阅读说明：本技术 进气管带燃油脱附结构 (Desorption structure for fuel oil in air inlet pipe ) 是由 杨鑫 于 2018-06-29 设计创作，主要内容包括：本申请提供了一种进气管带燃油脱附结构,其包括进气管、中冷高压管、脱附管和文氏管,所述进气管的管身设有与所述进气管连通的高压油气支管；所述中冷高压管的管身设有与所述中冷高压管均连通的高压气体输出支管和低压脱附接口,所述进气管的出气端连通所述中冷高压管；所述脱附管的出气端设有与所述脱附管均连通的高压脱附支管和低压脱附支管,所述低压脱附支管接入所述低压脱附接口；所述文氏管包括介质进口、介质出口和介质吸入口,所述介质进口连通所述高压气体输出支管,所述介质出口连通所述高压油气支管,所述介质吸入口连通所述高压脱附支管。本申请能够形成燃油脱附双回路,解决增压发动机车型的燃油脱附问题。(The application provides a fuel desorption structure of an air inlet pipe, which comprises an air inlet pipe, an intercooling high-pressure pipe, a desorption pipe and a venturi, wherein a pipe body of the air inlet pipe is provided with a high-pressure oil-gas branch pipe communicated with the air inlet pipe; the pipe body of the intercooling high-pressure pipe is provided with a high-pressure gas output branch pipe and a low-pressure desorption interface which are communicated with the intercooling high-pressure pipe, and the gas outlet end of the gas inlet pipe is communicated with the intercooling high-pressure pipe; the gas outlet end of the desorption pipe is provided with a high-pressure desorption branch pipe and a low-pressure desorption branch pipe which are communicated with the desorption pipe, and the low-pressure desorption branch pipe is connected to the low-pressure desorption interface; the venturi comprises a medium inlet, a medium outlet and a medium suction inlet, the medium inlet is communicated with the high-pressure gas output branch pipe, the medium outlet is communicated with the high-pressure oil gas branch pipe, and the medium suction inlet is communicated with the high-pressure desorption branch pipe. This application can form the fuel desorption double circuit, solves the fuel desorption problem of supercharged engine motorcycle type.)

1. The utility model provides an intake pipe takes fuel desorption structure which characterized in that includes:

the pipe body of the air inlet pipe is provided with a high-pressure oil-gas branch pipe communicated with the air inlet pipe, and one end of the high-pressure oil-gas branch pipe is arranged between the air inlet end and the air outlet end of the air inlet pipe;

the pipe body of the intercooling high-pressure pipe is provided with a high-pressure gas output branch pipe and a low-pressure desorption interface which are communicated with the intercooling high-pressure pipe, and the gas outlet end of the gas inlet pipe is communicated with the intercooling high-pressure pipe;

the desorption pipe is connected with the carbon tank at the air inlet end, the high-pressure desorption branch pipe and the low-pressure desorption branch pipe which are communicated with the desorption pipe are arranged at the air outlet end, and the low-pressure desorption branch pipe is connected with the low-pressure desorption interface;

the venturi comprises a medium inlet, a medium outlet and a medium suction inlet, the medium inlet is communicated with the high-pressure gas output branch pipe, the medium outlet is communicated with the high-pressure oil gas branch pipe, and the medium suction inlet is communicated with the high-pressure desorption branch pipe.

2. The structure for desorbing the fuel oil in the air inlet pipe as claimed in claim 1, wherein a medium outlet of the venturi tube is provided with a quick-connection socket, and one end of the high-pressure oil-gas branch pipe, which is far away from the air inlet pipe, is provided with a quick-connection plug matched with the quick-connection socket.

3. The intake pipe with fuel desorption structure of claim 2, wherein the quick-connection plug and the quick-connection socket are in clamping fit.

4. The intake manifold with fuel oil desorption structure of claim 1, wherein the length of the high-pressure oil gas branch pipe is not more than 25 mm.

5. The structure for desorbing fuel at an intake pipe as claimed in claim 1, wherein the high-pressure branch oil-gas pipe is welded to the intake pipe.

6. The intake pipe with fuel desorption structure of claim 1, further comprising a connection hose, wherein the medium inlet is connected with the high-pressure gas output branch pipe through the connection hose.

7. The intake pipe with fuel desorption structure of claim 1, further comprising a high-pressure oil gas one-way valve, wherein the high-pressure oil gas one-way valve is arranged on the high-pressure desorption branch pipe.

8. The intake pipe with fuel desorption structure of claim 7, wherein the high-pressure oil gas one-way valve is an electromagnetic valve.

