Automatic choke valve double-cavity fuel oil supply system

Abstract

The utility model provides an automatic choke valve double-cavity fuel oil supply system which comprises a body, a floater chamber is arranged on the upper portion of the body, the floater chamber is connected with an oil inlet bent pipe, and the automatic choke valve double-cavity fuel oil supply system is characterized by further comprising an electromagnetic valve control mechanism and a choke valve control mechanism, wherein the electromagnetic valve is mounted on the floater chamber and is connected with an oil inlet and / or an oil outlet of the floater chamber; the electromagnetic valve needle head is located at the tail of the electromagnetic valve, and the electromagnetic valve controls the electromagnetic valve needle head to stretch out or retract in the oil inlet and / or the oil outlet. According to the system, automation and precision of fuel oil supply are achieved.

Description

TECHNICAL FIELD

[0001] The present application relates to a fuel supply system, in particular to an automatic choke double-chamber fuel supply system. BACKGROUND

[0002] A carburetor is a mechanical device that mixes a certain proportion of fuel and air under the action of vacuum generated by the engine. The carburetor is essential to the engine, and the upper part of the existing carburetor is usually provided with an air inlet and a float chamber. The float chamber is used to store gasoline from the gasoline pump, and a float in the container controls the fuel intake amount by the float height. The middle part is provided with a throat, a metering orifice and a jet pipe, etc. The lower part is provided with a throttle valve, etc. In the existing carburetor, only the flow of fuel through the metering orifice structure cannot realize automatic control of the fuel flow. CONTENT OF THE PRESENT APPLICATION

[0003] Therefore, the main purpose of the present application is to solve the problems of the prior art, and the present application provides an automatic choke double-chamber fuel supply system.

[0004] To achieve the above purpose, the present application provides an automatic choke double-chamber fuel supply system, comprising a body, wherein the upper part of the body is provided with a float chamber, and the float chamber is connected with an oil inlet elbow, and the system further comprises:

[0005] An electromagnetic valve control mechanism composed of an electromagnetic valve and an electromagnetic valve needle;

[0006] The electromagnetic valve is installed on the float chamber and connected with the oil inlet and / or oil outlet of the float chamber.

[0007] The electromagnetic valve needle is located at the tail of the electromagnetic valve, and the electromagnetic valve controls the extension or retraction of the electromagnetic valve needle in the oil inlet and / or oil outlet of the float chamber.

[0008] In an embodiment of the present application, the inner cavity of the body is provided with:

[0009] A main metering orifice is arranged on the body and connected with the oil inlet of the float chamber.

[0010] A foam pipe, wherein the first end of the foam pipe is connected with the outlet of the main metering orifice, and the second end of the foam pipe is in communication with the first air passage.

[0011] A fuel jet pipe, wherein one end of the fuel jet pipe is in close contact with the third end of the foam pipe, and the other end of the fuel jet pipe is in communication with the throat.

[0012] In an embodiment of the present application, the inner cavity of the body is further provided with:

[0013] An idle passage, which is in communication with the outlet of the main orifice;

[0014] An idle orifice, which is arranged at the other end of the idle passage, and the inlet of the idle orifice is also in communication with the second air passage;

[0015] A mixing passage, which is in communication with the outlet of the idle orifice, and the mixing passage is provided with a transition orifice, which is in communication with the throat orifice.

[0016] In an embodiment of the present application, the air baffle module further comprises an air baffle stepper motor, an air baffle shaft component, and an air baffle piece.

[0017] In an embodiment of the present application, the air baffle module is provided with a motor wire connector and an induction wire connector, the motor wire connector is connected to the air baffle stepper motor, and the induction wire connector is connected to the induction wire of the engine.

[0018] In an embodiment of the present application, the air baffle stepper motor is provided with a plug, the air baffle shaft component is provided with a plug-in connector, the plug cooperates with the plug-in connector to realize the connection between the air baffle stepper motor and the air baffle shaft component.

[0019] In an embodiment of the present application, the air baffle shaft component is arranged in the air baffle shaft hole of the body.

