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:
Feb. 22, 2011
Filed:
Apr. 29, 2009
Hanho Yun, Oakland Township, MI (US);
Nicole Wermuth, Ann Arbor, MI (US);
Barry L. Brown, Lake Orion, MI (US);
Jun-mo Kang, Ann Arbor, MI (US);
Paul M. Najt, Bloomfield Hills, MI (US);
Hanho Yun, Oakland Township, MI (US);
Nicole Wermuth, Ann Arbor, MI (US);
Barry L. Brown, Lake Orion, MI (US);
Jun-Mo Kang, Ann Arbor, MI (US);
Paul M. Najt, Bloomfield Hills, MI (US);
GM Global Technology Operations LLC, Detroit, MI (US);
Abstract
A method for controlling a homogeneous-charge compression-ignition capable engine, operating with spray-guided spark ignition stratified combustion at low load, includes monitoring a speed of the engine, monitoring a load of the engine, determining a desired fuel pressure based upon the speed of the engine and the load of the engine, and utilizing the desired fuel pressure to control fuel injection into the engine, wherein the desired fuel pressure is calibrated to the speed and the load based upon increased stability of the engine at lower fuel pressures and lower soot emissions from the engine at higher fuel pressures.