CN217950546U

CN217950546U - Small engine electric spray carburetor

Info

Publication number: CN217950546U
Application number: CN202222152522.6U
Authority: CN
Inventors: 程学明; 王成; 许明坤
Original assignee: Zhejiang Yinlong Vehicle Parts Co ltd
Current assignee: Zhejiang Yinlong Vehicle Parts Co ltd
Priority date: 2022-08-16
Filing date: 2022-08-16
Publication date: 2022-12-02
Anticipated expiration: 2032-08-16

Abstract

The utility model discloses a small-size engine electricity spouts carburetor, including the carburetor body, the choke has on the carburetor body, set up in the choke and have the wind door, the air door axle has on the air door, still including the ECU the control unit who is used for control, be provided with atmospheric pressure sensing in the choke, the last oil atomizer that has inserted to one side of carburetor body, the export setting of this oil atomizer is at the exit end of choke, contained angle control is between 40-50 between the axis of oil atomizer and the axis of choke, the wind door axle is connected by the step motor transmission, it still disposes angle sensor to correspond the wind door axle, angle sensor, atmospheric pressure sensing, the oil atomizer is connected with ECU the control unit respectively. Therefore, the technical effects of reliable structure and accurate oil injection control are achieved.

Description

Small engine electric spraying carburetor

Technical Field

The utility model relates to an electricity spouts carburetor, concretely relates to small-size engine electricity spouts carburetor.

Background

The carburetor of small engines such as lawn mower, motorcycle and the like is generally common carburetor, the working principle of the common carburetor is to suck the air-fuel mixture into the engine through negative pressure in the air intake process, the fuel injection quantity of the small engines cannot be accurately controlled in the use process, so that the mixed concentration of air and fuel cannot be controlled near the theoretical air-fuel ratio, the structure is difficult to start in places with large fuel consumption and high altitude, the discharged tail gas cannot meet the American epa3 emission standard, and the large use cost is brought to users along with the increase of the fuel price, so the common carburetor is gradually replaced by the common carburetor.

The common electronic injection carburetor comprises a main carburetor body and an oil injector, wherein the oil injector replaces the oil injection mode of a common carburetor, the oil injector needs to be controlled by an ECU (electronic control Unit), the oil injection angle of the oil injector and the outlet position of a throat pipe on the carburetor body are randomly arranged, and the oil injector cannot be fully mixed with air until the combustion is insufficient, so that the tail gas emission cannot reach the environmental protection standard.

SUMMERY OF THE UTILITY MODEL

To prior art not enough, the utility model aims to provide a reliable and accurate small-size engine electricity of fuel injection control of structure spouts carburetor to reduce oil consumption.

In order to achieve the above purpose, the utility model provides a following technical scheme: an electronic injection carburetor of a small engine comprises a carburetor body, wherein a throat pipe is arranged on the carburetor body, an air door is arranged in the throat pipe, an air door shaft is arranged on the air door, an ECU control unit used for control is further included, air pressure sensing is arranged in the throat pipe, an oil sprayer is obliquely inserted into the carburetor body, an outlet of the oil sprayer is arranged at an outlet end of the throat pipe, an included angle between a central axis of the oil sprayer and a central axis of the throat pipe is controlled to be 40-50 degrees, the air door shaft is in transmission connection through a stepping motor, an angle sensor is further configured corresponding to the air door shaft, and the angle sensor, the air pressure sensing, the oil sprayer and the stepping motor are respectively connected with the ECU control unit.

ECU the control unit includes the circuit board, the gag lever post is disposed to the one end of air door shaft, be equipped with the confession on the circuit board the arc wall that the gag lever post passed, install the shifting block on step motor's the output shaft, be equipped with curved groove of dialling on the shifting block, the gag lever post sets up in this group groove, angle sensor installs on this circuit board, angle sensor is close to the gag lever post.

The radian of the arc-shaped groove is 90 degrees.

And a return torsion spring is arranged at the upper end of the air door shaft.

The upper end of the air valve shaft is provided with a limiting disc, the limiting disc is provided with an adjusting plate, the carburetor body is screwed with an adjusting screw, and the end part of the adjusting screw abuts against the adjusting plate.

The utility model has the advantages that: the stepping motor, the angle sensor and the air pressure sensor control the fuel injection quantity and the throttle opening of the fuel injector through the calculation of the CEU control unit, so that the mixed concentration of air and fuel is controlled in a theoretical air-fuel ratio range, the fuel consumption is greatly saved, and meanwhile, an included angle between the central axis of the fuel injector and the central axis of the throat is controlled to be 40-50 degrees, so that the injected fuel and the air form a state of being fully mixed, the mixed gas is more fully combusted in an engine, the emission of pollutants in waste gas is reduced, and the technical effects of reliable structure and accurate fuel injection quantity control are realized.

The present invention will be further described with reference to the accompanying drawings and detailed description.

Drawings

FIG. 1 is a front view of an embodiment of the present invention;

FIG. 2 is a perspective view of an embodiment of the present invention;

FIG. 3 is a perspective view of the internal structure of an embodiment of the present invention, FIG. 1;

fig. 4 is a perspective view 2 showing an internal structure of the embodiment of the present invention.

