Design of Polydyne Cam for High Speed I.C. Engine
Keywords:
Polydyne cam, displacement, velocity, acceleration of cam, profile, dynamic behaviour, under cutting, jump of followerAbstract
Cams play very important role in the I.C. engine valve gear mechanisms. Dynamic behaviour of cams for high speed engine causes cross over shock, jump, follower spring surge etc. A proper selection of suitable polydyne cam will reduce these adverse effects, to a large extent. In this paper, an attempt has been made to suggest a best suited cam profile for the valve gear mechanism of the existing high speed IC engine. A mathematical model of the cam is generated. A source code is developed in C language, to compute the displacement, velocity and acceleration of the cam follower. The methodology adopted tests the suitability of the polynomial cam profile for a given engine specifications and suggests modifications. The results are shown graphically and are also compared with the existing cam profile.
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References
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