What is a valve timing diagram?

What is a valve timing diagram?

A valve timing diagram is a graphical representation of the opening and closing of the intake and exhaust valve of the engine, The opening and closing of the valves of the engine depend upon the movement of piston from TDC to BDC, This relation between piston and valves is controlled by setting a graphical …

What is valve and port timing diagram?

What is Port timing diagram?

The sequence of operation of the ports is controlled by reciprocating movement of the piston in the engine cylinder. Since the one cycle is completed in one revolution of the crank, the sequence of operation of the ports can be represented in a circle (360°). This representation is known as a port timing diagram.

Where would you find a valve timing diagram?

The above processes will be operated with the sequence of operations of the valves in the Four-stroke engine. This relation between the valve opening timings to the piston moves from the Top Dead Centre (TDC) to the Bottom Dead Centre (BDC) can be represented on a circle. This is called the Valve Timing Diagram.

Why is valve timing important?

For a proper four stroke cycle, valve timing helps to operate the valves precisely to enable the valve opening of inlet, closing of exhaust, and opening of exhaust valves during each cycle. …

What is the importance of valve timing diagram?

The valve timing diagram is modified to set better charging and exhausting performance as there is always a difference between theory and practice. The valve timing diagram is drawn for two complete revolutions of the crankshaft means for one complete cycle.

What are the advantages of valve timing diagram?

Advantages of variable valve timing Reduce pumping losses. Smoother idle and low rpm running of engine. Controlling the cylinder temperature by valve overlap. Better breathing of engine and Assist the scavenging process.