에너지공학 (Journal of Energy Engineering)

  • 제19권1호
  • /
  • Pages.32-38
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  • 2010
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  • 1598-7981(pISSN)
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  • 2713-7074(eISSN)
한국에너지학회 (The Korean Society for Energy)
권호 표지

Effects of the Intake Valve Timing and the Injection Timing for a Miller Cycle Engine

  • 투고 : 2009.12.09
  • 심사 : 2010.03.26
  • 발행 : 2010.03.31
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초록

The objective of the research was to study the effects a Miller cycle. The engine was dedicated to natural gas usage by modifying pistons, fuel system and ignition systems. The engine was installed on a dynamometer and attached with various sensors and controllers. Intake valve timing, engine speed, load, injection timing and ignition timing are main parameters. Miller Cycle without supercharging can increase brake thermal efficiency 1.08% and reduce brake specific fuel consumption 4.58%. The injection timing must be synchronous with valve timing, speed and load to control the performances, emissions and knock margin. Throughout these tested speeds, original camshaft is recommended to obtain high volumetric efficiency.

키워드

참고문헌

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