Kathryn P Wolfe

US Patent:

20120053821, Mar 1, 2012

Filed:

Jun 24, 2011

Appl. No.:

13/168033

Inventors:

Kathryn Wolfe - Sterling Heights MI, US
Darrell W. Burleigh - South Lyon MI, US

Assignee:

GM GLOBAL TECHNOLOGY OPERATIONS LLC - Detroit MI

International Classification:

F02D 41/30
F01N 3/18
F01N 3/10
F02D 28/00
F01N 11/00

US Classification:

701105, 701102

Abstract:

An engine assembly includes a controller and at least one data storage medium storing a database. The database includes empirically-derived NOx values based on engine equivalence ratio and engine speed at predetermined reference conditions. The controller is configured to retrieve a NOx value from the database that corresponds to a measured value of the equivalence ratio and a measured value of the engine speed, and to modify the NOx value to compensate for differences between the reference conditions and the actual operating conditions of the engine assembly.

US Patent:

62863053, Sep 11, 2001

Filed:

Feb 23, 2000

Appl. No.:

9/511229

Inventors:

Mark J Poublon - Shelby Township MI
Kathryn A Wolfe - Sterling Heights MI

Assignee:

DaimlerChrysler Corporation - Auburn Hills MI

International Classification:

F01N 300

US Classification:

60285

Abstract:

A method for controlling the temperature of a catalyst in a catalytic converter. The method includes the steps of calculating a stabilized catalyst temperature limit, determining a stabilized catalyst temperature without enrichment, comparing the stabilized catalyst temperature limit with the stabilized catalyst temperature without enrichment and enriching a fuel/air ratio to maintain a stabilized catalyst temperature at the stabilized catalyst temperature limit if the stabilized catalyst temperature without enrichment is greater than the stabilized catalyst temperature limit. A vehicle having a controller for controlling the enrichment of an air/fuel ratio to control the temperature of a catalyst in a catalytic converter is also provided.

US Patent:

59350423, Aug 10, 1999

Filed:

May 18, 1998

Appl. No.:

9/080549

Inventors:

Christopher P. Thomas - West Bloomfield MI
Kathryn A. Wolfe - Sterling Heights MI
Bruce H. Teague - Grosse Pointe Park MI
O. Kent Thiel - Chelsea MI
Howard W. Krausman - Dexter MI

Assignee:

Chrysler Corporation - Auburn Hills MI

International Classification:

G06G 770

US Classification:

477110

Abstract:

A method is provided for adaptively determining a torque-related (K-factor) value for a torque converter in a vehicle and providing adaptive torque management to an automatic transmission. The torque-related K-factor value is computed for a given torque converter as a function of engine speed and difference in torque measured with the vehicle operating in idle neutral and drive. The vehicle dynamically learns the K-factor value and manages torque applied to the transmission by limiting the engine output speed as a function of the learned torque-related K-factor and vehicle speed.

US Patent:

20140297164, Oct 2, 2014

Filed:

May 14, 2013

Appl. No.:

13/893709

Inventors:

- Detroit MI, US
Kevin M. Luchansky - Sterling Height MI, US
Kathryn Wolfe - Sterling Heights MI, US
Frank Garthoff - Bad Duerkheim, DE

Assignee:

GM Global Technologies Operations LLC - Detroit MI

International Classification:

F02D 35/02

US Classification:

701111

Abstract:

A system includes a control module and a stochastic pre-ignition (SPI) module. The control module controls at least one performance parameter of an engine of a vehicle. The SPI module detects SPI events, determines a scaling factor based on the detected SPI events, and adjusts a limit associated with the at least one performance parameter based on the scaling factor. The control module controls the at least one performance parameter based on the limit.