Combustion generating device of internal combustion engine

摘要

Provided is a combustion generating device of an internal combustion engine, which is capable of performing very precise flame control through a simple structure which does not need a prechamber and reducing harmful exhaust gas through low-temperature rapid combustion. The combustion generating device includes: an ignition system generating a spark; and an injector generating a mixture by mixing air and fuel and injecting a flame into a combustion chamber, the flame being generated by applying the spark to the mixture.

主权项

1. A combustion generating device of an internal combustion engine, comprising:
an ignition unit generating a spark; and an injector unit comprising an injector generating a mixture of air and fuel by mixing the air and the fuel supplied thereto and injecting a flame into a combustion chamber, the flame being generated by applying the spark to the mixture, wherein the injector unit includes:
a spark plug installed inside the injector;an injector body;a valve slidably mounted in the injector body, selectively receiving the fuel and the air according to a movement of the valve and mixing the received fuel and air to generate the mixture thereof, and injecting the generated mixture into the combustion chamber;a solenoid unit receiving a control signal from an engine control unit (ECU) and selectively moving the valve in the injector body in a longitudinal direction of the valve;an air supply port and a fuel supply port formed to the injection body for supplying the air and the fuel to the inside of the valve;a valve groove formed in the center of the injector body in a longitudinal direction of the injector body, wherein the valve is installed in the valve groove so as to move along the longitudinal direction of the valve;a fuel supply member mounted inside the valve and fixed to the injector body, wherein the valve is slidably mounted on an outer surface of the fuel supply member; anda fuel supply hole formed inside the fuel supply member, wherein
the fuel supply hole extends to a lower portion of the fuel supply member along the longitudinal direction thereof and continuously fluid-communicating with the fuel supply port of the injector body,the fuel supply hole is fluid-connected with a plurality of fuel discharge holes formed along the longitudinal direction of the fuel supply hole, and each of the fuel discharge holes extends outward radially from the fuel supply hole,the valve has a plurality of valve discharge holes which is selectively fluid-connected to the plurality of the fuel discharge holes,the lower portion of the valve groove forms a mixing chamber between an outer circumference of the valve and an inner circumference of the injector body, anda lower portion of the mixing chamber has a shape that is opened or closed by a plug.