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Relationship of Valve-Spring Design to Valve Gear Dynamics and Hydraulic Lifter Pump-up
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Abstract
THE author shows how the success of a valve-spring design is intrinsically related to both the cam design and the valve gear dynamics obtained at high engine speeds.
Good valve gear dynamics, which is characterized by minimum vibration, he says, minimizes hydraulic lifter pump-up tendency and greatly simplifies the job of making a satisfactory spring design.
He shows that the use of the smooth-acceleration curve is very helpful in producing good valve gear dynamics, and that it is to be recommended over other types.
The author also discusses the use of dual springs and cyclo-pelting and presetting of springs.
Discussion of this and other papers on “Valve Gear Problems in Modern Overhead-Valve Engines” starts on page 714.
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Citation
Turkish, M., "Relationship of Valve-Spring Design to Valve Gear Dynamics and Hydraulic Lifter Pump-up," SAE Technical Paper 530263, 1953, https://doi.org/10.4271/530263.Also In
References
- “Idiosyncrasies of Valve Mechanisms and Their Causes,” Jehle F. Spiller. W. R. SAE Journal 24 February 1929 133 143
- “Electric Telemeter and Valve-Spring Surge,” Donkin W. T. Clark. H. H. SAE Journal 24 March 1929 315 326
- “Vibration Problems in Engineering,” Timoshenko. S. Pub. by Van Nostrand New York 1937
- “Forced Vibrations and Resonant Frequencies in Machinery,” Fuchs. H. O. Product Engineering 9 July 1938 256 258 August 1938 299 302 December 1938 479 480
- “Poppet Valve Dynamics,” Olmstead E. H. Taylor. E. S. Journal of Aeronautical Sciences 6 July 1939 370 375
- “Graphical Analysis of Surges in Mechanical Springs,” DeJuhasz. K. J. Journal of Franklin Institute 226 October 1938 505 532 November 1938 631 644
- “Graphical Analysis of Free Vibrations of Helical Springs,” DeJuhasz. K. J. Journal of Franklin Institute 227 May 1939 647 672
- “Valve Gear Problems,” Turkish. M. C. Dumont Oscillographer 8 January/February 1946
- “Valve Gear Design,” Turkish. M. C. Pub. by Eaton Mfg. Co. Detroit 1946
- “Mechanical Vibrations,” Thomson. W. T. Pub. by Prentice-Hall New York 1948
- “Analysis of Dynamic Forces in Cam-Driven System,” Hrones. J. A. ASME Transactions 70 July 1948 473 482
- “Vibrations in Valve Mechanisms,” Warming. T. ASME Paper No. 49-OPG-2 Presented at 1949 Oil & Gas Power Conference