Spark & Compression Ignition Engines

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SPARK IGNITION ENGINE OPERATION • Intake Stroke: During the intake stroke of a spark- ignitioniti engine, the piston it is moving down. The intake valve is open. Air-fuel mixture flows throughh the intake port and into the cylinder. The fuel system supplies the mixture. it As the piston it passes throughh BDC, the intake valve closes. This seals off the upper end of the cylinder.
SPARK IGNITION ENGINE OPERATION • <strong>Compression</strong> Stroke: After the piston passes BDC, it starts moving up. Both valves are closed. The upward moving piston compresses the airfuel mixture into a smaller space, between the top of the piston and the cylinder head. This space is combustion chamber. The mixture is compressed 1/8 or less of its original volume. The amount that the mixture is compressed is compression ratio.
Page 1 and 2: MENG422 AUTOMOTIVE ENGINEERING I SP
Page 3: SPARK IGNITION ENGINE INTRODUCTION
Page 7 and 8: SPARK IGNITION ENGINE OPERATION •
Page 9 and 10: System Common Rail
Page 11 and 12: DIESEL ENGINE OPERATION • Compres
Page 13 and 14: DIESEL ENGINE OPERATION Exhaust Str

Spark & Compression Ignition Engines

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