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

Claim 0:
1. 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, a centerline axis of the fuel injector being between an uppermost surface of the main piston cylinder and the ignitor such that the centerline axis of the fuel injector does not intersect the uppermost surface of the main piston cylinder in any operating position of the main piston cylinder, and the fuel injector being spaced away from the pre-chamber;
(f) the fuel injector being configured to emit a first amount of 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; and
(g) the same fuel injector being configured to emit at least a second amount of the fuel into the main combustion chamber which is less than the first amount of the fuel for combustion in the main combustion chamber and at least the second amount of the fuel being ignited by the pre-combustion occurring in the pre-chamber cavity.