Pre-chamber jet igniter and engine including combustion chamber employing the same

摘要

An engine includes a pre-chamber jet igniter which injects at least one jet combustion flame into the combustion chamber from the outside of the combustion chamber in which the piston reciprocates to generate power so that the injected jet combustion flame is utilized as the source of ignition of the fuel injected into the space in the combustion chamber to drive the explosion stroke such that combustion of the combustion chamber can be maintained reliable by the use of jet combustion flames in the form of large flame kernels, fuel consumption can be remarkably improved and the generation of NOx can be remarkably reduced using rapid cold combustion which is caused by the continuously reliable combustion, and, in particular, it is possible to prevent liquefaction of the air-fuel mixture due to variations in the flow and pressure of the air-fuel mixture flowing in the combustion chamber.

主权项

1. 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.