9. The structure for desorbing charged fuel oil from an air inlet pipe as claimed in claim 8, wherein a pressure sensor is arranged on the high-pressure desorption branch pipe, and the output end of the pressure sensor is connected to the control end of the high-pressure oil-gas check valve.

10. The intake pipe with fuel desorption structure of claim 1, further comprising a low-pressure oil gas check valve, wherein the low-pressure oil gas check valve is arranged on the low-pressure desorption branch pipe.

Technical Field

The application relates to the technical field of engines, in particular to an intake pipe with fuel desorption structure.

Background

Traditional natural suction engine adopts the single circuit to carry out the fuel desorption, adopts the desorption pipeline direct access engine intake manifold's the form of arranging to carry out the fuel desorption promptly, because intake manifold internal pressure is less than desorption pipeline pressure, produces the vacuum, forms the negative pressure return circuit, and oil gas gets into intake manifold through the negative pressure return circuit and participates in the burning.

In a supercharged engine vehicle type, due to the action of the supercharger, the pressure in the air inlet manifold is far greater than the pressure of the desorption pipeline, and a negative pressure loop cannot be formed, so that the arrangement form of a single loop cannot meet the fuel desorption requirement of the supercharged engine vehicle type.

Disclosure of Invention

The application provides an air inlet pipe area fuel desorption structure to form the fuel desorption double circuit, solve the fuel desorption problem of supercharged engine motorcycle type.

The application provides an air inlet pipe area fuel desorption structure includes:

the pipe body of the air inlet pipe is provided with a high-pressure oil-gas branch pipe communicated with the air inlet pipe, and one end of the high-pressure oil-gas branch pipe is arranged between the air inlet end and the air outlet end of the air inlet pipe;

the pipe body of the intercooling high-pressure pipe is provided with a high-pressure gas output branch pipe and a low-pressure desorption interface which are communicated with the intercooling high-pressure pipe, and the gas outlet end of the gas inlet pipe is communicated with the intercooling high-pressure pipe;

the desorption pipe is connected with the carbon tank at the air inlet end, the high-pressure desorption branch pipe and the low-pressure desorption branch pipe which are communicated with the desorption pipe are arranged at the air outlet end, and the low-pressure desorption branch pipe is connected with the low-pressure desorption interface;

the venturi comprises a medium inlet, a medium outlet and a medium suction inlet, the medium inlet is communicated with the high-pressure gas output branch pipe, the medium outlet is communicated with the high-pressure oil gas branch pipe, and the medium suction inlet is communicated with the high-pressure desorption branch pipe.

Optionally, a medium outlet of the venturi tube is provided with a quick-connection socket, and one end of the high-pressure oil-gas branch tube, which is far away from the gas inlet tube, is provided with a quick-connection plug which is matched with the quick-connection socket.

Optionally, the quick-connect plug and the quick-connect jack are in snap fit.

Optionally, the high pressure hydrocarbon branch pipe is no more than 25mm in length.

Optionally, the high-pressure oil gas branch pipe is connected to the air inlet pipe in a welding mode.

Optionally, the air inlet pipe fuel desorption structure that this application provided still includes coupling hose, the medium import passes through coupling hose connects high-pressure gas output branch pipe.

Optionally, the intake pipe area fuel desorption structure that this application provided still includes high-pressure oil gas check valve, high-pressure oil gas check valve sets up on the high pressure desorption branch pipe.

Optionally, the high-pressure oil gas one-way valve is a solenoid valve.

Optionally, a pressure sensor is arranged on the high-pressure desorption branch pipe, and an output end of the pressure sensor is connected to a control end of the high-pressure oil-gas one-way valve.

Optionally, the intake pipe area fuel desorption structure that this application provided still includes low pressure oil gas check valve, low pressure oil gas check valve sets up on the low pressure desorption branch pipe.

The technical scheme provided by the application can achieve the following beneficial effects:

the high-pressure desorption branch pipe and the low-pressure desorption branch pipe are arranged to form a fuel desorption double loop, so that the fuel desorption function of the engine under high-pressure and low-pressure conditions is realized respectively; under the condition of low pressure, the low-pressure desorption branch pipe naturally forms a negative pressure loop, and oil gas enters the engine through the negative pressure loop to participate in combustion; under the high-pressure condition, the high-pressure desorption branch pipe forms a negative pressure loop under the suction action of the venturi tube, oil gas enters the gas inlet pipe through the negative pressure loop to form oil-gas mixed gas, and enters the engine through the intercooling high-pressure pipe to participate in combustion.

It is to be understood that both the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the application.

