General Studies · IC Engines
At what point in a two-stroke spark ignition engine cycle is the air-fuel mixture ignited by the electric spark?
Verified Solution4 OptionsUpdated: October 2026👁️1 View
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- 1At the end of the compression stroke, just before the piston reaches TDC✓
- 2When the transfer port opens fully
- 3At the beginning of the stroke, when the piston starts moving up from BDC
- 4Immediately after the inlet port closes
Correct answer
At the end of the compression stroke, just before the piston reaches TDC
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