Patent ID: 6394056
Filing Date: 2002-05-28
Classification: F02B,F02F,Y02T

Abstract:
An internal combustion engine comprising: a cylinder having a longitudinal axis and being defined by a wall; a piston reciprocable within the cylinder, a cylinder head closing the top of the cylinder, an inlet valve mounted in the cylinder head, the inlet valve having a longitudinal axis; an inlet valve seat against which the inlet valve closes; means for reciprocating the inlet valve in the direction of its longitudinal axis into and out of engagement with the inlet valve seat; an exhaust valve mounted in the cylinder head, the exhaust valve having a longitudinal axis; an exhaust valve seat against which the exhaust valve closes; means for reciprocating the exhaust valve into and out of engagement with the exhaust valve seat; means secured to the cylinder head for producing a fuel/air mixture for combustion in the cylinder; and an inlet port connecting the fuel/air mixture producing means to the inlet valve seat to supply a mixture of fuel and air from the fuel/air mixture producing means to the cylinder, the inlet port being an unobstructed passage having a longitudinal axis which intersects the longitudinal axis of the inlet valve, wherein a side angle of the inlet port is greater than 60Â° and wherein the longitudinal axis of the inlet valve is located nearer to the longitudinal axis of the cylinder than to the wall of the cylinder.