A four stroke-eight cylinders compression ignition engine is used for traction applications has the following specifications: engine rated power 160 Kw, piston stroke/cylinder diameter 0.87, mean piston speed 8.5 m/sec, the fuel used has mass analysis: 87% C and 13% H2. An experiment is done on the engine, and the following reading are taken: excess air factor 1.3, brake thermal efficiency 0.364, pressure drop across the air box orifice was 30 cm H2O, rate of cooling water was 2.78 Kg/sec, temperature rise of cooling water across the engine was 10 C, the percent of the unaccounted heat loss was 9 % of the total heat added from the fuel consumption, density of fuel used 0.83 gm/cm3, and temperature and pressure of the ambient air 300 K and 1 bar.

Calculate:

1- the diameter of the air box orifice [cm], 2- the temperatures of exhaust gases,

3- the volumetric efficiency,

and 4- the volume of the fuel tank sufficient to engine operation at rated power for distance of 400 Km at 80 Km/hr.