Patent ID: 11965455
Assignee: WOODWARD, INC.
Field: Engines, pumps, turbines (Mechanical engineering)
Classification: CPC F  Y | IPC F

Claim 7:
8. A system for igniting a mixture in an internal combustion engine, the system comprising:
an igniter;
a main combustion chamber having a peripheral sidewall defining a center axis and comprising an elongate cylindrical chamber having a cylindrical wall, a piston of the internal combustion engine with a face at a first end, a cylinder head at a second end opposite the first end, a bowl defined in the face of the piston and having a bowl wall defining a volume having a center, and a gap defined between the cylinder head, the face of the piston, and the cylindrical wall;
a pre-combustion chamber centered on the center axis and enclosing a portion of the igniter, wherein a portion of a wall of the pre-combustion chamber extends into the bowl, and a portion of the bowl extends circumferentially around a portion of the wall of the pre-combustion chamber when the piston is configured at a top dead center position; and
a plurality of passages in a wall of the pre-combustion chamber, each passage fluidly connecting the pre-combustion chamber and the main combustion chamber and having a jet aperture proximal to the cylinder head away from the center of the defined volume and configured to direct a first portion of fluid flow from the passage along a periphery of the cylinder head through the gap to the peripheral sidewall more laterally than axially, and direct a second portion of fluid flow to a portion of the bowl wall adjacent the face and be redirected by the bowl wall along a periphery of the bowl wall.