Gregory B Weber

US Patent:

55379770, Jul 23, 1996

Filed:

Jan 30, 1995

Appl. No.:

8/380865

Inventors:

Peter G. Hartman - Bloomfield MI
Keith L. Jones - Woodhaven MI
Thomas A. Larson - Bloomfield Hills MI
Gregory T. Weber - Commerce Township MI

Assignee:

Chrysler Corporation - Auburn Hills MI

International Classification:

F02P 514

US Classification:

123422

Abstract:

A method of estimating exhaust gas recirculation in an intake manifold for an internal combustion engine includes the steps of determining a volumetric efficiency value of the intake manifold, determining whether a speed of the engine is accelerating, getting a manifold unfilling constant if the speed of the engine is not accelerating, getting a manifold filling constant if the speed of the engine is accelerating, calculating a K-factor based on the volumetric efficiency value and either the manifold filling constant or manifold unfilling constant, and using the K-factor to modify spark of the engine.

US Patent:

6085734, Jul 11, 2000

Filed:

Dec 15, 1998

Appl. No.:

9/211939

Inventors:

Kenneth P. DeGroot - Macomb Township MI
Bruce H. Teague - Grosse Pointe Park MI
Gregory T. Weber - Commerce Township MI
Jeremy M. Smith - Farmington MI

Assignee:

Chrysler Corporation - Auburn Hills MI

International Classification:

F02D 4114

US Classification:

123696

Abstract:

A method is provided for controlling the delivery of fuel to an engine of an automotive vehicle equipped with a dynamic crankshaft fuel control system and an oxygen sensor feedback based fuel control system. The method includes determining an averaged combustion metric from the dynamic crankshaft fuel control system. The combustion metric is compared to an allowable engine roughness value and a dynamic crankshaft fuel control fuel multiplier is adjusted based on the comparison via a proportional-integral-derivative control calculation. Thereafter, the integral term of the dynamic crankshaft fuel control system's proportional-integral-derivative control calculation is stored. If it is time to switch fuel control from the dynamic crankshaft fuel control system to the oxygen sensor feedback fuel control system, the stored integral term of the dynamic crankshaft fuel control system's fueling multiplier is transferred to the proportional-integral-derivative calculation of the oxygen sensor feedback fuel control system. As such, the last integral term used in determining the fuel multiplier of the dynamic crankshaft fuel control system is used as the first integral term determining the fuel multiplier of in the oxygen sensor feedback fuel control system. As such, the transition from one fuel control system to the other is smoothed.

US Patent:

62375806, May 29, 2001

Filed:

Aug 19, 1999

Appl. No.:

9/377320

Inventors:

Kenneth P. DeGroot - Macomb Township MI
Mark J. Duty - Davison MI
Gregory T. Weber - Commerce Township MI

Assignee:

DaimlerChrysler Corporation - Auburn Hills MI

International Classification:

F02B 7508

US Classification:

123698

Abstract:

A fuel control system is provided for enhancing the fueling strategy of a vehicle at start up when fueling is being supplemented with purge vapors from the fuel tank. The system includes monitoring the purge vapor flow rate from the purge vapor control system to the engine at start-up. A dynamic crankshaft fuel control fuel multiplier is then calculated based on engine roughness. If the engine is operating rough during purge vapor fueling, the amount of injected fuel is adjusted according to the fuel multiplier. Once oxygen sensor feedback is available, the dynamic crankshaft fuel control fuel multiplier is recalculated based on the oxygen sensor goal voltage. If necessary, the amount of injected fuel may be readjusted with the updated fuel multiplier. Once the engine is warm, the purge vapor fueling stops and the present methodology ends.

US Patent:

59016841, May 11, 1999

Filed:

Sep 14, 1998

Appl. No.:

9/152762

Inventors:

John Fiaschetti - Rochester Hills MI
Kenneth DeGroot - Macomb Township MI
Mark Borland - Birmingham MI
Gregory Weber - Commerce Township MI

Assignee:

DaimlerChrysler Corporation - Auburn Hills MI

International Classification:

F02D41/04

US Classification:

123436

Abstract:

A methodology of computing a learned combustion stability value and applying the learned combustion stability value to control engine operation is provided. Engine speed is sensed for each expected firing of individual cylinders ofthe engine. An expected acceleration value is determined using a band-pass-filtered engine speed difference. The difference between successive expected acceleration values is computed. A learned combustion related value is determined as a function of the difference in the successive learned acceleration values and is an indication of engine combustion quality. The operation of the engine is controlled as a function of the learned combustion related value. The learned combustion stability value is advantageously employed so as to modify the fuel injection to an internal combustion engine, especially following a cold engine start so as to reduce hydrocarbon emissions. This is accomplished by modifying a program target fuel injection value as a function of the learned combustion related value so as to reduce the fuel injected into the engine by fuel injectors.

