CN110966119A - Mechanism for realizing linkage of carburetor choke valve and throttle valve by utilizing engine heat - Google Patents
Mechanism for realizing linkage of carburetor choke valve and throttle valve by utilizing engine heat Download PDFInfo
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- CN110966119A CN110966119A CN201811160506.3A CN201811160506A CN110966119A CN 110966119 A CN110966119 A CN 110966119A CN 201811160506 A CN201811160506 A CN 201811160506A CN 110966119 A CN110966119 A CN 110966119A
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- Prior art keywords
- rocker arm
- carburetor
- push
- rod
- choke valve
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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
- F02M1/08—Carburettors with means for facilitating engine's starting or its idling below operational temperatures the means to facilitate starting or idling becoming operative or inoperative automatically
- F02M1/10—Carburettors with means for facilitating engine's starting or its idling below operational temperatures the means to facilitate starting or idling becoming operative or inoperative automatically dependent on engine temperature, e.g. having thermostat
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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
- F02M7/00—Carburettors with means for influencing, e.g. enriching or keeping constant, fuel/air ratio of charge under varying conditions
- F02M7/12—Other installations, with moving parts, for influencing fuel/air ratio, e.g. having valves
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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 mechanism for realizing linkage of a carburetor choke valve and a throttle valve by utilizing heat of an engine, which comprises: the first rocker arm and the second rocker arm are arranged at the shaft end of the carburetor shell with the choke shaft extending outwards; the third rocker arm is arranged at the shaft end of the carburetor shell, which extends outwards from the throttle shaft; one end of the push-pull plate is hinged on the carburetor shell, and the other end of the push-pull plate is in poking connection with the first rocker arm; the driving end of the driving part is fixedly connected with the position, close to the hinged position, of the push-pull plate; and the middle part of the toggle connecting rod is rotatably connected to the carburetor shell and is positioned between the second rocker arm and the third rocker arm, and the two ends of the toggle connecting rod are in one-to-one correspondence with the second rocker arm and the third rocker arm respectively and are in toggle connection. The linkage mechanism can realize linkage of opening and closing of the choke valve and the throttle valve so as to ensure that the carburetor can realize the requirements of cold and heat engine starting more intelligently under different environments.
Description
Technical Field
The invention relates to the technical field of carburettors, in particular to a mechanism for realizing linkage of a carburetor choke valve and a throttle valve by utilizing heat of an engine.
Background
The carburetor is a mechanical device which mixes gasoline and air in a certain proportion under the action of vacuum generated by the operation of an engine. Specifically, the carburetor can automatically match corresponding concentration according to different working state requirements of the engine and output corresponding amount of mixed gas, and in order to enable the mixed gas to be mixed uniformly, the carburetor also has the effect of atomizing fuel oil so as to enable a machine to normally run. Its important role in the engine may be referred to as the engine's "heart". The complete device comprises a starting device, an idling device, a medium load device, a full load device and an accelerating device.
At present, in a carburetor with a choke valve and a throttle valve, a manual handle is needed to rotate a rocker arm of a choke valve shaft to close the choke valve to reduce air quantity at the initial starting stage of an engine, and the aim of facilitating starting of an enrichment mixer is fulfilled; after the engine is started, the choke valve rocker arm is rotated by a manual handle to open the choke valve and enable the choke valve to be in a fully open position, and the throttle valve is in the fully open position after the engine is started to ensure that the engine works normally.
There are generally two ways of opening and closing the choke and throttle valves: one is that the choke valve is operated by hand, the air throttle is the control operation of the speed regulating system, and the choke valve and air throttle are controlled separately, wherein, the control air throttle of the speed regulating system is to operate the switch at the same time through the control of the throttle combination control and speed regulating system with hand grip, realize the high and low speed control, when the cold engine starts, the choke valve is closed, the air throttle is fully opened and is favorable to the engine start, but the user needs to operate the choke valve hand grip and throttle combination hand grip separately, the operation is extremely inconvenient; in another mode, stepping motors are arranged on a choke valve shaft and a throttle valve shaft to control the opening and closing of the choke valve and the throttle valve. However, the structure is complex, a stepping motor mounting bracket and an upper cover are needed, and a relatively complex circuit control system needs to be arranged on the engine structure, so that the cost of the whole engine and the single body of the carburetor is relatively high.