Detailed Description

The present invention is described in detail below with reference to the following examples, which are only used for further illustration of the present invention, and should not be construed as limiting the scope of the present invention.

As shown in fig. 1-4, the present embodiment discloses an electronic fuel injection carburetor for a small engine, which includes a carburetor body 1, wherein the carburetor body 1 is provided with a throat 2, a throttle 3 is arranged in the throat 2, the throttle 3 is provided with a throttle shaft 31, and an ECU control unit for control, an air pressure sensor 7 is arranged in the throat 2, an oil injector 4 is obliquely inserted into the carburetor body 1, an outlet of the oil injector 4 is arranged at an outlet end of the throat 2, an outlet of the oil injector 4 is arranged below the outlet end of the throat 2, an included angle between a central axis of the oil injector 4 and a central axis of the throat 2 is controlled to be 40-50 degrees, preferably 45 degrees, the throttle shaft 31 is in transmission connection with a stepper motor 5, an angle sensor 6 is arranged corresponding to the throttle shaft 31, and the stepper motor 5, the angle sensor 6, the air pressure sensor 7, and the oil injector 4 are respectively connected with the ECU control unit.

ECU the control unit includes circuit board 9, and the one end of throttle shaft 31 disposes gag lever post 32, is equipped with the arc wall 91 that supplies gag lever post 32 to pass on the circuit board 9, installs shifting block 8 on step motor 5's the output shaft, is equipped with curved groove 81 of dialling on the shifting block 8, and gag lever post 32 sets up in this groove 81 of dialling, and angle sensor 6 installs on this circuit board 9, and angle sensor 6 is close to gag lever post 32, and the radian of arc wall 91 is about 90.

A return torsion spring 10 is disposed at the upper end of the damper shaft 31. Therefore, the rotation of the air door shaft 31 is not easy to shake, and a more stable effect is achieved.

The upper end of the air door shaft 31 is provided with a limiting disc 20, the support leg of the return spring 10 is connected to the limiting disc 20, the limiting disc 20 is provided with an adjusting plate 201, the carburetor body is screwed with an adjusting screw 30, and the end part of the adjusting screw 30 abuts against the adjusting plate 201, so that the initial position of the air door shaft can be adjusted, and the opening range of the air door can be controlled more accurately and reliably.

By adopting the technical scheme, the angle sensor 6 and the air pressure sensor 7 calculate and control the fuel injection quantity and the air door opening of the fuel injector 4 through the CEU control unit, so that the mixed concentration of air and fuel is controlled in a theoretical air-fuel ratio range, the fuel consumption is greatly saved, and meanwhile, the included angle between the central axis of the fuel injector 4 and the central axis of the throat pipe 2 is controlled between 40 degrees and 50 degrees, so that the sprayed fuel and air form a state of being fully mixed along with the situation, the mixed gas is more fully combusted in an engine, the emission of pollutants in waste gas is reduced, the technical effects of reliable structure and accurate fuel injection quantity control are realized, and the emitted tail gas can reach the American epa3 emission standard.

Claims

1. An electronic injection carburetor of a small engine comprises a carburetor body, wherein a throat pipe is arranged on the carburetor body, an air door is arranged in the throat pipe, an air door shaft is arranged on the air door, and the electronic injection carburetor also comprises an ECU control unit for control, and is characterized in that: the carburetor is characterized in that an air pressure sensor is arranged in the throat pipe, an oil sprayer is obliquely inserted into the carburetor body, an outlet of the oil sprayer is arranged at an outlet end of the throat pipe, an included angle between a central axis of the oil sprayer and a central axis of the throat pipe is controlled to be 40-50 degrees, the air door shaft is in transmission connection with a stepping motor and is provided with an angle sensor corresponding to the air door shaft, and the angle sensor, the air pressure sensor, the oil sprayer and the stepping motor are respectively connected with an ECU control unit.

2. A small engine electronic fuel injection carburetor according to claim 1, characterized in that: ECU the control unit includes the circuit board, the gag lever post is disposed to the one end of air door shaft, be equipped with the confession on the circuit board the arc wall that the gag lever post passed, install the shifting block on step motor's the output shaft, be equipped with curved groove of dialling on the shifting block, the gag lever post sets up in this group groove, angle sensor installs on this circuit board, angle sensor is close to the gag lever post.

3. A small engine electronic fuel injection carburetor according to claim 2, characterized in that: the radian of the arc-shaped groove is 90 degrees.

4. An electronic fuel injection carburettor for a small engine according to claim 1 or claim 2 wherein: and a return torsion spring is arranged at the upper end of the air door shaft.

5. An electronic fuel injection carburettor for a small engine according to claim 1 or claim 2 wherein: the upper end of the air valve shaft is provided with a limiting disc, the limiting disc is provided with an adjusting plate, the carburetor body is screwed with an adjusting screw, and the end part of the adjusting screw abuts against the adjusting plate.