1. Engine Testing
Induction Power:
Break Power:
Friction Power
Fuel Consumption
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Heat losses to cooling water
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Heat losses to exhaust gases
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Mechanical efficiency
Induction efficiency
Break efficiency
Heat Supplied
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Dr.Khaled Al-Zahrani

2. Symbols
Pm = Indicated mean effective in N/m2
T = Torque N.m
L = Length of stoke in meter.
Tc = Number of cylinders
A = Area of cross-section of the piston in m2.
n = Number of working strokes or no. of explosions per minute.
N = Number of revolutions of the crankshaft per minute (engine speed).
mw = Mass flow rate of water
Tfw = Outlet temperature of water
Tiw = Inlet temperature of water
Cp = Specific heat of water (4.19 kJ/kg K)
mg = Mass flow rate of exhaust gases leaving the engine.
Cp = Specific heat of exhaust gases at constant pressure ( 0.99kJ/kg K)
tig = Engine room temperature
tfg = Temperature of exhaust gases
CV = Fuel calorific value
mf = Fuel mass flow rate
Dr.Khaled Al-Zahrani