1
Trent J Cleveland, Thomas J Crowell: Method and system for controlling fuel injector pulse width based on fuel temperature. Caterpillar, Robert J Hampsch, February 2, 1999: US05865158 (29 worldwide citation)

A method and system for controlling the injection of fuel across a plurality of fuel injectors coupled together along a fuel rail in an internal combustion engine is provided. The method and system involve producing a reference fuel delivery control signal for each of the fuel injectors as a functio ...


2
David J Andres, Gregory D Hoenert, Thomas J Crowell, George E Donaldson: Engine control strategies. Caterpillar, Liell & McNeil, November 15, 2005: US06965826 (23 worldwide citation)

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 sa ...


3
Thomas J Crowell, Douglas E Wilson: Blow-by gas evacuation and oil reclamation. Caterpillar, Eric M Bram, Keith P Roberson, August 28, 2001: US06279555 (8 worldwide citation)

Air laden with oil and blow-by gases is evacuated from an engine compartment such as a crankcase. The air is cleaned by removing oil and may be reused for engine combustion by routing it through a turbocharger inlet. The reclaimed oil may be returned to an oil pan for reuse in engine lubrication.


4
Ralph E Cain Jr, Thomas J Crowell: Digital panel meter. R T Engineering Service, Wolf Greenfield & Sacks, June 5, 1979: US04157501 (6 worldwide citation)

The meter is primarily adapted to replace a standard analog panel meter and is designed to selectively receive different ranges of input signals such as DC input signals in ranges extending from 50 mVDC to 500 VDC. In the disclosed embodiment there are four ranges also adapted to receive AC input si ...


5
Thomas J Crowell, David Andrew Pierpont: System and method for controlling engine operation. Caterpillar, Finnegan Henderson Farabow Garrett & Dunner, October 5, 2004: US06799552 (5 worldwide citation)

A system for operating an internal combustion engine includes an intake valve moveable between a first position at which fluid is blocked from flowing to or from the cylinder and a second position at which fluid is allowed to pass to or from the cylinder. The system includes a fluid actuator selecti ...


6
Steven J Funke, Jason K Bloms, Thomas J Crowell, Scott A Leman, James R Weber, Jeff Skorupski, Tom Genise, Rich Nellums, Daniel G Smedley, Donald Speranza: Efficiency based integrated power train control system. Caterpillar, Eaton Corporation, K&L Gates, March 16, 2010: US07678015 (3 worldwide citation)

A power train control system for a mobile machine is disclosed. The power train control system has a power source configured to produce a power output, a transmission device operatively connected to receive the power output and propel the mobile machine, and a control module. The control module is c ...


7
David A Pierpont, Thomas J Crowell: Variable valve actuation control for operation at altitude. Caterpillar, Finnegan Henderson Farabow Garrett & Dunner, June 28, 2005: US06912458 (1 worldwide citation)

A method of controlling a variable valve actuation system for an engine is provided. A cam assembly is operated to move an intake valve between a first position and a second position. A parameter indicative of an altitude at which the engine is operating is sensed. A first lookup map is accessed to ...


8
Thomas J Crowell, David Andrew Pierpont: System and method for controlling engine operation. Finnegan Henderson Farabow Garrett & Dunner, March 25, 2004: US20040055564-A1 (1 worldwide citation)

A system for operating an internal combustion engine includes an intake valve moveable between a first position at which fluid is blocked from flowing to or from the cylinder and a second position at which fluid is allowed to pass to or from the cylinder. The system includes a fluid actuator selecti ...


9
Thomas J Crowell: System and method of changing engine performance curves to manage heat generation. Caterpillar, Leydig Voit & Mayer, July 3, 2012: US08214115

A system and method for managing the heat produced by operation of an internal combustion system utilizes an electronic controller to control operation the engine that is coupled to a transmission. The transmission can include a high drive ratio and a low drive ratio. Stored in the controller are a ...


10
D Andy Pierpont, Thomas J Crowell: Engine valve actuation system and method for controlling white smoke. Caterpillar, May 23, 2006: US07047920

The present invention provides a method and apparatus for controlling an intake engine valve capable of variable closing timing. A condition indicative of white smoke production is determined. An intake engine valve is closed at a first crank angle for a given engine operating condition when the con ...