David M Farmer

Author:

David W. Farmer

ISBN #:

0821804502

Author:

David W. Farmer

ISBN #:

0821804510

Author:

David H. Farmer

ISBN #:

0273022423

Author:

David H. Farmer

ISBN #:

0273405063

Author:

David H. Farmer

ISBN #:

0521280419

Author:

David H. Farmer

ISBN #:

0434919101

Author:

David H. Farmer

ISBN #:

0470254998

Author:

David H. Farmer

ISBN #:

0716100401

US Patent:

6467259, Oct 22, 2002

Filed:

Jun 19, 2001

Appl. No.:

09/884563

Inventors:

Gopichandra Surnilla - West Bloomfield MI
David George Farmer - Plymouth MI

Assignee:

Ford Global Technologies, Inc. - Dearborn MI

International Classification:

F01N 300

US Classification:

60285, 60274, 60286, 60297

Abstract:

An exhaust gas treatment system for an internal combustion engine includes a pair of upstream emission control devices which respectively receive the exhaust gas generated by a respective group of cylinders, and a single, shared downstream emission control device receiving catalyzed exhaust gas from each of the upstream emission control devices. After the downstream device stores a selected constituent gas generated when each cylinder group is operating âlean,â the downstream device is purged by operating the first cylinder group with a stoichiometric air-fuel mixture while operating the second cylinder group with a rich air-fuel mixture, such that the combined catalyzed exhaust gas flowing through the downstream device during the purge event has an air-fuel ratio slightly rich of stoichiometry. As a result, the invention improves overall vehicle fuel economy because only one of the upstream devices is purged of stored oxygen when purging the downstream device of previously-stored constituent gas.

US Patent:

6604504, Aug 12, 2003

Filed:

Jun 19, 2001

Appl. No.:

09/884383

Inventors:

Gopichandra Surnilla - West Bloomfield MI
David George Farmer - Plymouth MI

Assignee:

Ford Global Technologies, LLC - Dearborn MI

International Classification:

F02B 1700

US Classification:

123295, 123443, 123673

Abstract:

An exhaust treatment system for an internal combustion engine includes a catalytic emission control device. When transitioning the engine between a lean operating condition and a stoichiometric operating condition, as when scheduling a purge of the downstream device to thereby release an amount of a selected exhaust gas constituent, such as NO , that has been stored in the downstream device during the lean operating condition, the air-fuel ratio of the air-fuel mixture supplied to each cylinder is sequentially stepped from an air-fuel ratio of at least about 18 to the stoichiometric air-fuel ratio. The purge event is preferably commenced when all but one cylinders has been stepped to stoichiometric operation, with the air-fuel mixture supplied to the last cylinder being stepped immediately to an air-fuel ratio rich of a stoichiometric air-fuel ratio.

US Patent:

6735937, May 18, 2004

Filed:

Oct 5, 2001

Appl. No.:

09/971453

Inventors:

Gopichandra Sumilla - Westland MI
Jing Sun - Bloomfield MI
David George Farmer - Plymouth MI
Ilya V. Kolmanovsky - Ypsilanti MI

Assignee:

Ford Global Technologies, LLC - Dearborn MI

International Classification:

F01N 300

US Classification:

60274, 60285, 60286, 123 9015, 123443, 123692

Abstract:

A control method for an internal combustion engine has multiple cylinder groups with at least one control device positioned between an intake manifold and a cylinder group. The engine operates the cylinder groups at different air/fuel ratio and uses the control device to balance torque produced by the different cylinder groups. In one aspect of the invention, one cylinder group is operated rich and another cylinder group is operated lean thereby providing heat to an exhaust system located downstream of the engine.

