Michael D Arnett

US Patent:

8565949, Oct 22, 2013

Filed:

Sep 14, 2010

Appl. No.:

12/881271

Inventors:

Anthony Christman - Madison Heights MI, US
Shaochun Ye - Wixom MI, US
Michael Arnett - Wixom MI, US

Assignee:

GM Global Technology Operations LLC - Detroit MI

International Classification:

B60L 15/20
B60W 20/00

US Classification:

701 22, 701 335, 701 314, 701 292, 701 64, 180 6523, 180 65245, 477109

Abstract:

A method includes determining an amount of power currently available from a battery for tractive torque as an amount of power stored in the battery less an amount of power required to power other vehicle components, and less an amount of power required to start the engine. An output torque limit when torque is provided only by the motor and power required to provide the output torque limit are determined based on test data. A maximum output torque is calculated by multiplying the amount of power determined to be currently available for tractive torque by a ratio of the output torque limit to the amount of power required to provide the output torque limit. The current output torque may be reduced at a predetermined rate until within a predetermined range of the lesser of the maximum output torque and the output torque limit if an engine start is requested.

US Patent:

8573181, Nov 5, 2013

Filed:

Sep 23, 2009

Appl. No.:

12/565297

Inventors:

Michael Arnett - Wixom MI, US
Christopher E. Whitney - Highland MI, US
Per Andersson - Linkoping, SE
Justin A. Zaydel - Ludington MI, US

International Classification:

F02D 41/00

US Classification:

123361

Abstract:

A throttle control system includes a pressure comparison module and a throttle plate control module. The pressure comparison module determines an inlet pressure upstream from a throttle body and an outlet pressure downstream from the throttle body. The throttle plate control module controls a position of a throttle plate based on the inlet pressure and the outlet pressure.

US Patent:

20120059539, Mar 8, 2012

Filed:

Feb 17, 2011

Appl. No.:

13/029381

Inventors:

Michael Arnett - Wixom MI, US
Alexander K. Rustoni - Oxford MI, US
Sean W. McGrogan - Ann Arbor MI, US
Goro Tamai - West Bloomfield MI, US

Assignee:

GM GLOBAL TECHNOLOGY OPERATIONS LLC - Detroit MI

International Classification:

B60L 15/20
B60L 11/18
F16H 59/18

US Classification:

701 22, 180 65285, 903903

Abstract:

A method for managing a threshold increase in output torque capability in a vehicle includes detecting the threshold increase in output torque capability using a controller, and automatically limiting, via the controller, a rate of change of an actual output torque from a transmission of the vehicle in response to the threshold increase. The actual output torque is provided via a traction motor solely using battery power from an energy storage system. The method may include calculating a difference between the threshold increase and the actual output torque, and limiting the rate of change using a rate that is proportional to the difference. A vehicle includes the ESS, a transmission, and a controller. An output member of the transmission is powered using electrical energy from the ESS. The controller manages an increase in output torque capability as noted above.

US Patent:

20130015803, Jan 17, 2013

Filed:

Jul 14, 2011

Appl. No.:

13/183318

Inventors:

MICHAEL ARNETT - WIXOM MI, US
STEVEN E. SCHULZ - TORRANCE CA, US
BON HO BAE - TORRANCE CA, US
SILVA HITI - REDONDO BEACH CA, US
RONGHUI LI - TORRANCE CA, US

Assignee:

GM GLOBAL TECHNOLOGY OPERATIONS LLC - DETROIT MI

International Classification:

H02P 3/06

US Classification:

318503

Abstract:

Methods, system and apparatus are provided for reducing power loss in an electric motor drive system that includes an electric machine and an inverter module. A controller determines whether a torque command (T) is less than a minimum torque threshold (T) that is required to disable the inverter module, and if so, increments a counter and determines whether the torque command (T) remains less than the minimum torque threshold (T). When the torque command (T) remains less than the minimum torque threshold (T), the controller checks to determine whether a current count value (n) maintained at the counter is greater than a count threshold (n), and if so, the controller can generate a disable signal to disable switching within the inverter module.