초록 ▼

A number of combustion chamber configurations for direct injected engines wherein the fuel injectors inject at least two fuel patches in circumferentially spaced locations. This fuel is injected into a cavity arrangement formed in the head of the piston, which directs the fuel upwardly toward a pair

A number of combustion chamber configurations for direct injected engines wherein the fuel injectors inject at least two fuel patches in circumferentially spaced locations. This fuel is injected into a cavity arrangement formed in the head of the piston, which directs the fuel upwardly toward a pair of circumferentially spaced spark plugs so as to insure complete combustion within the combustion chamber. Embodiments having single and paired cavities in the piston head are disclosed.

대표청구항 ▼

1. An internal combustion engine comprised of an engine body defining at least one cylinder bore in closed at one end by a cylinder head surface and at the other end by the head of a piston reciprocating in said cylinder bore, a fuel injector mounted in said engine body contiguous to the axis of sai

1. An internal combustion engine comprised of an engine body defining at least one cylinder bore in closed at one end by a cylinder head surface and at the other end by the head of a piston reciprocating in said cylinder bore, a fuel injector mounted in said engine body contiguous to the axis of said cylinder bore and configured to spray fuel downwardly toward said piston head in at least two circumferentially spaced fuel injection directions, said piston head being formed with a cavity arrangement having at least two circumferentially spaced, concave curved wall portions that curve upwardly toward said cylinder head surface at their radially outer extent, the circumferential spacing of said fuel injection directions corresponding to the circumferential spacing of said piston concave, curved wall portions so that the fuel spray from said fuel injector is directed toward said piston concave, curved wall portions, and a pair of circumferentially spaced ignition devices in said cylinder head surface in proximity to the upper ends of said piston concave, curved wall portions for igniting the fuel sprayed from said fuel injector.