JPH0579403A - Automatic starting device of multiple carburetor - Google Patents

Abstract

PURPOSE:To provide the automatic starting device of a multiple carburetor in which is used a single starting device, capable of improving idling operation property of an engine, and also making proper starting mixture air control when the automatic starting device can be not operated. CONSTITUTION:A number of third starting mixture air passages 25 same as the number of carburetors 6 whose respective one ends are opened to intake passages 2, are opened to a second control cylinder 23 which is opened to second starting mixture air passages 24 and second starting fuel passages 26. The second starting mixture air passages 24 are opened to the first control cylinder 9 of an automatic valve device D controlled by a first opening/closing valve body 14 driven by a thermosensible responsing body 17 which displaces according to change of a temperature, and being led from a first starting mixture air passage 11 communicated with the same number of intake passages 2 as the same number of the carburetors 6 for composing a multiple carburetor C, and on the other hand, the number of second starting fuel passages 26 is equal to the number of the carburetors 6 led one a starting fuel passage 12 communicated with the bottom part of the constant liquid surface of a float chamber 3. By a second opening/closing valve body 27 which is rotatable by manual means, the second and third starting mixture air passages 24, 25 are communicated with each other, the second starting mixture air passage 24 is communicated with the second starting fuel passage 26, or the passages 25 and 26 are communicated with each other.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a vaporizer for controlling the concentration and amount of an air-fuel mixture supplied to an engine, of which a rich air-fuel mixture constitutes a multiple vaporizer particularly when the engine is cold started. The present invention relates to an automatic starting device for a multiple vaporizer that automatically supplies the intake passage of each vaporizer.

[0002]

2. Description of the Related Art In a single vaporizer, the ambient temperature of an engine is automatically detected by a wax in which a thermal expansion material such as paraffin or ether is hermetically sealed in a case,
The starting mixture that is optimal for the temperature is automatically controlled by the stroke of the control rod that moves by the expansion and contraction of the wax, and is supplied from the throttle valve of the carburetor into the intake passage on the engine side. A technique for controlling an appropriate starting air-fuel mixture by manual operation irrespective of the stroke of the control rod due to a change in the volume of the wax when the wax or the like is in an inoperative state is a patent application by the present applicant.
There is No. -266846.

[0003]

According to such a conventional technique, the starting mixture is supplied to the intake passage of the single carburetor by the single starting device. On the other hand, in order to cope with the tendency toward higher output of the engine, a so-called multiple vaporizer using a plurality of vaporizers is often adopted. When supplying a starting mixture to a plurality of carburetors by a single starting device in such a multiple vaporizer, generally, a single starting mixture is controlled to be opened / closed by a starting opening / closing valve of the starting device. The air passage is branched into a plurality according to the number of vaporizers, and the branched starting mixture passage is connected to the intake passage of each vaporizer.

According to such a starting device, the branched starting mixture passages connected to the respective carburetors are communicated with each other at a branch point of a single starting mixture passage.

That is, in the state where the starter opening / closing valve of the starter closes the starter mixture passage, the starter mixture is not supplied to each starter mixture passage branched from the starter mixture passage. The branched starting mixture passages that branch from the starting mixture passage and are connected to the intake passages of the carburetors are always in communication with each other.

(1) According to this, although the opening area of the intake passage is finely controlled by the throttle valve, from the starting mixture passage branched from the intake passage of another adjacent carburetor from the throttle valve. Air flows into the intake passage on the engine side, and an increase in this air amount may increase the minimum idling speed of the engine, which is not preferable. For example, when a centrifugal clutch is used as the power output mechanism, the rotation of the engine is output to the drive part.

(2) As described above, it is considered that the opening of the throttle valve is further closed than the idling opening as a means for correcting the increase in the air amount, but this makes the opening extremely small. It becomes the opening, the flow velocity of the air flowing through this part is accelerated to promote the occurrence of icing, and in the case of a multiple vaporizer, the throttle valve opening of each vaporizer must be perfectly synchronized. The adjustment work is extremely difficult to perform in the fine opening range.

