Glen F Chatfield

US Patent:

6512974, Jan 28, 2003

Filed:

Feb 20, 2001

Appl. No.:

09/792010

Inventors:

Roy D. Houston - Bethel Park PA
Glen F. Chatfield - Bradfordwoods PA

Assignee:

Optimum Power Technology - Bridgeville PA

International Classification:

F02D 4102

US Classification:

701115, 123486, 307 101

Abstract:

An engine management system for an internal combustion engine. The engine management system comprises an engine control system calculating an engine operating control value, a palm-size computer transportable relative to the engine control system, and an external computer communicating with the palm-size computer. The engine operating control value is adapted to be supplied to the internal combustion engine to vary engine performance. The palm-size computer has height, width, and thickness dimensions that are no larger than approximately 6 inches by approximately 4 inches by approximately 1 inch. The palm-size computer runs a set of engine management tools that communicate engine management data to the engine control system. The external computer downloads to the palm-size computer engine management tools and engine management files, and uploads from the palm-size computer engine management files.

US Patent:

6539299, Mar 25, 2003

Filed:

Feb 16, 2001

Appl. No.:

09/784336

Inventors:

Glen F. Chatfield - Bradfordwoods PA
Roy D. Houston - Bethel Park PA
Philip D. McDowell - Canonsburg PA

Assignee:

Optimum Power Technology - Bridgeville PA

International Classification:

F02D 4304

US Classification:

701104, 701115

Abstract:

A method and control apparatus for an internal combustion engine that allows an operator to calibrate engine performance relative to an engine operating characteristic. The control apparatus comprises a base engine control map that correlates values of the characteristic with values of a base engine control, a trim control map that correlates the values of the characteristic with values of a trim control, an engine control unit that obtains from the base engine control and trim control maps the respective base engine control and trim control values that are based on the characteristic value, and a panel that is operatively coupled with the engine control unit and includes a first switch regulating a trim signal supplied to the engine control unit. The trim control map is separated from the base control map. The engine control unit calculates an engine operating control value based on the obtained values.

US Patent:

6701897, Mar 9, 2004

Filed:

Jul 20, 2001

Appl. No.:

09/909679

Inventors:

Glen F. Chatfield - Bradfordwoods PA

Assignee:

Optimum Power Technology - Bridgeville PA

International Classification:

F02M 100

US Classification:

123438, 123492, 123493

Abstract:

An apparatus and method for adjusting a quantity of fuel delivered to an engine when an engine operating state transitions is provided. The apparatus and method includes determining a current steady-state quantity of fuel to be delivered to the engine and add a transitory quantity of fuel, based on a difference between a previous steady-state quantity of fuel delivered and the current steady-state quantity of fuel to be delivered, to the current steady-state quantity of fuel for a period of time following initiation of the transition. The invention also provides an apparatus and method by which an operator may adjust the amount of fuel delivered during an engine operating state transition.

US Patent:

6883501, Apr 26, 2005

Filed:

Feb 15, 2003

Appl. No.:

10/368701

Inventors:

Glen F. Chatfield - Bradfordwoods PA, US
Malcolm C. Ashe - Upper St. Clair PA, US

Assignee:

Optimum Power Technology - Bridgeville PA

International Classification:

F02M043/00

US Classification:

123527, 123470, 123525

Abstract:

A throttle and fuel injector assembly and method of controlling fuel and air supply to an engine. The assembly and method provide combustion air through a carburetor and fuel through a carburetor.

US Patent:

7031823, Apr 18, 2006

Filed:

Sep 16, 2003

Appl. No.:

10/663862

Inventors:

Glen F. Chatfield - Bradfordwoods PA, US
Roy D. Houston - Bethel Park PA, US

Assignee:

OPTIMUM Power Technology L.P. - Bridgeville PA

International Classification:

G05D 1/00
F02M 51/00
B60T 7/12

US Classification:

701104, 701 32, 701114, 701115, 123488, 123486, 731182

Abstract:

A signal conditioning device, user interface, and method of conditioning a signal. The signal conditioning device includes a processor, a first input coupled to the processor and an output coupled to the processor. Instructions are stored within the processor that, when executed by the processor, cause the processor to provide a signal incident at the output that corresponds to a signal incident at the input.

US Patent:

7051722, May 30, 2006

Filed:

Jan 18, 2005

Appl. No.:

11/038668

Inventors:

Dale K. Wells - Eighty Four PA, US
Glen F. Chatfield - Bradfordwoods PA, US

Assignee:

OPTIMUM Power Technology L.P. - Bridgeville PA

International Classification:

F02B 1/00

US Classification:

123578, 123478

Abstract:

A system, an apparatus, and a method for starting an engine. The system, apparatus, and method include determining a first quantity of fuel based on engine temperature, providing the first quantity of fuel to the engine during a first cycle of the engine, determining a second quantity of fuel based on engine temperature, providing the second quantity of fuel to the engine subsequently, and transitioning to an alternative fueling strategy.

US Patent:

7162357, Jan 9, 2007

Filed:

Jan 17, 2006

Appl. No.:

11/333014

Inventors:

Glen F. Chatfield - Bradfordwoods PA, US
Roy D. Houston - Bethel Park PA, US

Assignee:

Optimum Power Technology - Bridgeville PA

International Classification:

G06D 1/99
F02M 51/00
B60T 7/12
G06F 19/00
G01M 19/00

US Classification:

701104, 701105, 701114, 701115, 123486, 123488, 731182

Abstract:

A signal modifying device, user interface, and method of modifying a signal. The signal modifying device includes a processor, a first input coupled to the processor and an output coupled to the processor. Instructions are stored within the processor that, when executed by the processor, cause the processor to provide a signal incident at the output that corresponds to a signal incident at the input.

US Patent:

7198041, Apr 3, 2007

Filed:

Mar 30, 2006

Appl. No.:

11/393515

Inventors:

Dale K. Wells - Eighty Four PA, US
Glen F. Chatfield - Bradfordwoods PA, US

Assignee:

Optimum Power Technology - Bridgeville PA

International Classification:

F02B 1/00
F02B 2/00

US Classification:

123578, 123478

Abstract:

A system, an apparatus, and a method for starting an engine. The system, apparatus, and method include determining a first quantity of fuel based on engine temperature, providing the first quantity of fuel to the engine during a first cycle of the engine, determining a second quantity of fuel based on engine temperature, providing the second quantity of fuel to the engine subsequently, and transitioning to an alternative fueling strategy.