CN107687378B - Fuel supply system of general gasoline engine - Google Patents
Fuel supply system of general gasoline engine Download PDFInfo
- Publication number
- CN107687378B CN107687378B CN201610628422.2A CN201610628422A CN107687378B CN 107687378 B CN107687378 B CN 107687378B CN 201610628422 A CN201610628422 A CN 201610628422A CN 107687378 B CN107687378 B CN 107687378B
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- China
- Prior art keywords
- choke valve
- arm
- choke
- support arm
- supply system
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
- F02M1/00—Carburettors with means for facilitating engine's starting or its idling below operational temperatures
- F02M1/02—Carburettors with means for facilitating engine's starting or its idling below operational temperatures the means to facilitate starting or idling being chokes for enriching fuel-air mixture
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02D—CONTROLLING COMBUSTION ENGINES
- F02D9/00—Controlling engines by throttling air or fuel-and-air induction conduits or exhaust conduits
- F02D9/08—Throttle valves specially adapted therefor; Arrangements of such valves in conduits
- F02D9/10—Throttle valves specially adapted therefor; Arrangements of such valves in conduits having pivotally-mounted flaps
- F02D9/1065—Mechanical control linkage between an actuator and the flap, e.g. including levers, gears, springs, clutches, limit stops of the like
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Means For Warming Up And Starting Carburetors (AREA)
Abstract
The invention discloses a fuel supply system of a general gasoline engine, which comprises a body, a choke valve rotating mechanism, a throttle valve rotating mechanism and a guy cable control mechanism, wherein the choke valve rotating mechanism, the throttle valve rotating mechanism and the guy cable control mechanism are connected to the body, and the guy cable control mechanism comprises a rotary rocker arm and a guy cable. The rotary rocker arm comprises a rotating shaft, a first support arm and a second support arm, wherein the first support arm and the second support arm are connected to the rotating shaft; the inhaul cable is connected to the first support arm or the second support arm. The choke valve rotating mechanism is provided with a choke valve stop pin corresponding to the first support arm, the throttle valve rotating mechanism is provided with a throttle valve stop pin corresponding to the second support arm, and the pull rope drives the rotating shaft to rotate so that the first support arm/the second support arm is pushed against or separated from the choke valve stop pin/the throttle valve stop pin. The invention integrates the operation of the throttle valve and the choke valve together, can realize remote control through the inhaul cable, realizes the functions of starting, running and idling, and meets the requirement of convenient use.
Description
Technical Field
The invention relates to a fuel supply system of an engine, in particular to a general gasoline engine fuel supply system for realizing linkage control of a throttle valve and a choke valve.
Background
With the improvement of the scientific and technical level, people have higher and higher requirements on convenient use of products. Generally, when an engine is started, a choke valve of a fuel supply system needs to be closed on the engine, the choke valve is opened after the engine is started, and if the engine runs at an idle speed, a speed regulating handle needs to be pulled on the engine, so that the process is extremely complicated and inconvenient.
As shown in fig. 1, in the conventional fuel supply system 1, when the engine is started, the choke valve 11 is closed, and after the engine is started, the fork 12 needs to be rotated to open the choke valve 11. When the engine is stopped and started next time, the choke valve 11 needs to be closed again, and the engine is opened again after being started. If the engine is required to be in idle operation, a throttle handle is pulled on the engine to operate the throttle rocker arm 13 to enable the throttle valve to be in an idle position. The above operation processes are independent, and the operation is too complicated, which is very inconvenient for users.
Disclosure of Invention
The invention aims to solve the problem that the conventional fuel supply system of the general gasoline engine is complex in operation process, and provides the fuel supply system of the general gasoline engine, which is convenient to operate.
