Christopher W Gauthier

US Patent:

20150039192, Feb 5, 2015

Filed:

Jul 30, 2013

Appl. No.:

13/954829

Inventors:

- Erlanger KY, US
Christopher T. Gauthier - Torrance CA, US

Assignee:

Toyota Motor Engineering & Manufacturing North America, Inc. - Erlanger KY

International Classification:

B60W 10/06
B60W 10/10

US Classification:

701 54

Abstract:

A system for improving performance of a hybrid vehicle at higher elevations. The system includes a plurality of wheels, an engine, an altitude sensor, a transmission, a memory for storing target engine speeds, and a processor. The engine provides a torque to the plurality of wheels through the transmission, based on gear ratios limited by a wide open throttle (WOT) guard. The altitude sensor determines an elevation of the vehicle. Above a certain threshold elevation, the processor changes the WOT guard to improve performance at lower gears, such as standing start performance.