JPS60166745A - Carburetor - Google Patents

Abstract

PURPOSE:To produce proper mixture gas at anytime by arranging a supersonic vibration chip below fuel level in an atomization chamber then coupling said atomization chamber through an air intake port and rich atomized fuel outlet port to the front of carburetor Venturi section and the interior of Venturi section. CONSTITUTION:The carburetor body 1 is internally provided with Venturi section 2 while a throttle valve 5 is provided at the mixture gas outlet 4 in the downstream of Venturi section 2. A rich atomization fuel outlet 11 is opened while facing with said Venturi section 2 and communicated to the upper space of atomization chamber 6 where the coil level is maintained at constant level at anytime through function of float valve 8. Said chamber 6 is also communicated through an air take-in port 10 to the intake air inlet 3 of carburetor body 1. A supersonic vibration chip 12 is provided dismountably at the lower portion of said chamber 6 to be vibrated by an oscillator 13 for controlling the amplitude through output control circuit 14 on the basis of output from engine operating condition detecting means (O2 sensor 16, tachometer 17, etc.).

Description

Detailed Description of the Invention The present invention relates to a carburetor for an internal combustion engine. Conventionally, in a carburetor for an internal combustion engine, the amount of intake air is adjusted by opening and closing a throttle valve, and the adjusted intake air passes through a portion of a venturi. The negative pressure generated during this process draws all of the fuel into the fuel chamber, atomizes it, and sucks it into the engine as an air-fuel mixture. At this time, since the liquid fuel in the fuel guide is consumed by natural vaporization due to negative pressure, it is difficult to obtain the appropriate mixture ratio of the mixture fluid depending on the engine operating conditions. It was impossible to always operate the engine at a precise mixture ratio, and the fuel particles were too coarse to create a sufficient mixture. In other words, depending on the conditions, fuel consumption was uneconomical*.

In order to eliminate the above-mentioned drawbacks, the present invention provides vibrations to the liquid fuel in the toning chamber using an ultrasonic vibrator to suspend controlled child particles in the form of mist, so that the fuel can be mixed at an appropriate loading level for the engine. The purpose is to supply the engine with air and operate it economically.

When the frequency of ultrasonic waves is changed during air intake, the violet of fine particles generated changes. The atomizing air intake is partially branched in the front, and the atomizing air intake is made to slow down during atomization, and the entire venturi of the atomizing chamber is partially opened inward. An ultrasonic vibrator is installed on the liquid level 1, and this vibrator? Connect to external oscillator. This oscillator is used for exhaust pipe exhaust.
The ignition output is controlled by the output control circuit that receives fbII # from the output of the sensor, tachometer output, air flow meter output of intake air volume, intake air temperature (CA line sather mister), engine temperature, other control signals, accelerator opening, etc. Make it available for wholesale. The ultrasonic vibrator supplies atomized fuel to the atomizer according to the oscillator output.

With this kind of definition, the fuel can be atomized into particles of about 3μ to ioμ, which makes it possible to maintain an ideal air-fuel mixture, which makes it possible to increase operating efficiency, and the control of engine output can be done electronically based on external control conditions. Since it is possible to control the distance, it is possible to simplify the command.

This invention also provides that the concentrated atomized fuel is supplied directly to the auxiliary combustion chamber without being mixed into the mixed air of the carburetor by a separate supply pipe from the concentrated atomized fuel outlet that supplies the fuel to a part of the bench area, and that the concentrated atomized fuel is supplied directly to the auxiliary combustion chamber without being mixed with the mixed air of the carburetor. By supplying the air-fuel mixture to the main combustion chamber, it can be used as an efficient carburetor for an internal combustion engine equipped with auxiliary combustion.

Furthermore, if the present invention is used in combination with a conventional spray type, and a part of the venturi is opened directly on the fuel supply pipe from the fuel tank liquid circle in the toning chamber, more delicate adjustment of the air-fuel mixture is possible.