[0020] In an embodiment of the present application, a plurality of first mounting holes are arranged on the air baffle shaft component at intervals, and the air baffle piece is mounted on the air baffle shaft component through the first mounting holes.

[0021] In an embodiment of the present application, the air baffle module further comprises a throttle shaft component and a throttle piece, the throttle shaft component is mounted on the body and connected to the engine, and rotates around the axis of the body; the throttle piece is fixed on the throttle shaft component and opens and closes with the rotation of the throttle shaft component.

[0022] In an embodiment of the present application, the throttle shaft component is provided with a pull wire connector, and the pull wire connector is connected to the pull rod of the engine.

[0023] In an embodiment of the present application, a plurality of second mounting holes are arranged on the throttle shaft component at intervals, and the throttle piece is mounted on the throttle shaft component through the second mounting holes.

[0024] Compared with the related art, the present application has the following advantages:

[0025] The automatic choke valve double-cavity fuel supply system of the present application has the following advantages. First, the system adds an electromagnetic valve control mechanism. The electromagnetic valve is installed on the float chamber and connected with the oil inlet and / or oil outlet of the float chamber. The electromagnetic valve needle is controlled by the electromagnetic valve to extend or retract in the oil inlet and / or oil outlet of the float chamber, thereby controlling the flow of fuel into or out of the float chamber, and achieving the automation and precision of fuel supply. Second, the system adds a motor module. The choke valve stepper motor receives the engine speed signal through the motor module and controls the rotation of the choke valve shaft component, thereby adjusting the opening of the choke valve plate. This design realizes the automatic control of the opening of the choke valve, and significantly improves the response speed and control accuracy of the system compared with the manual or simple mechanical control of the opening of the choke valve in the prior art.

[0026] For further understanding of the technology, method and effect of the present application, and to achieve the intended purpose of the present application, please refer to the following detailed description and drawings. In addition, the purpose, characteristics and features of the present application can be understood more deeply and specifically. However, the drawings are provided for reference and description only, and are not intended to limit the scope of the present application. BRIEF DESCRIPTION OF DRAWINGS

[0027] Figure 1 is a perspective view of the automatic choke valve double-cavity fuel supply system provided by an embodiment of the present application;

[0028] Figure 2 is Figure 1 a rear view of the automatic choke valve double-cavity fuel supply system in

[0029] Figure 3 is Figure 1 a top view of the automatic choke valve double-cavity fuel supply system in

[0030] Figure 4 is Figure 1 a bottom view of the automatic choke valve double-cavity fuel supply system in

[0031] Figure 5 is Figure 2 an A-A sectional view of the automatic choke valve double-cavity fuel supply system shown in

[0032] Figure 6 is Figure 3 a B-B sectional view of the automatic choke valve double-cavity fuel supply system shown in

[0033] Figure 7 is Figure 3 a C-C sectional view of the automatic choke valve double-cavity fuel supply system shown in

[0034] Figure 8 isFigure 2 D-D cross sectional view of the automatic choke dual chamber fuel supply system shown;

[0035] Figure 9 is a perspective view of the electromagnetic valve;

[0036] Figure 10 is a perspective view of the choke stepper motor;

[0037] Figure 11 is a perspective view of the throttle shaft assembly;

[0038] Figure 12 is a perspective view of the choke shaft assembly. Wherein, the reference numerals are: 1: body;

[0039] 2: float chamber;

[0040] 3: fuel inlet elbow;

[0041] 4: electromagnetic valve control mechanism; 41: electromagnetic valve;

[0042] 42: electromagnetic valve needle;

[0043] 51: main metering orifice;

[0044] 52: foam tube;

[0045] 53: fuel jet;

[0046] 54: first air passage; 61: idle passage;

[0047] 62: idle metering orifice;

[0048] 63: mixing passage;

[0049] 64: second air passage;

[0050] 65: transition orifice;

[0051] 71: motor module;

[0052] 711: motor wire terminal;

[0053] 712: inductive wire terminal;

[0054] 72: choke stepper motor; 721: plug;

[0055] 73: choke shaft assembly; 731: pull plug terminal;

[0056] 732: first mounting hole;

[0057] 74: choke flap;

[0058] 81: throttle shaft assembly; 811: pull wire terminal;

[0059] 812: second mounting hole;

[0060] 82: throttle blade. DETAILED DESCRIPTION

[0061] The detailed description and technical content of the present application are described below in conjunction with the drawings. However, the drawings are provided for reference and illustration only, and are not intended to limit the present application.

