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Developmental Research on Computer Aided Analysis and Design of an Engine Combustion System

Research Project

Project/Area Number 61850037
Research Category

Grant-in-Aid for Developmental Scientific Research

Allocation TypeSingle-year Grants
Research Field Thermal engineering
Research InstitutionHIROSHIMA UNIVERSITY

Principal Investigator

HIROYASU Hiroyuki  Dept. of Mech. Engrg., Hiroshima University, 工学部, 教授 (40034326)

Co-Investigator(Kenkyū-buntansha) OKADA Saburo  Government Industrial Research Institute,Chugoku, 機械金属部システム工学研究室, 主任研究官
住本 哲宏  中国工業技術試験所, 機械金属部システム工学研究室, 室長
NISHIDA Keiya  Dept. of Mech. Engrg., Hiroshima University, 工学部, 助手 (90156076)
ARAI Masataka  Dept. of Mech. Engrg., Hiroshima University, 工学部, 助教授 (80112176)
SUMIMOTO Tetsuhiro  Government Industrial Research Institute, Chugoku
Project Period (FY) 1986 – 1987
Project Status Completed (Fiscal Year 1987)
Budget Amount *help
¥7,500,000 (Direct Cost: ¥7,500,000)
Fiscal Year 1987: ¥1,500,000 (Direct Cost: ¥1,500,000)
Fiscal Year 1986: ¥6,000,000 (Direct Cost: ¥6,000,000)
KeywordsComputer Aided Design / CAD / Internal Combustion Engine / Combustion / Simulation / 最適化
Research Abstract

A quantitative analysis of fuel vapor concentration in a fuel sprayh was made for obtaining fundamental knowledge of mixture formation which was necessary for the development of a sumulation program of diesel engine combustion. For this purpose, the technique for processing the spray image taken by the schlieren and shadow photography was developed, and applied to the axisymmetric spray in a high-pressure and high-temperature atmosphere. Internal structure of the spray distorted in a cross air flow was analyuzed by combining this image processing technique with the program for the computed tomographic transformation. Several informations obtained through these analysed were incorporated into the simulation program of the diesel engine combustion, which was composed of an air flow sub-program, and a mixture formation and combustion sub-program. The air flow sub-program was created for mainly predicting the swirling air flow during a compression stroke, especially at fuel injection timin … More g. Taking the computational cost and accuracy of into consideration, a two-zone model was adopted, and the angular velocities of the swirling air flow in the zones inside and outside the piston cavity radius were computed. The principle consideration of the mixture formation and combustion sub-program was to find the injection and combustion chamber parameters matching with the swirling air flow, and to predict the over-swirl phenomenon. The comubustion chamber was mapped with non-uniform rectangular soulid cells in cylindrical coordinates. The conservation equations for fuel vapor concentration, combustion product concentration and gas enthalpy were discretized in a finite difference technique. By numerically solving these conservation equations, the spatial distributions of fuel vapor concentration, combustion product concentration and gas temperature were obtained. The comparison between the computed result, and the angular velocity measured with the laser doppler velocimeter and fthe flame behavior observed in a high-speed combustion movie, demonstrates the potential of this simulation program. Less

Report

(2 results)
  • 1987 Final Research Report Summary
  • 1986 Annual Research Report
  • Research Products

    (13 results)

All Other

All Publications (13 results)

  • [Publications] 西田恵哉: 日本機械学会論文集(B編). 53-488. 1487-1495 (1987)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1987 Final Research Report Summary
  • [Publications] 西田恵哉: 日本機械学会論文集(B編). 54-497. 203-210 (1988)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1987 Final Research Report Summary
  • [Publications] 西田恵哉: 第15回液体の微粒化に関する講演会講演論文集. 37-42 (1987)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1987 Final Research Report Summary
  • [Publications] K.Nishida: Twenty-Second Symposium(International)on Combustion. (1989)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1987 Final Research Report Summary
  • [Publications] A.Murakami: SAE Paper. NO.880385. 1-20 (1988)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1987 Final Research Report Summary
  • [Publications] K.Nishida: "Laser Dignostics and Modeling of Combustion" Iinuma,Asanuma,Ohsawa,Doi(Eds)Springer-Verag Berlin, 355 (1987)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1987 Final Research Report Summary
  • [Publications] Nishida,Keiya: "Measurements of Fuel Vapor Concentratgion in a Diesel Spray by Image Analysis of a Reconstructed Hologram" Transactions of the Japan Society of Mechanical Engineers (B). 54-488. 1487-1495 (1987)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1987 Final Research Report Summary
  • [Publications] Nishida,Keiya: "Measurements of Fuel Vapor Concentration in a Diesel Spray by Image Analysis of a Reconstructed Hologram (2nd Report, Results at High-Temperature and High-Pressure Atmosphere)" Transactions of the Japan Society of Mechanical Engineers (B). 54-497. 203-210 (1988)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1987 Final Research Report Summary
  • [Publications] Nishida,Keiya: "Combined Schlieren and Computed Tomography Methods for Measuring" Proceedings of the 15th Conference on Liquid Atomization and Spray Systems in Far East. 37-42 (1987)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1987 Final Research Report Summary
  • [Publications] Nishida,keiya: "Combined Schlieren and Computed Tomographic Technique for Analyzing Fuel Jet and Vaporizaing Spray" Twenty-Second Symposium (International) on Combustion. (1989)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1987 Final Research Report Summary
  • [Publications] Murakami,Akira: "Sirl Measurements and Modeling in Direct Injection Diesel Engines" SAE Paper. no.880385. 1-20 (1988)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1987 Final Research Report Summary
  • [Publications] Nishida,Keiya: Iinuma,Asanuma,Ohsawa,Doi (Eds), Springer-Verlag Berlin. Laser Diagnostics and Modeling of Combustion, 355 (1987)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1987 Final Research Report Summary
  • [Publications] 西田恵哉: 日本機械学会関西支部第246回講演会抜刷. ANo.86-0454. 1-7 (1986)

    • Related Report
      1986 Annual Research Report

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Published: 1987-03-31   Modified: 2016-04-21  

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