The pressure inside the cylinder is a change at any time, so an imaginary change the size of the average pressure, the pressure to push the Pistons a trip made by the mobile power per cycle is equivalent to doing an effective Gong. The рe expressed.

The average effective pressure is a very important basic parameters. It represents the engine cylinder unit volume issued by the effective power, other conditions being equal, рe the higher the value, the diesel engine's power, the better the performance. At present, agricultural diesel, the average effective pressure for the general 4.5-8 kg / square centimeters.