CN212583838U - Universal gasoline engine carburetor - Google Patents
Universal gasoline engine carburetor Download PDFInfo
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- CN212583838U CN212583838U CN202021454882.6U CN202021454882U CN212583838U CN 212583838 U CN212583838 U CN 212583838U CN 202021454882 U CN202021454882 U CN 202021454882U CN 212583838 U CN212583838 U CN 212583838U
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- air channel
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- adjusting
- idle air
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Abstract
The utility model discloses a general gasoline engine carburetor, include: a body; the transition oil system comprises an idle air channel arranged in the machine body, one end of the idle air channel is provided with an idle air metering hole, the other end of the idle air channel is provided with an idle mixing ratio screw, and the middle part of the idle air channel is provided with an idle metering hole; the main oil system comprises a main air channel arranged in the machine body, one end of the main air channel is provided with a main air metering orifice, the other end of the main air channel is provided with a main jet pipe, and the end part of the main jet pipe is provided with a main metering orifice; a first adjusting mechanism is installed in the idle air channel and used for adjusting the size of the cross section of the idle air channel; and a second adjusting mechanism is arranged in the main air channel and used for adjusting the size of the cross section of the main air channel. The utility model discloses an adjust corresponding air passage size to realize adjusting the air-fuel ratio that the main oil was with excessive oil system.
Description
Technical Field
The utility model belongs to the technical field of the carburetor, especially, relate to a general gasoline engine carburetor.
Background
Currently, emission regulatory limits for general purpose gasoline engines are becoming more stringent, with carburetors playing a vital role, so that the level of carburettor compliance will largely determine the level of emission compliance of the engine. Current carburetor consistency control is the biggest challenge in carburetor manufacturing. In the prior art, the production process of a universal gasoline engine carburetor mainly controls the consistency of each hole, the tolerance after the assembly is assembled is compensated by adjusting an idle mixing ratio screw on a flow table, and the idle mixing ratio screw is subjected to anti-tampering treatment after the flow of an idle point reaches an ideal value. However, the adjusting range of the idle mixing ratio screw is very limited, only the air-fuel ratio of the idle speed or the low speed section can be adjusted, the transition point and the load point cannot be adjusted, and the idle mixing ratio screw cannot be adjusted and corrected if the unqualified point occurs at the medium-high load point.
SUMMERY OF THE UTILITY MODEL
The utility model aims at solving the problem that the adjusting range of the idle mixing ratio screw is very limited in the existing carburetor of the gasoline engine, and if the unqualified point appears at the middle and high load point, the idle mixing ratio screw cannot adjust and correct the defect, and the utility model provides a universal carburetor of the gasoline engine.
In order to achieve the above purpose, the utility model adopts the following technical scheme:
a carburetor for a general gasoline engine, comprising:
a body;
the transition oil system comprises an idle air channel arranged in the machine body, one end of the idle air channel is provided with an idle air metering hole, the other end of the idle air channel is provided with an idle mixing ratio screw, and the middle part of the idle air channel is provided with an idle metering hole;
the main oil system comprises a main air channel arranged in the machine body, one end of the main air channel is provided with a main air metering orifice, the other end of the main air channel is provided with a main jet pipe, and the end part of the main jet pipe is provided with a main metering orifice;
a first adjusting mechanism is installed in the idle air channel and used for adjusting the size of the cross section of the idle air channel;
and a second adjusting mechanism is arranged in the main air channel and used for adjusting the size of the cross section of the main air channel.
Preferably, the first adjusting mechanism comprises an adjusting rod, threads are arranged in the middle of the adjusting rod and are threaded portions, threaded holes for installing threaded portions are formed in the machine body, one end of the adjusting rod is a limiting end, the limiting end penetrates into the idle air channel in a sealing mode, and part of the limiting end is located in the idle air channel.
Preferably, one end of the adjusting rod, which is far away from the idle air channel, is an adjusting end, and the adjusting end is located outside the machine body and used for driving the whole adjusting rod to rotate.
Preferably, the limiting end, the threaded portion and the adjusting end are integrally formed.
Compared with the prior art, the beneficial effects of the utility model are that:
a first adjusting mechanism and a second adjusting mechanism are respectively added to the main air channel and the idle air channel, and the air-fuel ratio of the main oil system and the excess oil system is adjusted by adjusting the sizes of the corresponding air channels;
compared with the prior art, the air-fuel ratio control device has the advantages that the idle oil system and the main oil system are additionally provided with the adjusting mechanisms, and when the air-fuel ratio does not reach an ideal value, the idle point, the transition point and each load point can reach the ideal air-fuel ratio by adjusting the corresponding adjusting mechanisms.
Drawings
FIG. 1 is a schematic structural diagram of a transition oil system of a carburetor of a general gasoline engine according to the present invention;
FIG. 2 is a schematic structural diagram of a main oil system of a carburetor of a general gasoline engine according to the present invention;
fig. 3 is an enlarged view of a structure a in fig. 1.
In the figure: 1 idle air volume hole, 2 first adjusting mechanism, 21 limiting end, 22 thread part, 23 adjusting end, 3 idle air channel, 4 idle volume hole, 5 idle mixing ratio screw, 6 main air volume hole, 7 main air channel, 8 second adjusting mechanism, 9 main spray pipe and 10 main spray hole.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings, and it is to be understood that the described embodiments are only some embodiments, but not all embodiments of the present invention. In the description of the present invention, it is to be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be construed as limiting the present invention.