US Patent:

58099697, Sep 22, 1998

Filed:

Jul 29, 1997

Appl. No.:

8/901859

Inventors:

John Fiaschetti - Warren MI
Kenneth P. DeGroot - Macomb Township MI
Mark S. Borland - Birmingham MI
Gregory T. Weber - Commerce Township MI

Assignee:

Chrysler Corporation - Auburn Hills MI

International Classification:

F02D 4104

US Classification:

123436

Abstract:

A methodology of computing a learned combustion stability value and applying the learned combustion stability value to control engine operation is provided. Engine speed is sensed for each expected firing of individual cylinders of the engine. The difference in engine speed for a selected cylinder firing and a cylinder firing occurring two cylinder firings earlier is determined to provide an expected acceleration value. The difference between successive expected acceleration values is computed. A learned combustion related value is determined as a function of the difference in the successive learned acceleration values and is an indication of engine roughness. The operation of the engine is controlled as a function of the learned combustion related value. The learned combustion stability value is advantageously employed so as to modify the fuel injection to an internal combustion engine, especially following a cold engine start so as to reduce hydrocarbon emissions. This is accomplished by modifying a program target fuel injection value as a function of the learned combustion related value so as to reduce the fuel injected into the engine by fuel injectors.

US Patent:

52339629, Aug 10, 1993

Filed:

Apr 30, 1992

Appl. No.:

7/876633

Inventors:

Francis M. Fodale - Beverly Hills MI
Gregory J. Dykstra - Grosse Pointe Woods MI
Robert E. Lee - West Bloomfield MI
Gregory T. Weber - Farmington Hills MI
James M. Witalec - Westland MI
James T. Wyrembelski - Fraser MI

Assignee:

Chrysler Corporation - Highland Park MI

International Classification:

F02P 514

US Classification:

123425

Abstract:

A method is provided for controlling knock on an internal combustion engine. The method includes the steps of determining a maximum value of knock and determining whether conditions are right for updating the maximum value of knock. The method also includes using an unmodified spark advance if conditions are not right for updating the maximum value of knock and modifying the spark advance if conditions are right for updating the maximum value of knock.

US Patent:

54270820, Jun 27, 1995

Filed:

May 4, 1994

Appl. No.:

8/238123

Inventors:

Christopher P. Thomas - Rochester Hills MI
Gregory T. Weber - Commerce Township MI
Glen E. Tallarek - Grosse Pointe Woods MI
Michael T. Vincent - Novi MI

Assignee:

Chrysler Corporation - Highland Park MI

International Classification:

F02B 2300

US Classification:

123675

Abstract:

A method of proportional deceleration fuel lean-out for an internal combustion engine includes the steps of sensing a throttle position of a throttle for the engine with a throttle position sensor, calculating a throttle proportional deceleration fuel lean-out multiplier (LOTHR) value based on the sensed throttle position, sensing a manifold absolute pressure (MAP) of an intake manifold for the engine with a MAP sensor, calculating a MAP proportional deceleration fuel learn-out multiplier (LOMAP) value based on the sensed MAP, combining the LOTHR and LOMAP values and calculating an overall proportional deceleration fuel lean-out multiplier (LOMULT) value, and applying the calculated LOMULT value to a fuel pulsewidth value of fuel injectors for the engine and reducing the amount of fuel injected into the engine by the fuel injectors.

US Patent:

54270707, Jun 27, 1995

Filed:

May 4, 1994

Appl. No.:

8/238093

Inventors:

Christopher P. Thomas - Rochester Hills MI
Gregory T. Weber - Commerce Township MI
Glen E. Tallarek - Grosse Pointe Woods MI

Assignee:

Chrysler Corporation - Highland Park MI

International Classification:

F02M 5100

US Classification:

123488

Abstract:

A method of averaging coolant temperature for an internal combustion engine in an automotive vehicle includes the steps of sensing coolant temperature of the engine based on an output signal of a coolant temperature sensor, determining an initial value of coolant temperature based on the output signal from the coolant temperature sensor, storing the determined initial value as an initial coolant temperature value (CLTMP1) and as an averaged coolant temperature value (AVCT), periodically updating the AVCT value, and using the AVCT value to control the output of fuel injectors of the engine.