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IJSTR >> Volume 6 - Issue 9, September 2017 Edition

International Journal of Scientific & Technology Research  
International Journal of Scientific & Technology Research

Website: http://www.ijstr.org

ISSN 2277-8616

Design And Analysis Of A Camless Valve Mechanism For I.C Engines Using Rotary Disc Valves

[Full Text]



Vivek Jitendra Panchal, Nachiket Milind Chitnavis



Introduction, Disadvantages of Conventional Engines, Concept of Rotary Disc Valves, Calculations, Hardware Design, Material Considerations, Combustion Cycle Analysis, Assumptions



It is the object of the presented paper to provide an electromechanical rotary valve actuating system for opening and closing valves of an internal combustion engine, capable of separately controlling both the inlet and exhaust valve operations of each individual cylinder in a multi-cylinder engine. This indicates that only one valve will be required for each cylinder of the engine. Previously published versions of this concept require a separate valve for intake and exhaust in each cylinder. The system provides an alternative to the camshaft assembly, in an attempt to overcome the limitations and inadequacies inevitably posed by a fully mechanical system. The prototype development is approached in a theoretical manner, beginning with the conceptualization and design of a rotating disk with a notches and corresponding closure surfaces to open and close the flow path. The actuated disk and notch design is then refined and followed by the design of an inlet and exhaust manifold to correspond to the valve design, and the theorizing and design of a sealing gasket. The rotating speed of the valve is determined by a general idling speed, and can be varied to provide variable valve timing with the motor. The final assembly eliminates a majority of the moving parts currently used in camshaft systems, like the cam, camshaft, rocker arm, push rod and springs, and results in a significantly lighter valve actuation system. By eliminating the translatory motion of valves, the problem of valves slamming on the valve seats at high velocities is eliminated, thus greatly reducing engine wear.



[1] http://www.geocities.ws/lucfoekema/KreidlerV6.html

[2] http://www.douglas-self.com/MUSEUM/POWER/unusualICeng/RotaryValveIC/RotaryValveIC.htm#now

[3] http://www.pattakon.com/pattakonPatRoVa.htm