The Effect of Excess Air Ratio and In-Cylinder Water Injection on Wall Heat Transfer in SI Engine

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Other Title
  • SI エンジンにおける空気過剰率および筒内水噴射が壁面熱伝達に与える影響

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Description

The effect of excess air ratio and in-cylinder water injection on the relationship between in-cylinder pressure and wall heat flux measured at the engine head was investigated using a single cylinder SI engine at 2000 rpm. The obtained results were summarized as the relationship between Reynolds and Nusselt numbers using an average piston speed as representative value. At compression stroke in motoring and unburnt region of firing, exponent of Re in Re vs. Nu plot is close to 0.8 while the exponent in burnt region is higher than 0.8. In addition, the exponent is affected by both excess air ratio and water injection timing.

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Details 詳細情報について

  • CRID
    1390566775161734528
  • NII Article ID
    130007891829
  • DOI
    10.11351/jsaeronbun.51.739
  • ISSN
    18830811
    02878321
  • Text Lang
    ja
  • Data Source
    • JaLC
    • CiNii Articles
  • Abstract License Flag
    Disallowed

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