SU1257267A2 - Carburetor for internal combustion engine - Google Patents

Abstract

The invention allows reducing exhaust emissions and reducing fuel consumption during idling conditions. The main air channel is divided by the throttle valve 2 into the pre-throttle and throttle spaces 3, 4, the super-fuel space of the float chamber 18 is communicated with the vortex chamber 5 at; tangential channel 10 assistance; It serves to supply air from space 3 to the entrance window of chamber 5. In one of the end walls of chamber 5, in addition to the entrance and exit windows, an additional window is made. An additional channel for supplying the combustible mixture to the throttle space is connected to the throttle space of each mixing chamber. The fuel sprayer 7 in chamber 5 is located tangentially and against the direction of the tangential channel 6. Between the main air channel and the super-fuel space 17 of the chamber 18 m. posted additional air channel. Additional channels along the path of the mixture to the throttle space 4 of the carburetor are used to process, crush and evaporate hard-to-evaporate fractions of fuel, i.e. work on the additional homogenization of a combustible idling mixture. 3 DOT. f-ly, 4 ill. f wg p

Description

The invention relates to the field of mechanical engineering, in particular to vortex mixing carburetors for an internal combustion engine,

The aim of the invention is to reduce the toxicity of exhaust gases and reduce fuel consumption during idling conditions.

FIG. 1 shows the tipper scheme of a carburetor with a vortex mixing for an internal combustion engine; FIG. 2 is a section A-A in FIG. 1; Fig 3 is a constructive implementation of the channel and its connection to the backseat space of the carburetor; in fig4, the constructive implementation of the additional channel and its connection to the throttle space of the carburetor.

The carburetor (FIG. 1) contains body 1, throttle valve 2, which divides the air duct into the throttle and choke areas.

3 and 4, respectively, a vortex chamber 5 with a tangential channel 6 for creating a vortex flow, a fuel atomizer 7 in the vortex chamber 5, located tangentially and opposite to the direction of the tangential channel 6, window 8, channel 9, channel 10 for supplying air from the drossel 3 to vortex chamber 5, channel 11 for supplying fuel to distributor 7, adjusting screws 12 and 13 for adjusting the supply of fuel and air, respectively, to the vortex chamber 5

The carburetor is equipped with an additional channel 14 and communicates with the inlet pipe 15. To supply the combustible mixture to the backspace

4, an additional window 16 is formed in the vortex chamber 5. The overfuel space 17 of the float chamber 18 is communicated via channel 10 with the vortex chamber 5 o

The greatest efficiency when using the idling system is manifested in the case of its constructive performance in carburetors with flow and main air channels (Figures 3 and 4).

The carburetor works as follows.

When the engine is at idle mode, the main air

the channel is blocked by the throttle valve 2. The air under the action of the pressure drop created by working

with the engine, between the pre-throttle and throttle spaces 3 and 4 enters the channel 10, burned through the air space 17, which contributes to the capture of volatile fractions of fuel from the float chamber 18 and, mine adjusting VRShT 13, through the tangential channel - into the mixing vortex chamber 5, Fuel under the same magnitude of the differential

5, the pressure enters from the float chamber into the vortex chamber 5 through the fuel atomizer 7, Since the atomizer 7 is placed in the right side of the channel 6 for

0 spinning the air, the fuel entering through it is initially efficiently dispersed, meeting in counterflow with the air, and taking into account that the mass of the recoil exceeds 12–14 times the mass of the fuel being metered, is twisted in the direction of air flow into the vortex flow. Here the dispersed fuel actively evaporates.

0 and intensively mixed with air to form a well homogenized combustible mixture. The swirling flow of the combustible mixture expands in the vortex chamber 5 in mutually opposite 5 directions along its axis of rotation, i.e. in the direction of both end walls of the chamber, and in equal parts by weight, it is diverted through windows 8 and 16 into the corresponding channels 9 and

0 14 for feeding the mixture into the throttle space 4.

At the same time, the combustible mixture, preserving the moment of momentum obtained in chamber 5, advances through each of channels 9 and 14 in the form of a vortex cord or spiral with large tangential peripheral speeds, therefore in channels 9 and 14 on the path of the mixture to the rear valve

In space 0 of the carburetor, work is done on the processing, crushing and evaporation of hard-to-evaporate fractions of fuel, the work on the additional homogenization of combustible

5 mixture of idling.

In the case of connecting the channel 9 and the additional channel 14 to two different throttle channels, a more even distribution of the fuel mix in the intake pipe 15 and then over the engine cylinders is achieved.

Claims (4)

Invention Formula 1, A carburetor with a vortex mixing for an internal combustion engine, containing at least one mixing chamber, a vortex chamber with that ng potential air supply channels and two face walls with inlet and outlet windows, the main air channel separated by throttle dampers on the pre-throttle and throttle spaces, the float chamber with the super-fuel space communicated by means of the tangential channel with the vortex chamber, the idling system, the main dosing system, fuel lightener, window for removal of combustible mixture, filled in one of the end walls, channel for supplying combustible mixture to rear area, channel for supplying air from the predrosal area to the inlet window of the vortex chamber, channel for supplying fuel to the fuel five 0 five To the sprayer and the adjusting screws for adjusting the amount of fuel and air supply, characterized in that, in order to reduce the toxicity of exhaust gases and reduce fuel consumption during idling, the swirl chamber is equipped with an additional window made in one of its end walls and additional feed channel combustible mixture in the throttle space of 2. The carburetor of claim 1, wherein the additional channel is connected to the throttle space of each mixing chamber, 3. The carburetor of claim 1, wherein the fuel atomizer in the vortex chamber is tangentially opposed to the direction of the tangential channel. 4. A carburetor according to claim 1, 1, which is equipped with an additional air channel located between the main air channel and the super-fuel space of the float chamber. Bo3dyx Fuel W FIG. / cpu.Z 73 73 Sriga