In a double-acting, 8-cylinder, 2-stroke cycle, compression ignition
engine, the diameter of the cylinder is 700-mm, stroke is 1350-mm and
the piston rod diameter is 250-mm. when running at 108 rpm, the
indicated mean effective pressure above and below the piston are 5.80
bar and 4.90 bar, respectively. Calculate the brake power of the engine
using a mechanical efficiency of 80%.