FIELD: engine engineering. SUBSTANCE: cycle supplying of fuel is divided into two portions. One portion is evaporated on a hot surface. The evaporated portion is mixed with fresh charge of air to define fuel-air mixture. The mixture enters working chamber, is compressed, and is injected in the working chamber of the other portion of fuel. Both portions are ignited and burned out . Two- stroke cycle is provided in above-piston and under-piston compression spaces of the cylinder. Both portions are injected simultaneously. The igniting portion is injected in the working chamber of the cylinder. The other portion is injected to spaces which encloses the above-piston space of the cylinder and is evaporated continuously with subsequent separating into light and heavy fractions. The heavy fractions are settled out on cold surfaces of the compression space and is used for lubricating friction units. The light fractions are mixed with fresh air charge in the compressor space wherein pressure, which exceeds atmospheric pressure, is created by supercharging. After that, the mixture under positive pressure is compressed and cooled simultaneously before entering the working chamber. In so doing, pressure, which is less than atmospheric pressure, is created inside the working space of the cylinder providing high cleaning by sucking combustion products through the outlet ports. The working space of the cylinder is then filled with cooled mixture at constant pressure in the compression space. The cooled mixture is fed under pressure and heated on hot walls. The injection of the igniting portion of fuel begins when maximum compression of poor mixture is achieved in the working space. Expanding of combustion products is delayed at the instance of exhaust by creating additional resistance at the outlets ports. EFFECT: enhanced efficiency. 2 dwg
