Patent ID: 7832381
Filing Date: 2010-11-16
Classification: F02D,F02M,Y02T

Abstract:
1. A method of operating an internal combustion engine, the method which comprises: operating the internal combustion engine with carburetor fuel by injecting the carburetor fuel directly into at least one combustion space of the internal combustion engine by way of at least one fuel injector; selectively operating the internal combustion engine with gas instead of injecting the carburetor fuel or in addition to injecting the carburetor fuel; continuously determining a mixture adaptation value while the internal combustion engine is operated with carburetor fuel; storing a current mixture adaptation value in a memory while the internal combustion engine is being operated with carburetor fuel; after a predetermined minimum operating duration with gas, comparing a current mixture adaptation value with a stored mixture adaptation value during the operation of the internal combustion engine with carburetor fuel; and if a difference between the current mixture adaptation value and the stored mixture adaptation value overshoots a predetermined differential value, scavenging the at least one fuel injector.