저개도 카뷰레터 쓰로틀에서의 26cc 소형원동기의 공기과잉율에 따른 성능특성

Performance of 26cc Small Sized Two-Stroke SI Engines on Excess air factor at partial opened carburetor throttle

  • 최영하 (전북대학교 대학원) ;
  • 김병국 (전북대학교 대학원) ;
  • 조형문 (전북대학교 대학원) ;
  • 윤석주 (전북대학교 자동차신기술연구센터) ;
  • 김동선 (전북대학교 자동차신기술연구센터) ;
  • 한종규 (한성공업주식회사)
  • 발행 : 2008.03.26

초록

This paper presents the effects of excess air factors(0.84${\sim}$0.90) and opened throttle area ratios(AR=0.15${\sim}$0.25) on the emission and performance of a small spark-ignition gasoline engine. The engine used in this paper was a single cylinder, diaphragm carburetor, two-stroke, air-cooled 26cc engine for brush cutter. The rpm, torque, fuel consumption and CO emission were measured under the four different excess air factors and three different opened area ratios conditions on the engine loads respectively. The results showed that the rpm was decreased and torque was increased at increasing load, the maximum power and minimum fuel consumption could be obtained critical rpm on each throttle opened area ratios and brake specific fuel consumption was decreased 13${\sim}$17%, CO emissions was decreased 21${\sim}$38% at excess air factor 0.90 than 0.84.

키워드