Therefore, how to provide a linkage mechanism which has a simple structure and is easy to realize the closing and opening of a choke valve and a throttle valve of a carburetor so as to ensure that the carburetor can realize the requirements of cold and hot engine starting more intelligently under different environments; the realization of the linkage mechanism can enable an operator to carry out remote intelligent control on the starting of the engine. Therefore, this technique is a problem that needs to be solved by those skilled in the art.
Disclosure of Invention
In view of the above, the present invention provides a pushing mechanism designed based on the principle of paraffin expansion by heat conduction based on the temperature of the cylinder head when the engine is started, so as to realize the linkage of the closing and opening of the choke valve and the throttle valve of the carburetor, and ensure that the carburetor can realize the starting requirements of the cold engine and the heat engine more intelligently in different environments.
In order to achieve the purpose, the invention adopts the following technical scheme:
the utility model provides an utilize engine heat to realize mechanism of carburetor choke valve and air throttle linkage, wherein the carburetor is connected with general small-size gasoline engine, and the choke valve sets up on the choke shaft, and the air throttle setting is on the throttle shaft, and choke shaft and throttle shaft all rotate and establish on the carburetor casing, include:
the first rocker arm and the second rocker arm are both vertically and fixedly connected with the shaft end of the carburetor shell with the choke valve shaft extending outwards, and the second rocker arm and the first rocker arm are arranged up and down;
the third rocker arm is vertically and fixedly connected with the shaft end of the carburetor shell with the throttle shaft extending outwards;
one end of the push-pull plate is hinged to the carburetor shell, and the other end of the push-pull plate is in poking connection with the first rocker arm;
the driving part is fixedly connected with the engine cylinder head and used for driving the push-pull plate to swing, the driving part is arranged on the carburetor shell, and the driving end of the driving part is fixedly connected with the position, close to the hinged position, of the push-pull plate; and
and the middle part of the toggle connecting rod is rotatably connected to the carburetor shell and is positioned between the second rocker arm and the third rocker arm, and two ends of the toggle connecting rod are in one-to-one correspondence with the second rocker arm and the third rocker arm and are in toggle connection with the second rocker arm and the third rocker arm respectively.
According to the technical scheme, compared with the prior art, the mechanism for realizing linkage of the choke valve and the throttle valve of the carburetor by using the heat of the engine is simple, low in cost and easy to realize.
Further, the first rocker arm includes:
one end of the connecting plate is vertically and fixedly connected with the shaft end of the carburetor shell with the choke valve shaft extending outwards, and is positioned below the second rocker arm;
the cylindrical pin is perpendicular to the connecting plate and is fixedly connected with the other end of the connecting plate, and the upper end of the cylindrical pin is connected with the other end of the push-pull plate in a shifting mode.
Further, the driving part includes: the carburetor comprises a carburetor shell, a first driving part and a second driving part, wherein the carburetor shell is provided with a first driving part and a second driving part, the driving end of the first driving part is abutted against one end of a driving part on the second driving part, and the other end of the driving part is fixedly connected with the push-pull plate close to the hinged position of the push-pull plate.
Further, the first driving part includes: the connecting piece is arranged on the carburetor shell and fixedly connected with the engine cylinder head, the connecting piece is of a hollow cavity structure, paraffin is filled at one side, close to the engine cylinder head, in the hollow cavity, the paraffin is in heat transfer connection with the engine cylinder head, an ejector rod is arranged at the other side of the hollow cavity, one end of the ejector rod is abutted against the paraffin, and the other end of the ejector rod is abutted against one end of the driving piece on the second driving part. The paraffin is a thermal expansion piece, when the heat of the engine is transferred to the paraffin, the paraffin is heated to expand, the ejector rod is pushed to move in the hollow cavity, and then the second driving part is pushed to act.
Further, the second driving part includes: the limiting sleeve is arranged on the carburetor shell and is provided with an accommodating cavity, and a check ring and a spring are arranged in the accommodating cavity;
one end of the push rod penetrates through the accommodating cavity and penetrates through the retainer ring to be fixedly connected with the retainer ring, the end part of the push rod is abutted against the other end of the ejector rod, and the other end of the push rod extends out of the accommodating cavity and is fixedly connected with the push-pull plate close to the hinged position of the push rod;
the spring sleeve is arranged on the push rod in the accommodating cavity, one end of the spring is abutted to the inner side wall of the accommodating cavity, and the other end of the spring is abutted to one side end face of the retainer ring.
In the technical scheme, the push rod is pushed by the push rod to overcome the elastic force of the spring and then the push-pull plate is pushed to rotate.