The present invention has been made in view of the above problems. In a multiple vaporizer using a single starting device, the idling drivability is improved and the stroke of the control rod is controlled by the change in the volume of the wax. It is an object of the present invention to provide an automatic starter for a multiple vaporizer that can supply an appropriate starting air-fuel mixture by manual operation when it becomes impossible.

[0009]

In order to achieve the above-mentioned object, the present invention provides a carburetor main body in which an intake passage penetrates the inside and the intake passage is controlled to open and close by a throttle valve, and an interior together with the carburetor main body. A float chamber main body that forms a float chamber that holds a constant liquid level, and a multiple vaporizer in which a plurality of vaporizers are arranged.
In the first control cylinder, a starting air passage that communicates with the atmosphere, a starting fuel passage that communicates below a constant liquid level in the float chamber, and a first starting mixture gas passage that is the same number as the carburetors that form the multiple vaporizer, In the first control cylinder, and the starting air passage, the starting fuel passage, and the first starting air-fuel mixture passage by the heat-sensitive responder that is displaced according to the temperature change. A first opening / closing valve body for controlling opening and closing of a valve, and an automatic valve device comprising:
Inside the control cylinder, a plurality of second starting mixture passages connected to the plurality of first starting mixture passages and the intake passages of the carburetors are connected to each other, and each second
A plurality of third starting air-fuel mixture passages corresponding to the second starting air-fuel mixture passages, and a plurality of third starting air-fuel mixture passages, and a plurality of third starting air-fuel mixture passages and a plurality of third starting air-fuel mixture passages, respectively. The second starting fuel passage, the valve device body having the opening, and the second control cylinder, which is manually displaced in the second control cylinder, is closed when the respective second starting fuel passages are closed. The passage and the respective third starting mixture passages are communicated with each other, and when the respective second starting mixture passages are closed, the respective second starting fuel passages and the respective third starting mixture passages are connected. And a second on-off valve body that communicates between the respective second starting mixture passages and the respective second starting fuel passages when the respective third starting mixture passages are closed. With a manual valve device;
It is characterized by having.

[0010]

In the normal state of the automatic valve device, the manual valve device closes the second starting fuel passage with the second opening / closing valve,
The respective second starting mixture passages and the respective third starting mixture passages communicate with each other. Therefore, the starting air-fuel mixture controlled by the automatic valve device is supplied to the intake passages of the respective carburetors through the respective third starting air-fuel mixture passages.

When the automatic valve device becomes abnormal due to a driver's mistake and it is necessary to supply the starting air-fuel mixture to the engine, the manual valve device is provided with a second opening / closing valve for each second valve.
The second starting fuel passage and the third starting mixture passage are communicated with each other. According to this, the starting fuel is supplied to the intake passage of each carburetor from the respective second starting fuel passages through the respective third starting mixture passages.

When the automatic valve device is in an abnormal state due to a driver's mistake and it is not necessary to supply the starting mixture to the engine, the manual valve device is provided with the second opening / closing valve and the respective third opening / closing valve.
And closing each of the starting fuel-air mixture passages and communicating the second starting fuel passages with the respective second starting-fuel mixture passages. According to this, the starting air-fuel mixture or the starting fuel is not supplied to the intake passage of each carburetor through the respective third starting air-fuel mixture passages.

[0013]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of an automatic starter for a multiple vaporizer according to the present invention will be described below with reference to the drawings. 1 is a vertical sectional view showing the entire apparatus, FIG. 2 is an enlarged horizontal sectional view taken along the line AA of FIG. 1, and FIG. 3 is a vertical sectional view taken along the line BB of FIG.
In the description, upper, lower, left, and right are referred to in the drawings and are not limited to these.

The automatic starter of the multiple vaporizer is the multiple vaporizer C
And an automatic valve device D and a manual valve device E.

