Inventors:
Michael Pozar - Cupertino CA, US
Robert Stein - Saline MI, US
Jeff C. Lyjak - Ann Arbor MI, US
Marcus W. Fried - Farmington Hills MI, US
Thomas G. Leone - Ypsilanti MI, US
Assignee:
Ford Global Technologies, LLC - Dearborn MI
International Classification:
F02P 5/15
F02D 43/04
US Classification:
12340647, 12340655, 12340659, 60285
Abstract:
A system and method to control spark timing of an engine wherein the injection timing of the engine is varied relative to a crankshaft position depending on engine operating conditions. According to the method, spark timing is varied as fuel injection timing varies for at least a portion of the engine operating range. The method can reduce fuel consumption, reduce transient fuel requirements, improve engine performance, and reduce CO emissions, at least under some conditions.