Transactions of the Korean Society of Automotive Engineers (한국자동차공학회논문집)

The Korean Society of Automotive Engineers (한국자동차공학회)
권호 표지

An Experimental Study on the Effect of Valve Train Design Parameters on the Diesel Engine Valve Rotation

디젤엔진의 밸브회전에 미치는 밸브트레인 설계변수들의 영향에 관한 실험적 연구

  • 김도중 (울산대학교 기계자동차공학부) ;
  • 정영종 (현대자동차(주) 디젤엔진시험팀) ;
  • 이중희 (현대자동차(주) 디젤엔진시험팀)
  • Published : 2004.11.01
Download PDF
⟨ Previous Next ⟩

Abstract

In this paper we present the effects that valve train design parameters and operating conditions have on the valve rotation properties of a diesel engine. Rotation of intake and exhaust valves are very closely related to the long term durability of diesel engines. of the valves do not rotate even at a rated engine speed, it causes the uneven wear of the valve seat and valve head contact area, which eventually shortens the engine life. Because the rated speed of a diesel engine is relatively lower than that of a gasoline engine, the operating condition of a diesel engine produces tough environment for valve rotation. Therefore, the valve rotation is an important problem which should be solved in the early stage of engine development. In this study, we developed a new technique to measure the valve rotation and shaking motion simultaneously using three proximity sensors. Valve train rotating properties of a diesel engine were measured under various engine operating conditions.

Keywords

References

  1. R. Lewis, R. S. Dwyer-Joyce and G. Josey,'Investigation of Wear Mechanisms Occurringin Passenger Car Diesel Engine Inlet Valvesand Seat Inserts,' SAE 1999-01-1216, 1999
  2. G. Monteil, A. Gallmann, P. Sioshansi and P.Loges, 'Contribution of Nuclear Physics toEngine Design: Application of Surface LayerActivation to Tappet Rotation Measurement,'SAE 960711, 1996
  3. S. S. Cheng, 'The Physical Parameters that Influence Deposit Formation on an Intake Valve,' SAE 922257, 1992
  4. K. J. Chun and J. S. Hong, 'A Study on Engine Valve and Seat Insert Wearing Depending on Speed Change,' Transactions of KSAE,Vol.11, No.6, pp. 14-20, 2003
  5. TRW Automotive, Engine Components Hand-book: Valves, Valve Collets, Valve Rotation Devices. 1992
  6. K. Iwade, K. Saito, T. Kohama, T. Hamamotoand S. Fujiwara, 'Measurement and Analysisof an Exhaust Valve Behavior,' 日本 自動車技術會 學術講演會前刷集 971, 1997-5
  7. J. S. Kim, M. H. Lee and J. Y. Yun, 'The RigTest of Valve Train,' Daewoo Motor Co.,TECHNICAL REVIEW '97, pp. 280-291, 1997