SU958682A1 - I.c. engine emulsion carburettor - Google Patents

Description

(54) EMULSION CARBURATOR INTERNAL COMBUSTION ENGINE

one

The invention relates to mechanical engineering, in particular to systems for feeding carburetor engines.

Known emulsion carburetor engine internal combustion containing float and mixing chambers, 5 throttle and choke, channels with fuel and air jets and emulsion well 1.

A disadvantage of the known carburetor is the delay in the flow of fuel to the Q atomizer on acceleration modes due to a decrease in the level at a number of idling modes and low load conditions preceding the vehicle acceleration.

The aim of the invention is to increase fuel efficiency and reduce exhaust emissions.

The goal is achieved by the fact that the emulsion well is equipped with an additional chamber with a variable volume, the additional chamber is designed as a closed sealed container equipped with a diaphragm, and on the axis of the throttle valve there is a fixed cam connected through an adjusting screw and a double-arm lever with diaphragm airtight container.

The drawing schematically shows the proposed device.

The float chamber 1 through the fuel nozzle 2 and channel 3 is connected to an emulsion well 4, in which an emulsion tube 5 with holes 6 is installed and an air nozzle 7. The exit from the emulsion well 4 ends with a nozzle 8 located in the air duct 9. Fuel channel 10 connects the emulsion well 4 with an additional chamber And equipped with a spring-loaded diaphragm 12. On the axis of the throttle valve 13, placed in the mixing chamber 14, a cam 15 is fixed, connected through an adjusting screw 16 and a double-shouldered lever 17 and a roller 18 with a diaphragm 11. A damper 19 is placed in the air channel 9. The diaphragm is loaded with a spring 20.

The carburetor works as follows.

Claims (2)

When the engine is idling, the throttle valve 13 is closed and the pressure at the atomizer 8 is close to the atmospheric pressure. Poda. Cha fuel in the engine occurs only through the system idling (not shown). Since the atomizer 8 is located above the fuel level in the float chamber 1, and the fuel level in the emulsion well 4 is lowered due to the pressure difference on the nozzle 2, due to the fuel consumption through the idle system, an additional volume is formed between the atomizer 8 and the level in the emulsion cold 4. In this case, the cam 15 mounted on the axis of the throttle valve 13 occupies such a position that the diaphragm 12 connected with it through the double-arm lever 17 is in the extreme position, causing the largest volume of the additional chamber 11 filled with the liquid phase of the fuel. When the throttle valve 13 is opened, the cam 15, acting through a double-arm lever 17. on the diaphragm 12, will mix it inside the additional chamber II, thereby reducing its volume. The ejected fuel from the additional chamber 11 flows into the emulsion well 4. At the same time, the feature of the proposed carburetor is that the cam 15 profile, the arm lengths of the lever 17, and the diaphragm 12 are adjusted so that during acceleration at the angle of rotation of the throttle valve 13 If the additional volume in the emulsion well 4 is filled with the same amount of fuel (in the liquid or emulsion phases), which would fill it at the same angles of opening the throttle valve 13, but at the corresponding settings which came out mode (due to pressure reduction at the nebulizer 8). Since the diaphragm 12 is mechanically connected to the drive of the throttle valve 13, and the liquid fuel in the additional chamber 11 is incompressible and the diameter of the channel 10 eliminates the possibility of throttling, the filling of additional volume in the emulsion well 4 necessary for it to start up the carburetor during acceleration occurs almost instantaneously with arbitrarily sharp opening of the throttle and in full accordance with the angle of rotation of its axis. This allows the proposed carburetor to supply fuel to the atomizer 8 during acceleration at the same angle of opening of the throttle valve 13 as in the respective established modes and to ensure uninterrupted power to the engine during the transition from idle to load, which provides almost identical static and dynamic characteristics of the carburetor. After the throttle valve 13 reaches the minimum opening angle at which fuel starts to flow into the air duct 9 through the atomizer 8 (the emulsion well 4 is completely filled with the necessary quantity). Further flow of fuel from the additional chamber 11 is terminated. This is achieved by performing the profile of the cam 15 in the form of a circle. Therefore, at the opening angles of the throttle, which are larger than those indicated, the volume of the additional chamber 11 does not change. When the throttle valve 13 is closed under the action of the spring 20 installed in the chamber 11, the diaphragm 12 comes to its initial initial position, selecting exactly the amount of fuel required to fill it when it is turned on again from the emulsion well 4. Such a constructive solution provides an increase in fuel efficiency and reduced exhaust emissions. Claim 1. Emulsion carburetor of an internal combustion engine containing float and mixing chambers, throttle and air dampers, channels with fuel and air nozzles and an emulsion well, characterized in that, in order to increase fuel efficiency and reduce toxicity, exhaust gases, emulsion The well is equipped with an additional camera with a changed volume. 2. Carburetor according to claim 1, characterized in that the additional camera is made in the form of an -closed tank equipped with a diaphragm, and a cam is fixed on the axis of the throttle valve connected via an adjusting screw and a double-arm lever with a diaphragm of the sealed container. Sources of information taken into account during the examination 1. USSR Author's Certificate No. 344153, cl. F 02 M 7/00, published. 1979 J 15 18 12 L sl L. 7f6