Engine Compression Diagram. Next we analyze the diagram of the pressures of a real cycle as a function of the angular displacement of the axis for a 4 stroke engine. The following diagrams represent the otto cycle in a 4 stroke engine in both pv and ts coordinates.
Therefore a higher negative loop is obtained. A fundamental specification for such engines it is measured two ways. In the diagram of 4 stroke diesel engine compression stroke when both valve or close this air is compressed due to this its temperature rise and before the piston reaches the top dead center tdc diesel fuel is injected into the combustion chamber in fine atomize form.
The inlet valve open and the exhaust valve is closed.
An engine in which the combustion process in each cycle is started by use of an external spark. Fuel injection starts 5 15 before tdc. Diesel engine valve timing diagram. A fundamental specification for such engines it is measured two ways.