The multiple vaporizer C is constituted by the following.
Reference numeral 1 denotes a carburetor main body through which an intake passage 2 penetrates, and the intake passage 2 is controlled to be opened and closed by a throttle valve (not shown). A float chamber body 3 is arranged below the vaporizer body 1, and a float chamber 4 is formed by the lower recess of the vaporizer body 1 and the float chamber body. In the float chamber 4, a constant liquid level control of the float 5 and the like. A constant liquid level is formed by the mechanism. By the above, the single vaporizer 6
Is configured. The fuel system of the vaporizer 6 is omitted. This embodiment shows a triple vaporizer in which three vaporizers 6 are arranged in the vertical direction, and at least the throttle valves of the vaporizers 6 are connected so as to move synchronously. Further, a starting fuel outlet 7 is opened below a certain liquid level of the upper vaporizer 6.

The automatic valve device D is constructed as follows.
Reference numeral 8 denotes a valve device main body, and a cylindrical first control cylinder 9 is bored from the upper side toward the lower inside, and a side wall of the first control cylinder 9 has a start air passage 10 and a first start mixing unit. The air passage 11 opens, and the starting fuel passage 12 opens at the bottom of the first control cylinder 9.

One end of the starting air passage 10 has the first end as described above.
The side wall of the control cylinder 9 is opened, and the other end is opened to the atmosphere.

The first starting mixture passage 10 is provided in the same number as each carburetor 6 constituting the multiple carburetor C. In the present example, the first starting mixture passage 10 is a triple carburetor. Three air-fuel mixture passages 11 are provided separately. One end of the first starting air-fuel mixture passage 11 is opened to the side wall of the first control cylinder 9, and the other end is connected to a plurality of second starting air-fuel mixture passages which will be described later. The adjacent first starting mixture channel 11 is not directly connected.

One end of the starting fuel passage 12 has an upper carburetor 6
Is connected to the starting fuel outlet 7, and the other end opens to the bottom of the first control cylinder 9. Reference numeral 13 is a needle jet arranged at the opening end of the starting fuel passage 12 to the first control cylinder 9.

Reference numeral 14 is a first opening / closing means for controlling the effective passage areas of the starting fuel passage 12, the starting air passage 10, and the first starting mixture passage 11 (variably controlling from fully closed to fully opened). The valve body, and more specifically, the first control cylinder 9
Has a cylindrical shape so that the starting air passage 10 and the first starting air-fuel mixture passage 1 are provided outside the cylinder.
1 for variably controlling the effective passage area of the starting fuel passage 12. On the other hand, the effective passage area of the starting fuel passage 12 is arranged on the bottom surface of the first on-off valve 14 by inserting the needle 15 into the needle jet 13 of the starting fuel passage 12. To control.

A cylindrical lower case 15 having an open upper portion is arranged in the upper opening connected to the first control cylinder 9 of the valve device main body 8, and the lower case 15 is also provided.
The lower case 15 is attached to the valve device main body 8 by pressing the collar portion of the above with the plate.

Reference numeral 16 is a cylindrical upper case that covers the upper opening and the outer peripheral side of the lower case 15, and the thermosensitive body 17 is located in the cylindrical space formed by the lower case 15 and the upper case 16. Are placed.

This thermosensitive body 17 is a known one, and the case is divided into a wax storage chamber A and a semi-fluid storage chamber by a diaphragm, and a thermal expansion and contraction material such as olefin and paraffin is stored in the wax storage chamber. On the other hand, the semi-fluid material storage chamber is filled with a semi-fluid material such as polypropylene containing silicon grease.

A control rod 18 is movably arranged in the lower part of the case. An upper part of the control rod 18 is housed in a semi-fluid storage chamber and a lower part of the control rod 18 projects from a lower end of the case. Therefore, the volume change of the thermal expansion / contraction material in the wax accommodating chamber is converted into the stroke change of the control rod 18 in the axial direction through the semi-fluid body.

