Patent ID: 11939905
Assignee: BOARD OF TRUSTEES OF MICHIGAN STATE UNIVERSITY
Field: Engines, pumps, turbines (Mechanical engineering)
Classification: CPC F  Y | IPC F

Claim 1:
2. An engine apparatus comprising:
(a) a pre-chamber including a pre-combustion cavity and at least one combustion exit aperture;
(b) an ignitor having a distal end in or directly accessible to the pre-combustion cavity;
(c) a pre-chamber air inlet valve having a portion located in or adjacent to the pre-combustion cavity;
(d) a main piston cylinder including a main combustion chamber;
(e) a fuel injector located external to the pre-combustion cavity, the fuel injector including an injection tip located in the main combustion chamber, and the fuel injector being spaced away from the pre-chamber; and
(f) the fuel injector operably emitting fuel into the main combustion chamber which is pushed into the at least one aperture for subsequent pre-combustion by the ignitor within the pre-chamber cavity, the fuel injector being the sole source of the fuel into the pre-chamber cavity;
(g) wherein the pre-chamber is part of a cartridge, the ignitor, the pre-chamber air inlet valve and the pre-chamber cavity are preassembled to a body of the cartridge, and the preassembled cartridge is subsequently removably mounted to an engine cylinder head.