To Study the Theoretical and Practical Valve Timing Difference of a Four Stroke Engine and to Rectify the Variation

In this paper different methods and techniques are reviewed so that we can achieve a high rate of efficiency and performance because nowadays in most of the commercial engines there is a delay in the opening of the intake valve and closing of the exhaust valve which reduces the efficiency of the engine and also reduces the performance of the engine in a very short period. The aim is to find the most efficient and economical method to rectify the difference between theoretical and actual valve timing of four stroke engine. The study concluded to propose a valve timing mechanism controlled by the solenoid valve, electrically operated to through automation for actuation of the valves.