Reference numeral 19 denotes a tubular retainer that is movably arranged inside the lower case 15.
The locking collar portion provided on the lower portion of 9 is locked to the reduced step portion provided on the first opening / closing valve body 14, and is arranged so as to face the end portion of the control rod 18 protruding from the case.

Reference numeral 20 denotes a first spring arranged on the outer periphery of the retainer 19, and the first spring 20
The retainer 19 is constantly urged toward the end of the control rod 18 by the spring force of the.

Reference numeral 21 denotes a second spring which is provided between the first opening / closing valve body 14 and the retainer 19 in a contracted manner. The second spring 21 allows the locking collar portion of the retainer 19 and the first opening / closing valve body. 14 and the reduced step portion are elastically locked.

The downward movement of the control rod 18 is transmitted as a downward force to the first opening / closing valve body 14 via the retainer 19 and the second spring 21, while the control rod 1
8, the upward movement of the retainer 19 by the first spring 20 is transmitted to the reduced step portion of the first opening / closing valve body 14 via the locking flange portion, and is moved to the first opening / closing valve body 14. Transmitted as a directional force.

Reference numeral 22 denotes a PTC heater having a positive temperature characteristic, which is arranged so as to be in contact with the case of the thermosensitive body 17, and the heating characteristic of this heater is preferably matched with the warm-up temperature characteristic of the engine. For example, it is connected to a power source (not shown) with a cord.

The manual valve device E is constituted by the following.
Reference numeral 23 denotes a cylindrical second control cylinder that is bored from the left side of the valve device main body 8 toward the inside of the right side.
The second starting air-fuel mixture passage 24 opens at one side wall in the horizontal direction in FIG. This second starting mixture channel 2
4 is the same number as the first starting mixture gas passage 11, and the adjacent second starting mixture passage 24 is not directly connected. Then, each second starting mixture passage 24
Communicate with the respective first starting mixture passages 11. This is best shown in FIG.

Further, one end of the third starting air-fuel mixture passage 25 opens at the other side wall of the second control cylinder 23 in the horizontal direction in FIG. The number of the third starting air-fuel mixture passages 25 is equal to that of the second starting air-fuel mixture passages 24, and the second control cylinder 23 is provided.
At, the opening of the second starting air-fuel mixture passage 24 faces the opening. Then, each of the third starting air-fuel mixture passages 25
The other end of each is opened from the throttle valve of each carburetor 6 into the intake passage 2 on the engine side. The adjacent third starting air-fuel mixture passage 25 is not directly connected.

Further, one end of the second starting fuel passage 26 is opened at the lower side wall of the second control cylinder 23 in the vertical direction in FIG. The second starting fuel passages 26 are provided in the same number as the second starting air-fuel mixture passages 24, and the second control cylinder 23 is provided.
In, the second starting mixture channel 24 and the third starting mixture channel 25 open on the same vertical cross section. And
The other end of the second starting fuel passage 26 is connected to the starting fuel passage 12
Connected to.

According to the present embodiment, in FIG. 3, the respective second starting mixture passages 24, the respective third starting mixture passages 25, and the respective second starting fuel passages 2 are shown.
6 and 6 will be opened in three pairs on the same vertical cross section in the second control cylinder 23.

Numeral 27 is rotatably arranged in the second control cylinder 23, and each pair of second starting air-fuel mixture passages 2 is provided.
4, third starting mixture passage 25, second starting fuel passage 2
It is a cylindrical second opening / closing valve body for controlling opening / closing of 6, and has the following structure. In the second opening / closing valve body 27, a crescent-shaped notch valve portion 27A for opening and closing the pair of second starting fuel mixture passage 24, third starting fuel mixture passage 25, and second starting fuel passage 26. Is formed, and there are three pairs of passages forming these pairs, and therefore three notch valve portions 27A are also provided.

The cutout valve portion 2 of the second opening / closing valve body 27
7A controls the passages 24, 25 and 26 as follows.

