A 4-cylinder 4-stroke petrol engine has bore 6.5 cm, stroke 95 mm, speed 3000 rpm, clearance volume 65 cc, relative efficiency 50%, calorific value of fuel used 46 MJ/kg. When tested it develops 70 Nm...

A 4-cylinder 4-stroke petrol engine has bore 6.5 cm, stroke 95 mm, speed 3000 rpm, clearance volume 65 cc, relative efficiency 50%, calorific value of fuel used 46 MJ/kg. When tested it develops 70 Nm torque. Determine, specific fuel consumption, brake mean effective pressure of the engine.