Patent ID: 8910612

Claim:
A pre-chamber jet igniter, wherein air is supplied to a combustion chamber having a reciprocating piston; fuel is injected into the air to form an air-fuel mixture, and the air-fuel mixture is then burnt in the combustion chamber to generate a combustion flame; the combustion flame is injected into a space inside the combustion chamber in a form of at least one jet combustion flame; the jet combustion flame serves as a source of ignition so that the fuel injected into the space inside the combustion chamber is combusted; and a explosion stroke is driven in the combustion chamber by combustion of the injected fuel, the pre-chamber jet igniter comprising: a compression block having a compression chamber in which the external air and the fuel injected into the air are mixed to form the air-fuel mixture; a sub-injector which is installed to the compression block to inject the fuel into the compression chamber; a pressurizing piston which changes a volume of the compression chamber to increase a pressure of the air-fuel mixture; a valve unit which is opened when the pressure of the air-fuel mixture is increased, so that the air-fuel mixture is discharged from the compression chamber; a combustion block having a combustion space to combust the air-fuel mixture discharged from the valve unit; a spark plug which is installed in the combustion block to generate a spark so that the air-fuel mixture passing through the combustion block is combusted; and a jet nozzle which injects a flame generated by combustion of the air-fuel mixture in a form of at least one jet combustion flame, in which an injection direction of the jet combustion flame is toward the space inside the combustion chamber having the reciprocating piston.