Furthermore, when the present invention is used as a carburetor having an overfuel supply function during cold warm-up of an internal combustion engine, the fueling chamber air intake port t is provided independently of the throttle valve passage, and the throttle valve is closed. However, most of the air-fuel mixture enters the tinning chamber through the string air intake and takes the route to the atomized fuel outlet, making it possible to create a thick fuel supply state during warm-up by controlling the output control circuit. .

Furthermore, in the case of rapidly accelerating or decelerating an internal combustion engine, the fuel supply cannot follow the movement of the throttle valve, and therefore the engine is temporarily overcharged or overfueled. When a situation occurs, the internal combustion engine stops or incomplete combustion causes emissions of exhaust gas control components, but this can be done by operating the throttle valve with a delay through the accelerator depression mechanism. At the same time, the output is controlled by the detection output of the accelerator operation detection mechanism.
The atomized fuel can be set by ultrasonic oscillation vibration consonant control through the 41 circuit to eliminate the above-mentioned fc disturbance.

Next, in internal combustion @Ran, if the air-fuel mixture is lean, the output will decrease and the rotation speed will drop, and if the mixture is thick, the output will increase and the rotation speed will rise. Therefore, the accelerator displacement t If detected by the accelerator opening detector and changed the ultrasonic oscillation via the output control circuit to adjust the fuel atomization tht'4 and change the limit of the air-fuel mixture, the rotational speed of the internal combustion engine will follow accordingly. and change. This means that the throttle valve can be omitted. This can also be done in the generators of the Sengoku era, etc., by inputting the generator load change 110 to the output control circuit instead of opening the accelerator, omitting the mechanical part and controlling the rotation at a constant speed. .

Further, the measures taken by this invention against NOx, which is a subject of pollution, are as follows. In other words, the amount of NOx generated is greatly affected by the fuel temperature, so the most effective method is to lower the combustion temperature, but in this invention, a water atomization chamber is provided separately from the fuel atomization chamber, and the fuel In the same way as atomization, water is efficiently converted to 2 h using an ultrasonic vibrator, and the atomized water r + 1 k is sprinkled on a part of the venturi so that it is evenly dispersed in the air-fuel mixture, and the engine is heated during combustion. It is possible to prevent the temperature from becoming high and therefore to suppress the generation of NOx. If there is insufficient space to install this water atomizer in the vaporizer section, it may be installed between the air cleaner and the vaporizer.

The invention will now be described in detail with reference to non-limiting embodiments thereof, with reference to the drawings in which: FIG.

First of all, referring to Fig. 1, l is the carburetor main body, and there must be a part of the venturi inside, the intake air intake port 3,
Air mixture outlet Hiroshi and throttle valve! is provided.

t is an atomization chamber, and fuel is constantly supplied into the atomization chamber from the drainage pipe 7, and the fuel liquid taj 5' is always kept constant by the action of the float pal fl. Atomization chamber t
is connected to the carburetor main body in front of the venturi part through the bucket rich air intake port 1ovcx, and the thick atomized fuel outlet ll from the atomization chamber t opens into the venturi part. An ultrasonic vibrator/J is removably provided below the fuel surface 2 (in the illustrated example, it forms part of the bottom of the atomization chamber B), and is vibrated by an oscillator 13. Oscillator 13
The amplitude k Il is controlled by the output control circuit /4', and if this output control circuit l≠fd ell , then the throttle valve opening detection circuit l! , exhaust pipe 1 non'A0
2 sensor 16, tachometer output 17, intake air flow meter, intake air temperature (CA line thermistor), engine temperature CCA & thermistor, etc.), and other control signals are received to perform all control operations.

The degree of fuel atomization varies depending on the degree of vibration of the vibrator, and unlike conventional atomization due to a vacuum, the fuel is atomized according to the operating conditions due to the Venturi effect, so it can be adjusted according to the operating conditions of the engine. It is possible to fully supply the appropriate mixture depending on the situation. Note that /I in the figure is a shielding plate for coarse particles.

