Internal combustion engine

FIELD: mechanical engineering; internal combustion engines.

SUBSTANCE: proposed internal combustion engine contains crankshaft, connecting rod, piston, intake and exhaust valves, intake and exhaust manifolds, turbocompressor and nozzle to inject water installed in intake manifold before turbine of turbocompressor.

EFFECT: improved utilization of thermal energy of exhaust gases of turbocharged internal combustion engines.

1 dwg

 

The invention relates to internal combustion engines (ice) and can be used in automobile, tractor, marine and stationary engine.

Known internal combustion engines with heat supply in the working cycle at constant volume, at constant pressure, with a mixture of heat supply [1] and contains the crankshaft, connecting rod, piston pin, piston, slave cylinder, the cylinder defined therein gas valves, intake and exhaust manifold. Air enters the cylinder through the intake manifold, the pressure close to atmospheric, and the products of combustion emitted into the atmosphere through the exhaust manifold pressure. The disadvantage of this engine is low liter capacity and not using heat of exhaust gases.

Known internal combustion engines with continued expansion of the combustion products, working with a supply of heat in the working cycle at constant volume, at constant pressure, with a mixture of heat supply [2] and contains the crankshaft, connecting rod, piston pin, piston, slave cylinder, the cylinder defined therein gas valves, intake and exhaust manifold and the turbocharger. The air enters at the inlet of the turbocharger, driven from the turbine, rotating the exhaust gases, the pressure close to the atmospheres of the WMD, compressed and fed under pressure into the cylinder. The products of combustion come from the exhaust manifold to the inlet of the turbine, which perform the work and then are released into the atmosphere with a pressure close to atmospheric. The disadvantage of this engine is not using heat of exhaust gases.

The technical purpose of this invention is to increase the fullness of using the heat of exhaust gases of internal combustion engines with turbocharger.

The technical problem is solved in an internal combustion engine, containing the crankshaft, connecting rod, piston pin, piston, slave cylinder, the cylinder defined therein gas valves, intake and exhaust manifold, turbocharger, and a nozzle for injecting water into the combustion products of the fuel, installed in the exhaust manifold between the exhaust valve and the turbine.

The novelty of the invention lies in the fact that in the cavity of the exhaust manifold of the internal combustion engine with a turbocharger is installed nozzle for water injection.

During the evaporation of the injected water increases the enthalpy of the exhaust gas entering the turbine. Due to the increase of enthalpy increases the work done by the exhaust gases on the turbine, and, accordingly, increases the work done by whom what restroom, which leads to a slight increase in air pressure entering the cylinder, which leads to increased liter capacity engine.

The drawing shows a diagram of the internal combustion engine of the proposed design.

Ice contains at least the crankshaft 1, the rod 2, the piston pin 3, a piston 4, a cylinder 5, the intake valve 6, the exhaust valve 7, the inlet manifold 8, an exhaust manifold 9, the turbocharger 10 and the nozzle for injection of water 11.

The proposed internal combustion engine with the continued expansion of the combustion products of the fuel and working with a supply of heat in the working cycle at constant volume, at constant pressure, with a mixture of heat supply as follows.

Atmospheric air is supplied to the compressor of the turbocharger 10 and injected them into the inlet pipe 8, where through the inlet valve 6 enters the cylinder 5 during movement of the piston 4 from the top dead center (TDC) to bottom dead center (BDC). Further, when closed intake and exhaust valves 6 and 7 should the compression stroke when the piston 4 from BDC to TDC, and then the quantum expansion movement of the piston from TDC to BDC and the discharge stroke of the combustion products of the fuel when the piston from BDC to TDC when you open the exhaust valve 7. When the movement of products of combustion in the exhaust manifold 9 through the nozzle 11 is injected water (to increase the output pair of the EAP is ISK water can be carried out on the inner surface of the exhaust valve). On the turbine wheel of the turbocharger gas-vapor mixture is doing work, thus lowering the pressure to atmospheric.

The LIST of references

1. Internal combustion engines. 3 kN. Book 1. Theory workflow: Textbook. / Lukanin V.N., Morozov K.A., khachiyan A.S. and others; Ed. by Vinluan. - M.: Higher. HQ., 1995. - 368 S.: ill.

2. Internal combustion engines: Theory piston and combined engines. / Dinverno, Naivishego, Viewin. - M.: Mashinostroenie, 1983. - 372 S.

The internal combustion engine, containing the crankshaft, connecting rod, piston pin, piston, cylinder, intake and exhaust valves, intake and exhaust manifolds and turbocharger, characterized in that between the exhaust valve and the turbocharger in the cavity of the exhaust manifold installed nozzle for water injection.



 

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