The first control state is shown in FIG. According to this, the notch valve portion 27A is provided in the second starting fuel passage 26.
Is closed, and the second starting air-fuel mixture passage 24 and the third starting air-fuel mixture passage 25 are communicated with each other.

The second control state is shown in FIG. According to this, the cutout valve portion 27A is provided in the second starting mixture passage 2
4 is closed, and the second starting fuel passage 26 communicates with the third starting mixture passage 25.

The third control state is shown in FIG. According to this, the notch valve portion 27A is provided in the third starting mixture passage 2
5 is closed, and the second starting air-fuel mixture passage 24 and the second starting fuel passage 26 are communicated with each other.

Next, the operation will be described. First, when the automatic valve device D such as the heat-responsive body 17 and the first opening / closing valve body 14 is in a normal state (when an excessive external force is not applied to the automatic valve device D), the second opening / closing valve body 27 of the manual valve device E is Is Figure 4
Held in the state of.

In such a state, a description will be given of the start-up in a state where the engine ambient temperature is high (for example, 25 ° C. or higher). In this state, the wax of the thermosensitive body 17 is sufficiently expanded and the control rod 18 is fully extended downward. Therefore, the retainer 19 descends downward, and the first opening / closing valve body 14 is pushed down by the spring force of the second spring 21 to below the first control cylinder 9. According to this, the needle jet 13 of the starting fuel passage 12, the starting air passage 10, and the first starting mixture gas passage 11 are connected to the first opening / closing valve body 14
Will be blocked. Further, the notch valve portion 27 of the second opening / closing valve body 27
A closes the second starting fuel passage 26. From the above, even when the engine is started, the passages are kept closed as described above, so that the starting mixture is not supplied to each carburetor 6 through the manual valve device E, and the high temperature is maintained. It can be started according to the condition.

In such a state, the third starting air-fuel mixture passage 25, the second starting air-fuel mixture passage 24, and the first starting air-fuel mixture passage 11 are separated from each other and are directly connected to each other. In addition, since the first starting air-fuel mixture passage 11 is closed and held by the first opening / closing valve body 14, no air or air-fuel mixture is supplied to the intake passage 2 of each carburetor 6, and therefore the intake air The amount of air flowing in the passage 2 is controlled only by the throttle valve.

Next, when the engine ambient temperature is low (for example,-
The starting time at 5 ° C. will be described. In this state, compared with the high temperature state, the heat-sensitive responding body 17
Since the expansion of the wax is suppressed, the protrusion size of the control rod 18 is reduced. According to this, the retainer 19 is moved upward by the spring force of the first spring 20 until it comes into contact with the control rod 18, and according to this, the first opening / closing valve body 1
4 moves upward in the first control cylinder 9, and the start fuel passage 12
Is opened by a gap between the needle jet 13 and the needle 15, and the starting air passage 10 and the first starting mixture gas passage 11 are also opened into the first control cylinder 9.

When the engine is started in this state, the intake negative pressure generated in the intake passage 2 of each carburetor 6 becomes equal to the third starting mixture passage 25-the second starting mixture. Air passage 24-acting in the first control cylinder 9 via the respective first starting mixture passage 11, sucking air from the starting air passage 10 and starting fuel passage 12
More fuel is sucked in to form a starting mixture, and this mixture forms the first starting mixture passage 11 and the second starting mixture passage 24.
Is sucked into the intake passages 2 of the respective carburetors 6 from the respective third starting mixture passages 25 to satisfy the starting and warm-up operations of the engine. Each second starting fuel passage 26 is closed and held by each cutout valve portion 27A.

If an excessive external force is applied to the lower case 15 and the upper case 16 due to the driver's carelessness, the sealing of the case containing the wax and the semi-fluid may be deteriorated. Then, the retainer 19 moves upward by the spring force of the first spring 20, and the first opening / closing valve body 14 opens the starting fuel control passage 12, the starting air passage 10, and the first starting mixture gas passage 11. .. According to this, even when the ambient temperature of the engine is high, the starting air-fuel mixture is continuously supplied to the engine, which is not preferable.

