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:
Jan. 19, 2016
Filed:
Aug. 10, 2012
Joel Cowgill, White Lake, MI (US);
Joel Cowgill, White Lake, MI (US);
GM Global Technology Operations LLC, Detroit, MI (US);
Abstract
An engine control system for a vehicle includes a pressure determination module, an adjustment determination module, a target determination module, and a pump control module. The pressure determination module determines a first pressure for a hydraulic fluid provided to fully flexible intake and exhaust valve actuators of an engine. The adjustment determination module determines a pressure adjustment for the first pressure based on a pressure within a cylinder. The target determination module determines a target pressure for the hydraulic fluid based on the first pressure and the pressure adjustment. Based on the target pressure, the pump control module controls a hydraulic fluid pump for an opening timing of an exhaust valve of the cylinder.