Further, the push rod includes:
one end of the straight rod penetrates through the accommodating cavity and is fixedly connected with the retainer ring by penetrating through the retainer ring, the end part of the straight rod is abutted against the other end of the ejector rod, the spring is sleeved on the straight rod, and the other end of the straight rod is exposed out of the accommodating cavity;
and one end of the bending rod is integrally connected with the other end of the straight rod, and the other end of the bending rod is fixedly connected with the push-pull plate close to the hinged position of the push-pull plate.
Furthermore, a limiting hole is formed in the position, close to the hinged position, of the push-pull plate, one end, far away from the straight rod, of the bending rod is in a hook shape, and the hook is hung in the limiting hole so as to fixedly connect the bending rod with the push-pull plate.
Further, the spring is a tower-shaped spring. The tower-shaped spring has the advantages of small volume, large load and variable stiffness, is widely applied to occasions with small space and large load, and has good damping effect.
The middle part of the toggle connecting rod is rotatably connected with the upper end of the upright post;
the torsional spring, the torsional spring cover is established on the stand, torsional spring one end is fixed on the stand, the other end is fixed stir the lower surface of connecting rod.
Furthermore, the contact surface of the third rocker arm and the shifting connecting rod is an arc-shaped surface, so that the shifting connection between the third rocker arm and the shifting connecting rod is more stable.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the provided drawings without creative efforts.
FIG. 1 is a partial cross-sectional view of a mechanism for utilizing engine heat to effect linkage of a carburetor choke and throttle in accordance with the present invention.
Fig. 2 is a schematic top view of the structure of fig. 1.
Fig. 3 is a schematic axial side view of the drawing of fig. 1.
Wherein:
1-choke valve shaft, 11-first rocker arm, 111-connecting plate, 112 cylindrical pin, 12-second rocker arm, 2-throttle valve shaft, 21-third rocker arm, 3-push-pull plate, 4-driving part, 41-first driving part, 411-connecting piece, 412-paraffin, 413-ejector rod, 42-second driving part, 421-limiting sleeve, 422-retaining ring, 423-spring, 424-push rod, 4241-straight rod, 4242-bending rod, 5-toggle connecting rod and 6-upright post.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Referring to fig. 1-3, the embodiment of the invention discloses a mechanism for realizing linkage of a choke valve and a throttle valve of a carburetor by using heat of an engine, wherein the carburetor is connected with a universal small gasoline engine, the choke valve is arranged on a choke shaft 1, the throttle valve is arranged on a throttle shaft 2, and the choke shaft 1 and the throttle shaft 2 are both rotatably arranged on a carburetor shell, and the mechanism is characterized by comprising:
the choke valve comprises a first rocker arm 11 and a second rocker arm 12, wherein the first rocker arm 11 and the second rocker arm 12 are both vertically and fixedly connected with the shaft end of a carburetor shell extending outwards from a choke valve shaft 1, and the second rocker arm 12 and the first rocker arm 11 are arranged up and down;
the third rocker arm 21 is vertically and fixedly connected with the shaft end of the carburetor shell, which extends outwards from the throttle shaft 2, of the third rocker arm 21;
one end of the push-pull plate 3 is hinged on the carburetor shell, and the other end of the push-pull plate 3 is in poking connection with the first rocker arm 11;
the driving part 4 is fixedly connected with the engine cylinder head and used for driving the push-pull plate 3 to swing, the driving part 4 is arranged on the carburetor shell, and the driving end of the driving part 4 is fixedly connected with the position, close to the hinged position, of the push-pull plate 3; and
It should be noted that, in order to make the toggle connection between the third rocker arm 21 and the toggle connecting rod 5 more stable, the contact surface between the third rocker arm 21 and the toggle connecting rod 5 is preferably an arc surface.
Wherein the first rocker arm 11 comprises:
one end of the connecting plate 111 is vertically and fixedly connected with the shaft end of the carburetor shell extending out of the choke shaft 1 and is positioned below the second rocker arm 12;
and the cylindrical pin 112 is vertically arranged with the connecting plate 111 and is fixedly connected with the other end of the connecting plate, and the upper end of the cylindrical pin 112 is connected with the other end of the push-pull plate 3 in a shifting manner.
The structure of the driving part in the invention is as follows:
the drive section 4 includes: the carburetor comprises a first driving part 41 and a second driving part 42 which are arranged on a carburetor shell, wherein the driving end of the first driving part 41 is abutted against one end of a driving part on the second driving part 42, and the other end of the driving part is fixedly connected with the push-pull plate 3 close to the hinged position of the push-pull plate.