US Patent:

7300381, Nov 27, 2007

Filed:

Nov 30, 2002

Appl. No.:

10/307234

Inventors:

Edward Badillo - Flat Rock MI, US
Ace K. Kue - Franklin MI, US
David Oshinsky - Trenton MI, US
David George Farmer - Plymouth MI, US
Donald Fenwick Dickison - Sterling Heights MI, US

Assignee:

Ford Global Technologies, LLC - Dearborn MI

International Classification:

F16H 59/74

US Classification:

477102, 477101, 477105, 477107, 477109

Abstract:

A method and system for controlling output torque of an internal combustion engine during a gearshift in an automatic shift manual transmission coupled to the engine is disclosed. The transmission includes a multiplicity of gears and a clutch actuated by a transmission control unit (TCU), which controls clutch disengagement, gear change, and clutch re-engagement. The engine includes an engine control unit in communication with the TCU. The method includes determining engine operator demanded engine torque; sending a signal to the engine control unit in response to actuation of the clutch; and, computing in the engine control unit in response to the sent clutch actuation signal and the determined engine operator demanded engine torque, a control signal for the engine, such engine, in response to such control signal changing engine torque during the gear change to substantially match demanded engine torque when the clutch is re-engaged.

US Patent:

7891340, Feb 22, 2011

Filed:

Apr 30, 2008

Appl. No.:

12/113078

Inventors:

Gopichandra Surnilla - West Bloomfield MI, US
David George Farmer - Plymouth MI, US
Davor David Hrovat - Ann Arbor MI, US

Assignee:

Ford Global Technologies, LLC - Dearborn MI

International Classification:

F02D 41/06
F02M 37/04

US Classification:

123457, 12317917, 123504, 701113

Abstract:

A method for operating a fuel delivery system with a first pressure pump fluidly coupled to a second higher pressure pump is described. In one example, the fuel pumps are adjusted based on measured fuel pressure during a first condition. The fuel pumps are adjusted independent of the measured fuel pressure during a second condition.

US Patent:

54047188, Apr 11, 1995

Filed:

Sep 27, 1993

Appl. No.:

8/127152

Inventors:

Daniel V. Orzel - Westland MI
Tri T. Truong - Inkster MI
David G. Farmer - Plymouth MI

Assignee:

Ford Motor Company - Dearborn MI

International Classification:

F01N 320

US Classification:

60274

Abstract:

A control system which controls engine air/fuel ratio while providing a measurement of efficiency in the catalytic converter coupled to the engine exhaust. A test period is completed when counts in transitions of a feedback variable derived from an exhaust gas oxygen sensor positioned upstream of the converter have reached a preselected count for each of a plurality of inducted air flow ranges. Converter efficiency is determined during the test cycle by comparing an integration of the feedback variable, after band pass filtering and rectification, to an integration of a downstream exhaust gas oxygen sensor after its output is band pass filtered and rectified.

US Patent:

63248352, Dec 4, 2001

Filed:

Oct 18, 1999

Appl. No.:

9/419755

Inventors:

Gopichandra Surnilla - Westland MI
Jing Sun - Bloomfield MI
David George Farmer - Plymouth MI
Ilya V. Kolmanovsky - Ypsilanti MI

Assignee:

Ford Global Technologies, Inc. - Dearborn MI

International Classification:

F01N 300

US Classification:

60274

Abstract:

A control method for an internal combustion engine has multiple cylinder groups with at least one control device positioned between an intake manifold and a cylinder group. The engine operates the cylinder groups at different air/fuel ratios and uses the control device to balance torque produced by the different cylinder groups. In one aspect of the invention, one cylinder group is operated rich and another cylinder group is operated lean thereby providing heat to an exhaust system located downstream of the engine.

US Patent:

61893161, Feb 20, 2001

Filed:

May 19, 1999

Appl. No.:

9/315223

Inventors:

Gopichandra Surnilla - Westland MI
David George Farmer - Plymouth MI

Assignee:

Ford Global Technologies, Inc. - Dearborn MI

International Classification:

F01N 300

US Classification:

60274

Abstract:

A nitrous oxide trap temperature control system for desulfating the trap uses and engine with some cylinders operating with lean combustion and some cylinders operating with rich combustion. The lean and rich combustion gases are combined to form an mixture which is fed to the trap to provide an exothermic reaction. The desired lean and rich air/fuel ratios of the respective lean and rich cylinders are limited depending on trap temperature and incremental heat addition to prevent inadvertently decreasing trap temperature.