Stratified charge port injection engine and method

摘要

An internal combustion engine (100) includes a combustion chamber (210) at least partially defined within a cylinder bore (204) by a reciprocating piston (202) having a piston crown. An intake plenum (120) is fluidly connectable with the combustion chamber (210) and at least one intake port (116) is configured to fluidly connect the intake plenum (120) with the combustion chamber (210). At least one intake valve (122) is configured to selectively fluidly connect the intake plenum (120) with the combustion chamber (210). The combustion chamber (210) is configured to receive a lean air/fuel mixture therein to substantially fill the combustion chamber (210). The combustion chamber (210) is further configured to receive a rich air/fuel mixture therein that yields a stratified total air/fuel mixture within the combustion chamber (210).