The embodiment shown in FIG. 1 is almost the same as the one shown in FIG. 1, but in FIG. fuel outlet l
The difference is that there is a barrier. Of course, this device
The secondary combustion m , to effectively operate the internal combustion engine.

The embodiment shown in FIG. 3 is also almost identical to that shown in FIG. A second venturi part -' is provided, and the Isoshi atomized fuel outlet If shown in FIG.
A first venturi is opened at the peripheral edge of the first venturi and immersed below the fuel liquid surface.The first venturi is opened at the center of the second venturi.

The minimum fuel under each operating condition is supplied by the liquid fuel spray pipe 20, while the amount of condensed fuel that varies depending on each operating condition is supplied from the atomized fuel outlet ii.

Although it lacks in terms of atomization of the fuel supplied to the air-fuel mixture, the atomized fuel supply part takes care of changes in the appropriate mixture ratio under various operating conditions, allowing for more delicate control and improving the atomized fuel supply mechanism. It has features that can prevent the internal combustion engine from stopping in the event of a failure, and can also reduce power consumption in the fuel supply mechanism.

The embodiment shown in FIG. are different. It can be used as a ventilator with an excess fuel supply function during cold heating operation of an internal combustion engine. In this figure, when the throttle valve j is fully closed, the mixture exiting from the mixture outlet mostly passes through the casting chamber 6 from the atomizing air intake 10 and exits from the sludge fuel outlet //'i. At this time, the output control circuit/Hiro is connected to the operating temperature detection circuit (OA [thermistor] λ/) between the internal combustion primary, and the air-fuel mixture necessary for warming up is maintained. It provides the necessary output of 1.1-Qk. As the machine is gradually removed and the temperature reaches normal operating temperature, the output of the operating temperature detector changes and returns to the proper mixing ratio via the output control circuit. This device? If used, a choke valve [can be omitted.

In the embodiment shown in FIG. 5, the carburetor itself is exactly the same as the one shown in FIG. 1, but measures against sudden acceleration or deceleration of the internal combustion engine are proposed. In the case of sudden acceleration or deceleration, the fuel supply cannot keep up with the MJ of the throttle valves, resulting in a temporary supercharging or overfueling state, which may cause the internal combustion engine to stop or become incomplete. A situation such as the emission of exhaust gas control components due to combustion occurs, but in the illustrated embodiment, the actuation of Ul, On the other hand, an accelerator taisaku detection circuit is provided, and its output is connected to the output control circuit/Hiroshi, so the operation of the accelerator 2≠ is controlled by the dan-no-mi via the throttle valve. - It is transmitted with a delay due to the action of the g mechanism J3.During this delay time, the accelerator excitation detection circuit 4
Output control circuit/ψ, oscillator/3. All necessary raw materials can be set through the ultrasonic transducer 7.2 and ultrasonic transducer 7.2, thereby eliminating the possibility of the above-mentioned supercharged air condition or overfuel condition.

The embodiment shown in FIG. 6 is the throttle valve of the carburetor of this invention? In an internal combustion engine, if the air-fuel mixture is lean, the output will decrease and the rotational speed will drop, and if the mixture is rich, the output will increase and the rotational speed will also increase. This is the 6th time I used it.
In the figure, the transition of the accelerator 2≠ is detected by the accelerator 1Fi1 and the detector 2O], and the output control circuit/Hiro1 oscillator/
3? By changing the amplitude of the ultrasonic oscillator/2 through I, the intensification of the fuel changes, so the ratio of the air-fuel mixture changes. As a result, the rotation speed of the P'3 combustion engine also changes accordingly. This can be used to control the foot rotation in the generator of the machine 1-, etc. by manually controlling the load fluctuation in place of the accelerator opening, resulting in the omission of the throttle valve. In other words, the carburetor shown in Figure 7 is removed from the throttle valve 'of the one shown in Figure 7, and the rotation speed is controlled only by the fuel mixture ratio? They are different in that they do.

