Valve Timing Diagram
Valve timing diagram is the graphical representation of opening and closing of inlet and exhaust valve according to the piston movement in two stroke and four stroke engines. It shows the crank angle of exhaust valve opening, exhaust valve closing, Inlet valve opening, inlet valve closing, fuel injection starts and fuel injection ends in a full cycle of the operation
Actual valve timing Diagram of 4 Stroke Marine Diesel Engines
Actual valve timing Diagram of 2 Stroke Marine Diesel Engines
Diagrams are self explanatory if you have any doubts please comment below