Automatic fuel gas supplementing carburetor

Abstract

The utility model discloses an automatic fuel gas supplement carburetor which comprises a main gas inlet channel and a gas supplement channel which are arranged in the carburetor, the main gas inlet channel is located on the rear side of a throttle valve of the carburetor and communicated with an engine for gas inlet, the gas supplement channel is communicated with the main gas inlet channel, and the gas supplement channel is opened after the rotating speed exceeds the set rotating speed of the engine. The gulp valve mechanism comprises a valve core and a valve core driving mechanism which drives the valve core to move and is used for opening or closing the gulp channel; according to the carburetor fuel gas supplementing device, the gas supplementing channel for fuel gas inlet is arranged, gas supplementing is conducted through the linkage switch, fuel gas supplementing of the carburetor can be effectively achieved, the phenomena of shaking and unstable running of an engine at the medium-high speed are effectively reduced, and the running stability of the engine is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to carburetor structure technical field, especially a kind of automatic gas filling carburetor. BACKGROUND

[0002] Traditional carburetor is mechanical device that mixes certain proportion of gasoline and air under the vacuum generated by engine operation.Dual-fuel carburetor is a new type of carburetor developed on the basis of traditional carburetor, that is, related structure for supplying gas is added in the structure of traditional carburetor, gas and air are mixed to meet the use demand when engine uses natural gas, liquefied petroleum gas and other gas as fuel.In the existing gas inlet structure of carburetor, when engine is at medium-high speed idle, insufficient gas mixing or insufficient gas suction may occur, which causes engine to shake and run unstably, affecting the stability of engine operation.

[0003] Therefore, it is urgent to develop an automatic gas filling carburetor, which can effectively supplement gas in carburetor by setting gas inlet supplement channel and supplementing gas through linkage switch, effectively reduce the shaking and unstable running of engine at medium-high speed, and improve the stability of engine operation. SUMMARY

[0004] Therefore, the utility model provides an automatic gas filling carburetor, which can effectively supplement gas in carburetor by adding gas inlet supplement channel and supplementing gas through linkage switch.

[0005] The utility model discloses an automatic gas filling carburetor, which comprises main inlet channel and supplement channel arranged in carburetor, main inlet channel is connected to engine inlet on the rear side of carburetor throttle valve, supplement channel is connected to main inlet channel, and supplement channel is opened after exceeding engine set speed.

[0006] Further, it further comprises supplement valve mechanism, which comprises valve core and valve core driving mechanism for driving valve core to move to open or close supplement channel.

[0007] Further, the valve core driving mechanism comprises locking spring and magnetic block, locking spring applies pre-tightening force to valve core to keep supplement channel closed, and magnetic block is used to overcome pre-tightening force by magnetic force to drive valve core to move to open supplement channel.

[0008] Further, the magnetic force block comprises an active magnetic force block and a passive magnetic force block, the passive magnetic force block is fixed on the valve core, and the active magnetic force block can be driven to move away from or approach the passive magnetic force block, so as to release or attract the passive magnetic force block, so that the valve core is closed to the air supplement channel through the pre-tightening force or is driven to move to open the air supplement channel through the magnetic force overcoming the pre-tightening force.

[0009] Further, the active magnetic force block and the passive magnetic force block are arranged on the same axis and are separated by a partition plate arranged between the active magnetic force block and the passive magnetic force block.

[0010] Further, the valve core driving mechanism further comprises a tympanic membrane, the active magnetic force block can be driven to be connected to the tympanic membrane, and the tympanic membrane is driven by negative pressure of an engine air inlet and drives the active magnetic force block to approach the passive magnetic force block.

[0011] Further, a negative pressure channel is further arranged, the negative pressure channel is communicated between the tympanic membrane driving cavity and the engine air inlet, and the negative pressure channel is provided with an on-off valve.

