🔍 Key Concepts

• Four-stroke diesel engine cycle (intake, compression, power, exhaust) • The meaning of the word event in engine theory versus casual language • How each stroke in the cycle can involve a specific gas process in the cylinder

💭 Think About

• Think about how textbooks describe the four "events" of a diesel cycle: what happens during each stroke in terms of air and gases? • Does the term "event" usually mean just one particular moment in combustion, or can it describe several different processes within the full cycle? • Look at each option and ask: is this something that happens as a distinct part of the cycle, and are these parts usually all listed together in basic engine theory?

✅ Before You Answer

• Verify how many distinct strokes/events are normally named in a basic four-stroke diesel engine description. • Check whether intake, compression, power, and exhaust are considered separate events or just one of them is called "the event." • Confirm whether the definition of event in this context is limited to one process, or if it is a general term covering multiple gas-related processes per cycle.