Mark S Borland

US Patent:

6357226, Mar 19, 2002

Filed:

Oct 22, 1998

Appl. No.:

09/177314

Inventors:

Mark Borland - Troy MI

Assignee:

Chrysler Corporation - Auburn Hills MI

International Classification:

F01H 300

US Classification:

60298, 60286, 60295, 60300, 60303

Abstract:

A control system is described for optimizing the reduction of nitrogen oxides in exhaust gas produced by an internal combustion engine, especially those internal combustion engines that employ a lean air-fuel ratio. The control system employs a temperature control assembly that is capable of selectively heating the exhaust gas prior to introduction into the NO catalyst system, thus rapidly bringing the temperature of the NO catalyst system up to operating temperature.

US Patent:

57352461, Apr 7, 1998

Filed:

Sep 30, 1996

Appl. No.:

8/723400

Inventors:

Michael T. Vincent - Novi MI
Mark S. Borland - Birmingham MI
Kim A. Morehouse - Stockbridge MI
James R. Tamm - Ann Arbor MI

Assignee:

Chrysler Corporation - Auburn Hills MI

International Classification:

F02D 4114

US Classification:

123436

Abstract:

A system is provided for controlling the ratio of fuel to air in an internal combustion engine to protect the catalyst substrate of a catalytic convertor from thermal damage. The system comprises detecting a misfire rate and adjusting the amount of fuel within the system accordingly. More particularly, the detected misfire rate is compared to at least one predetermined misfire rate within the engine control unit. If the detected misfire rate is not equal to the predetermined rate, the ratio of fuel to air is changed a calibrated amount. Accordingly, when the misfire rate exceeds a predetermined rate, additional fuel is added to the system. By increasing the ratio of fuel to air, the oxidation reaction is reduced and the exothermic activity within the catalytic converter is lowered.

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:

55424031, Aug 6, 1996

Filed:

Nov 18, 1994

Appl. No.:

8/342297

Inventors:

Mark S. Borland - Birmingham MI
Bruce H. Teague - Grosse Pointe Park MI

Assignee:

Chrysler Corporation - Highland Park MI

International Classification:

F02D 4114

US Classification:

123686

Abstract:

A method of determining start of closed-loop fuel control for an internal combustion engine including the steps of determining a base fuel pulsewidth threshold, ascertaining whether a current accumulated base fuel pulsewidth is greater than or equal to the base fuel pulsewidth threshold, updating the current accumulated base fuel pulsewidth with a value of a previous accumulated base fuel pulsewidth plus the current base fuel pulsewidth if the current accumulated base fuel pulsewidth is not greater than or equal to the base fuel pulsewidth threshold, and beginning a closed loop fuel control of a plurality of fuel transferring components if the current accumulated base fuel pulsewidth is greater than or equal to the base fuel pulsewidth threshold.

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:

60558105, May 2, 2000

Filed:

Aug 14, 1998

Appl. No.:

9/134110

Inventors:

Mark S. Borland - Troy MI
Thomas W. Asmus - Oakland MI
Frank Zhao - Lake Orion MI

Assignee:

Chrysler Corporation - Auburn Hills MI

International Classification:

F02D 2300
F02M 2507
F02P 515

US Classification:

60600

Abstract:

A fuel control system for an engine utilizing direct fuel injection including a smoke sensor for measuring the level of smoke in the engine exhaust. A control module, in response to the output signal from the smoke sensor, regulates the timing and delivery of fuel to the engine, the delivery of air to the engine, the amount of exhaust gases that are recirculated to the engine, the turbo boost pressure and performs on-board diagnostics.