Patent · US Active

Method for controlling a powertrain and a transmission system

US9008929B1 · kind B1 · utility

0Cited by

1References

20Claims

0Family size

Assignee

GM GLOBAL TECHNOLOGY OPERATIONS LLC · US

Inventors

Martin Gentile · Gerolzhofen, DE
Armin Mueller · Stuttgart, DE

Key dates

Filing date	Sep 26, 2013
Grant date	Apr 14, 2015
Priority date	—
Expiry date	Oct 19, 2033

Classification

Technology area (CPC Y)Emerging Cross-Sectional Technologies
CPC primaryY02T10/60
WIPO fieldTransport
WIPO sectorMechanical engineering

Abstract

A method for controlling a powertrain includes the following steps: (a) determining whether a vehicle is coasting to a stop based on an accelerator pedal position; (b) determining whether an automatic transmission is in first gear; (c) shifting an input clutch from an engaged state to a disengaged state in order to operatively disconnect the automatic transmission from an internal combustion engine if the vehicle is coasting to a stop and the automatic transmission is not in first gear; and (d) shifting the automatic transmission to the first gear in order to allow the internal combustion engine to be shut down while the vehicle is coasting to a stop.

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