James R Yurgil

US Patent:

6370469, Apr 9, 2002

Filed:

Jun 13, 2000

Appl. No.:

09/592831

Inventors:

Tam Anh Phung - Stanford CA
Ronald C. Allison - Clio MI
James R. Yurgil - Livonia MI
Thomas Eugene Bolander - Flint MI

Assignee:

General Motors Corporation - Detroit MI

International Classification:

G06F 1700

US Classification:

701 93, 180172

Abstract:

A method of controlling a cruise control system, comprising the steps of: assigning a low lateral acceleration limit; assigning a high lateral acceleration limit; determining a lateral acceleration of a vehicle; comparing the lateral acceleration to the low and high lateral acceleration limits; monitoring a torque command of a torque control computer at least where the lateral acceleration is above the low lateral acceleration limit; and compensating the torque command by setting the torque command equal to a minimum torque command where the lateral acceleration is between the low and high lateral acceleration limits and the torque command increases.

US Patent:

6436712, Aug 20, 2002

Filed:

May 21, 2001

Appl. No.:

09/862765

Inventors:

James R. Yurgil - Livonia MI
Guy E. LaFalce - Romeo MI

Assignee:

General Motors Corporation - Detroit MI

International Classification:

G01N 3508

US Classification:

436 55, 422 98, 422 62, 422 83, 422108, 422117, 422119, 436 68, 436134, 74866, 123396

Abstract:

A method and apparatus according to the present invention monitors an emission gas, such as a carbon monoxide gas, from an emission source, such as a carbon monoxide source, by periodically sensing a concentration level of emission gas, such as carbon monoxide, in ambient air and generating a signal corresponding to the sensed concentration level of the emission gas. In response to the signal, a percent blood concentration value of the emission gas is determined. The calculated blood concentration value is compared to a threshold value, and if greater than the threshold value, the source of emission gas, such as carbon monoxide gas, is disabled. The blood concentration value can be determined on a predetermined time interval, and at least in part, can be based on a prior blood concentration value in combination with a current blood concentration value.

US Patent:

6510377, Jan 21, 2003

Filed:

May 21, 2001

Appl. No.:

09/862222

Inventors:

Tam A. Phung - Sunnyvale CA
Ronald C. Allison - Clio MI
James R. Yurgil - Livonia MI
Xiaowen Dai - Farmington MI
Thomas E. Bolander - Flint MI

Assignee:

General Motors Corporation - Detroit MI

International Classification:

G06F 1900

US Classification:

701117, 701119, 701 35, 340439

Abstract:

A method for continuously predicting the type of traffic in which a vehicle is traveling. The traffic pattern can be used in other vehicle control systems as an input to determine how to adjust system parameters, such as control loop proportional and integral gain calibrations. Vehicle speed is sampled over a variable number of sampling intervals, defining a prediction period. The prediction period varies as a function of distance traveled, and is limited for conditions where the distance interval is not reached within a particular time interval. When the prediction period is reached, average vehicle speed and speed variation over the period are determined. A lookup table incorporating average speed and speed variation is used to determine the traffic pattern. The prediction period can be shortened to quickly recognize transitions from city or highway traffic pattern.

US Patent:

6874313, Apr 5, 2005

Filed:

Feb 18, 2003

Appl. No.:

10/368894

Inventors:

James R. Yurgil - Livonia MI, US
John M. Gunselman - Farmington Hills MI, US

Assignee:

General Motors Corporation - Detroit MI

International Classification:

F01N003/00

US Classification:

60277, 60274, 60276, 60285, 123198 F

Abstract:

An engine exhaust system includes a catalytic converter. An inlet sensor senses a first oxygen level of exhaust gases entering the catalytic converter. An outlet sensor senses a second oxygen level of exhaust gases exiting the catalytic converter. A controller communicates with a fuel system of an engine, the inlet sensor, and the outlet sensor. The controller initiates a rich condition after a fuel cut-off period and calculates a mass of oxygen released by the catalytic converter based on a mass air flow into the engine. The controller calculates a target oxygen storage capacity (OSC) of the catalytic converter over a target time period.

