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:
Mar. 07, 2006
Filed:
Dec. 04, 2003
Chun Tai, Hagerstown, MD (US);
Timothy A. Suder, Greencastle, PA (US);
Walter Curtis Jacques, Smithsburn, MD (US);
Benjamin C. Shade, Masontown, WV (US);
Chun Tai, Hagerstown, MD (US);
Timothy A. Suder, Greencastle, PA (US);
Walter Curtis Jacques, Smithsburn, MD (US);
Benjamin C. Shade, Masontown, WV (US);
Mack Trucks, Inc., Allentown, PA (US);
Abstract
A valve actuation system and method for use in an internal combustion engine including at least one combustion cylinder having a piston and an engine valve. The valve actuation system includes a hydraulic pump, a high-pressure reservoir, and an electro-hydraulic valve actuator. The hydraulic pump is configured to produce a hydraulic output based on a valve-piston clearance profile of at least one cylinder of the combustion engine. The high-pressure reservoir is coupled with the hydraulic pump. The electro-hydraulic valve actuator is coupled with the high-pressure reservoir via a first control valve and configured to actuate at least one engine valve of the combustion engine according to an output of the hydraulic pump.