The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Aug. 16, 2005
Filed:
May. 14, 2002
Jason Kenneth Bloms, Peoria, IL (US);
James J. Faletti, Spring Valley, IL (US);
Scott Alan Leman, Eureka, IL (US);
David Andrew Pierpont, Peoria, IL (US);
James Richard Weber, Lacon, IL (US);
Jason Kenneth Bloms, Peoria, IL (US);
James J. Faletti, Spring Valley, IL (US);
Scott Alan Leman, Eureka, IL (US);
David Andrew Pierpont, Peoria, IL (US);
James Richard Weber, Lacon, IL (US);
Caterpillar Inc, Peoria, IL (US);
Abstract
A method of controlling an engine is provided. At least one operating parameter of the engine is sensed. The engine is operated in a first mode in response to the sensed operating parameter being at one of a predetermined first set of conditions. In the first mode, a cam assembly moves an intake valve from a first position when a piston starts an intake stroke and the cam assembly returns the intake valve to the first position when the piston completes the intake stroke. The engine is operated in a second mode in response to the sensed operating parameter being at one of a predetermined second set of conditions. In the second mode, the cam assembly moves the intake valve from the first position when the piston starts an intake stroke and an actuator prevents the intake valve from returning to the first position in response to the cam assembly.