Drawings

Fig. 1 is a schematic perspective view of a fuel desorption structure provided in an embodiment of the present application;

fig. 2 is a schematic diagram of a fuel desorption structure provided in the embodiment of the present application;

fig. 3 is a schematic structural diagram of a venturi provided in an embodiment of the present application.

Reference numerals:

1, an air inlet pipe;

11-high pressure oil gas branch pipe;

2-intercooling high pressure pipe;

21-high pressure gas output branch pipe;

22-connecting hoses;

23-low pressure desorption interface;

3-desorption tube;

31-high pressure desorption branch pipe;

311-high pressure oil gas check valve;

32-low pressure desorption branch pipe;

321-low pressure oil gas one-way valve;

4-a venturi;

41-medium inlet;

42-a media outlet;

43-media suction inlet;

5-an engine;

6-carbon tank;

7-air filter;

8-a turbocharger;

9-intercooler.

The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the present application and together with the description, serve to explain the principles of the application.

Detailed Description

The present application is described in further detail below with reference to specific embodiments and with reference to the attached drawings.

As shown in fig. 1 to 3, an embodiment of the present application provides a desorption structure for fuel carried in an intake pipe, which includes an intake pipe 1, an intercooling high-pressure pipe 2, a desorption pipe 3, and a venturi 4.

The pipe body of the air inlet pipe 1 is provided with a high-pressure oil-gas branch pipe 11, and the high-pressure oil-gas branch pipe 11 is arranged between the air inlet end and the air outlet end of the air inlet pipe 1 and communicated with the air inlet pipe 1.

The pipe body of the intercooling high-pressure pipe 2 is provided with a high-pressure gas output branch pipe 21 and a low-pressure desorption interface 23, the high-pressure gas output branch pipe 21 and the low-pressure desorption interface 23 are both communicated with the intercooling high-pressure pipe 2, the gas outlet end of the gas inlet pipe 1 is communicated with the gas inlet end of the intercooling high-pressure pipe 2, and the gas outlet end of the intercooling high-pressure pipe 2 is communicated with the gas inlet of the engine 5 directly or through an engine gas.

The gas outlet end of the desorption pipe 3 is provided with a high-pressure desorption branch pipe 31 and a low-pressure desorption branch pipe 32, and the high-pressure desorption branch pipe 31 and the low-pressure desorption branch pipe 32 are both communicated with the desorption pipe 3.

The venturi tube 4 comprises a media inlet 41, a media outlet 42 and a media suction inlet 43.

The low-pressure desorption branch pipe 32 is communicated with the low-pressure desorption port 23, when the pressure in the middle-cooling high-pressure pipe 2 (or the engine intake manifold) is smaller than the pressure in the desorption pipe 3 (for example, when the supercharger does not work), a negative pressure loop is naturally formed, the negative pressure loop sequentially comprises the desorption pipe 3, the low-pressure desorption branch pipe 32 and the middle-cooling high-pressure pipe 2 (or the engine intake manifold), and the fuel enters the engine 5 to participate in combustion, so that the fuel desorption under the low-pressure condition is realized.

The medium inlet 41 is communicated with the high-pressure gas output branch pipe 21, the medium outlet 42 is communicated with the high-pressure oil-gas branch pipe 11, the medium suction inlet 43 is communicated with the high-pressure desorption branch pipe 31, when the pressure in the intermediate-cold high-pressure pipe 2 is greater than the pressure in the desorption pipe 3 (for example, when a supercharger works), the high-pressure gas in the intermediate-cold high-pressure pipe 2 flows through the medium inlet 41 and the medium outlet 42 of the venturi pipe 4 and generates suction action at the medium suction inlet 43 to form a negative pressure loop, the negative pressure loop sequentially comprises the desorption pipe 3, the high-pressure desorption branch pipe 31, the medium suction inlet 43, the medium outlet 42, the high-pressure oil-gas branch pipe 11 and the air inlet pipe 1, the air and the air are mixed in the air inlet pipe 1 to form oil-gas mixed gas, and the oil-gas.

Specifically, an air filter 7 may be disposed at the air inlet end of the air inlet pipe 1, and the air filter 7 is communicated with the atmosphere; a turbocharger 8 and a intercooler 9 can be arranged on the intercooling high-pressure pipe 2, and high-pressure gas in the intercooling high-pressure pipe 2 is formed through the turbocharger 8 and the intercooler 9; the gas inlet end of the desorption pipe 3 is communicated with a carbon tank 6.

