Method for reducing the engine load and improving the torque in 4-stroke engines

摘要

The object of the invention is to reduce the engine load at the firing point, to improve the torque and thereby to achieve an indirect fuel saving without significantly modifying the conventional engine design. The invention merely comprises a mounted attachment on the top of the piston and a recess of identical shape in the compression space. When the mounted attachment reaches the recess on the compression stroke, the compression space is divided into 2 sub-spaces. The remainder of the stroke generates the necessary compression pressure in the recess. The quantity of fuel required for the entire power stroke is injected and ignited. Owing to the shortage of air complete combustion does not occur. The pressure acts only on the surface of the mounted attachment and its level corresponds to the ratio of the two surfaces. As the crankshaft continues to rotate, the mounted attachment leaves the recess and the highly compressed hot gases flow into the remaining compression space. There they produce a second, complete combustion, the pressure of which acts on the entire piston area and owing to the more favourable crank position generates a higher torque. This invention can be used in all operating methods.