Journal of the Korean Society of Mechanical Technology (한국기계기술학회지)

Korean Society of Mechanical Technology (한국기계기술학회)
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Development of the Design and Manufacturing Technologies of the Experimental Four-Valve SI Engine for In-Cylinder Air Flow Study Using the Laser Based Flow Diagnostic Techniques

실린더 내 유동해석에 레이저 기반 유동 진단기술 적용을 위한 실험용 Four-valve SI 기관의 설계 및 제작기술 개발

  • Received : 2018.05.04
  • Accepted : 2018.05.25
  • Published : 2018.06.28
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Abstract

An AVL research engine, type 520, is modified to adapt to the 3.5L four-valve SI engine. With these given engine configurations, a test rig is constructed which allows easy changing of the different pistons and engine heads with a motoring capacity up to 3500 rpm. Nearly complete optical access to the inside of the cylinder is obtained by installing a transparent quartz cylinder on an AVL single cylinder engine. To avoid lubrication and to minimize scratches in the quartz cylinder the piston rings are made of Rulon-LD. With this experimental engine, researches for the in-cylinder flow characteristics by changing the induction system have been carried out using the laser based flow diagnostic techniques. In accordance with the previous result, it is evident that larger sized particles would be required in order to observe the flow characteristics of interest. The flow visualization taken with microballoon particles shows significant improvement. This provide detailed information.

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References

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