Patent ID: 11959414
Assignee: CATERPILLAR INC.
Field: Engines, pumps, turbines (Mechanical engineering)
Classification: CPC F  H  Y | IPC F

Claim 15:
16. A method of controlling combustion speed in a reciprocating hydrogen engine comprising:
propagating a combustion flame of ignited gaseous hydrogen fuel outwardly in a combustion cylinder from an igniter;
impinging the combustion flame upon a cone surface of a piston in the combustion cylinder during the propagating a combustion flame;
limiting a flame area of the combustion flame exposed to additional gaseous hydrogen fuel in the combustion cylinder, such that some of the flame area is in contact with the additional gaseous hydrogen fuel and some of the flame area is in contact with the cone surface, based on the impinging the combustion flame upon a cone surface; and
slowing a speed of combustion of gaseous hydrogen fuel in the combustion cylinder based upon the limiting a flame area of the combustion flame.