SU55429A1 - A device for controlling the exhaust gas additive to the fresh side of the internal combustion carburetor engines - Google Patents

Description

It is known that the antiknock qualities of the combustible mixture consumed in an internal combustion engine are enhanced with the additive of the exhaust gases of the engine itself.

By this measure, it can be possible to increase the degree of compression of the working mixture in existing carburetor engines, which in itself increases its efficiency. At the same time, prerequisites are created for improving the workflow, since:

1, The addition of exhaust gases in a certain proportion with a fresh mixture increases the initial charge density and this accelerates the combustion process.

2. Mixing with a fresh charge, the exhaust gases raise the temperature of the latter, contributing to this rapid evaporation of fuel as it exits the nozzles, eliminating the possibility of film formation on the walls of the suction pipe and causing better mixing of the gas-air mixture with the sprayed fuel.

3. The high pressure of these gases gives the effect of pressurizing fresh charge into the cylinders.

This applies to engine operation with the throttle fully open.

At the covered throttle at all revolutions, the detonation will completely disappear, which will make it possible to work without mixing inert gases. Thus, in modes with a closed throttle, the engine can operate at high compression, extracting all the benefits of increased compression.

With the aid of the proposed fixture, an automatically controlled addition of exhaust gases to the air drawn in by the engine is carried out, depending on the amount of vacuum in the intake manifold of the engine.

The apparatus constituting the subject matter is depicted in a schematic drawing.

A branch 2 with an expansion tank 8 is connected to the exhaust duct 1 of the engine. The opposite end of the same branch 2 ends inside the air filter 4 with air ejecting nozzles. The air filter, which also serves as a fresh air mixer with exhaust gases, is connected via a carburetor 5 to the intake manifold 6 of the engine.

The latter is connected by a pipeline 7 with a valve control 8 that reacts to a change in pressure in the intake manifold.

When the engine is running with a closed throttle valve, the vacuum in the intake manifold increases, resulting in a pulse to the valve control body 8 for closing the valve. When the engine is running under normal load and with a normal number

the throttle valve of the carburetor is fully open — the vacuum in the manifold 6 is minimal — the valve 5 is at the maximum opening, which ensures the formation of the required mixture of fresh air with combustion products flowing through the branch pipe 2 through the expansion tank 5 to the nozzles of the filter 4, and the subsequent carburization of this mixture under elevated pressure and temperature conditions.

The subject matter of the invention.

A device for regulating the exhaust gas additive to the fresh charge of internal combustion carburetor engines, characterized by the application on the exhaust pipe branch 2 of an automatic valve 8, which is under a vacuum in the suction pipe.