[0012] Further, the on-off valve is a rotating shaft which is perpendicular to the negative pressure channel and is provided with a through hole for communicating the negative pressure channel, and the negative pressure channel is communicated or closed by rotating the rotating shaft.

[0013] Further, the end of the rotating shaft extends out of the carburetor shell and is linked with a throttle valve swing arm to rotate, and the rotating shaft is further provided with a torsional spring for resetting the rotating shaft.

[0014] The carburetor has the advantages that: the carburetor is provided with a gas air supplement channel, and air supplement is realized through a linkage switch, so that the carburetor gas can be effectively supplemented, the phenomenon of shaking and unstable operation of the engine at high speed is effectively reduced, and the stability of engine operation is improved. BRIEF DESCRIPTION OF DRAWINGS

[0015] The utility model will be further described in connection with the drawings and examples:

[0016] Figure 1 It is the structure schematic drawing of the utility model;

[0017] Figure 2 It is the cross section schematic drawing of the utility model;

[0018] Figure 3 It is the overhead schematic drawing of the utility model;

[0019] Figure 4 It is the structure schematic drawing of the utility model F-F cross section. PREFERRED EMBODIMENT

[0020] Figure 1 It is the structure schematic drawing of the utility model,Figure 2 is a cross-sectional schematic view of the present application, Figure 3 is a top view schematic view of the present application, Figure 4 is a structure schematic view of F-F section of the present application, as shown in the figure: a kind of gas automatic gas carburetor of the embodiment, including the main air passage 2 and the gas passage 4 being arranged in carburetor, the main air passage 2 is located in the rear side of carburetor throttle 13 and is communicated with engine intake, the gas passage 4 is communicated with main air passage 2, and the gas passage 4 is opened after exceeding engine set speed;As shown in the figure, gas inlet pipe 1 is arranged at the top of carburetor, is communicated with the rear side of carburetor throttle 13 engine intake by main air passage 2, gas passage 4 is communicated with main air passage 2, when engine speed reaches predetermined medium-high speed, gas passage 4 is communicated and opened, supplementary air is carried out, increases gas intake, improves engine stability.

[0021] In the embodiment, it further includes gas valve mechanism, including valve core 5 and the valve core driving mechanism for opening or closing gas passage 4 by driving valve core 5 to move;As shown in the figure, valve core 5 is arranged in gas passage 4, valve core 5 is conical frustum style, it is convenient to seal and close the air outlet of gas passage 4 and main air passage 2 communication, valve core driving mechanism can drive valve core 5 to move and open gas passage 4.

[0022] In the embodiment, the valve core driving mechanism includes locking spring 18 and magnetic block, the locking spring 18 applies the pre-tightening force of keeping gas passage 4 closed to valve core 5, and the magnetic block is used to overcome the pre-tightening force by magnetic force and drive valve core 5 to move and open the gas passage 4;As shown in the figure, locking spring 18 has the pre-tightening force of closing gas passage 4 by valve core 5, while locking spring 18 can be compressed by magnetic force by magnetic block to overcome the pre-tightening force and open gas passage 4.

[0023] In the embodiment, the magnetic block includes active magnetic block 7 and passive magnetic block 10, the passive magnetic block 10 is fixed on valve core 5, and the active magnetic block 7 can be driven to move away from or approach passive magnetic block 10, so as to realize the release or attraction of passive magnetic block 10, so that valve core 5 closes gas passage 4 by pre-tightening force or drives valve core 5 to move and open the gas passage 4 by magnetic force to overcome the pre-tightening force;As shown in the figure, passive magnetic block 10 is fixed on valve core 5, can be driven away from or approach by active magnetic block 7, while making valve core 5 close gas passage 4 by pre-tightening force or drive valve core 5 to move and open the gas passage 4 by magnetic force to overcome the pre-tightening force.

