CS255950B1 - Combustion engine and air exhaust gas mixing equipment ' - Google Patents

Abstract

The solution relates to a device for mixing exhaust gases of an internal combustion engine and air, which includes a source of compressed air and a mixing chamber. The source of compressed air consists of a turbocharger and an exhaust gas turbine. The turbine outlet is connected to the first inlet of the mixing chamber. The second inlet of the mixing chamber is connected to the discharge pipes of the blower. The exhaust pipe is connected to the common outlet of the mixing chamber.

Description

ŠMATLÁKOVÁ ANNA, PŘÍBRAM

Combustion engine and air mixing equipment

The present invention relates to an apparatus for mixing exhaust gases of an internal combustion engine and air comprising a source of pressurized air and a mixing chamber.

The source of pressure air consists of a turbocharger and an exhaust gas turbine. The turbine outlet is connected to the first inlet of the mixing chamber. The second inlet of the metering chamber is connected to the blower discharge lines. Exhaust pipes are connected to the common outlet of the mixing chamber.

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an apparatus for mixing exhaust gases of an internal combustion engine comprising an air source and a mixing chamber.

When operating diesel engines underground, great demands are placed not only on reducing harmful components in the engine exhaust, but also on the actual working environment in the mine.

Even with the use of an engine in which the exhaust gas has a low concentration of harmful constituents, there is a very real possibility of local concentrations _o in the vicinity of the mechanism, which can exceed several times the maximum permissible concentrations for the working environment. The disposal of irritating and odorous components in the exhaust gases, which primarily affect the subjective feelings of the operators of the trackless mechanisms, is also a major problem.

It is known to dilute exhaust gases by sucking in ambient air by ejectors where the energy required is extracted from the exhaust gas energy, and throttling the exhaust flow to increase velocity has a negative effect in increasing the backpressure in the exhaust manifold and deteriorating the engine operating mode, including content of harmful components in exhalations. In some engine operating modes, its efficiency is greatly reduced or eliminated.

The above-mentioned drawbacks are largely overcome by an apparatus for mixing the exhaust gases of an internal combustion engine and air that includes a pressurized air source and a directing chamber. The principle of the invention is that the source of compressed air is a turbocharger with an exhaust gas turbine. The turbine outlet is connected to the first inlet of the mixing chamber. The second inlet of the mixing chamber is connected to the blower discharge line.

An exhaust pipe is connected to the common outlet of the mixing chamber. *

The advantage of the invention is that it uses the power dissipation of the engine contained in the exhaust gas to drive the blower,

- 2, however, does not deteriorate the engine parameters and, when the turbine and blower parameters are appropriately selected, are effective in all internal combustion engine operating modes.

The accompanying drawing shows schematically an exemplary embodiment of the invention.

The apparatus for mixing exhaust gases of an internal combustion engine and air according to the invention comprises a turbocharger 20 whose turbine 21 is connected to the internal combustion engine 10 via a manifold 11. The second inlet 32 of the mixing chamber 30 is connected by a discharge line 23 to a blower 22 provided with a suction line 25. The mixing chamber 30 is connected via a common outlet 34 to the exhaust line 35. The pressure air inlet in the mixing chamber 30 is designed to avoid undesirable resistances. for the best mixing of combustion gases with air. A preferred embodiment of the invention is that a nozzle 33 is connected to the blower discharge conduit 23 and the functional portion of the mixing chamber 30 is ejector-shaped.

The exhaust gases from the engine 10 are fed through the manifold 11 to the turbine 21 of the turbocharger 20 and rotate the turbine vane wheel 21, the movement of which is transmitted by shaft to the fan wheel vane 22. Exhaust gases leave the turbine 21 via outlet 24 via the first inlet 31 to the mixing chamber 30. where the compressed air from the blower 22 is simultaneously blown through the second inlet 32 through the discharge pipe 23. into which the ambient air is sucked by the rotation of its impeller 25 through the intake pipe 25. In the mixing chamber 30, the exhaust gases are mixed with air. exhaust pipe 35.

The device according to the invention can be used in all internal combustion engines, in particular diesel engines, which operate in confined spaces such as mines, production halls and sites with the possibility of accumulating higher concentrations of exhaust gases.

Claims (3)

SUMMARY OF THE INVENTION An apparatus for mixing exhaust gases of an internal combustion engine and air, comprising a compressed air source and a mixing chamber, characterized in that the compressed air source is formed by an exhaust gas turbine (20) β turbine (21), the turbine (21) outlet (24) is connected to the first inlet (31) of the mixing chamber (30), the second inlet (32) of which is connected to the discharge pipe (23) of the blower (22), while the common outlet (34) of the mixing chamber (30) is pipe (35). Device according to claim 1, characterized in that a nozzle (33) is connected to the discharge pipe (23) of the blower (22). Device according to Claims 1 and 2, characterized in that the functional part of the mixing chamber (30) has the shape of an ejector.