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:
Nov. 03, 2009
Filed:
Oct. 16, 2006
Andreas M. Lippert, Rochester Hills, MI (US);
Ronald M. Otto, Rochester Hills, MI (US);
Scott E. Parrish, Farmington Hills, MI (US);
Arun S. Solomon, Rochester Hills, MI (US);
Ansis Upatnieks, Ann Arbor, MI (US);
Yangbing Zeng, Rochester Hills, MI (US);
Andreas M. Lippert, Rochester Hills, MI (US);
Ronald M. Otto, Rochester Hills, MI (US);
Scott E. Parrish, Farmington Hills, MI (US);
Arun S. Solomon, Rochester Hills, MI (US);
Ansis Upatnieks, Ann Arbor, MI (US);
Yangbing Zeng, Rochester Hills, MI (US);
GM Global Technology Operations, Inc., Detroit, MI (US);
Abstract
A method and article of manufacture are provided to operate a spray-guided, spark-ignition, direct fuel injection engine, including injecting a first fuel pulse during a combustion cycle, and initiating spark ignition by energizing a spark igniter. A second fuel pulse is injected during the combustion cycle effective to form an ignitable fuel-air mixture proximal to the spark igniter during a period in time whereat the spark igniter is energized. A preferred elapsed time between an end of the first fuel pulse and start of the spark ignition is determined based upon engine load.