Specifically, the first driving portion 41 includes: the connecting piece 411 is arranged on the carburetor shell and fixedly connected with the engine cylinder head, the connecting piece 411 is of a hollow cavity structure, paraffin 412 is filled at one side, close to the engine cylinder head, in the hollow cavity, the paraffin 412 is in heat transfer connection with the engine cylinder head, a push rod 413 is arranged at the other side, one end of the push rod 413 is abutted against the paraffin 412, and the other end of the push rod 413 is abutted against one end of a driving piece on the second driving portion 42.
The second driving portion 42 includes: the limiting sleeve 421 is arranged on the carburetor shell, the limiting sleeve 421 is provided with an accommodating cavity, and a check ring 422 and a spring 423 are arranged in the accommodating cavity;
one end of the push rod 424 penetrates through the accommodating cavity, penetrates through the retainer ring 422 and is fixedly connected with the retainer ring 422, the end of the push rod 424 is abutted against the other end of the push rod 413, and the other end of the push rod 424 extends out of the accommodating cavity and is fixedly connected with the push-pull plate 3 close to the hinged position of the push rod 424;
wherein, the spring 423 is sleeved on the push rod 424 in the accommodating cavity, one end of the spring 424 is abutted against the inner side wall of the accommodating cavity, and the other end is abutted against one side end face of the retainer ring 422. Preferably, the spring 423 is a tower spring.
In order to optimize the above technical solution, the push rod 424 includes:
one end of the straight rod 4241 penetrates through the accommodating cavity, penetrates through the retaining ring 422 and is fixedly connected with the retaining ring 422, the end part of the straight rod 4241 is abutted against the other end of the ejector rod 413, the spring 423 is sleeved on the straight rod 4241, and the other end of the straight rod 4241 is exposed out of the accommodating cavity;
one end of the bending rod 4242 is integrally connected with the other end of the straight rod 4241, and the other end of the bending rod 4242 is fixedly connected with the push-pull plate 3 close to the hinged position of the push-pull plate.
In order to optimize the technical scheme, a limiting hole is formed in the position, close to the hinged position, of the push-pull plate 3, one end, far away from the straight rod 4241, of the bending rod 4242 is in a hook shape, and the hook is hung in the limiting hole so as to fixedly connect the bending rod 4242 with the push-pull plate 3.
The invention also provides some embodiments, the carburetor also comprises an upright post 6 arranged on the carburetor shell, and the middle part of the toggle connecting rod 5 is rotationally connected with the upper end of the upright post 6;
a torsion spring (not shown) sleeved on the upright post 6, one end of the torsion spring is fixed on the upright post 6, and the other end is fixed on the lower surface of the toggle connecting rod 5.
The working principle of the linkage mechanism of the invention is as follows:
state 1, engine off state:
when the engine does not work, the choke valve on the choke valve shaft arranged on the carburetor is in a closed state under the elastic force action of the torsion spring of the choke valve shaft, the connecting rod is stirred to be not in contact with the second rocker arm under the action of the torsion spring, meanwhile, because the engine does not work, the engine cylinder head does not generate heat, the heat transfer cannot be generated between the paraffin and the engine cylinder head, the paraffin is in a non-expansion state, and the linkage mechanism does not act.
when an engine is started by manually pulling an engine rope, a speed regulation pull rod and a speed regulation tension spring (of the existing structure) are arranged in an inner hole of a throttle valve shaft assembly, the throttle valve shaft assembly is pulled to rotate, the throttle valve is in a working state of 60% -65% of opening degree, at the moment, a third rocker arm rotates clockwise and pushes a toggle connecting rod to rotate, the other end of the toggle connecting rod rotates anticlockwise to contact a second rocker arm, namely, the choke valve shaft rotates, and the choke valve is in 65% -75% of opening degree; at the moment, the engine is in a working state, the high-temperature heat at the cylinder head part of the spark plug of the engine is transmitted to the paraffin in the connecting piece, at the moment, the paraffin expands under heat to push the ejector rod to extend, further push the push rod to overcome the elastic action of the tower-shaped spring to move, then push the push-pull plate to rotate, and stir the cylindrical pin on the first rocker arm to rotate, so that the choke valve is in a full-open position within 30 seconds. It should be noted that, when the engine is in a working state, the paraffin is always in an expansion state, and the push-pull plate is always in contact with the cylindrical pin on the first rocker arm, so that the choke valve is always in a fully open state.
