What are the methods other than indicator diagram through which power developed by a cylinder can be calculated?

1. Fuel Pump Index method to calculate power

• The fuel pump index is used to find out the mean effective pressure from the nomogram graph. Again form the graph, the MEP at a specific speed gives the engine bhp.
• This method should only be used as a quick (rough) estimation, because the fuel oil, as well as the condition of the fuel pump, may have great effect on the index. In particular, worn fuel pumps or suction valves tend to increase the index, and will thus result in a too high power estimation.
• Chart I: Draw a horizontal line from the observed fuel pump index to the nomogram curve, and then a vertical line down to the observed engine speed on Chart II. From this intersection a horizontal line is drawn to the effective engine power scale.

FIG.: FUEL PUMP INDEX METHOD