Physics · IC Engines
The air-fuel ratio required for a petrol engine during idling speed is approximately:
Verified Solution4 OptionsUpdated: October 2026👁️1 View
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- 116:1 (lean)
- 214.7:1 (stoichiometric)
- 310:1 (rich)✓
- 46:1 (extremely rich)
Correct answer
10:1 (rich)
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