The 4-stroke timing diagram shows the sequence of valve and piston movements, while the PV diagram illustrates pressure-volume changes during the engine cycle.

Study Notes

4-Stroke Engine and PV Diagram

The exhaust stroke occurs in the 4-stroke engine after the power stroke, which is the stage where the combustion of fuel takes place.
The power stroke corresponds to the maximum pressure and temperature points on the PV diagram, as it is the stage where the energy released from combustion is converted into mechanical energy.

4-Stroke Timing Diagram and PV Diagram

The 4-stroke timing diagram and the PV diagram are closely related, as the timing diagram shows the sequence of events in the engine, while the PV diagram shows the pressure and volume changes in the cylinder during these events.
The timing diagram helps to identify the specific stages of the engine cycle, which correspond to specific points on the PV diagram.

Test your understanding of the relationship between the 4-stroke timing diagram and the PV diagram in internal combustion engines. Answer questions about the timing of the exhaust stroke, the stroke corresponding to maximum pressure and temperature, and the overall relationship between the timing and PV diagrams.