[0062] Referring to Figures 1-12 , Figure 1 is a perspective view of an automatic choke double-chamber fuel supply system according to an embodiment of the present application; Figure 2 , Figure 3 , Figure 4 are corresponding rear view, top view and bottom view, respectively; Figures 5-8 are cross-sectional views at different angles; Figure 9 is a perspective view of a solenoid valve; Figure 10 is a perspective view of a choke stepper motor; Figure 11 is a perspective view of a throttle shaft component; Figure 12 is a perspective view of a choke shaft component. The arrows in each figure indicate the flow direction of fuel, air and mixture.

[0063] Referring first to Figure 1 , Figure 3 , Figure 9 , the present application provides an automatic choke double-chamber fuel supply system, which includes a body 1, wherein a float chamber 2 is provided on the upper part of the body 1, and the float chamber 2 is connected to an oil inlet elbow 3. A closed space is formed in the float chamber for storing and regulating fuel. The system further includes a solenoid valve control mechanism 4, which is composed of a solenoid valve 41 and a solenoid valve needle 42. The solenoid valve 41 is installed on the float chamber 2 and is connected to the oil inlet and / or oil outlet (not shown in the figure) of the float chamber 2. The solenoid valve needle 42 is located at the tail of the solenoid valve 41, and the solenoid valve 41 controls the extension or retraction of the solenoid valve needle 42 in the oil inlet and / or oil outlet of the float chamber 2 through electromagnetic action, thereby controlling the flow of fuel into or out of the float chamber 2, and achieving automation and precision of fuel supply. This is one of the significant differences from the prior art, which only relies on mechanical structure to control fuel flow.

[0064] In addition, in an embodiment, the electromagnetic valve control mechanism 4 can also be electrically connected with a master control unit. The electromagnetic valve control mechanism is connected with the output port of the master control unit (such as PLC, single-chip microcomputer or other control system). This connection can be a direct wire connection, or an indirect connection through terminals, sockets, etc. The master control unit controls the on-off state of the electromagnetic valve by sending an electrical signal to the electromagnetic valve. Through the electrical connection with the master control unit, the electromagnetic valve can be remotely controlled. The master control unit can control the opening and closing of the electromagnetic valve according to a preset program or an external input signal (such as a sensor signal), thereby realizing automatic control.

[0065] In addition, in an embodiment, referring to Figures 6-7 In addition, in an embodiment, referring to

[0066] In addition, in an embodiment, referring to Figure 7 , Figure 8As shown in the figure, the inner cavity of the body 1 is further provided with an idle passage 61, an idle metering hole 62, a mixing passage 63, etc. The idle passage 61 is in communication with the outlet of the main metering hole 51; the idle metering hole 62 is arranged at the other end of the idle passage 61, and the inlet of the idle metering hole 62 is also in communication with a second air passage 64; the mixing passage 63 is in communication with the outlet of the idle metering hole 62, and the mixing passage 63 is provided with a transition hole 65, which is in communication with the throat. In this embodiment, the fuel flows into the idle passage 61 through the main metering hole 51, and after passing through the idle metering hole 62, the fuel is mixed with the air input through the second air passage 62 to generate mixed gas, which is sprayed into the throat through the transition hole 65. In some embodiments, the idle metering hole 62 and the transition hole 65 are both arranged as structures with adjustable sizes, which can be adjusted according to different adapted engines. In this embodiment, the idle passage is provided with an idle metering hole, and the idle metering hole is not directly connected to the main metering hole. The design purpose is to accurately control the flow of fuel when the engine is in the idle working condition, so as to ensure that the engine can operate stably. The size of the idle metering hole is carefully calculated to ensure that the fuel can enter the system stably at idle, and to provide the engine with appropriate fuel supply. In addition, the mixing passage 63 is provided with a transition hole 65, and the shape and size of the transition hole are carefully designed to ensure that the mixed gas can smoothly pass through and smoothly enter the combustion chamber of the engine. This design not only improves the stability of the system, but also ensures that the engine can obtain stable and efficient fuel supply.

