SU1562495A1 - Ic-engine - Google Patents

Abstract

The invention can be used in engine air supply systems. The purpose of the invention is to increase the cleaning efficiency of the turbocompressor flow part. The engine contains a system for supplying fuel to the cylinders, including a fuel pump 1 and high-pressure pipelines 2 supplying fuel to the injectors 3, a leakage drain line from the fuel pump 1 and nozzles 3 consisting of pipelines 4 and 5, and a turbo compressor 6 fitted with an air impeller 7 , air inlet 8 and air inlet 9 branch pipes. In the air inlet pipe 8 of the turbocharger is installed at least one spray liquid 10 washing liquid, made in the form of a tube connected to the drain line leakage. The sprayer 10 is enclosed in a casing 11, forming with it an annular gap 12 and made with an oblique cut. The annular gap 12 is connected to the air pressure port 9 of the turbocharger 6 by means of a pipe 13. The annular gap 12 forms the active nozzle of the ejector, in which an atomizer 10 is installed as a passive nozzle. increases the cleaning efficiency of the flow part of the turbocharger. 1 il.

Description

The invention relates to mechanical engineering, in particular to engine air supply systems.

 The circuit of the invention is to increase the cleaning efficiency of the flow part of the turbocharger.

The drawing shows a diagram of the internal combustion engine.

Since the air velocity in the air inlet 8 of the turbocharger 6 is 100-150 m / s, and the air velocity in the active nozzle — the ejector with a discharge pressure P of 0.15–0.2 MPa can be equal to the speed of sound, the speed of the droplet more fuel can be obtained

Co-JQ internal combustion engine intake air speed. With

the variation in the degree of expansion of the air leaving the ejector at different engine operating conditions, the speed of the outflow of air from the ejector can be both less critical and more critical, achieved due to the oblique cut of the casing 11. The selection of the size of the ejector, air consumption of fuel, the speed of the mixture of air and fuel, resulting from the ejector, can be obtained more than 200 m / s.

keeps the fuel supply system to the cylinders, including the fuel pump 1 and high pressure pipelines 2

fuel supply to the injectors 3, a drain line for leaks from the fuel pump 1 and nozzles 3, consisting of pipelines 4 and 5, a turbocharger 6, equipped with an air impeller 7, an air inlet 8 and an air-supply V branch pipe. At least one spray liquid 10, made in the form of a tube connected to the leakage drain line, is installed to the air inlet pipe 8 of the turbocharger. The atomizer 10 is enclosed in a casing 11, forming with it an ejector and an annular gap 12 and made with an oblique cut. The annular gap 12 is connected to the air-pressure pipe 9 of the turbocharger 6 by means of the pipe 13. The active nozzle of the ejector is made in the form of an annular gap 12, and the passive nozzle is integral with the sprayer 10. „

The engine works as follows.

The fuel from the fuel pump 1 is fed through a high pressure pipeline 2 to the injectors 3 and injected into the cylinders. Fuel leaks from pump 1 and nozzles 3 are diverted through pipelines 4 and 5 of the leakage line and fed to sprayer 10. Turbocompressor 6 sucks air into the air inlet 8, compresses it in the impeller 7, and delivers it to the air-inlet pipe 9. Due to the bypass part of the compressed air through the pipeline 13 into the annular gap 12, the air from the casing 11 flows out at high speed, ejecting the fuel droplets and the atomizer 10 and directing them to the flue 7 of the turbocharger 6.

air intake speed. With

Q

five

0

five

0

the fluctuation of the degree of expansion of the air leaving the ejector on various engine operating modes, the speed of the outflow of air from the ejector can be both less critical and more critical, achieved due to the oblique cut of the casing 11. The size of the ejector, air flow and fuel speed of the mixture of air and fuel arising from the ejector, can be obtained more than 200 m / s.

Additional acceleration of the fuel in the ejector increases the cleaning efficiency of the flow part of the turbocharger 6 without noticeably reducing its performance by ensuring the flushing frequency.

Claims (1)

Invention Formula An internal combustion engine containing a fuel supply system to the cylinders, fitted with a leakage drain line, a turbocharger pressurized, equipped with an air impeller and an air inlet and air-pressure nozzle j connected to at least one spray of washing liquid in the air inlet nozzle of the compressor. to the drain drain line, characterized in that, in order to increase the cleaning efficiency of the turbocompressor flow section, the sprayer is enclosed in a casing forming with it An annular gap and made with an oblique cut, and the casing and the sprayer form an ejector, in which the active nozzle is made in the form of an annular gap and connected to the air-pressure port of the turbocharger, and the passive nozzle is integral with the sprayer.