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Recently Variable Valve Actuation (VVA) systems are being extensively used in internal combustion engine. In such mechanism, cams and valves are connected via intermediate lever, which allows different maximum valve lifts and duration using same cam profile. Recently, novel valve actuation mechanism like Continuous Variable Valve Lift (CVVL) is being explored to regulate engine output without conventional throttle valve and this reduces the pumping losses especially at part load in SI engines. CVVL mechanism with three elements consists of eccentric shaft, Intermediate lever and Rocker arm, which in turn control the degree of valve lift. It ensures a continuous valve lift between two extreme heights. This paper presents the development and evaluation of a Numerical model of novel CVVL mechanism on FEA platform using ANSYS 14.5, for small capacity single cylinder motorcycle engine. From the design point of view, on the strength basis all the critical components of CVVL mechanism with respective selected material were analyzed using developed numerical model in ANSYS 14.5 and compared with analytical results. Numerical results were found to be in good agreement with analytical one for the given set of conditions.
VVA-Variable Valve Actuation, CVVL- Continuous Variable Valve Lift, FEA, ANSYS.
VVA-Variable Valve Actuation, CVVL- Continuous Variable Valve Lift, FEA, ANSYS.
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