Patent ID: 8069835
Filing Date: 2011-12-06
Classification: F02M

Abstract:
1. A method of operating an internal combustion engine comprising the steps of: injecting a liquid fuel into a combustion chamber of the engine, which is an engine cyclinder with a diameter less than about 3 inches, in an engine cycle via first set of outlet orifices but not a second set of outlet orifices; injecting a liquid fuel into the combustion chamber via a second set of outlet orifices but not the first set in an engine cycle, the second set of outlet orifices having an average minimum cross sectional flow area less than an average minimum cross sectional flow area of the first set, the average minimum cross sectional flow area of the second set being between about 0.002 square millimeters and about 0.01 square millimeters; compression igniting the injected fuel; and burning the injected fuel to yield a brake mean effective pressure of at least about 200 pounds per square inch.