[0024] In the embodiment, the active magnetic block 7 and the passive magnetic block 10 are arranged on the same axis and are separated by the partition plate 6 arranged between the active magnetic block 7 and the passive magnetic block 10; as shown in the figure, the active magnetic block 7 and the passive magnetic block 10 are arranged on the same axis and are separated by the partition plate 6, and the partition plate 6 does not have the property of being attracted to the magnetic block.

[0025] In the embodiment, the valve core driving mechanism further comprises a tympanic membrane 8, the active magnetic block 7 is driven to be connected to the tympanic membrane 8, the tympanic membrane 8 is driven by the negative pressure of the engine intake passage and drives the active magnetic block 7 to approach the passive magnetic block 10; as shown in the figure, the outer side of the tympanic membrane 8 is provided with a sealing cover 16 and is bolted on the carburetor shell, a sealed driving cavity is formed between the carburetor shell and the tympanic membrane 8, a return spring 9 is further arranged between the carburetor and the tympanic membrane 8, the return spring 9 can be compressed by the tympanic membrane 8 driven by the negative pressure, the two ends of the return spring 9 are fixed on the tympanic membrane 8 and the carburetor shell respectively, for resetting to the initial state after the tympanic membrane 8 is contracted, the tympanic membrane 8 drives the active magnetic block 7 to approach the passive magnetic block 10 under the drive of the negative pressure, the valve core 5 in the air supplement channel 4 drives the valve core 5 to move to open the air supplement channel 4 by overcoming the pre-tightening force through the magnetic force, and at the same time, the tympanic membrane 8 drives the active magnetic block 7 to move away from the passive magnetic block 10 under the drive of the return spring 9 after the negative pressure ends, and the air supplement channel 4 is closed under the action of the pre-tightening force of the latching spring 18.

[0026] In the embodiment, a negative pressure channel 17 is further included, the negative pressure channel 17 is communicated between the tympanic membrane driving cavity and the engine intake passage, and the negative pressure channel 17 is provided with an on-off valve; as shown in the figure, the negative pressure channel 17 is communicated outside the throttle valve 13, for transmitting the negative pressure generated by the engine intake, and the negative pressure channel 17 is provided with an on-off valve for communication.

[0027] In the embodiment, the on-off valve is a rotating shaft 12 which is perpendicular to the negative pressure channel 17 and is provided with a through hole for communicating the negative pressure channel 17, and the communication or closure of the negative pressure channel 17 is realized by rotating the rotating shaft 12; as shown in the figure, the on-off valve is a rotating shaft 12 which is perpendicular to the negative pressure channel, and the rotating shaft 12 is provided with a through hole for communicating the negative pressure channel.

[0028] In the embodiment, the end of the rotating shaft 12 extends out of the carburetor shell and rotates with the throttle valve swing arm 11, and the rotating shaft 12 is further provided with a torsional spring 15 for resetting the rotating shaft 12; as shown in the figure, the end of the rotating shaft 12 extending out of the carburetor shell is provided with a rotating part 14, and rotates with the throttle valve shaft swing arm 11, the throttle valve swing arm 11 drives the rotating part 14 to rotate when rotating, and further drives the rotating shaft 12 of the on-off valve to rotate to control the opening and closing of the negative pressure channel 17, and the torsional spring 15 is sleeved on the rotating shaft 12, for resetting the rotating shaft 12 to the initial position of closing the negative pressure channel 17 after rotating.

