Spark Ignition Engine
An engine whereby the fuel air mixture is compressed in the cylinder and then ignited with an electric spark.
Advantages over Compression Ignition:
- Low initial cost.
- Low weight for a given power output.
- Smaller size for a given power output.
- Easy starting.
- Less noise.
- Less objectionable exhaust gas odour and less smoke.
The two-stroke SI engine suffers from two big disadvantages-fuel loss and idling difficulty.
"Theory and Design of Automotive Engines", B Dinesh Prabhu, Assistant Professor, P E S College of Engineering, Mandya, KARNATAKA