In order to achieve the purpose, the fuel supply system of the general gasoline engine comprises a body, a choke valve rotating mechanism and a throttle valve rotating mechanism which are connected to the body, and a cable control mechanism, wherein the cable control mechanism comprises a rotary rocker arm and a cable. The rotary rocker arm comprises a rotating shaft, a first support arm and a second support arm, wherein the first support arm and the second support arm are connected to the rotating shaft; the pull cable is connected to the first support arm or the second support arm, wherein the choke valve rotating mechanism is provided with a choke valve stop pin corresponding to the first support arm, the throttle valve rotating mechanism is provided with a throttle valve stop pin corresponding to the second support arm, and the pull cable drives the rotating shaft to rotate so that the first support arm/the second support arm can push or leave the choke valve stop pin/the throttle valve stop pin.
In an embodiment of the above-mentioned fuel supply system for a general gasoline engine, the rotating shaft is connected to the body through a rotating torsion spring.
In an embodiment of the above-mentioned fuel supply system for a general gasoline engine, the cable control mechanism further includes a guiding fixing member connected to the body, and the cable is fixed and guided by the guiding fixing member.
In an embodiment of the above-mentioned general gasoline engine fuel supply system, the choke valve slewing mechanism includes choke valve, choke valve rocking arm and choke valve torsional spring, the choke valve is connected on the choke valve rocking arm, the choke valve rocking arm passes through the choke valve torsional spring is connected on the body, the choke valve stop pin is connected on the choke valve rocking arm.
In an embodiment of the above-mentioned fuel supply system for a general gasoline engine, the choke valve is normally open through the choke valve torsion spring, and the first arm pushes the choke valve stop pin to close the choke valve.
In an embodiment of the above-mentioned general gasoline engine fuel supply system, the choke valve is in a normally closed state through the choke valve torsion spring, the first support arm pushes the choke valve stop pin to make the choke valve keep closed, the cable control mechanism further includes a diaphragm pump, and the diaphragm pump is connected with the choke valve rocker arm through a pull rod.
In an embodiment of the above-mentioned fuel supply system for a general gasoline engine, the cable control mechanism further includes a control module connected to the cable, and the control module controls the cable to enable the first support arm and the second support arm to be located at a first position when the engine is started, a second position when the engine runs, and a third position when the engine is idling, respectively.
In an embodiment of the above-mentioned fuel supply system for a general gasoline engine, in the first position, the first arm abuts against the choke stop pin, and the second arm is away from the throttle stop pin.
In one embodiment of the fuel supply system of the general gasoline engine, in the second position, the first arm has no force on the choke pin, and the second arm has no force on the throttle pin.
In an embodiment of the above-mentioned fuel supply system for a general gasoline engine, in the third position, the first arm is away from the choke pin, and the second arm pushes against the throttle pin.
The remote control device has the beneficial effects that the remote control can be realized by adding the inhaul cable control mechanism, and the remote control device has the advantages of convenience in use, simple structure, stability, reliability and the like.
The invention is described in detail below with reference to the drawings and specific examples, but the invention is not limited thereto.
Drawings
FIG. 1 is a block diagram of a prior art fuel supply system for a general purpose gasoline engine;
FIG. 2 is a structural view of a first embodiment of a fuel supply system for a general gasoline engine according to the present invention;
FIG. 3 is a structural diagram of the rotary rocker arm of the first embodiment of the fuel supply system for a general gasoline engine of the present invention rotated at a first position;
FIG. 4a is a structural diagram (one) of the rotary rocker arm of the first embodiment of the fuel supply system of the general gasoline engine of the present invention rotated in a second position;
FIG. 4b is a structural diagram (two) showing the rotary rocker arm of the first embodiment of the fuel supply system for a general gasoline engine of the present invention being rotated in a second position;
FIG. 5 is a structural view of the rotary rocker arm of the first embodiment of the fuel supply system for a general gasoline engine of the present invention rotated at a third position;
FIG. 6a is a block diagram (one) of a second embodiment of the fuel supply system of the general gasoline engine of the present invention;
FIG. 6b is a block diagram (two) of a second embodiment of the fuel supply system of the general gasoline engine of the present invention;
FIG. 7 is a structural diagram of a rotary rocker arm of a second embodiment of the fuel supply system for a general gasoline engine of the present invention rotated in a first position;
FIG. 8a is a structural diagram (one) showing the rotary rocker arm of the second embodiment of the fuel supply system for a general gasoline engine of the present invention rotated in a second position;
FIG. 8b is a structural diagram (two) showing the rotary rocker arm of the second embodiment of the fuel supply system for a general gasoline engine of the present invention being rotated at a second position;
fig. 9 is a structural view of a rotary rocker arm of a second embodiment of the fuel supply system for a general gasoline engine of the present invention rotated at a third position.