[0067] In addition, in an embodiment, with reference to Figure 1 、 Figure 2 、 Figure 4 、 Figure 10 、 Figure 12The automatic choke double-cavity fuel supply system further comprises a motor module 71, a choke stepper motor 72 installed on the motor module 71, a choke shaft component 73 connected with the choke stepper motor 72, and a choke blade 74 connected with the choke shaft component 73. The motor module 71 is provided with a motor wire connector 711 and an induction wire connector 712. The motor wire connector 711 is connected with the choke stepper motor 72, and the induction wire connector 712 is connected with the induction wire of the engine. In this embodiment, the choke stepper motor 72 receives the engine speed signal through the motor module 71, and controls the rotation of the choke shaft component 73 according to the engine speed signal, so as to adjust the opening degree of the choke blade 74. This design realizes the automatic control of the opening degree of the choke, and significantly improves the response speed and control accuracy of the system compared with the manual or simple mechanical control of the opening degree of the choke in the prior art. Specifically, the motor wire connector 711 is used to connect the choke stepper motor 72 to provide power driving, and the induction wire connector 712 is used to connect the induction wire of the engine to obtain the engine speed signal. The motor module 71 is internally provided with control logic, which can automatically adjust the rotation angle of the choke stepper motor 72 according to the engine speed signal, so as to accurately control the opening degree of the choke blade 74. This design realizes the intelligent matching of the engine speed and the opening degree of the choke, and improves the overall performance of the fuel supply system and the combustion efficiency of the engine.

[0068] In addition, in an embodiment, the motor module is further connected with a master control unit, realizing the automatic adjustment of the opening degree of the choke. As the control center of the system, the master control unit is responsible for receiving and processing the engine speed signal. According to the preset algorithm or program, it calculates the required opening degree of the choke, and sends the corresponding control signal to the motor module. Through the motor module, the rotation of the choke stepper motor is controlled, and then the rotation of the choke shaft component is adjusted, finally achieving the purpose of controlling the opening degree of the choke blade.

[0069] In addition, as shown in Figure 10 , Figure 12 In an embodiment, the choke stepper motor 72 is provided with a plug 721, and the choke shaft component 73 is provided with a plug-in connector 731. The plug 721 cooperates with the plug-in connector 731 to realize the connection between the choke stepper motor 72 and the choke shaft component 73. In an embodiment, the choke shaft component 73 is arranged in the choke shaft hole (not shown in the figure) of the body 1.

[0070] In an embodiment, as shown in Figure 12 , a plurality of first mounting holes 732 are arranged on the choke shaft component 73 at intervals, which are used to mount the choke blade 74.

[0071] In an embodiment, as shown in Figure 1 , the choke blade 74 is provided with a plurality of second mounting holes 741, which are used to mount the choke blade 74 on the choke shaft component 73.Figure 11 As shown, the automatic choke double-cavity fuel supply system is further provided with a throttle shaft component 81 and a throttle blade 82. The throttle shaft component 81 is installed on the body 1 and connected with the engine, and rotates around the body axis. The throttle blade 82 is fixed on the throttle shaft component 81 and opens and closes with the rotation of the throttle shaft component. Thus, the passage width of the fuel flow from the float chamber cover to the subsequent components is controlled, and the fuel flow is regulated. This design realizes the precise control of the fuel flow through mechanical transmission, and provides more adjustment flexibility and stability compared with the prior art which only relies on the electromagnetic valve to control the fuel flow.

[0072] Further referring to Figure 11 As shown, in an embodiment, the throttle shaft component 81 is provided with a pull wire joint 811 connected with the pull rod (not shown) of the engine. In an embodiment, the throttle shaft component 81 is provided with a plurality of second mounting holes 812 arranged at intervals, for mounting the throttle blade 82.

