Transactions of the Korean hydrogen and new energy society (한국수소및신에너지학회논문집)

The Korean Hydrogen and New Energy Society (한국수소및신에너지학회)
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A Study About Effects of Changed Load on Dynamic·Combustion Characteristics of Linear Engine

부하 변화에 따른 리니어엔진의 동적·연소특성에 대한 연구

  • Lee, Jaewan (Graduate of Mechanical Engineering, Ulsan University) ;
  • Lim, Ocktaeck (School of Mechanical Engineering, Ulsan University) ;
  • Kim, Gangchul (Korea Institute of Energy Research)
  • 이재완 (울산대학교 기계공학과 대학원) ;
  • 임옥택 (울산대학교 기계공학부) ;
  • 김강출 (에너지기술연구원 에너지효율센터)
  • Received : 2013.03.26
  • Accepted : 2013.06.30
  • Published : 2013.06.30
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Abstract

A linear engine has advantages in terms of volume and weight, because there are no rotating parts. Thus, it is considered that linear engines might be suitable in hybrid vehicles. However, the linear engine has challenges in terms of the engine ignition timing and efficiency, so the engine has not been commercialized yet. In this study, the dynamic and combustion characteristics of the linear engine might be specified by various loads which are changed by conductance. The engine used in this experiment consists of two combustion chambers, four compressors, two linear alternators and a mover with a piston head and magnets. The way fuel is supplied in the experiment is by propane fuel being mixed with air in the carburetor, then being delivered into combustion cylinders via compressors. In the experiment, conductance is altered from 0.04 to 0.16mho, and the ignition timing is ahead by just 5.0mm from the maximum stroke. As a result of the experiment, frequency, stroke, input calories and maximum pressure are decreased when the conductance is increased. Meanwhile, IMEP, generation efficiency and electric power are increased when the conductance is increased. Therefore, it might confirm that high conductance generates more efficient electric power, but that thermal efficiency is the highest in the state of 0.08mho.

Keywords

References

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