Wherein the reference numerals
In the prior art:
1 existing Fuel supply System
11 choke valve
12 shifting fork
13 throttle valve rocker arm
In the invention:
10. fuel supply system of 10a general gasoline engine
100 main body
200. 200a choke valve rotating mechanism
210 choke stop pin
220 choke valve
230 choke valve rocker arm
240. 240a choke torsion spring
300 throttle rotating mechanism
310 throttle catch pin
320 throttle valve rocker arm
400 cable control mechanism
410 rotary rocker arm
411 rotating shaft
412 first arm
413 second arm
414 rotating torsion spring
420 pulling rope
430. 430a guiding and fixing piece
510a diaphragm pump
520a pull rod
530a connecting pipe
540a mixing chamber
Detailed Description
The following detailed description of the embodiments of the present invention with reference to the drawings and specific examples is provided for further understanding the objects, aspects and effects of the present invention, but not for limiting the scope of the appended claims.
The general gasoline engine fuel supply system is characterized in that a stay cable control mechanism is additionally arranged between the throttle valve and the choke valve, the stay cable control mechanism comprises a rotating rocker arm, a torsion spring and a stay cable are installed on the rotating rocker arm, a return torsion spring is additionally arranged at the choke valve, in addition, stop pins are respectively additionally arranged on the throttle valve and the choke valve, the rotating rocker arm is driven to rotate by remotely pulling the stay cable, and the rotating rocker arm shifts the stop pins to realize the integrated remote control of the throttle valve and the choke valve.
First embodiment
As shown in fig. 2, a general gasoline engine fuel supply system 10 according to a first embodiment of the present invention includes a body 100, a choke valve rotating mechanism 200, a throttle valve rotating mechanism 300, and a cable control mechanism 400. The choke rotating mechanism 200, the throttle rotating mechanism 300, and the cable control mechanism 400 are connected to the main body 100, respectively.
The cable control mechanism 400 includes a rotating rocker arm 410 and a cable 420. The rotary rocker arm 410 includes a rotating shaft 411, and a first arm 412 and a second arm 413 connected to the rotating shaft 411, wherein the rotating shaft 411 is rotatably connected to the body 411 through a rotary torsion spring 414. A rotary torsion spring 414 acts on the rotary rocker arm 410, and the rotary rocker arm 410 can rotate about the rotary shaft 411.
The cable 420 is coupled to the swing arm 410 via a cable joint, for example, the cable 420 may be connected to the first arm 412 or the second arm 413, and the cable 420 is connected to the second arm 413 in this embodiment. The cable 420 is pulled, and the rotating rocker arm 410 is rotated around the rotating shaft 411 by the pulling of the cable 420.
The choke rotating mechanism 200 has a choke pin 210 corresponding to a first arm 412, the throttle rotating mechanism 300 has a throttle pin 310 corresponding to a second arm 413, and the pull cable 420 rotates the rotary rocker arm 410 to push the first arm 412/the second arm 413 against or away from the choke pin 210/the throttle pin 310. The first arm 412 pushes against or moves away from the choke pin 210, and the choke rotating mechanism 200 rotates to open and close the choke valve. The second arm 413 pushes against or moves away from the throttle stop pin 310, and the throttle rotating mechanism 300 rotates to open or close the throttle. The first arm 412 and the second arm 413 cooperate to provide integrated control of the throttle and choke valves.