In the present invention, in such a state,
The manual valve device E is operated as shown in FIG. according to this,
The third start mixture passage 25 is closed by the notch valve portion 27A of the second opening / closing valve body 27, and the second start fuel passage 26 is closed.
And the second starting mixture passage 24 communicate with each other. Since the third start-up air-fuel mixture passage 25 is closed by the second opening / closing valve body 27 in this way, even if any passage on the upstream side is unnecessarily opened, the start-up air, fuel, Alternatively, the air-fuel mixture is not supplied into the intake passages 2 of the respective carburetors 6 and does not hinder the starting in the state where the engine atmosphere temperature is high.

Further, the first opening / closing valve body 14 has the starting air passage 1
0, the first starting air-fuel mixture passage 11 and the starting fuel passage 12 are closed, and the semi-fluid body leaking from the case is the first
When attached to the outer periphery of the on-off valve body 14, the first on-off valve body 14
May deteriorate and the first opening / closing valve body 14 may close the passages. According to this, in the state where the engine ambient temperature is low, the starting air-fuel mixture cannot be supplied, which is not preferable.

In the present invention, in such a state,
The manual valve device E is operated as shown in FIG. according to this,
The second starting fuel mixture passage 24 is closed by the notch valve portion 27A of the second opening / closing valve body 27, and the second starting fuel passage 26 is formed.
And the third starting mixture passage 25 communicate with each other. Thus,
When the engine starting operation is performed, the intake negative pressure generated in the intake passage 2 of each carburetor 6 acts on the second starting fuel passage 26 through the third starting mixture passage 25, and the second starting is performed. Starting fuel can be drawn from the fuel passage 26 and supplied to the intake passage 2 of each carburetor 6 through the respective third starting mixture passages 25 connected to each carburetor 6. It is possible to reliably start the engine. And
When the supply of the starting fuel is stopped after the engine start and the warm-up operation are completed, the second opening / closing valve body 27 is rotated again to bring the starting fuel into the state shown in FIG. You can stop.

[0048]

According to the present invention, the carburetor main body in which the intake passage penetrates the inside and the intake passage is controlled to be opened and closed by the throttle valve, and the float chamber which holds a constant liquid level inside together with the carburetor main body are provided. A float chamber main body to be formed, a multiple vaporizer in which a plurality of vaporizers including the same are arranged, a start air passage communicating with the atmosphere in the first control cylinder, and a start fuel passage communicating under a constant liquid level in the float chamber. , A valve device main body in which the same number of first starting air-fuel mixture passages as the carburetors forming the multiple carburetor are opened, and the starting air passage and the starting fuel passage by the heat-sensitive responder that is displaced in accordance with a temperature change. An automatic valve device comprising: a first opening / closing valve body for controlling opening / closing of each of the passages in a first control cylinder; and a plurality of first starter mixture passages in the second control cylinder. A plurality of second starting mixture passages connected to the respective first starting mixture passages; A plurality of third starting air-fuel mixture passages, which are respectively connected to the intake passages of the carburetors, and correspond to the respective second starting air-fuel mixture passages, and are connected to the starting fuel passages, and each of the second starting air-fuel mixture passages , And a plurality of second starting fuel passages corresponding to the respective third starting air-fuel mixture passages, and a valve device main body that is open, and is manually displaced in the second control cylinder. When the starting fuel passage is closed, the respective second starting mixture passages and the respective third starting mixture passages are communicated with each other, and when the respective second starting mixture passages are closed, the respective first starting mixture passages are closed. The second starting fuel passage and the respective third starting mixture passages communicate with each other, and when the respective third starting mixture passages are closed, the respective second starting mixture passages and the respective second starting mixture passages. Communicates with the starting fuel passage That a second on-off valve body, and become more manual valve device; by so constituted the automatic starting device of the multiple-vaporizer (1) a first starting mixture passage, second starting mixture passage,
The third starting air-fuel mixture passages are separately prepared by the same number according to the number of carburetors, and these passages communicate directly with the downstream of the first on-off valve body or the downstream of the second on-off valve body. According to this, air does not flow from the adjacent passage toward the intake passage. According to this, it is possible to suppress an increase in idling speed in a normal temperature state where the engine atmosphere temperature is high and it is not necessary to supply the air-fuel mixture from the automatic starter to the intake passage. The simplification of valve tuning work was achieved. (2) Even when the first on-off valve body of the automatic valve device is in the inoperative state due to the driver's carelessness, the second on-off valve body of the manual valve device provided separately from the first on-off valve body is operated. As a result, the mixture for starting and the fuel for starting can be controlled appropriately, and the starting performance of the engine can be made even better than before.

