A four stroke ,12-cylinder diesel engine has a bore and stroke of 820 mm and 2020 mm, respectively, per cylinder. The brake mean effective pressure  pf each cylinder  is 1.2 MPa and the engine rotates at 145 rpm. The brake thermal efficiency  of the engine  is 32%, the mechanical  efficiency  is 72% and the net calorific value of the diesel is 40.75 MJ/kg.   1) which formula should be used to determine the brake power of the engine? 2) calculate the brake power of the engine (MW) ? 3) which formula should be used to determine the indicated power of the engine?

A four stroke ,12-cylinder diesel engine has a bore and stroke of 820 mm and 2020 mm, respectively, per cylinder. The brake mean effective pressure  pf each cylinder  is 1.2 MPa and the engine rotates at 145 rpm. The brake thermal efficiency  of the engine  is 32%, the mechanical  efficiency  is 72% and the net calorific value of the diesel is 40.75 MJ/kg.

1) which formula should be used to determine the brake power of the engine?

2) calculate the brake power of the engine (MW) ?

3) which formula should be used to determine the indicated power of the engine? 

4) calculate the indicated power of the engine (MW) ?

5) which formula should be used to determine the the energy supplied by the fuel?

6) calculate the energy supplied by the fuel (MW) ?

7) which formula should be used to determine the fuel consumption?

8) calculate the specific fuel consumption (kg/kWh) ?

9) which formula should be used to determine the specific fuel consumption?

10) calculate the fuel consumption (kg/h)?