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A Study on the Monitoring System for Engine Control by Measuring Combustion Pressure Continuously in All Cylinders

Miharat Yoshinori    (Kobe University/Oshima National College of Maritime Technology   ); Maruyama Yasuo    (Shoyo Engineering Co..LTD   ); Okada Yutaka    (Shoyo Engineering Co..LTD   ); Kido Hachiro    (Marine Technical College   ); Nishida Osami    (Kobe Univeristy   ); Fujita Hirotsugu    (Kobe Univeristy   ); Ito Masakazu    (Oshima National College of Maritime Technology  );
  • 초록

    A marine diesel engine should realize optimal operation efficiency while reducing NOx, PM (Particulate Matters) and other emissions. Fuel injection systems that use electronic control can become an effective means of achieving that objective. However. it still needs some accurate and instant information in order to bring its ability into full potential while sailing on the sea. The important information of them are a shaft torque and continuous combustion pressures of all cylinders. The shaft torque and the propeller thrust described in this paper are measured at an intermediate shaft by using a unique principle that one of two electromagnet coils oscillates a vibrating strip which the length changes with force and the other coil picks up the change of the frequency of the vibrating strip. For further reference, the shaft power meter multiplied the torque by the shaft revolution has already had about 750 sets of sales performance. The research presented in this paper started about ten years ago and is concerned with the development of a combustion pressure sensor that uses the same principle. Recently, the pressure sensor which bears continuous operation has been developed after a hard struggle, that is, the system that consists of a shaft horsepower meter, a propeller thrust meter and a combustion pressure sensor has been completed and has been shown to be reliable. This paper describes the configuration of this system, the material of the combustion pressure sensor, the principle of that, and the improving point of the sensor, and, we finally consider the use of this system.


  • 주제어

    Diesel engine .   Optimal operation .   Torque and combustion pressure .   Electronic fuel injection pump.  

  • 참고문헌 (4)

    1. Yoshio Takasugi, 'Development for operation of electronic control marine diesel engine,' Journal of the Japan institution of marine engineering, Vol. 36, No. 12, pp. 16-24, 2001 
    2. Keizou Hatsuta etc., 'Nainenn kikann keisoku hand book,' Asakura shoten. pp. 349-351, 1979 
    3. Fujio Nagao. 'Nainenn kikann kogi (jyoukan),' Youkenndou Co., pp. 229-233. 1994 
    4. Takeshi Imahashi et al. 'Analysis on pattern of heat release rate in two-stroke slow-speed diesel engine (1st report: Investigation on analysis results of heat release rate),' Journal of the Japan institution of marine engineering, Vol. 38, No. 4, pp. 40-47, 2003 

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