Examples
Referring to fig. 1-3, a carburetor for a general gasoline engine includes:
a body;
the transition oil system comprises an idle air channel 3 arranged in the machine body, one end of the idle air channel 3 is provided with an idle air metering hole 1, the other end of the idle air channel is provided with an idle mixing ratio screw 5, and the middle part of the idle air channel is provided with an idle metering hole 4;
the main oil system comprises a main air channel 7 arranged in the machine body, one end of the main air channel 7 is provided with a main air metering orifice 6, the other end of the main air channel 7 is provided with a main jet 9, and the end part of the main jet 9 is provided with a main metering orifice 10;
wherein the content of the first and second substances,
a first adjusting mechanism 2 is arranged in the idle air channel 3, and the first adjusting mechanism 2 is used for adjusting the cross section size of the idle air channel 3;
a second adjusting mechanism 8 is installed in the main air channel 7, and the second adjusting mechanism 8 is used for adjusting the size of the cross section of the main air channel 7.
In the embodiment applying the technical scheme, the first adjusting mechanism 2 is arranged in the idle air channel 3, so that a producer can adjust the cross section size of the idle air channel 3 by using the first adjusting mechanism 2, and further adjust the flow rate of the idle air channel, and further adjust the air-fuel ratio of the transition oil system; similarly, a second adjusting mechanism 8 is arranged in the main air channel 7, so that a producer can adjust the air-fuel ratio of the main oil system through the second adjusting mechanism 8 conveniently; when the air-fuel ratio does not reach the ideal value, the idling point, the transition point and each load point can reach the ideal air-fuel ratio by adjusting the corresponding adjusting mechanism.
In the optional technical scheme, the first adjusting mechanism 2 comprises an adjusting rod, the middle of the adjusting rod is provided with threads which are threaded portions 22, threaded holes for installing the threaded portions 22 are formed in the machine body, one end of the adjusting rod is a limiting end 21, the limiting end 21 penetrates into the idle air channel 3 in a sealing mode, part of the adjusting rod is located in the idle air channel 3, the other end of the adjusting rod is an adjusting end 23, and the adjusting end 23 is located outside the machine body.
In the embodiment applying the technical scheme, an operator can rotate the adjusting end 23 through a corresponding tool to drive the whole adjusting rod to rotate, so that the adjusting rod moves axially, the degree of the limiting end 21 extending into the idle air channel 3 can be adjusted, the flow rate of the idle air channel 3 at the position can be adjusted, and the air-fuel ratio of the transition oil system can be adjusted; in the preferred technical scheme of this embodiment, the limiting end 21, the threaded portion 22 and the adjusting end 23 are integrally formed, so that the overall stability and strength of the adjusting rod are improved.
In an optional technical scheme, the second adjusting mechanism 8 and the first adjusting mechanism 2 have the same structure and the same adjusting mode.
Claims (4)
1. A carburetor for a general gasoline engine, comprising: a body; the transition oil system comprises an idle air channel (3) arranged in the machine body, one end of the idle air channel (3) is provided with an idle air volume hole (1), the other end of the idle air channel is provided with an idle mixing ratio screw (5), and the middle part of the idle air channel is provided with an idle volume hole (4); the main oil system comprises a main air channel (7) arranged in the machine body, one end of the main air channel (7) is provided with a main air metering orifice (6), the other end of the main air channel is provided with a main spray pipe (9), and the end part of the main spray pipe (9) is provided with a main metering orifice (10); the device is characterized in that a first adjusting mechanism (2) is installed in the idle air channel (3), and the first adjusting mechanism (2) is used for adjusting the cross section size of the idle air channel (3); and a second adjusting mechanism (8) is installed in the main air channel (7), and the second adjusting mechanism (8) is used for adjusting the size of the cross section of the main air channel (7).
2. A carburetor of a general gasoline engine according to claim 1, wherein the first adjusting mechanism (2) comprises an adjusting lever, the middle portion of the adjusting lever is threaded into a threaded portion (22), the body is provided with a threaded hole for mounting the threaded portion (22), one end of the adjusting lever is a limiting end (21), and the limiting end (21) penetrates the idle air passage (3) in a sealing manner and is partially located in the idle air passage (3).
3. A carburettor for a general purpose petrol engine according to claim 2, characterised in that the end of the lever remote from the idle air passage (3) is an adjustment end (23), the adjustment end (23) being located outside the engine block and being adapted to bring about the rotation of the entire lever.
4. A carburettor for a general purpose petrol engine according to claim 2 or 3, characterised in that the limiting end (21) and the threaded portion (22) and the adjustment end (23) are integrally formed with each other.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021454882.6U CN212583838U (en) | 2020-07-22 | 2020-07-22 | Universal gasoline engine carburetor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021454882.6U CN212583838U (en) | 2020-07-22 | 2020-07-22 | Universal gasoline engine carburetor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN212583838U true CN212583838U (en) | 2021-02-23 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202021454882.6U Active CN212583838U (en) | 2020-07-22 | 2020-07-22 | Universal gasoline engine carburetor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN212583838U (en) |
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2020
- 2020-07-22 CN CN202021454882.6U patent/CN212583838U/en active Active
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