RU2018017C1 - Method of operation of internal combustion engine and internal combustion engine - Google Patents

Abstract

FIELD: power engineering. SUBSTANCE: steam and fresh charge are fed to cylinder, compressed, ignited, expanded, and discharged. Steam is injected to a space between two pistons. The internal combustion engine has cylinder 1, piston 2 and free piston 10 received in the cylinder. A means 11 for supplying steam is provided between the pistons. EFFECT: enhanced efficiency. 2 cl, 1 dwg

Description

 The invention relates to power engineering.

 A known method of operation of an internal combustion engine by introducing steam and fresh charge into the cylinder, compressing, exploiting, expanding and releasing exhaust gases.

 A combustion engine is known, comprising at least one cylinder, a piston disposed therein kinematically connected to a shaft, a cylinder cover forming a combustion chamber, an intake, exhaust, and an additional exhaust channel with the piston and cylinder.

 The participation of steam in the engine's operating process impairs the further use of combustion products for vaporization, which reduces the available evaporation of water and engine efficiency.

 The purpose of the invention is to increase effective indicators.

 This is achieved by the fact that by introducing steam and fresh charge into the compression, ignition, expansion, and exhaust gas cylinder, steam is fed into the area of the cylinder located between the two pistons.

 In an internal combustion engine comprising at least one cylinder, a piston disposed therein kinematically connected to the shaft, a cylinder cover forming a combustion chamber with an piston and a cylinder, an intake, exhaust and additional exhaust channels, the engine further comprises steam supply means to the cylinder and a free piston, while the steam supply means are installed in the combustion chamber between the planes of the piston bottoms.

 In addition, the engine further comprises stops placed in the cylinder portion adjacent to the cover.

 The drawing shows the proposed engine.

 The engine comprises a cylinder 1, a piston 2, an inlet 3 and an outlet 4 valves with channels, a turbine 5 with a compressor 6, a heat exchanger 7 that utilizes the heat of exhaust gases, a pump 8 connected from a condensed water source 9. Additionally, the engine has a free piston 10, a steam nozzle 11 (or valve), an exhaust steam valve 12 located at the junction of the elements 2.10 when the piston 2 is located at top dead center, a steam turbine 13, a cooler 14 and an ejector 15.

 Elements 4,3,11,12 work from the shaft 16, the upper part of the cylinder can be equipped with stops 17 that prevent the piston 10 from touching the valves. The piston 2 in the zone (surface) of contact with the piston 10 may have bulges or fins over the entire area of contact, facilitating the free penetration of steam into the gap between the pistons at the steam inlet.

 The gases exhausted in cylinder 1 are removed through valve 4, expanded in turbine 5 and evaporate water in heat exchanger 7. Fresh charge (fuel-air mixture) compressed in compressor 6 is introduced into cylinder 1 through valve 3 and moves pistons 2 together, 10 towards bottom dead center. The admitted charge is compressed by the stroke of the pistons and the candles are set on fire (not shown). At this moment, steam is supplied into the gap between the pistons 2.10 by means of steam injection 11 at a maximum combustion pressure in cylinder 1. Steam fills the space between the pistons, the steam supply stops and piston 2 moves down due to the expansion of combustion products and steam with a constantly increasing space between pistons. When the piston 2 is located near the bottom dead center, valve 4 opens and the exhaust gases are removed from the cylinder through the turbine 5, first under the influence of vapor pressure (the space between the pistons increases due to vapor pressure. At the same time, the cylinder gases are displaced) and then, when the piston 2 moves, the piston 10 abuts limiters 17, valve 12 opens and steam from the space between the pistons 2.10 is displaced by the stroke of the piston 2 with the piston 10 stationary through the valve 12, turbine 13, cooler 14, ejector 15. Condensed water from the cavities 9 n Sos 8 is injected into the evaporator 7.

 The path of movement of water is marked "a", the path of steam is "b".

 Using the method and device allows for the implementation of completely separate steam and gas cycles in one cylinder, which increases the efficiency of the engine.

Claims (3)

 1. The method of operation of the internal combustion engine by introducing steam and fresh charge into the cylinder, compressing, igniting, expanding and releasing exhaust gases, characterized in that, in order to increase effective performance, steam is fed into the area of the cylinder located between the two pistons.  2. An internal combustion engine comprising at least one cylinder, a piston disposed therein, kinematically coupled to a shaft, a cylinder cover forming a combustion chamber with a piston and a cylinder, an intake and an additional exhaust channel, characterized in that, in order to increase effective performance , the engine further comprises means for supplying steam to the cylinder and a free piston, while means for supplying steam are installed in the combustion chamber between the planes of the piston bottoms.  3. The engine according to claim 2, characterized in that it further comprises stops placed in the part of the cylinder adjacent to the cover.