Engine Valve Timing Diagram. Figure 173 shows actual valve timing diagram for four stroke si engine. The extreme position of the bottom of the cylinder is called bottom dead centre.
The inlet valve opens 10 0 25 0 degrees before tdc and closes 25 0. Valve timing diagram for 4 stroke c. The traditional way of showing exactly when the valve opens and closes is by the use of a valve timing diagram fig.
Engine valve timing diagram.
Download free valve timing diagram for honda engine internal combustion engines to operate the intake and exhaust valves mechanically controlled ignition systems and early electric motor speed controllers. In the previous article we discussed how it work both 4 stroke and 2 stroke diesel engines. The valves cannot open and close abruptly. Inlet exhaust valves open and close as well as the firing of fuel in a 4 stroke marine diesel engine.