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

The Korean Hydrogen and New Energy Society (한국수소및신에너지학회)
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The Experimental Research for the Combustion and Dynamic Characteristics of the Linear Engine on the Variable Spring Stiffness

압축기-연소실 일체형인 리니어엔진의 스프링 강성에 따른 연소 및 동적 특성 연구

  • Lee, Jaewan (Graduate of Mechanical and Automotive Engineering, Ulsan University) ;
  • Oh, Yongil (Graduate of Mechanical and Automotive Engineering, Ulsan University) ;
  • Kim, Gangchul (Korea Institute of Energy Research) ;
  • Lim, Ocktaeck (Department of Mechanical and Automotive Engineering, Ulsan University)
  • 이재완 (울산대학교 기계자동차공학과 대학원) ;
  • 오용일 (울산대학교 기계자동차공학과 대학원) ;
  • 김강출 (한국에너지기술연구원) ;
  • 임옥택 (울산대학교 기계자동차공학부)
  • Received : 2012.09.18
  • Accepted : 2012.12.31
  • Published : 2012.12.31
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Abstract

This study was experimentally investigated on the effects of spring stiffness applied to linear compressor chambers. The springs prevented piston head from colliding with engine cover, stored the kinetic energy and regenerated the kinetic energy. The linear engine has two combustion chambers and four compressor chamber. The combustion chamber bore size was 30 mm, maximum stroke was 31 mm and effective stroke volume was 25.45 cc respectively. The spring stiffness was varied such as 0, 0.5, 1.00, 2.9 and 14.7 N/mm. The linear engine was fueled with premixed LPG (propane 99%) and air by pre-mixture device. As an experimental result, The stroke, piston velocity and the piston frequency were increased by high spring stiffness. Also, thermal efficiency was grown. because the increased stroke made the higher compression ratio. In conclusion, electric power and efficiency were improved.

Keywords

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  1. A Study About Effects of Changed Load on Dynamic·Combustion Characteristics of Linear Engine vol.24, pp.3, 2013, https://doi.org/10.7316/KHNES.2013.24.3.206