SU1544999A1 - Four-stroke ic-engine - Google Patents

Abstract

The invention can be used in pressurization systems for internal combustion engines. The purpose of the invention is to increase efficiency. The engine contains a drive supercharger 1 with an additional turbine 2 installed on its shaft, which is connected through a gear transmission 3 with a hydraulic clutch 4 to the engine crankshaft, at least one cylinder head 5, which is equipped with inlet 6, exhaust 7 and purge 8 valves, a turbocharger 9, the gas inlet pipe of which, through the exhaust pipe 10, communicates with the exhaust valve of each head, and the discharge pipe through the purge air supply line 11 with the air-cooler 12 connected to it is connected to 8 roduvochnomu valve head 5. Air Bleed nozzle drive blower 1 via the charge air supply conduit 13 with its included therein inlet and outlet charge air cooler 14 communicates with the intake valve 6 of each head 5, and the air intake pipe communicated with the atmosphere. The exhaust pipe 10 is made with a branch pipe 15, which is connected to an additional turbine 2. The use of a purge of the combustion chamber through the purge valve by supplying air from the turbocharger 9 makes it possible to increase the reliability of the engine and improve its efficiency. 1 hp f-ly, 4 ill.

Description

The drive blower 1 through the charge air supply pipe 13 with its inlet and the output of the charge air cooler 14 connected to the intake valve 6 of each head 5, and the air inlet is connected to the atmosphere. Exhaust pipe 10

made with a branch pipe 15, which is connected to an additional turbine 2. The use of blowing the combustion chamber through the purge valve by supplying air from the turbocharger 9 improves the reliability of the engine and improves its efficiency. 1 hp ff, 4 ill.

The invention relates to mechanical engineering, in particular to engine-building, and in particular to engine supercharging systems.

The purpose of the invention is to increase efficiency.

Fig. 1 shows a diagram of the flipholes with the injection of air into the blowing receiver from the atmosphere; 2- (engine hema in which the air inlet of the turbocharger is connected to the outlet of the cooler; FIG. 3 is the diagram of the engine pumping strokes; figure 4 is the diagram of the flow of the pump strokes and valve lift.

The four-stroke internal combustion engine contains a drive supercharger 1 with an additional turbine 2 installed on its ala, its own shaft through gear transmission 3 with a hydraulic clutch 4 with an engine crankshaft, at least one cylinder head 5, exhaust 7 and purge 8 valves, a turbocharger 9, the gas inlet pipe of which through the exhaust pipe 10 is connected to the exhaust valve of each Govory, and the discharge pipe through line 11 of the purge air supply with the air cooler 12 connected to it is connected to the production valve 8 of the head 5. Air inlet of the drive blower 1 through the supply line 13 of the charge air supply with the inlet and outlet cooler 14 connected to the inlet valve 6 of each head 5, and the air inlet is in communication with the atmosphere. The exhaust pipe 10 is made with a branch pipe 15, which is connected to an additional turbine 2. In the variant

five

The gate of FIG. 1 is connected to the atmosphere by the air inlet to the compressor 9: in the engine variant of FIG. 2, the air inlet of the turbocharger 9 is connected via channel 16 to the outlet of the charge air cooler 14.

The four-stroke internal combustion engine works as follows.

After compression and working strokes, exhaust gases are released through exhaust valve 7 into exhaust pipe 10, the gas pressure in which Pa is greater than the charge air pressure. The exhaust gases are fed through the pipeline 10 and the outlet pipe 15 to the turbine of the turbocharger 9 and the additional turbine 2. Provided that P (more Pjn-t, the excess power of the additional turbine 2 is transmitted through mechanical transmission 3 to the engine crankshaft. At low loads, when the power of the additional turbine 2 is not enough, and the charge air is inexpedient to be fed into the cylinder; the hydraulic clutch 4 of the blower shaft 1 is disconnected from the engine shaft.

Before the top dead center, the purge valve 8 opens, and the purge air from the turbocharger 9 is supplied to the engine cylinder under pressure P- greater than the pressure P in the exhaust pipe 10, and blows the combustion chamber. After the top dead center, the exhaust valve 7 closes and the intake valve 6 opens. After the intake valve opens, the purge valve 8 closes, the cylinder is filled with charge air and the cycle repeats. The nature of the flow of the pressure curve in the engine cylinder in the period

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Claims (2)

Claim 1. Four-stroke internal combustion engine containing at least one cylinder head, which is equipped with inlet, outlet and purge valves, turbocom-. a pressor whose gas inlet pipe is connected through the exhaust pipe to the exhaust valve of each head, and the discharge pipe through the purge air supply line is connected to the purge valve charge air connected to the air pressure pipe of the drive supercharger and communicated with the inlet valve of each head, characterized in that, with the aim of higher Ia efficiency, dvigazel equipped with an additional turbine mounted on a shaft driving the supercharger air cooler and the charge air cooler, with a being the exhaust trubopvovod vypol20 nen with a vent pipe, the latter. connected to an additional turbine, the air cooler is included in the purge air supply line, the charge air cooler is inlet and is included in the outlet to the charge air supply pipe, the air inlet port of the drive supercharger is in communication with the atmosphere. 2. The engine according to claim 1, with the requirement that the air inlet port of the turbocharger is connected via a channel to the outlet of the charge air cooler. figs