Analysis of Wall impingement Spray and Film Formation Process of Direct Injection SI Engines under Low Temperature Conditions

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Other Title
  • 低温環境下における直噴ガソリンエンジン用噴霧の壁面衝突と液膜形成過程の解明
  • ‐Controlled Fuel and Wall Temperature as Experimental Parameters‐
  • ‐燃料および壁面温度をパラメータとした現象解明‐

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Description

In a direct injection spark ignition engine, strict control of pollutant emissions at cold start is required to comply with new regulations. Fuel temperature and wall temperature are especially important parameters because they are closely related to the fuel film formed by spray impingement on the wall. The purpose of this study is to clarify the mixture and fuel film formation process with wall impingement spray under low temperature fuel and wall conditions. Construction of a spray experiment equipment that can simultaneously cool fuel temperature and wall temperature, and Total internal reflection laser induced fluorescence (TIR-LIF) method was applied to the fuel film formed by wall impingement spray. TIR-LIF method can measure fuel film thickness by fluorescence from fuel film during the spray injection without the influence of the spray droplet. In this paper, the fuel and wall temperatures were controlled from 293 K to 253 K to investigated film formation process during spray injection. In addition heat of evaporation considering heat capacity of fuel film was estimated.

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Details 詳細情報について

  • CRID
    1390294208468945664
  • DOI
    10.11351/jsaeronbun.53.1192
  • ISSN
    18830811
    02878321
  • Text Lang
    ja
  • Data Source
    • JaLC
  • Abstract License Flag
    Disallowed

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