrain system

US8214095B2 · kind B2 · utility

1Cited by

3References

11Claims

0Family size

Assignee

GM GLOBAL TECHNOLOGY OPERATIONS LLC · US

Inventors

Allen Lehmen · Howell, US
Kevin J. Smith · Youngwood, US
James Nicholson · Adelaide, AU

Key dates

Filing date	May 27, 2009
Grant date	Jul 3, 2012
Priority date	—
Expiry date	Sep 11, 2030

Classification

Technology area (CPC Y)Emerging Cross-Sectional Technologies
CPC primaryY02T10/62
WIPO fieldTransport
WIPO sectorMechanical engineering

Abstract

A method for controlling a hybrid powertrain system includes commanding engine operation to transition from an engine-off state to an engine-on state. A control scheme detects engine firing based upon input speed, input torque and a change in the input torque.

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