According to the present invention, provided is a low-pressure duel fuel engine for a vessel, capable of securing the safety of combustion by improving the mixture of air and fuel, thereby preventing the production of methane slips and knocking and a deterioration in the output of an engine as well as waste of fuel caused by incomplete combustion, and further, suppressing an increase in the emission of nitrogen oxide (NOx) which is an environment pollutant. A mixture supply module of the present invention includes fuel supply equipment, air supply equipment and a flow path type mixture supply pipe to supply a mixture of fuel and air. The fuel supply equipment includes: a flow path type fuel supply pipe connected by being extended from the mixture supply pipe communicating with a cylinder; and a fuel supply valve installed in the fuel supply pipe to open or close the fuel supply pipe. The air supply equipment includes: a flow path type air supply pipe; and an air supply valve installed in the air supply pipe to open or close the air supply pipe. In order to form a spiral transfer flow in which the air transferred along the air supply pipe flows to the mixture supply pipe along the inner edge surface of the fuel supply pipe, the air supply pipe is placed in a radial direction of the connection supply pipe, while being connected to the fuel supply pipe in a direction for contact with the inner edge of the fuel supply pipe.

    본 발명은 연료와 공기의 혼합을 개선 및 향상하여 연소의 안전성을 확보함으로써, 불연소로 인한 연료 낭비는 물론 엔진의 출력이 저하, 노킹(Knocking) 및 메탄 슬립의 발생을 방지하며, 나아가 환경오염물질인 질소산화물(NOx)의 배출량 증대를 억제할 수 있도록 한 것으로, 본 발명의 혼합공급모듈은 연료와 공기를 혼합 공급할 수 있도록 연료공급기구와 공기공급기구 및 유로 형태의 혼합공급관을 포함하고, 상기 연료공급기구는 실린더와 소통하는 혼합공급관으로부터 연장되는 형태로 연결되는 유로 형태의 연료공급관 및 상기 연료공급관 내에 설치되어 연료공급관을 개폐하는 연료공급밸브를 포함하고, 상기 공기공급기구는 유로 형태의 공기공급관 및 상기 공기공급관 내에 설치되어 공기공급관을 개폐하는 공기공급밸브를 포함하고, 상기 공기공급관을 따라 이송되는 공기가 연료공급관의 내주면을 따라 흐르면서 혼합공급관으로 진행하는 나선형의 이송 흐름을 형성하도록 상기 공기공급관이 연결공급관의 반경 방향으로 배치되면서 연료공급관의 내면 둘레와 접선하는 방향으로 연료공급관에 연결되는 선박용 저압 이중연료 엔진이 제공된다.


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    Title :

    Low Pressure Dual-Fuel Engine for Ship


    Additional title:

    선박용 저압 이중연료 엔진


    Contributors:
    LEE HYO JEONG (author) / KIM KI DOO (author)

    Publication date :

    2020-01-21


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    Korean


    Classification :

    IPC:    F02B INTERNAL-COMBUSTION PISTON ENGINES , Brennkraftmaschinen mit innerer Verbrennung mit Verdrängerwirkung / B63H Schiffsantrieb oder Steuerung der Schiffe , MARINE PROPULSION OR STEERING / F02D CONTROLLING COMBUSTION ENGINES , Steuern oder Regeln von Brennkraftmaschinen / F02M Zuführen von Brennstoff-Luft-Gemischen oder deren Bestandteilen bei Brennkraftmaschinen allgemein , SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF



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