Furthermore, a medium outlet 42 of the venturi 4 is provided with a quick-connection socket, one end of the high-pressure oil-gas branch pipe 11, which is far away from the gas inlet pipe 1, is provided with a quick-connection plug matched with the quick-connection socket, and the medium outlet 42 is connected with the high-pressure oil-gas branch pipe 11 by matching the quick-connection socket and the quick-connection plug, so that the installation is convenient, the connection is reliable and is not easy to loosen, the sealing performance requirement is easy to achieve, and the evaporation test can be carried out on the position without inspection; on the other hand, the quick-connection socket is arranged on the venturi 4, the quick-connection plug is arranged on the high-pressure oil-gas branch pipe 11, the size of the high-pressure oil-gas branch pipe 11 can be reduced, so that the arrangement of the high-pressure oil-gas branch pipe 11 on the air inlet pipe 1 is facilitated, the interface area when the high-pressure oil-gas branch pipe 11 is arranged on the air inlet pipe 1 is reduced, and the influence on the air inlet pipe 1 is reduced.

It will be appreciated that it is also possible to locate the quick connect spigot on the high pressure branch 11 and the quick connect plug on the media outlet 42.

Furthermore, the quick-connect plug and the quick-connect socket are in clamping fit, the mutual fit positions cannot rotate relatively, the sealing effect is guaranteed, and other connection modes such as threaded connection and the like can be adopted between the quick-connect plug and the quick-connect socket.

Further, the length of the high-pressure oil-gas branch pipe 11 is not more than 25mm, and test results show that when the length of the high-pressure oil-gas branch pipe 11 exceeds 25mm, the problem of poor sealing is easy to occur, under the condition that the manufacturing process can be achieved, the shorter the length of the high-pressure oil-gas branch pipe 11 is, the more beneficial the length is, the process limitation is caused, and if the length of the high-pressure oil-gas branch pipe 11 is too short, the processing difficulty is increased, so that the length of the high-pressure oil-gas branch pipe 11 is preferably 25mm, the processing process requirement can be met, the processing and manufacturing cost is not increased, the sealing requirement can.

Further, the high-pressure oil-gas branch pipe 11 is connected to the gas inlet pipe 1 in a welding mode, and the length of the high-pressure oil-gas branch pipe 11 is favorably shortened.

Further, the intake pipe area fuel desorption structure that this application provided still includes coupling hose 22, and medium import 41 passes through coupling hose 22 and connects high-pressure gas output branch 21, can adjust the position of venturi tube 4 through setting up coupling hose 22 to make venturi tube 4 can adapt to the multiple connection distance demand between venturi tube 4 and the cold high-pressure pipe 2 in high pressure, can avoid producing the effect of dragging to the connection of medium export 42 department as far as possible simultaneously, thereby guarantee sealing connection's reliability better.

Further, a high-pressure oil-gas one-way valve 311 can be arranged on the high-pressure desorption branch pipe 31, the conducting direction of the high-pressure oil-gas one-way valve 311 is the direction from the desorption pipe 3 to the medium suction port 43, and the negative-pressure desorption loop under the high-pressure condition is controlled through the high-pressure oil-gas one-way valve 311, so that only one loop is ensured to work under the low-pressure condition, and the low-pressure desorption effect is ensured.

Further, the high-pressure oil-gas check valve 311 may be an electromagnetic valve, the operation of the electromagnetic valve is controlled by an electronic control system of the engine or an electronic control system of the automobile, and the high-pressure oil-gas check valve 311 may be automatically opened or closed by the electronic control system by setting a certain opening and closing condition (for example, when the supercharger is started, the high-pressure oil-gas check valve 311 is opened, and when the supercharger is stopped, the high-pressure oil-gas check valve 311 is closed), so that the accuracy and the sensitivity of the control of the high-pressure oil-gas check valve 311 are improved, and certainly, the high-pressure oil-gas check valve 311 may also be.

Further, a pressure sensor can be further arranged on the high-pressure desorption branch pipe 31, the output end of the pressure sensor is connected to the control end of the high-pressure oil-gas one-way valve 311, the pressure sensor is arranged to directly detect the air pressure in the high-pressure desorption branch pipe 31, and the judgment is not indirectly carried out according to whether the supercharger works, so that a more accurate control effect can be achieved.

Further, the low-pressure desorption branch pipe 32 may further be provided with a low-pressure oil-gas check valve 321, and a conducting direction of the low-pressure oil-gas check valve 321 is a direction from the desorption pipe 3 to the low-pressure desorption port 23.

It is understood that the low pressure oil gas check valve 321 may be similar to the high pressure oil gas check valve 311, that is, it may be a solenoid valve, which may be controlled by an electronic control system, and in addition, a pressure sensor may be disposed on the low pressure desorption branch pipe 32.

The above description is only a preferred embodiment of the present application and is not intended to limit the present application, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, improvement and the like made within the spirit and principle of the present application shall be included in the protection scope of the present application.