Automobile Engineering in ME
When indicated power (I.P.) and frictional power (F.P.) are known, we can calculate

Brake power
Specific air consumption
Compression ratio
Mean effective pressure

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Automobile Engineering in ME
The fuel pump of a programmed fuel injection (PFI) system operate for two seconds when the ignition is turned to the start position to

Supplies a large amount of fuel and thereby creates a choke effect
Enable the pump's fault diagnosis function to operate
Pressurise the fuel system before the engine is started
Warm up and lubricate the pump

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