Following data were collected from a four-stroke single cylinder I.C. engine at full load. Bore = 200 mm, stroke = 280 mm, speed = 300 rpm, m.e.p. = 5.6 bar, torque = 250 Nm. Oil consumption = 4.2...

Following data were collected from a four-stroke single cylinder I.C. engine at full load. Bore = 200 mm, stroke = 280 mm, speed = 300 rpm, m.e.p. = 5.6 bar, torque = 250 Nm. Oil consumption = 4.2 kg/h, C.V. =41,000 kJ/kg.

Determine:

brake thermal efficiency