The cable control mechanism 400 further includes a guide fixing member 430, the guide fixing member 430 is fixed on the body 100, and the cable 420 is fixed and guided by the guide fixing member 430.
The choke rotating mechanism 200 further includes a choke valve 220, a choke rocker arm 230, and a choke torsion spring 240, the choke valve 220 being connected to the choke rocker arm 230, the choke rocker arm 230 being connected to the body 100 through the choke torsion spring 240, and a choke pin 210 being connected to the choke rocker arm 230. Wherein the choke valve 220 is normally open via the choke torsion spring 240.
The throttle pivot mechanism 300 includes a throttle rocker arm 320, and a throttle catch pin 310 is coupled to the throttle rocker arm 320.
The cable control mechanism 400 further comprises a control module, such as a remote control device, connected to the cable 420, and controlling the rotary rocker arm 410 and the first arm 412 and the second arm 413 thereof to rotate to a first position required when the engine is started, a second position required when the engine runs, and a third position required when the engine is idling, respectively, through the cable 420.
In the first position, the first arm 412 pushes against the choke stop pin 210, the choke 220 is closed, the second arm 413 is away from the throttle stop pin 310, and the throttle is wide open. In the second position, the first arm 412 has no force on the choke pin 210, the choke valve 422 is fully open, the second arm 413 has no force on the throttle stop pin 310, and the throttle is in the operating range. In the third position, the first arm 412 is away from the choke pin 210, the choke valve 422 remains fully open, and the second arm 413 pushes against the throttle stop pin 310, with the throttle in the idle position.
As shown in FIG. 3, when the engine is started, the cable 420 and the rotating rocker arm 410 are in the first position A, and the first arm 412 of the rotating rocker arm 410 pushes the choke pin 210, as shown in FIG. 2, since the torsion of the rotating torsion spring 414 is greater than the torsion of the choke torsion spring 240, the first arm 412 pushes the choke pin 210 by the torsion, so that the choke valve 220 is in the closed position. The second arm 413 of the rotary rocker arm 410 is moved away from the throttle latch pin 310 and the throttle is wide open.
As shown in fig. 4a and 4B, when the engine is running, the pulling cable 420 is pulled to rotate the cable 420 and the rotary rocker arm 410 to the second position B, at which the first arm 412 of the rotary rocker arm 410 is away from the choke pin 210 to be completely separated, and in conjunction with fig. 2, the choke valve 220 is opened to full opening under the torsion force of the choke torsion spring 240. The throttle can be operated from no load (position P1 shown in FIG. 4 a) to full open (position P2 shown in FIG. 4 b) to meet the requirement of normal engine operation.
As shown in FIG. 5, when the engine is idling, the cable 420 is pulled to place the cable 420 and the rotary rocker arm 410 in the third position C, at which time the first arm 412 of the rotary rocker arm 410 is further away from the choke pin 210, the first arm 412 is not engaged with the choke pin 210, and the choke valve 220 remains fully open. The second arm 413 of the rotary rocker arm 410 pushes against the throttle stop pin 310 to the idle position.
The embodiment is mainly used for the starting condition of the heat engine opening air door of the engine with special application.
Second embodiment
As shown in fig. 6a and 6b, a fuel supply system 10a for a general gasoline engine according to a second embodiment of the present invention has the same structure as that of the first embodiment with the same reference numerals, and the differences will be described below. The fuel supply system 10a of the general gasoline engine of the present embodiment further includes a diaphragm pump 510a disposed at the choke valve, installed on the body 100 through a guide fixture 430a, connected to the choke rocker arm 230 through a pull rod 520a, and communicated with the mixing chamber 540a through a connection pipe 530 a. Wherein the choke valve 220 is normally closed by a choke torsion spring 240 a.
