CN114278468A

CN114278468A - Noise reduction desorption system and vehicle

Info

Publication number: CN114278468A
Application number: CN202111539987.0A
Authority: CN
Inventors: 常菁菁; 田乐; 王琰; 马信; 陈燕林
Original assignee: Dongfeng Motor Group Co Ltd
Current assignee: Dongfeng Motor Group Co Ltd
Priority date: 2021-12-15
Filing date: 2021-12-15
Publication date: 2022-04-05

Abstract

The invention relates to a noise reduction desorption system and a vehicle, comprising: a fuel tank; a canister in communication with the fuel tank; the noise reduction control valve comprises a shell, wherein the shell is provided with an air inlet, the air inlet is communicated with the carbon tank, a cavity is arranged in the shell close to the air inlet, the size of the cross section area of the cavity is larger than that of the cross section area of the air inlet, and the shell is also provided with an air outlet; and one end of the desorption valve is communicated with the air outlet, the other end of the desorption valve is communicated with the engine, and the desorption valve is used for controlling the fuel steam amount entering the engine. Because the cavity is arranged in the shell of the noise reduction control valve, after fuel steam entering from the air inlet enters the cavity with larger space, the cavity can convert pulse airflow in a pipeline into stable airflow and can attenuate or block sound transmission, therefore, the fuel steam entering the noise reduction control valve can hardly generate airflow pulse noise, and further idle noise can not be caused.

Description

Noise reduction desorption system and vehicle

Technical Field

The invention relates to the technical field of vehicles, in particular to a noise reduction desorption system and a vehicle.

Background

With the occurrence of environmental pollution problems, the requirements for automobile emission at home and abroad are increasingly strict. The control requirement of the national six-stage regulation on fuel evaporative emission is improved by at least 80 percent compared with the national five-stage regulation.

In the related art, fuel in a fuel tank of an automobile can volatilize into fuel vapor, and in order to prevent the fuel vapor of the automobile from being discharged into the atmosphere, a desorption device is generally arranged on the automobile and used for introducing the fuel vapor into a cylinder of an engine for combustion, so that the fuel vapor is prevented from volatilizing into the atmosphere to cause fuel waste and environmental pollution.

However, as the desorption flow of the six-country vehicle type is increased, the airflow impulse noise generated when the desorption device works is increased, and the airflow impulse noise is transmitted to the vehicle body metal plate through the pipeline and then transmitted to the cockpit to cause idle speed noise.

Therefore, there is a need to design a new noise reduction desorption system to overcome the above problems.

Disclosure of Invention

The embodiment of the invention provides a noise reduction desorption system and a vehicle, and aims to solve the problem that idling noise is easily caused when a desorption device works in the related technology.

In a first aspect, a noise reduction desorption system is provided, which includes: a fuel tank; a canister in communication with the fuel tank; the noise reduction control valve comprises a shell, wherein the shell is provided with an air inlet, the air inlet is communicated with the carbon tank, a cavity is arranged in the shell close to the air inlet, the size of the cross section area of the cavity is larger than that of the cross section area of the air inlet, and the shell is also provided with an air outlet; and one end of the desorption valve is communicated with the air outlet, the other end of the desorption valve is communicated with the engine, and the desorption valve is used for controlling the fuel steam amount entering the engine.

In some embodiments, the desorption valve comprises first and second generally parallel bodies, the first body having a first port communicating with the air outlet, the second body having a second port communicating with an intake manifold of the engine; the desorption valve further comprises a first one-way valve arranged between the first main body and the second main body, and when the engine is in a low-load operation state, the first one-way valve is opened to enable the first port to be communicated with the second port.

In some embodiments, the noise reduction desorption system further comprises a supercharger in communication with an intake manifold of the engine; the desorption valve further comprises a second one-way valve arranged between the first main body and the second main body, the second one-way valve and the first one-way valve are arranged in parallel, a third port is arranged at one end, far away from the second port, of the second main body, and the third port is communicated with the supercharger; when the engine is in a high-load running state, the supercharger drives the first port to generate negative pressure, and the second one-way valve is opened, so that the first port is communicated with the third port.

In some embodiments, the second body further comprises a third check valve between the second port and the third port, and the supercharger charges the second body with compressed air and flows to the third port through the third check valve to generate negative pressure at the first port when the engine is in a high-load operating state.

In some embodiments, the second body has a passage therein for air to flow through, the passage having an inner diameter gradually decreasing from a connection with the second one-way valve toward a direction near the third port.

In some embodiments, the noise reduction desorption system further comprises a mounting bracket fixed to the engine, the mounting bracket is provided with an insertion plate, the plate surface of the insertion plate is parallel to an intake manifold of the engine, and the insertion plate extends obliquely from the connection position of the insertion plate and the mounting bracket along the height direction of the engine; the shell is provided with a slot, and the slot is inserted into the inserting plate.

