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TECHNICAL PAPERS

Determination of Allowable Pushrod Angle Using a Three-Dimensional Valve Train Model

[+] Author and Article Information
C. Y. Cheng, D. J. Lewandowski, J. W. David

Department of Mechanical and Aerospace Engineering, North Carolina State University, Raleigh, NC 27615

J. Dyn. Sys., Meas., Control 123(3), 408-412 (Jan 30, 1998) (5 pages) doi:10.1115/1.1388297 History: Received January 30, 1998
Copyright © 2001 by ASME
Topics: Valves , Trains , Engines
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References

Scholes,  G. E., 1922, “Experiments on Cams and Poppet Valves,” The Institution of Automobile Engineers, 16, Part II. pp. 325–329.
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Hrones,  J. A., 1948, “An Analysis of the Dynamic Forces in a Cam-Driven System,” Trans. ASME, 70, pp. 473–482.
Mitchell,  D. B., 1950, “Tests on Dynamic Response of Cam-Follower Systems,” Mech. Eng. (Am. Soc. Mech. Eng.), 72, pp. 467–471.
Barkan,  P., 1953, “Calculation of High-Speed Valve Motion with a Flexible Overhead Linkage,” SAE Trans., 61, pp. 687–700.
Mahig, J., 1970, “Spring and Follower Characteristics Due to Internal Damping and Cam Actuation,” ASME paper 70-Mech-76.
Koster, M. P., 1974, “Effect of Flexibility of Driving Shaft on the Dynamic Behavior of a Cam Mechanism,” ASME paper 74-DET-48.
Akiba, K., Shimizu, A., and Sakai, H., 1981, “A Comprehensive Simulation of High Speed Driven Valve Trains,” SAE Technical Paper 810865.
Pisano,  A. P., and Freudenstein,  F., 1983, “An Experimental and Analytical Investigation of the Dynamic Response of a High-Speed Cam-Follower System, Part 1 & 2,” ASME Journal of Mechanisms, Transmissions, and Automation in Design, 105, pp. 699–704.
Kosugi, T., and Seino, T., 1985, “Valve Motion Simulation Method for High-Speed Internal Combustion Engines,” SAE Technical Paper 850179.
Phlips, P. J., Schamel A. R., and Meyer J., 1989, “An Efficient Model for Valvetrain and Spring Dynamics,” SAE Technical Paper 890619.
Kim, D., and David, J. W., 1990, “A Combined Model for High Speed Valve Train Dynamics (Partly Linear and Partly Nonlinear),” SAE Technical Paper 901726.
Rob, J., and Arnold, M., 1993, “Analysis of Dynamic Interactions in Valve Train Systems of IC-Engines by Using a Simulation Model,” SAE Technical Paper 930616.
David, J. W., and Kim, D., 1994, “Optimal Design of High Speed, Valve Train Systems,” SAE Technical Paper 942502
Lee, J., and Patterson D. J., 1995, “Nonlinear Valve Train Dynamics Simulation with a Distributed Parameter Model of Valve Spring,” ASME publication, ICE-Vol. 23, Engine Modeling, pp. 51–58.
David, J. W., Kelley, C. T., and Cheng, C. Y., 1996, “Use of an Implicit Filtering Algorithm for Mechanical System Parameter Identification,” SAE Technical Paper 960358.
Gast, G. J., and David, J. W., 1996, “Pushrod Modeling and Valve Train Dynamics of High Speed IC Engines,” SAE Technical Paper 960352.
Kim, D., 1990, “Dynamics and Optimal Design of High Speed Automotive Valve Trains,” PhD. Thesis, North Carolina State University, Raleigh, NC.
Freudenstein,  F., Mayourian,  M., and Maki,  E. R., 1983, “Energy Efficient Cam-Follower Systems,” T ASME Journal of Mechanisms, Transmissions, and Automation in Design, 105, pp. 681–685.
Seidlitz S., 1989, “Valve Train Dynamics—A Computer Study,” SAE Technical Paper 890620.

Figures

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Top and side views of valve train
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Initial and rotated positions of valve train
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Comparison of valve motion at seat contact
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Comparison of valve bounce amplitude for entire test range
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Schematic of the experimental test apparatus
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Valve bounce curves for various pushrod angles
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Limit speeds vs. pushrod angles

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