when the engine is closed, the throttle valve on the throttle valve shaft is pushed to be in a fully-opened state under the pushing and pulling action of the speed regulation pull rod and the speed regulation tension spring, and the third rocker arm on the throttle valve shaft is separated from the shifting connecting rod at the moment, so that the shifting connecting rod rotates clockwise by an angle under the action of the torsion spring of the third rocker arm, and the shifting connecting rod is not contacted with the second rocker arm. However, the temperature of the cylinder head of the engine which is just stopped is hotter, the paraffin is still in an expansion state under the action of the residual temperature of the engine, the choke valve on the choke valve shaft is always in a full-open position, when the temperature of the cylinder head of the engine does not exist, the paraffin does not expand, and the retainer ring pushes the ejector rod to return to the original initial position under the action of the return elastic force of the inner tower type spring.
The invention relates to a linkage mechanism for realizing the closing and opening of a choke valve and a throttle valve of a carburetor by utilizing the temperature on a cylinder head when an engine is started and by adopting a heat conduction paraffin expansion principle and designing a pushing mechanism with a simple structure, so as to ensure that the carburetor can realize the starting requirements of cold and heat engines more intelligently under different environments; the intelligent control system is simple, reliable and feasible in structure, and can meet the intelligent requirement.
The embodiments in the present description are described in a progressive manner, each embodiment focuses on differences from other embodiments, and the same and similar parts among the embodiments are referred to each other. The device disclosed by the embodiment corresponds to the method disclosed by the embodiment, so that the description is simple, and the relevant points can be referred to the method part for description.
The above description of the disclosed embodiments is not intended to limit the invention to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
Claims (10)
1. The utility model provides an utilize engine heat to realize mechanism of carburetor choke valve and air throttle linkage, wherein the carburetor is connected with general small-size gasoline engine, and the choke valve sets up on choke shaft (1), and the air throttle setting is on throttle shaft (2), and choke shaft (1) and throttle shaft (2) are all rotated and are established on the carburetor casing, its characterized in that includes:
the choke valve assembly comprises a first rocker arm (11) and a second rocker arm (12), wherein the first rocker arm (11) and the second rocker arm (12) are both vertically and fixedly connected with the shaft end of a carburetor shell with the choke valve shaft (1) extending outwards, and the second rocker arm (12) and the first rocker arm (11) are arranged up and down;
the third rocker arm (21) is vertically and fixedly connected with the shaft end of the carburetor shell, which extends outwards from the throttle shaft (2), of the third rocker arm (21);
one end of the push-pull plate (3) is hinged to the carburetor shell, and the other end of the push-pull plate (3) is in poking connection with the first rocker arm (11);
the driving part (4) is fixedly connected with the engine cylinder head and used for driving the push-pull plate (3) to swing, the driving part (4) is arranged on the carburetor shell, and the driving end of the driving part (4) is fixedly connected with the position, close to the hinged position, of the push-pull plate (3); and
the middle part of the toggle connecting rod (5) is rotatably connected to the carburetor shell and is positioned between the second rocker arm (12) and the third rocker arm (21), and two ends of the toggle connecting rod (5) are in one-to-one correspondence with the second rocker arm (12) and the third rocker arm (21) and are in toggle connection with the second rocker arm (12) and the third rocker arm (21) respectively.
2. A mechanism for effecting linkage of a carburettor choke valve and a throttle valve using engine heat in accordance with claim 1 wherein the first rocker arm (11) comprises:
one end of the connecting plate (111) is vertically and fixedly connected with the shaft end of the carburetor shell extending out of the choke shaft (1) and is positioned below the second rocker arm (12);
the cylindrical pin (112) is perpendicular to the connecting plate (111) and is fixedly connected with the other end of the connecting plate, and the upper end of the cylindrical pin (112) is connected with the other end of the push-pull plate (3) in a shifting mode.
3. A mechanism for effecting linkage of a carburetor choke valve and a throttle valve using engine heat according to claim 1 or 2, characterized in that the driving portion (4) comprises: the carburetor comprises a first driving part (41) and a second driving part (42) which are arranged on a carburetor shell, wherein the driving end of the first driving part (41) is abutted against one end of a driving part on the second driving part (42), and the other end of the driving part is fixedly connected with the push-pull plate (3) close to the hinged position of the push-pull plate.
