Conventional Combustion: Spark Ignition (SI - gasoline)

•High engine-out HC, CO, and NOx emissions, but low tailpipe emissions (catalyst)
•Peak thermal efficiency typically 30%, full load range possible
•The spark was created by a focused 532-nm beam from a pulsed Nd:YAG laser (100 mJ)

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Parameter Value
Fuel iso-octane (Φ=1)
Intake 21% O2
Load 4 bar IMEP
Intake T 30°C
Intake P 0.62 bar
Spark -10° ATDC
Speed 1200 rpm
Engine rc 10.75
Window 100 mm diam
Framing 7200 fps
Effective Camera Gain 300
Filter 500 nm SWP