The embodiment shown in Figure 7' has an additional NOx countermeasure device, and the five halves shown are exactly the same as the carburetor shown in Figure 1, with the air-fuel mixture passage changing from the horizontal direction to the vertical direction. Just by being there,
The right half has the same structure as the left half, but the difference is that the left half houses fuel, while the right half houses cooling water. Therefore, the parts of each part are given the symbol ′
They were distinguished by adding . The amplitude of the ultrasonic vibrator 72' of the vaporizer is controlled by the engine operating conditions, and the ultrasonic vibrator 72' of the water atomizer is controlled by the engine temperature detection mechanism (O
Output control circuit for the output of the A-line thermistor/4",
It is controlled via an oscillator 73'. As mentioned above, NO
In order to suppress the generation of NOx, it is preferable to lower the temperature of the engine, and this device can provide tri-supply of atomized water droplets, which are necessary to maintain the appropriate temperature, so that an effective device for NOx countermeasures can be obtained. The viscosity water supply portion is not limited to the position shown in the figure.

As mentioned above, the carburetor using the ultrasonic vibrator of the present invention is a practical invention that can supply an appropriate air-fuel mixture according to the prevailing conditions.

[Brief explanation of drawings]

Diagram M1 is a detailed explanatory diagram of this invention, and Figure 2 is the auxiliary combustion chamber?
FIG. 3 is a detailed explanatory diagram of the present invention used in combination with a conventional spray type, FIG. 3 is a detailed explanatory diagram of the present invention with the choke valve omitted, Figure 2 is a detailed explanatory diagram of this invention linked to the accelerator, Figure 7 is a detailed explanatory diagram of this invention with the throttle valve omitted, and Figure 7 is a detailed explanatory diagram of this invention with a water spray system for NOx countermeasures. An explanatory diagram appears. In the figure, /... Carburetor main body, λ... Part of penturi, 3... Intake air inlet, l... Air mixture outlet, ! ...
Slot valve, 2...atomization chamber, 7...fuel supply port, ? ...Float needle valve, Ri...Liquid level, /θ...Atomization chamber air intake, /L...Dense atomized fuel outlet, IT.
...Coarse particle blocking plate. Figure 5 Figure 6 Figure 7

Claims (1)

[Claims] 1. An ultrahigh wave oscillator that is vibrated by an oscillator connected to an output control circuit that is activated according to various operating conditions is installed below the fuel liquid level in the atomization chamber, and the atomization chamber as described in 1riJ is A vaporizer characterized by connecting a part of the venturi in front of the main body of the vaporizer and a part of the venturi in the main body of the vaporizer through the atomization chamber air intake and the medium-thickness atomized fuel outlet. , 2. In addition to the atomized MO rich atomized fuel outlet, the rich atomized fuel outlet that is directly connected to the auxiliary combustion chamber is fully functional.
A vaporizer according to claim 1, characterized in that: 3. The carburetor according to claim 1, characterized in that a fuel spray pipe is entirely provided that extends from below the liquid level of the atomization chamber to a part of the internal venturi. The claim is characterized in that the air intake to the atomization chamber is located at the front of the atomization chamber, and the air to the atomization chamber is made independent of the air passing through a part of the venturi. The vaporizer according to item 1. ! , an accelerator operation detection mechanism that connects the accelerator and the throttle valve operating rod via a spring and a Dantsuk mechanism, and that connects to the output control circuit; teeth. (b) The carburetor according to claim 1, wherein the throttle valve is omitted and the output follow-up control of the internal combustion engine is performed by increasing and decreasing the fuel supply tray. 7. A water atomization chamber is provided separately from the fuel atomization device, and an ultra-high wave oscillator connected to an output control circuit operated by a temperature sensing device in the engine and operated by an oscillator is placed in the chamber under the water surface. 2. The vaporizer according to claim 1, wherein the water splatter is provided, and the water vaporizer is completely connected to the air-fuel mixture passage by the water atomization chamber air intake and the atomization water droplet outlet.