Objective:
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To carry out an energy balance on a compression ignition engine running at a constant
speed for a number of loads.
Procedure:
Familiarise yourself with the engine, the recording instruments and their operation.
Observe the start up and operation of the engine as carried out by the laboratory staff.
Take readings for fuel flow-rate, air flow-rate, cooling water mass flow-rate, load and speed.
Take the following temperature readings:
Ambient temperature
Exhaust manifold temperature
Heat exchanger’s cooling water inlet temperature
Heat exchanger’s cooling water outlet temperature
Engine’s cooling water inlet temperature
Engine’s cooling water outlet temperature
Take exhaust gas analysis readings
Repeat the procedure for the five loads set by the laboratory staff.
Results:
Produce a graphs, pie chart depicting the energy balance for each load
Discuss where the extra energy (losses) has gone
Plot the following graphs:
Thermal efficiency against load (BMEP)
Specific fuel consumption against load (BMEP)
Air : fuel ratio against load (BMEP)
Note I need calculations for the following
- Brake Mean Effective Pressure:
- Air Mass Flow Rate (including the effect of atmospheric Pressure and Temperature):
- Fuel Flow rate:
- Air-Fuel Ratio:
- Brake Specific Fuel Consumption (BSFC):
- Rate of Energy Input:
- Rate of Energy to cooling water:
- Rate of Energy in Exhaust:
- Brake Thermal Efficiency:
I need all the units showing in the graphs and pie charts such as Pascal, %, W/kW etc. Everything needs to show.