David C Andres

US Patent:

6842689, Jan 11, 2005

Filed:

Apr 29, 2003

Appl. No.:

10/424846

Inventors:

David J. Andres - Washington IL, US
Craig W. Riediger - Cologny, CH
Donald E. Wilson - Bad Abbach, DE
John P. Timmons - Chillicothe IL, US
Timothy A. Lorentz - Morton IL, US

Assignee:

Caterpillar Inc - Peoria IL

International Classification:

G06G 770

US Classification:

701110, 123350, 731173, 73116, 340439, 701102, 701104, 701114, 701115

Abstract:

A method and system may be provided to perform a process for controlling power provided by an engine in a machine. In an embodiment of the present invention, a process for controlling power provided by an engine operating in a machine is provided. The process may include determining a first power value reflecting a predetermined first power to be provided by the engine to a component operating in the machine and determining, during machine operations, at least one of a parasitic load power value and an intermittent power load value. A second power value may then be determined that reflects a second power provided by the engine based on the parasitic power value, the intermittent power value, and the net power value. The second power value is adjusted such that the engine substantially provides the predetermined net power to the component.

US Patent:

6965826, Nov 15, 2005

Filed:

Jun 11, 2003

Appl. No.:

10/459638

Inventors:

David J. Andres - Washington IL, US
Gregory D. Hoenert - Metamora IL, US
Thomas J. Crowell - Peoria IL, US
George E. Donaldson - Chillicothe IL, US

Assignee:

Caterpillar Inc - Peoria IL

International Classification:

F02D045/00

US Classification:

701115

Abstract:

Electronically controlled internal combustion engines are operated based upon control calibration algorithms that can come in a variety of forms, including maps, equations, surfaces and other mathematical techniques. Each combination of a control calibration algorithm and a particular engine must satisfy certain constraints such as customer acceptance and value demands, and should have the ability to perform a variety of expected duty cycles for the given engine application. A plurality of different engine control calibration algorithms are made available to an engine control system. Each of the engine calibration algorithms corresponds to a particular duty cycle while being optimized for a performance parameter such as reduced emissions, while meeting a variety of constraints.