As shown in fig. 7, when the engine is started, the cable 420 and the rotary rocker arm 410 are in the first position a, and at this time, the choke valve 220 is closed by the torsion force of the choke torsion spring 240a, and the rotary rocker arm 410 is pushed into contact with the choke pin 210 by the torsion force of the rotary torsion spring 414, so that the choke valve 220 is kept at the closed position. The second arm 413 of the rotary rocker arm 410 is moved away from the throttle latch pin 310 and the throttle is wide open.
As shown in fig. 8a and 8B, after the engine is started and during operation, the throttle valve is in the idle position, the pulling cable 420 is pulled to make the pulling cable 420 and the rotating rocker arm 410 be in the second position B, at this time, the first arm 412 of the rotating rocker arm 410 is far away from the choke stop pin 210 to be completely separated, and in combination with fig. 6B, as negative pressure is formed in the mixing chamber 540a after the engine is operated, the negative pressure acts on the diaphragm pump 510a through the connecting pipe 530a, so that the diaphragm pump 510a operates, and the pull rod 520a is driven to make the choke valve 220 open to the full open against the torsion force of the choke torsion spring 240 a. The throttle can be operated from no load (position P1 shown in FIG. 8 a) to full open (position P2 shown in FIG. 8 b) to meet the requirement of normal engine operation.
As shown in fig. 9, when the engine is idling, the cable 420 is pulled to place the cable 420 and the rotary rocker arm 410 in the third position C, and the first arm 412 of the rotary rocker arm 410 is further away from the choke pin 210, the first arm 412 is not engaged with the choke pin 210, and the choke valve 220 is still fully opened by the diaphragm pump 510 a. The second arm 413 of the rotary rocker arm 410 pushes against the throttle stop pin 310 to the idle position.
The engine stalls. In this embodiment, after the engine is turned off, the diaphragm pump 510a stops working, the cable 420 is in any position, and the choke valve automatically returns to the closed position under the action of the choke valve torsion spring 240a, so that preparation is provided for the next start, and the engine can be started by closing the choke valve under any condition. At the next start, when the engine is warm, the cable 420 is in the second or third position, and the choke valve 220 is open, starting the engine. When the engine has cooled, it is desirable to pull the cable 420 to the first position, the choke valve 220 is closed, and the engine is started.
The present invention may be embodied in other specific forms without departing from the spirit or essential attributes thereof, and it should be understood that various changes and modifications can be effected therein by one skilled in the art without departing from the spirit and scope of the invention as defined in the appended claims.
Claims (10)
1. The utility model provides a general gasoline engine fuel feeding system, includes the body and connects choke valve slewing mechanism and throttle valve slewing mechanism on the body, choke valve slewing mechanism includes the choke valve, throttle valve slewing mechanism includes the throttle valve, its characterized in that still includes cable control mechanism, and it includes:
the rotary rocker arm comprises a rotating shaft, a first support arm and a second support arm, wherein the first support arm and the second support arm are connected to the rotating shaft; and
the pull cable is connected to the first support arm or the second support arm, wherein the choke valve rotating mechanism is provided with a choke valve stop pin corresponding to the first support arm and connected with the choke valve, the throttle valve rotating mechanism is provided with a throttle valve stop pin corresponding to the second support arm and connected with the throttle valve, the pull cable drives the rotating shaft to rotate so that the first support arm/the second support arm is pushed or separated from the choke valve stop pin/the throttle valve stop pin, wherein the first support arm directly pushes the choke valve stop pin to adjust the opening degree of the choke valve, and the second support arm directly pushes the throttle valve stop pin to adjust the opening degree of the throttle valve.
2. The fuel supply system of a general gasoline engine as set forth in claim 1, wherein the rotation shaft is connected to the body through a rotary torsion spring.