[Brief description of drawings]

FIG. 1 is a vertical sectional view showing an embodiment of an automatic starter for a multiple vaporizer according to the present invention.

FIG. 2 is a cross-sectional view taken along the line AA of FIG.

3 is a vertical cross-sectional view taken along the line BB of FIG.

FIG. 4 shows a first state in the vertical cross section of FIG.

5 shows a second state in the vertical cross section of FIG.

FIG. 6 shows a third state in the vertical cross section of FIG.

[Explanation of symbols]

 C multiple vaporizer 2 intake passage 4 float chamber 6 vaporizer D automatic valve device 8 valve device body 9 first control cylinder 10 starting air passage 11 first starting mixture passage 12 starting fuel passage 14 first opening / closing valve body 23 2nd control cylinder 24 2nd starting fuel-air mixture passage 25 3rd starting fuel-air mixture passage 26 2nd starting fuel passage 27 2nd on-off valve body E Manual valve device

Claims (1)

[Claims] 1. A carburetor main body 1 in which an intake passage 2 penetrates the inside and the intake passage is controlled to be opened and closed by a throttle valve, and a float chamber 4 which holds a constant liquid surface inside together with the carburetor main body 1. A floating chamber main body 3 and a multiple vaporizer C in which a plurality of vaporizers 6 are arranged; a start air passage 10 communicating with the atmosphere in the first control cylinder 9 and a fixed liquid level below the float chamber 4. A series of starting fuel passages 12 and a carburetor 6 forming a multiple carburetor C
The same number of the first starting air-fuel mixture passages 11, the valve device main body 8 that is opened, and the heat-sensitive responsive body 17 that is displaced according to the temperature change.
In the first control cylinder 9, the starting air passage 10, the starting fuel passage 12, the first starting air-fuel mixture passage 11 and the first opening / closing valve body 14 for controlling the opening and closing of the passages are formed. An automatic valve device D; a plurality of second starter mixture passages 24 connected to the plurality of first starter mixture passages 11 in the second control cylinder 23, and an intake passage 2 of each carburetor 6. A plurality of third starting air-fuel mixture passages 25, which are respectively connected to each other and correspond to the respective second starting air-fuel mixture passages 24, and a plurality of third starting air-fuel mixture passages 26, which are connected to the starting fuel passages, and the respective second starting air-fuel mixture passages 26, and A plurality of second starting fuel passages 24 corresponding to the third starting mixture passage 25, and a valve device body 8 having an opening, and a second control cylinder 23, which is manually displaced and is disposed in each of the second starting fuel passages 24. When the starting fuel passage 26 of the The two starting mixture passages 24 communicate with the respective third starting mixture passages 25, and when the respective second starting mixture passages 24 are closed, the respective second starting fuel passages 26 and the respective second starting fuel passages 26 are connected. Of the second starting fuel mixture passages 25 and the second starting fuel passages 26 when the third starting fuel mixture passages 25 are closed. Manual valve device E including a second on-off valve body 27 communicating with
And an automatic starting device for a multiple vaporizer equipped with;