SU1343071A1 - Carburetor for internal combustion engine - Google Patents

Abstract

The invention makes it possible to turn 1) the quality of the preparation of the air-fuel mixture in the x.x mode. The walls 2 of the carburetor body form a mixing chamber. On the wall 2 there are two grooves 9 arranged at an angle to the axis of the bore hole and to the plane of the throttle valve 3 in its closed position, in which the grooves 9 have windows communicated with the rear axle and throttle spaces 4 and 5. The option is to the carburetor, when a number of grooves are made on the wall 2, which are evenly spaced around the perimeter of the valve 3. Passage} The first sections of the grooves 9 are in the air. Air flows through the grooves 9 at a critical speed, since window grooves soobge e- & -. with pre-throttle and throttling spaces, have a certain CTenenji tangency with respect to the wall 2. In the throttle simplicity, the air is twisted into an active vortex coil, which, in turn, is ejected from the fuel emulsion coming out of the controlled fuel nebulizer 7, forms a homogenous combustible mixture. 1 zi (| g-ly, 4 il. e (L co 4 oo o

Description

one

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

The aim of the invention is to improve the quality of preparation of the fuel-air mixture at idle.

Figure 1 shows the proposed carburetor for an internal combustion engine, section; figure 2 - section aa in figure 1; on fig.Z - carburetor dp engine internal sgo

run, embodiment; 4 to 15 of the foot opening 9 of the housing, in connection with

section bb in fig.Z.

The carburetor for an internal combustion engine (FIG. 1) includes a housing 1 with a through hole, the walls 2 of which form a mixing chamber, a rotary throttle valve 3 located in the mixing chamber and a section of the latter, when closed, to the throttle and throttle 4 and 5, and CHCTeNry idling, having a channel 6 for supplying fuel emulsion, adjustable fuel sprayer 7, communicated with throttle space 5 of the mixing chamber, and unregulated fuel sprayer 8, communicated with d the throttle space 4 mixing chamber. On the wall 2 of the bore hole there are two grooves 9 arranged at an angle to the axis of the bore hole and to the plane of the throttle valve 3 in its closed position, at which the grooves 9 have windows communicated with pre-throttle and throttle spaces 4 and 5. The carburetor body 1 is fixed to intake manifold 10.

The carburetor works as follows.

When the engine is operating at idling conditions, when throttle valve 3 is in the closed position and fits tightly with its end faces to the wall 2 of the bore, the fuel emulsion and the air under the critical pressure drop created by the engine operation pass into the throttle space 5 of the mixing chamber The corresponding dosing elements. For the fuel emulsion, the metering element is an adjustable fuel gun 7. to which

The fuel emulsion enters channel 6. The airflow of the dispensing element is the flow sections of the grooves 9 formed by the edges or front faces of the throttle valve 3 and the perimeters of the sections of the grooves 9. Air flows through the grooves 9 at a critical speed, since the grooves are 9 communicated with the pre-throttle and rear part spaces 4 and 5, have a certain degree of tangency with respect to the wall 2 passage

than in the throttling space, air is swirled into an active vortex flow, which, interacting with the fuel emulsion coming out of the adjustable fuel atomizer 7, forms a homogeneous combustible mixture supplied through the intake pipe 10 to the combustion chambers of the engine cylinders. The resulting torque is maintained in the flow of the combustible mixture as it enters the inlet pipe 10 and contributes to the uniform distribution of the mixture through the combustion chambers, which, together with

ensuring the homogeneity of the mixture leads to an improvement in the economic and toxic characteristics of the engine at idling conditions.

On partial load modes and

when the throttle valve 3 is in the open position or the fully open position, the grooves 9 have almost no effect on

adjusting characteristics of carburetor metering systems, which ensures the stability of the characteristics of the latter.

In the embodiment of the carburetor (fig. 3 and 4), a plurality of grooves 9 are made on the wall 2 of the through passage of the housing 1, which are evenly spaced around the entire perimeter of the throttle valve 3 when it is closed and have windows communicating with the throttle and throttle spaces 4 and 5, and all the grooves 9 are at an angle to the axis of the bore of the housing 1 and to the plane of the throttle valve 3.

The operation of the carburetor in FIGS. 3 and 4 is similar to the operation of the carburetor in fi 1 and 2.

31

Claims (2)

Invention Formula 1. A carburetor for an internal combustion engine, comprising a housing with an orifice, the walls of which form a mixing chamber, a rotating throttle valve located in the mixing chamber and dividing the latter in the closed position into the pre-throttle and puzzling spaces, and the idle system having in the housing, nozzles communicated with a mixing chamber, characterized in that, in order to improve the quality of preparation of the fuel-air mixture at idle mode, on the passage wall second openings formed on the housing men3430714 At least one groove is at an angle to the axis of the bore hole and to the plane of the throttle valve in its closed position, at which the groove has windows communicated with the throttle body and the trash spaces. 2. The carburetor according to claim 1, about tl and - due to the fact that the body has additional grooves that are angled to the axis of the bore and to the plane throttle, the grooves evenly spaced around the perimeter of the throttle when it is closed and have windows communicated with the throttle and throttle spaces. Bozdu) (. 1 -e Editor S.Pekar Compiled by L. Sinai Tehred M. Dnsyk Order 4618/32 Circulation 503 Subscription VNIIPI USSR State Committee for inventions and discoveries 113035, Moscow, Zh-35, Raushsk nab., 4/5 Production and printing company, Uzhgorod, Projecto st., 4 9. C Proofreader N.Korol