[0029] In the embodiment, when the carburetor is working, the throttle valve 13 is controlled and rotates, when the throttle valve shaft 3 rotates, the throttle valve shaft swing arm 11 provided at the end of the throttle valve shaft 3 drives the rotating member 14 provided at the end of the opening and closing valve rotating shaft 12 to rotate synchronously, that is, the opening and closing valve makes the negative pressure passage 17 communicate through the through hole; at the same time, the engine works to generate intake negative pressure, the negative pressure is transmitted to the eardrum driving cavity on the inner side of the eardrum 8 through the negative pressure passage 17, the eardrum 8 is contracted under the action of the negative pressure, and drives the active magnetic block 7 to approach the passive magnetic block 10, the valve core 5 in the air supplement passage 4 drives the valve core 5 to move to open the air supplement passage 4 by overcoming the pre-tightening force through the magnetic force, and the gas supplement is completed; the opening and closing valve is reset under the action of the torsion spring 15 after rotating, the negative pressure passage 17 is closed, the eardrum 8 is reset under the action of the reset spring 9, drives the active magnetic block 7 to move away from the passive magnetic block 10, and the air supplement passage 4 is closed under the action of the pre-tightening force of the locking spring 18; in the embodiment, the active magnetic block 7 and the passive magnetic block 10 complete linkage control through the mutual attraction of the magnetic force, and linkage can also be completed by mutual repulsion of the magnetic force of the active magnetic block 7 and the passive magnetic block 10, which will not be described here.

[0030] Finally, it should be pointed out that the above embodiments are only used to illustrate the technical solutions of the utility model and are not limited, although the utility model has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical solutions of the utility model can be modified or replaced equivalently without departing from the purpose and scope of the technical solutions of the utility model, which should be covered in the scope of the claims of the utility model.

Claims

1. A gas automatic air compensating carburettor characterised in that: The carburetor comprises a main air inlet channel and a supplementary air inlet channel, the main air inlet channel is located at the rear side of the carburetor throttle valve and communicates with the engine air inlet, the supplementary air inlet channel communicates with the main air inlet channel, and the supplementary air inlet channel is opened after the engine speed exceeds the set speed; The carburetor further comprises a supplementary air valve mechanism, which comprises a valve core and a valve core driving mechanism for driving the valve core to move to open or close the supplementary air inlet channel; The valve core driving mechanism comprises a locking spring and a magnetic block, the locking spring applies a pre-tightening force to the valve core to keep the supplementary air inlet channel closed, and the magnetic block is used to drive the valve core to move to open the supplementary air inlet channel by overcoming the pre-tightening force through magnetic force.

2. The automatic gas compensating carburettor as claimed in claim 1 wherein: The magnetic block comprises a driving magnetic block and a passive magnetic block, the passive magnetic block is fixed on the valve core, and the driving magnetic block can be driven to move away from or approach the passive magnetic block, so as to release or attract the passive magnetic block, so that the valve core closes the supplementary air inlet channel through the pre-tightening force or moves to open the supplementary air inlet channel by overcoming the pre-tightening force through the magnetic force.

3. The gas automatic air compensating carburettor as claimed in claim 2 wherein: The driving magnetic block and the passive magnetic block are arranged on the same axis and are separated by a partition plate arranged between the driving magnetic block and the passive magnetic block.

4. The gas automatic air compensating carburettor as claimed in claim 3 wherein: The valve core driving mechanism further comprises a tympanic membrane, the driving magnetic block can be driven to be connected to the tympanic membrane, and the tympanic membrane is driven by the negative pressure of the engine air inlet channel and drives the driving magnetic block to approach the passive magnetic block.

5. The gas automatic air compensating carburettor as claimed in claim 4 wherein: The carburetor further comprises a negative pressure channel, the negative pressure channel communicates between the tympanic membrane driving cavity and the engine air inlet channel, and the negative pressure channel is provided with an opening and closing valve.

6. The gas automatic air compensating carburettor as claimed in claim 5 wherein: The opening and closing valve is a rotating shaft which is perpendicular to the negative pressure channel and is provided with a through hole for communicating the negative pressure channel, and the communication or closure of the negative pressure channel is realized by rotating the rotating shaft.

7. The gas automatic air compensating carburettor as claimed in claim 6 wherein: The end of the rotating shaft extends out of the carburetor shell and is linked with the throttle valve swing arm to rotate, and the rotating shaft is further provided with a torsional spring for resetting the rotating shaft.

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