Which characteristic of the theoretical Otto...

Question 1 / 270705eccefa1bacbc34ba4d4737d

Question 1 of 270705eccefa1bacbc34ba4d4737d

Which characteristic of the theoretical Otto cycle does not occur in the theoretical Diesel cycle.

Question 1 of 27070

Which characteristic of the theoretical Otto cycle does not occur in the theoretical Diesel cycle.

🔍 Key Concepts

• Theoretical Otto cycle vs. theoretical Diesel cycle – how combustion is modeled in each • How combustion occurs in constant-volume vs. constant-pressure ideal cycles • When, in each cycle, the fuel is introduced and ignited

💭 Think About

• First, recall what is assumed about the combustion process in the ideal Otto cycle. Is it at mostly constant pressure or mostly constant volume? • Next, recall how the ideal Diesel cycle combustion is modeled. What is held approximately constant during the main combustion phase? • Think about when the fuel is injected in a Diesel compared with an Otto (spark‑ignition) engine. How does that affect how much fuel is present at the moment of ignition?

✅ Before You Answer

• Verify which cycle assumes constant-volume heat addition and which assumes mainly constant-pressure heat addition. • Check which choice, if any, describes a behavior that is unique to the Otto cycle’s ideal combustion model and not used in the Diesel model. • Confirm which engine type has the entire fuel charge already in the cylinder before ignition and which introduces fuel during the combustion event.

Question 1 of 27070

Which characteristic of the theoretical Otto cycle does not occur in the theoretical Diesel cycle.

No pressure increase during combustion.

Rapid pressure decrease during compression.

Rapid volume increase during combustion.

The entire fuel charge is present for ignition.

Question 1 / 270705eccefa1bacbc34ba4d4737d

Question 1 of 270705eccefa1bacbc34ba4d4737d

Which characteristic of the theoretical Otto cycle does not occur in the theoretical Diesel cycle.

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Question 1 of 27070

Which characteristic of the theoretical Otto cycle does not occur in the theoretical Diesel cycle.