The invention provides a turbo supercharged engine comprising a main motion system, an air distribution system, an air inlet/outlet system, a cooling system, a lubricating system, an igniting system, an electric spraying system, a crank box forced ventilation system and a gas evaporation and purification system. According to the technical scheme, an engine oil nozzle for a cooling piston is mounted on a main bearing base in an inclined direction; a manifold cushion exhaust port is formed by three layers of stainless steel boards with seams; a conical body wear-resistant material and a correspondingly arranged valve base wear-resistant working end face near an annular groove are arranged at the position of the edge of a conical valve sheet of a valve; an air cylinder body is fixedly arranged at the lower part of a main bearing cover; the main bearing cover is mounted on a reinforcing board on a boss; and a reinforcing board oil falling hole is reversed on the part, corresponding to the crank, of the reinforcing board. By utilizing an air inlet variable time correcting technology, the oil consumption of an engine is reduced; the piston cooling nozzle is mounted on the main bearing base of the air cylinder body; the air inlet amount is increased; the average effective pressure of the engine can be improved; the mechanical strength of related parts can be reinforced; and the power adaptability of the engine can be improved.