Effect of Ethanol Content on Thermal Efficiency of a Spark-Ignition Light-Duty Engine

Table 1

Engine main characteristics.

Naturally aspirated 4-cylinder in-line, stoichiometric spark ignition
Bore × stroke	80.5 mm × 78.4 mm
Total displacement	1596 cm^3
Volumetric compression ratio	10.5 : 1
Rated power	76 kW at 5750 rpm
Rated torque	144 Nm at 4000 rpm
Number of valves per cylinder	4 (2 for intake—2 for exhaust)
NG feeding system	Electronic timed multipoint injection