he following information for a compression ignition engine which operates on the ideal diesel cycle are available: • Four Stroke, six-cylinder, 3.2 L • Compression ratio: 19 • The air pressure and temperature at the beginning of the compression process are: 95 kPa and 67°C • Engine speed: 1750 rpm • Light diesel fuel with heating value of 42,500 kJ/kg • Air-fuel ratio: 28 • Combustion effi
The following information for a compression ignition engine which operates on the ideal diesel cycle
are available:
• Four Stroke, six-cylinder, 3.2 L
• Compression ratio: 19
• The air pressure and temperature at the beginning of the compression process are: 95 kPa
and 67°C
• Engine speed: 1750 rpm
• Light diesel fuel with heating value of 42,500 kJ/kg
• Air-fuel ratio: 28
• Combustion efficiency: 98%
Assuming constant specific heats at 850 K, determine
a) The cut off ratio
b) The maximum temperature in the cycle
c) The net work output per cycle
d) The thermal efficiency
e) The mean effective pressure
f) The net power output
g) The specific fuel consumption in g/kWh (the ratio of the mass of the fuel consumed to the
net work produced)
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