Improvement and Dynamic Analysis of an Electromechanical Valve (EMV) System and Determination of Working Limits at Different Valve Lifts

Abstract

Abstract:In four stroke internal combustion engines, the valves control the gas inlet and outlet events. Electromechanical valve (EMV) systems perform the required valve timing independently of the crankshaft position. With this feature, EMV systems have a great potential for increasing engine performance, ensuring optimum fuel consumption and minimizing emissions. The intent of this study was to improve an EMV system, which has 12V supply potential, and to investigate dynamic performance at different lifting valve operations and then to determine the support limits of an internal combustion engine. At the end of the development of the EMV system, the transition time for 6mm valve lift was measured as 3.9 ms. Accordingly, it is evaluated that a four-stroke internal combustion engine can be supported up to 5128 rpm.