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. 13, 2009
Filed:
Jul. 17, 2007
Gerald T. Fattic, Fishers, IN (US);
Gerald T. Fattic, Fishers, IN (US);
Delphi Technologies, Inc., Troy, MI (US);
Abstract
An Engine Control Module includes an electronic controller for controlling the position of an EGR valve, the timing of opening and closing of the engine combustion valves, and the timing of the individual cylinder fuel injectors of an engine. Each engine cylinder includes a pressure sensor. Peak cylinder pressure is sent to the ECM during each firing cycle. The ECM is programmed with required maximum percentages of EGR and optimal combustion valve timing for each engine operating condition, and sets the EGR valve and/or the camshaft phaser accordingly to adjust combustion in all the engine cylinders. The ECM also compares the measured peak pressure for each cylinder and adjusts the timing of fuel injection for the next firing cycle to trim the measured peak pressure in each cylinder to a predetermined level at or below the maximum allowable peak firing pressure for the engine.