SU1213234A1 - Carburetor for internal combustion engine - Google Patents

Description

12132: iA

2. The carburetor of p, 1, o tl and ramenmenirCH, than the diameter of a small number of s and n with the fact that the small diffusion (the arbor and outlet area of the flue in the area of the main window of the sprayer The dose-HOI-0 window has a diameter of 1.2–1.5.

This invention relates to mechanical engineering, in particular to carburetors for an internal combustion engine,

The purpose of the invention is to improve fuel economy by optimizing the consumption characteristics of the carburetor.

Fig. 1 shows schematically the proposed carburetor for an internal combustion engine, a section; Fig. 2 shows a mallow carburetor diffuser j; fig. 3 shows an embodiment of a small carburetor diffuser.

The carburetor for an internal combustion engine (FIG. 1) includes a housing 1 with a flow channel 2, in which a large 3 and a small 4 diffusers are made, the main metering system has a -5 and 6 air jets, an emulsion well 7 and a sprayer 8, an output the window 9 of which is made in the small diffuser 4, and the system of idling, having an emulsion canap 10, equipped with a fuel 11 and 12 air jets, the air jet connected to the air channel 13, and passing through the window 14, filled in the small diffuser 4. Center pass 14 of the air channel 13 of the idling system is located on the axis of the small diffuser 4, and the center of the output window 9 of the dispenser 8 of the main metering system is located at a distance O, 1-0.5d from the axis of the small diffuser 4, where d is the minimum diameter of the small diffuser 4 (Fig, 2).

The small diffuser 4 in the zone of the passage of the through-hole 14 of the air channel 13 has a diameter 1.2-1.5 times smaller than the diameter of the small diffuser 4 in the zone of the outlet window 9 of the spray gun 8 of the main metering system.

In case 1, there is a float chamber 15, which, via the fuel jet 5, communicates with carburettor dosing systems, and in flow through

Channel 1 has a throttle valve 16, in the turning zone of which, the exit windows 17 and 18 of the emulsion channel 10 of the idle system are ejected.

Small diffuser 4 (figure 2) is made in the plug-in element 19 connected to the housing 1 with jumpers 20 and 21, in the last of which holes 22 and 23 are made, the first

of which forms part of the air channel 13 with the passage window 14, and the second - part of the sprayer 8 with the exit window 9.

The carburetor works as follows.

With a low frequency of rotation of the engine shaft when it is operating at idle mode, when throttle valve 16 is in the closed position and there is a significant vacuum in the throttle space, fuel is supplied through the fuel jet 5 of the main metering system and the fuel jet 11 of the idling system a channel 10J into which air is also supplied through the air channel 13 through the passage window 14 and the air jet 12. Forming with the emulsion in the emulsion channel Yu through the output window 18 enters B the throttling space of the flow channel 2, and through the output window 17, additional air is supplied to the emulsion, which reduces the vacuum in the cold run system.

Pg And the gradual opening of the throttle valve 16 output window 1 pop; g, goes to the zone of high rarefaction, in connection with which through it and 1- (from the output window 18 of the emulsion 3

It goes into the throttle space on the yBejrH4eHHoM amount, ensuring that the engine doesn’t work without engine.

As the throttle valve further opens, the vacuum at the exit ports 17 and 18 decreases and at the same time the vacuum in the small diffuser 4 increases. This leads to a decrease and cessation of the fuel supply from the idle system, and fuel begins to flow into the engine through the output window 9 of the main dispenser . When significant dilutions in the small diffuser 4 (as the frequency of rotation of the engine shaft and its load increases) additionally (to the fuel from the main metering system) begins to flow fuel through the passage opening 14 of the air channel 13, and through the last post 133234Л

I am sick of the emulsion, because air flows through the outlet openings 17 and 18 into the emulsion channel 10. At the same time, the indicated locations of the outlet window 9 of the sorter 8 and the through passage window 14 of the air channel 13, as well as the specified small diffuser in the zone of these windows prevent the mixture from being depleted in a range of 60-90% of the nominal power and, thus, ensures optimum carburetor flow characteristics and improved fuel efficiency,

15 In the embodiment of the small diffuser 4 shown in FIG. 3, the latter, in the zone of the exit window 9, of the splitter 8 has a sharp expansion 24, which provides an increase in the enrichment of the mixture fed to the engine during heavy loads.

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Editor A. Kozoriz

Compiled by L. Sinai

Tehred A. Kikemezey Proofreader C, Cherni

Order 766/46 Circulation 524 Subscription of the USSR State Committee

for inventions and discoveries 113035, - Moscow, Zh-35, Raushsk nab., 4/5

Branch PPP Patent, Uzhgorod, st. Project, 4

Fig.Z

Claims (2)

(56) U.S. Patent No. 2,676,004, cl. 261-41, published. 1954.: 1. CARBURETOR FOR THE INTERNAL COMBUSTION ENGINE, comprising a housing with a flow channel in which large and small diffusers are made, the main metering system with Fig. 1 with a dust collector having an exit window in a small diffuser, and an idle system. a course with an emulsion channel provided with fuel and air jets, the air nozzle being connected to an air channel having a passage window made in a small diffuser, characterized in that, in order to save fuel by optimizing the flow characteristics of the carburetor, the center of the passage window of the air channel of the idle system the stroke is located on the axis of the small diffuser, and the center of the outlet window of the nozzle of the main dosing _ system is located at a distance of $ 0.1-0.5J from the axis of the small diffuser, where J is the minimum diameter of the small diffuser. SU .. "1213234 2. The carburetor according to claim 1, is smaller than the diameter of the small part by the fact that the small diffuser is located in the outlet fuser in the zone of the passage of the main window of the nebulizer main dose window has a diameter of 1.2-1.5 blowing system.