Forces and Efficiency of Cams

F. I. Petrescu(1*), R. V. Petrescu(2)

(1) Senior Lecturer at UPB (Bucharest Polytechnic University), TMR (Theory of Mechanisms and Robots) department, Romania
(2) Senior Lecturer at UPB (Bucharest Polytechnic University), TTL (Transport, Traffic and Logistics) department, Romania
(*) Corresponding author


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Abstract


The paper presents an original method to determine the efficiency of a mechanism with cam and follower. The originality of this method consists in eliminating the friction modulus. In this research it analyses four types of cam mechanisms: 1.The mechanism with rotary cam and plate translated follower; 2.The mechanism with rotary cam and translated follower with roll; 3.The mechanism with rotary cam and rocking-follower with roll; 4.The mechanism with rotary cam and plate rocking-follower. For every kind of cam and follower mechanism one uses a different method to determine the most efficient design. We take into account the cam’s mechanism (distribution mechanism), which is the second mechanism in internal-combustion engines.
The optimizing of this mechanism (the distribution mechanism), can improve the functionality of the engine and may increase the comfort of the vehicle too.


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Keywords


Cam; Efficiency; Translated Follower; Rocking-Follower; Follower with Roll

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References


J. Angelas, C. Lopez-Cajun, Optimal synthesis of cam mechanisms with oscillating flat-face followers. Mechanism and Machine Theory 23,(1988), Nr. 1., p. 1-6., 1988.

P. Antonescu, F. Petrescu, O. Antonescu, Contributions to the Synthesis of The Rotary Disc-Cam Profile, In VIII-th International Conference on the Theory of Machines and Mechanisms, Liberec, Czech Republic, p. 51-56, 2000.

Z. Ge, a.o., Mechanism Design amd Dynamic Analysis of Hybrid Cam-linkage Mechanical Press, Key Engineering Materials Journal, Vol. 474-476 (2011), p. 803-806.

Z. Ge, a.o., CAD/CAM/CAE for the Parallel Indexing Cam Mechanisms, Applied Mechanics and Materials Journal, Vol. 44-47 (2011), p. 475-479.

Ghazimirsaied, A., Jazayeri, S.A., Shamekhi, A.H., Improving volumetric efficiency using intake valve lift and timing optimization in SI engine, (2010) International Review of Mechanical Engineering (IREME), 4 (3), pp. 244-252.

F. Giordana, s.a., On the influence of measurement errors in the Kinematic analysis of cam. Mechanism and Machine Theory 14 (1979), nr. 5, p. 327-340, 1979.

K. Hain, Optimization of a cam mechanism to give good transmissibility maximal output angle of swing and minimal acceleration. Journal of Mechanisms 6 (1971), Nr. 4, p. 419-434.

Sedighi, H.M., Shirazi, K.H., Using homotopy analysis method to determine profile for disk cam by means of optimization of dissipated energy, (2011) International Review of Mechanical Engineering (IREME), 5 (5), pp. 941-946.

M. Liu, Z. Qian, Research on Reverse Design of the Cam Mechanism, Applied Mechanics and Materials Journal, Vol. 43 (2011), p. 551-554.

F. Petrescu, R. Petrescu, Contributii la sinteza mecanismelor de distributie ale motoarelor cu ardere internã. In E.S.F.A.’95, Vol. 1., p. 257-264., Bucuresti, mai 1995.

F.I. Petrescu, R.V. Petrescu, Contributions at the dynamics of cams. In the Ninth IFToMM International Symposium on Theory of Machines and Mechanisms, SYROM 2005, Bucharest, Romania, 2005, Vol. I, p. 123-128.

F.I. Petrescu, Theoretical and Applied Contributions about the Dynamic of Planar Mechanisms with Superior Joints, Doctoral Thesis, Bucharest Polytechnic University, 2008.

Y. Samim, a.o., Analytical Dynamic Response of Elastic Cam-Follower Systems with Distributed Parameter Return Spring, Journal of Mechanical Design (ASME), Vol. 115, Issue 3, (online June 2008), p. 612-620.

Shriram, R., Mari Ram Kumar, M., Vignesh Aadhithya, T., Vijaya Ramnath, B., Design and development of camless valve train for I.C. engines, (2012) International Review of Mechanical Engineering (IREME, 6 (5), pp. 1044-1049.

D. Taraza, "Accuracy Limits of IMEP Determination from Crankshaft Speed Measurements," SAE Transactions, Journal of Engines 111, p. 689-697, 2002.

W. Wang, Creation Design of Cam Mechanism Based on Reverse Engineering, Advanced Materials Research Journal, Vol. 230-232 (2011), p. 453-456.

F. Xianying, a.o., Meshing Efficiency of Globoidal Indexing Cam Mechanism with Steel Ball, Advanced Materials Research Journal, Vol. 413 (2012), p. 414-419.

H.D. Zhao, a.o., Research on Dynamic Behavior of Disc Indexing Cam Mechanism Based on Virtual Prototype Technology, Key Engineering Materials Journal, Vol. 499 (2012), p. 277-282.

G. Zhou, a.o., Seriation Design and Research on Cam Shedding Mechanism of Looms, Advanced Materials Research Journal, Vol. 479-481 (2012), p. 2383-2388.


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