3. A fuel supply system for a general gasoline engine as set forth in claim 1, wherein the cable control mechanism further comprises a guide fixing member attached to the body, and the cable is fixed and guided by the guide fixing member.
4. The fuel supply system of the general gasoline engine according to claim 1, wherein the choke valve rotating mechanism includes a choke valve, a choke valve rocker arm and a choke valve torsion spring, the choke valve is connected to the choke valve rocker arm, the choke valve rocker arm is connected to the body through the choke valve torsion spring, and the choke valve stop pin is connected to the choke valve rocker arm.
5. The fuel supply system of a general purpose gasoline engine as defined in claim 4, wherein the choke valve is normally open by the choke torsion spring, and the first arm pushes against the choke pin to close the choke valve.
6. The fuel supply system of the general gasoline engine according to claim 4, wherein the choke valve is in a normally closed state by the choke valve torsion spring, the first support arm pushes the choke valve stop pin to keep the choke valve closed, and the cable control mechanism further comprises a diaphragm pump connected with the choke valve rocker arm by a pull rod.
7. The fuel supply system of a general gasoline engine as set forth in claim 1, wherein the cable control mechanism further comprises a control module connected to the cable, and the control module controls the cable to position the first arm and the second arm at a first position when the engine is started, a second position when the engine is running, and a third position when the engine is idling, respectively.
8. The fuel supply system of claim 7, wherein in the first position, the first arm is biased against the choke pin and the second arm is biased away from the choke pin.
9. The universal gasoline engine fuel supply system of claim 7 wherein in the second position, the first arm is not applying force to the choke pin and the second arm is not applying force to the throttle pin.
10. The universal gasoline engine fuel supply system of claim 7 wherein in a third position, the first arm is away from the choke pin and the second arm pushes against the throttle pin.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610628422.2A CN107687378B (en) | 2016-08-03 | 2016-08-03 | Fuel supply system of general gasoline engine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610628422.2A CN107687378B (en) | 2016-08-03 | 2016-08-03 | Fuel supply system of general gasoline engine |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107687378A CN107687378A (en) | 2018-02-13 |
| CN107687378B true CN107687378B (en) | 2021-03-09 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610628422.2A Active CN107687378B (en) | 2016-08-03 | 2016-08-03 | Fuel supply system of general gasoline engine |
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| CN (1) | CN107687378B (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111692016B (en) * | 2019-03-13 | 2024-07-23 | 华益机电有限公司 | Fuel supply system |
| CN112943485A (en) * | 2021-02-24 | 2021-06-11 | 隆鑫通用动力股份有限公司 | Universal engine |
Family Cites Families (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2537212A1 (en) * | 1982-12-07 | 1984-06-08 | Renault | AUTOMATIC STARTER DEVICE FOR CARBURETORS |
| US6439547B1 (en) * | 2001-03-05 | 2002-08-27 | Walbro Corporation | Carburetor throttle and choke control mechanism |
| DE102005039926B4 (en) * | 2005-08-24 | 2015-09-24 | Andreas Stihl Ag & Co. Kg | carburettor |
| JP4523543B2 (en) * | 2005-12-14 | 2010-08-11 | 本田技研工業株式会社 | Engine carburetor automatic control device |
| DE202009000831U1 (en) * | 2009-01-22 | 2010-06-17 | Dolmar Gmbh | Carburettor unit for a motor unit |
| CN201635865U (en) * | 2009-12-21 | 2010-11-17 | 陈俭敏 | Carburetor and throttle valve and choke valve linked starting device thereof |
| DE102010048773A1 (en) * | 2010-10-16 | 2012-04-19 | Andreas Stihl Ag & Co. Kg | carburettor |
| JP5204281B2 (en) * | 2011-09-20 | 2013-06-05 | 富士重工業株式会社 | Engine operation control device |
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| CN107687378A (en) | 2018-02-13 |
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