SU1348542A1 - Supercharged i.c.engine and method of operating same - Google Patents

Abstract

The invention makes it possible to increase the power and efficiency of an internal combustion engine. For this, the engine has an extra fuel injector installed in the accumulator 6 / chamber 3. The intake cylinder is adjacent to the bottom dead center. An accumulator chamber is connected to this window. Such an embodiment of the engine makes it possible at the second stroke to take part of the compressed air into chamber 3 through the air channel 14 with valve 15. At the third stroke, the resulting air mixture is burned to the maximum combustion temperature, the combustion products are expanded at the working stroke. Through nozzle 7, fuel is supplied to chamber 3. The resulting mixture is burned in chamber 3 until the maximum combustion temperature in the cylinder is obtained. Combustion products are fed through inlet port 16 into the cylinder during expansion. 2 sec. and 1 z. p. f-ly, 3 ill. € (LK 00 00 ate

Description

one

The invention relates to mechanical engineering, namely engine building, and can be used in supercharged internal combustion engines.

The aim of the invention is to increase the power and efficiency of the internal combustion engine.

FIG. 1 is a diagram of the engine} in FIG. 2 is a diagram of a theoretical indicator diagram in an engine cylinder, where P ,, P, P is the pressure in the cylinder, V is the volume of the cylinder, a.

13

b, b

f,

d, e, 1

characteristic points of the cycle, q,, q,, q, are the heat supply, q is the heat removal. T / is the maximum temperature in the cylinder; in fig. 3 - cycle calculation results - dependence of the relative (to the initial engine) theoretical efficiency 2 and N on the ratio cp Pr / Rc where N is relative (to the initial engine cycle of the prototype) power IV temperature of gases in the cylinder (K)

The engine contains one cylinder 1, a turbocharger 2, an accumulating chamber 3, a cylinder head 4, a piston 5 moving in the cylinder 4 between the upper and lower dead points, fuel injector 6, additional fuel injector 7, intake and exhaust valves 8 and 9, power the turbine 10 and the additional exhaust valve 11. The turbocharger 2 is connected via an air-pressure and gas inlet pipes 12 and 13 to the cylinder 1, the accumulating chamber 3 is connected through the air channel 14 with the valve 15 to the cylinder 4 of the cylinder 1. The fuel injector 6 is installed The cylinder 4 is equipped with an additional inlet window 16 at a distance of 70-75% of the piston stroke from the bottom dead center of the piston 5, the accumulating chamber 3 is connected to the additional window 16 of the cylinder 1, and the additional nozzle 7 is installed in the accumulating chamber 3. Cylinder 1 is made with an additional outlet window 17 adjoining it; to the lower dead point the power turbine 10 is installed in the gas inlet 13 of the turbocharger 2, and the additional exhaust valve 11 is installed in the additional exhaust window 17, the last odsredineno gas inlet pipe 13 to the turbocharger 2.

The engine works as follows.

ten

thirty

35

2Q

40 8542; 2

In a four stroke cycle, the process is carried out in the following sequence.

First beat Filling the cylinder 1 with charge air from the turbocharger 2 through the air-inlet pipe 12 and the intake valve. 8, in the zone of the lower dead point of the piston 5, air flows through the inlet port 16 into the accumulation chamber 3.

Second beat When piston 5 moves from lower to upper dead center, air is compressed in cylinder 1, part of the compressed air is taken into accumulation chamber 3 through air channel 14 with valve 15, at the end of compression stroke in cylinder 1 p 1 fuel is fed through nozzle 6 installed in the head 4 cylinder 1.

The third beat. The resulting air-fuel mixture is burned to the maximum combustion temperature T ,, expansion of the combustion products 25 at the working stroke, fuel is additionally supplied to the accumulation chamber 3 through an additional nozzle 7, the mixture formed in chamber 3 is burned to obtain the maximum combustion temperature T. in cylinder 1 and through the inlet port 16, the combustion products are fed into the cylinder 1 during expansion.

The fourth beat. Exhaust gases are released from cylinder 1 and accumulation chamber 3 through exhaust valve 9, gas inlet 13 and additional exhaust port 1 7 with valve 11.

The exhaust gases are expanded in the power turbine 10, in the turbocharger 2, and do useful work.

In a two-stroke cycle, the accumulation chamber 3 is blown and filled simultaneously with the cylinder 1, and the output (outflow) of the high-temperature gas-air mixture from it is carried out in the process of expansion of the main working fluid in the cylinder 1.

40

50

Claims (3)

1. The method of operation of the internal combustion engine with supercharging by filling the cylinder with charge air, compressing the air in the cylinder, taking part of the compressed air into the accumulating chamber, feeding the fuel into the cylinder at the end of the compression, burning the at the same time, the air-fuel mixture yawned to the maximum temperature of combustion, the expansion of combustion products at the working stroke, and the release of waste. melting gases from the cylinder and expanding them in a turbocharger, characterized in that, in order to increase power and efficiency, fuel is additionally supplied to the storage chamber, the resulting mixture is burned to achieve the maximum combustion temperature in the cylinder and the combustion products are fed, 2. A supercharged internal combustion engine containing at least one cylinder, a turbocharger connected through an air-pressure and gas-inlet nozzles to the cylinder, an accumulation chamber connected through an air channel with a valve to the cylinder head, a piston moving in the cylinder between the upper and lower dead points and fuel 0 five five 0 a nozzle installed in the cylinder head, characterized in that, in order to increase efficiency, the engine has an additional fuel nozzle, the cylinder is provided with an additional inlet window adjacent to the piston dead center, the accumulator chamber is connected to the additional cylinder window, and the additional nozzle is installed in accumulating chamber. 3. The engine of claim 2, which is equipped with a power turbine and an additional exhaust valve, and the cylinder is made with an additional exhaust window adjacent to the bottom dead center, the power turbine installed in the gas inlet of the turbocharger, and An additional, exhaust valve is installed in the additional exhaust port of the cylinder and the latter is connected to the gas intake port of the turbocharger. Tf idem uz.2