[0073] In summary, the automatic choke double-cavity fuel supply system disclosed in the present application has the following features. First, the system adds an electromagnetic valve control mechanism 4, and installs the electromagnetic valve 41 on the float chamber and connects it with the oil inlet and / or oil outlet of the float chamber 2. The electromagnetic valve needle 42 is controlled by the electromagnetic valve 41 through electromagnetic action to control the extension or retraction of the electromagnetic valve needle 42 in the oil inlet and / or oil outlet of the float chamber 2, thereby controlling the fuel flow into or out of the float chamber 2, and realizing the automation and precision of fuel supply. Second, the system adds a motor module 71, and the choke stepper motor 72 receives the engine speed signal through the motor module 71 and controls the rotation of the choke shaft component 73 accordingly, thereby adjusting the opening of the choke blade 74. This design realizes the automatic control of the choke opening, and significantly improves the response speed and control accuracy of the system compared with the prior art which manually or simply mechanically controls the choke opening.

[0074] The above is only a detailed description of the preferred embodiments of the present application and the drawings, but the features of the present application are not limited thereto, and are not intended to limit the present application. The scope of the present application should be subject to the scope of the patent application, and any embodiment similar to the scope of the patent application of the present application should be included in the scope of the present application. Any person skilled in the art can easily think of changes or improvements in the field of the present application, which can be covered by the patent scope of the present application.

Claims

1. An automatic choke dual chamber fuel supply system comprising a body, a float chamber being provided on an upper portion of the body, the float chamber being connected with an oil inlet bend, characterized in that, Also comprising: a solenoid control mechanism, which is composed of a solenoid and a solenoid needle; wherein the solenoid is installed on the float chamber and connected with the oil inlet and / or oil outlet of the float chamber; the solenoid needle is located at the tail of the solenoid, and the solenoid controls the extension or retraction of the solenoid needle in the oil inlet and / or oil outlet.

2. The system of claim 1, wherein, The inner cavity of the body is provided with: a main flow hole, which is provided on the body and connected with the oil inlet of the float chamber; a foam pipe, the first end of which is connected with the outlet of the main flow hole, and the second end of which is communicated with the first air channel; a fuel injection pipe, one end of which is closely connected with the third end of the foam pipe, and the other end of which is communicated with the throat.

3. The system of claim 2, wherein, The inner cavity of the body is further provided with: an idle speed channel, which is communicated with the outlet of the main flow hole; an idle speed flow hole, which is provided at the other end of the idle speed channel, and the inlet of which is further communicated with the second air channel; a mixing channel, which is communicated with the outlet of the idle speed flow hole, and is provided with a transition hole, which is communicated with the throat.

4. The system of claim 1, wherein, Further comprising a motor module, a choke stepper motor installed on the motor module, a choke shaft component connected with the choke stepper motor, and a choke vane connected with the choke shaft component.

5. The system of claim 4, wherein, The motor module is provided with a motor wire connector and an induction wire connector, the motor wire connector is connected with the choke stepper motor, and the induction wire connector is connected with the induction wire of the engine.

6. The system of claim 4, wherein, The choke stepper motor is provided with a plug, the choke shaft component is provided with a plug-in connector, the plug cooperates with the plug-in connector to realize the connection between the choke stepper motor and the choke shaft component.

7. The system of claim 4, wherein, The choke shaft component is arranged in the choke shaft hole of the body.

8. The system of claim 4, wherein, A plurality of first mounting holes are arranged on the choke shaft component at intervals for mounting the choke vane.

9. The system of claim 1, wherein, Further comprising a throttle shaft component and a throttle vane, the throttle shaft component is installed on the body and connected with the engine and rotates around the axis of the body, and the throttle vane is fixed on the throttle shaft component and opens and closes with the rotation of the throttle shaft component.

10. The system of claim 9, wherein, The throttle shaft component is provided with a stay wire connector, which is connected to the stay rod of the engine.

11. The system of claim 9, wherein, A plurality of second mounting holes are arranged on the throttle shaft component at intervals for mounting the throttle vane.

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