Patent · US Active

Method and apparatus for securing an operating range state mechanical transmission

US8099219B2 · kind B2 · utility

1Cited by

3References

12Claims

0Family size

Assignees

GM GLOBAL TECHNOLOGY OPERATIONS LLC · US
Daimler AG · DE
Chrysler Group LLC · US
Bayerische Motoren Werke Aktiengesellschaft · DE

Inventors

Hanne Buur · Brighton, US
Lawrence A. Kaminsky · Sterling Heights, US

Key dates

Filing date	Oct 3, 2008
Grant date	Jan 17, 2012
Priority date	—
Expiry date	Nov 6, 2030

Classification

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

Abstract

A hybrid powertrain system includes a transmission operative in a plurality of operating range states. An operating range state can be secured, including assigning each operating range state to a group that can be verified, monitoring a transition path from a first to a second operating range state, and monitoring a torque equation for the present operating range state.

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