Patent ID: 8800530
Filing Date: 2014-08-12
Classification: F02B,F02D,F02M,Y02T

Abstract:
1. An internal combustion engine, comprising: a combustion chamber at least partially defined within a cylinder bore by a reciprocating piston having a piston crown with a concave bowl, said concave bowl being offset with respect to a centerline of the reciprocating piston; an intake plenum; a first intake port; a second intake port disposed adjacent one diametrical end of a cross section of the combustion chamber; a fuel injector disposed in the second intake port and operable to deliver a preselected amount of fuel therein to mix with air from the intake plenum and form a rich air/fuel mixture; a first intake valve configured to selectively fluidly connect the intake plenum with the combustion chamber through the first intake port to provide one of air and a lean air/fuel mixture to the combustion chamber; a second intake valve configured to selectively fluidly connect the intake plenum with the combustion chamber through the second intake port to provide a stream of the rich air/fuel mixture to the combustion chamber, the second intake valve configured to actuate at a timing independent of the first intake valve; and an ignition device positioned in the combustion chamber, wherein the concave bowl is disposed adjacent to the one diametrical end of the combustion chamber, aligned with the second intake port, and disposed to directly receive therein the stream of the rich air/fuel mixture from the second intake port such that the concave bowl directs the rich air/fuel mixture towards the ignition device to create a stratified air/fuel mixture in the combustion chamber prior to combustion.