Air and fuel supply system for combustion engine

摘要

A method of operating an internal combustion engine (110), including at least one cylinder (112) and a piston (212) slidable in the cylinder, may include supplying pressurized air from an intake manifold (114) to an air intake port (208) of a combustion chamber (206) in the cylinder, selectively operating an air intake valve (214) to open the air intake port to allow pressurized air to flow between the combustion chamber and the intake manifold substantially during a majority portion of a compression stroke of the piston, and operably controlling a fuel supply system (202) to inject fuel into the combustion chamber after the intake valve is closed.