Patent · US Active

Dynamic hysteresis evaluation method for hybrid vehicles based on optimal power loss control strategy

US8116925B2 · kind B2 · utility

3Cited by

0References

19Claims

0Family size

Assignee

GM GLOBAL TECHNOLOGY OPERATIONS LLC · US

Inventors

Jian Min Wang · Nanhu, CN
Eric M. Rask · Chicago, US
Chihang Lin · Ann Arbor, US

Key dates

Filing date	Feb 24, 2009
Grant date	Feb 14, 2012
Priority date	—
Expiry date	Aug 15, 2030

Classification

Technology area (CPC Y)Emerging Cross-Sectional Technologies
CPC primaryY02T10/64
WIPO fieldTransport
WIPO sectorMechanical engineering

Abstract

A hybrid control system comprises a power loss (PL) determination module, a hysteresis estimation module, and a mode determination module. The PL determination module determines a power loss of a hybrid drivetrain based on an engine speed, a motor speed, and a vehicle speed. The hysteresis estimation module determines an average power loss of the hybrid drivetrain based on the power loss and determines a hysteresis power loss of the hybrid drivetrain based on the average power loss. The mode determination module selects an operation mode of the hybrid drivetrain based on the hysteresis power loss. The hybrid control system controls the hybrid drivetrain based on the operation mode.

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