US Patent:

6882928, Apr 19, 2005

Filed:

Apr 8, 2003

Appl. No.:

10/409512

Inventors:

James R. Yurgil - Livonia MI, US

Assignee:

General Motors Corporation - Detroit MI

International Classification:

G06F019/00

US Classification:

701114, 123691, 60274

Abstract:

Methods and apparatus are provided for diagnosing emissions in a multi-banked catalyst emissions system for a motor vehicle. A method of diagnosing emissions in a multi-banked emissions system suitably includes obtaining an emissions measurement for each bank in the multi-banked emissions system, converting the emissions measurements to scaled values, adding the scaled values to obtain a total emission value, and triggering an indication if the total emission value exceeds a pre-determined maximum. A system for processing emissions from an engine in a motor vehicle typically includes multiple exhaust banks and a processor. Each of the exhaust banks includes a catalytic converter and at least one oxygen sensor. The processor receives measurements from the oxygen sensors, converts the measurements to scaled values as a percentage of a threshold value, computes a total emission value from the scaled values, and triggers an indication if the total emission value exceeds the threshold value.

US Patent:

7007856, Mar 7, 2006

Filed:

Mar 4, 2003

Appl. No.:

10/378786

Inventors:

Guy E. La Falce - Sterling Heights MI, US
James R. Yurgil - Livonia MI, US
Joel J. Anderson - Davison MI, US

Assignee:

General Motors Corporation - Detroit MI

International Classification:

B60H 1/02

US Classification:

237 123B, 165 41, 165 42

Abstract:

An extended engine off passenger climate control system utilizes an advanced temperature control module in combination with modifications to the conventional heating/ventilation/air conditioning (HVAC) system to provide occupants in the passenger cabin of a hybrid electric motor vehicle with adequate heat or air conditioning for up to two minutes after the gasoline engine is turned off. A two stage orifice between the condenser and the evaporator of the air conditioning system slows the equilibration of the pressures on the high pressure side and low pressure side of the air conditioning system when the air conditioner compressor is turned off, allowing the passenger cabin to continue receiving cooling air even when the gasoline engine, and thus the compressor, is off. An auxiliary engine coolant pump circulates heated engine coolant through the heater core when the gasoline engine is turned off, thus providing heat when conditions require passenger cabin heating.

US Patent:

7051859, May 30, 2006

Filed:

Aug 27, 2002

Appl. No.:

10/229187

Inventors:

James R. Yurgil - Livonia MI, US
David Gordon Evans - Rochester MI, US

Assignee:

General Motors Corporation - Detroit MI

International Classification:

B60K 41/26

US Classification:

1922192

Abstract:

The hill-holding mechanism of the present invention comprises an apparatus and methodology for actuating a transmission control element to prevent the output shaft of an automatic transmission in a hybrid vehicle from rotating under certain predetermined circumstances.

US Patent:

7081761, Jul 25, 2006

Filed:

Jul 14, 2004

Appl. No.:

10/891474

Inventors:

James R. Yurgil - Livonia MI, US

Assignee:

General Motors Corporation - Detroit MI

International Classification:

G01R 31/12
G01N 27/416

US Classification:

324548, 324426, 324427, 324430, 324434

Abstract:

Methods and apparatus are provided for projecting the useful life Yof an ultracapacitor undergoing at least one ON period after an OFF period. The apparatus comprises sensors coupled to the ultracapacitor for measuring the instantaneous voltage V(t) and temperature T(t) thereof as a function of time t, and a measuring system coupled to the sensors, the measuring system receiving V(t), T(t) and computing Ybased at least in part on combining values of the instantaneous ultracapacitor life Y(V(t),T(t))=10where a, b and c are constants, for different values of t. The measuring system preferably includes program, temporary and non-volitile memory, a processor, a timer and an I/O for communicating with the sensors and other vehicle systems. In a preferred embodiment, values of V(t), T(t) at the beginning and end of the OFF period are also used in determining Y.