4. A mechanism for effecting linkage of a carburetor choke valve and a throttle valve using engine heat according to claim 3, characterized in that the first drive portion (41) comprises: the connecting piece (411) is arranged on the carburetor shell and fixedly connected with the engine cylinder head, the connecting piece (411) is of a hollow cavity structure, paraffin (412) is filled at one side, close to the engine cylinder head, in the hollow cavity, the paraffin (412) is in heat transfer connection with the engine cylinder head, an ejector rod (413) is arranged at the other side of the hollow cavity, one end of the ejector rod (413) is abutted against the paraffin (412), and the other end of the ejector rod (413) is abutted against one end of the driving piece on the second driving portion (42).
5. A mechanism for utilizing engine heat to effect a carburetor choke valve and throttle linkage according to claim 4, wherein said second drive portion (42) includes: the limiting sleeve (421) is arranged on the carburetor shell, the limiting sleeve (421) is provided with an accommodating cavity, and a check ring (422) and a spring (423) are arranged in the accommodating cavity;
one end of the push rod (424) penetrates through the accommodating cavity, penetrates through the retainer ring (422) and is fixedly connected with the retainer ring (422), the end part of the push rod is abutted against the other end of the ejector rod (413), and the other end of the push rod (424) extends out of the accommodating cavity and is fixedly connected with the push-pull plate (3) close to the hinged position of the push rod;
the spring (423) is sleeved on the push rod (424) in the accommodating cavity, one end of the spring (424) is abutted to the inner side wall of the accommodating cavity, and the other end of the spring is abutted to one side end face of the retainer ring (422).
6. A mechanism for utilizing engine heat to effect a carburetor choke valve and throttle linkage according to claim 5, wherein said pushrod (424) includes:
one end of the straight rod (4241) penetrates through the accommodating cavity, penetrates through the retaining ring (422) and is fixedly connected with the retaining ring (422), the end part of the straight rod is abutted against the other end of the ejector rod (413), the spring (423) is sleeved on the straight rod (4241), and the other end of the straight rod (4241) is exposed out of the accommodating cavity;
one end of the bending rod (4242) is integrally connected with the other end of the straight rod (4241), and the other end of the bending rod (4242) is fixedly connected with the push-pull plate (3) close to the hinged position of the push-pull plate.
7. The mechanism for realizing linkage of a carburetor choke valve and a throttle valve by utilizing engine heat as claimed in claim 6, wherein a limit hole is formed in the push-pull plate (3) near the hinged position thereof, one end of the bending rod (4242) far away from the straight rod (4241) is in a hook shape, and the hook is hung in the limit hole to fixedly connect the bending rod (4242) and the push-pull plate (3).
8. A mechanism for utilising engine heat to effect a carburettor's choke valve to throttle valve linkage according to any one of claims 5 to 7 characterised in that the spring (423) is a stepped spring.
9. The mechanism for linking the choke valve and the throttle valve of a carburetor according to any one of claims 1 to 4 or 8, wherein the choke valve and the throttle valve are linked by using the heat of the engine,
the carburetor also comprises an upright post (6) arranged on the carburetor shell, and the middle part of the toggle connecting rod (5) is rotatably connected with the upper end of the upright post (6);
the torsion spring is sleeved on the stand column (6), one end of the torsion spring is fixed on the stand column (6), and the other end of the torsion spring is fixed on the lower surface of the stirring connecting rod (5).
10. A mechanism for utilising engine heat to effect a carburettor choke and throttle linkage as claimed in claim 9 wherein the contact surface of the third rocker arm (21) with the toggle linkage (5) is arcuate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811160506.3A CN110966119A (en) | 2018-09-30 | 2018-09-30 | Mechanism for realizing linkage of carburetor choke valve and throttle valve by utilizing engine heat |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811160506.3A CN110966119A (en) | 2018-09-30 | 2018-09-30 | Mechanism for realizing linkage of carburetor choke valve and throttle valve by utilizing engine heat |
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| Publication Number | Publication Date |
|---|---|
| CN110966119A true CN110966119A (en) | 2020-04-07 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811160506.3A Pending CN110966119A (en) | 2018-09-30 | 2018-09-30 | Mechanism for realizing linkage of carburetor choke valve and throttle valve by utilizing engine heat |
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| CN (1) | CN110966119A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112943485A (en) * | 2021-02-24 | 2021-06-11 | 隆鑫通用动力股份有限公司 | Universal engine |
-
2018
- 2018-09-30 CN CN201811160506.3A patent/CN110966119A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112943485A (en) * | 2021-02-24 | 2021-06-11 | 隆鑫通用动力股份有限公司 | Universal engine |
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