In some embodiments, the mounting bracket comprises: the engine cover comprises at least two first plates, a first cover and a second cover, wherein the two first plates are arranged in parallel at intervals, and one ends of the first plates are fixed on the cover of the engine; and a second plate connecting the two first plates, the second plate being fixed to an intake manifold of the engine; the picture peg set firmly in the second board, just the picture peg is located two between the first board, the face of picture peg with the face of first board forms predetermines the contained angle, makes the casing clamp locate first board with between the picture peg.

In some embodiments, the first plate extends obliquely from the connection with the cover toward the direction close to the second plate, so that a concave space is formed between the first plate and the second plate; a wiring harness plug-in connector is further inserted into one side, close to the first plate, of the shell, and the wiring harness plug-in connector is located in the concave space.

In some embodiments, the desorption valve has a first port which communicates with the gas outlet through a first pipe, and the first pipe is Z-shaped or linear; the wiring harness plug is clamped between the first pipeline and the first plate.

In a second aspect, a vehicle is provided that includes the noise reduction desorption system described above.

The technical scheme provided by the invention has the beneficial effects that:

the embodiment of the invention provides a noise reduction desorption system and a vehicle, wherein a cavity is arranged in a shell of a noise reduction control valve, and the size of the cross section area of the cavity is larger than that of an air inlet on the shell, so that after fuel steam entering from the air inlet enters the cavity with a larger space, the cavity can convert pulse airflow in a pipeline into stable airflow and can attenuate or block sound transmission, therefore, the fuel steam entering the noise reduction control valve can hardly generate airflow pulse noise, and further idle speed noise can not be caused.

Drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed to be used in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.

Fig. 1 is a schematic view of a noise reduction desorption system according to an embodiment of the present invention;

fig. 2 is a schematic structural diagram of a noise reduction desorption system according to an embodiment of the present invention;

fig. 3 is a schematic structural diagram of another view angle of the noise reduction desorption system according to the embodiment of the present invention.

In the figure:

1. a fuel tank; 2. a carbon tank; 21. an ash filter;

3. a noise reduction control valve; 31. a housing; 311. an air inlet; 312. a cavity; 313. an air outlet; 314. a slot; 32. a fuel vapor pipe; 33. a first conduit;

4. a desorption valve; 41. a first body; 42. a second body; 43. a first port; 44. a second port; 45. a third port; 46. a first check valve; 47. a second one-way valve; 48. a third check valve; 49. a second conduit;

5. an engine; 51. an intake manifold; 52. a cover; 6. a supercharger;

7. an air cleaner; 71. an air tube; 72. an intercooler; 73. a throttle valve;

8. mounting a bracket; 81. inserting plates; 82. a first plate; 83. a second plate; 84. a recessed space; 9. wiring harness plug.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, 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 some, but not all, embodiments of the present invention. All other embodiments, which can be obtained by a person skilled in the art without any inventive step based on the embodiments of the present invention, are within the scope of the present invention.

The embodiment of the invention provides a noise reduction desorption system and a vehicle, which can solve the problem that idle speed noise is easily caused when a desorption device works in the related technology.

Referring to fig. 1 and 2, a noise reduction desorption system provided for an embodiment of the present invention may include: the fuel tank comprises a fuel tank 1, wherein fuel oil is stored in the fuel tank 1 and can be volatilized to form fuel oil steam, and a fuel tank pressure sensor can be further arranged on the fuel tank 1; the carbon tank 2 can be communicated with the fuel tank 1, the carbon tank 2 can be further connected with an ash filter 21, activated carbon particles are arranged in the carbon tank 2, and the activated carbon particles can adsorb and store fuel steam volatilized from the fuel tank 1; a noise reduction control valve 3, which may include a housing 31, the housing 31 may have a hollow structure, and other components of the noise reduction control valve 3 may be disposed in the housing 31, the housing 31 is provided with an air inlet 311, the air inlet 311 is communicated with the canister 2, wherein the air inlet 311 may be communicated with the canister 2 through a fuel vapor pipe 32, so that fuel vapor in the canister 2 may enter the fuel vapor pipe 32, further reach the air inlet 311 through the fuel vapor pipe 32, and enter the housing 31 through the air inlet 311, a cavity 312 may be disposed in the housing 31 near the air inlet 311, the size of the cross-sectional area of the cavity 312 may be larger than that of the air inlet 311, wherein the cavity 312 may be a sphere, a cylinder, a square, or other regular or irregular shape, the cross-sectional dimension of the cavity 312 is larger than that of the air inlet 311, so that the cavity 312 forms an expansion cavity, wherein the cavity 312 can be a single expansion silencer, and after fuel steam enters the cavity 312 from the air inlet 311, the cavity 312 can convert pulse airflow in a pipeline into stable airflow, so that the function of attenuating or blocking sound transmission is achieved, and the problem of idle noise of the noise reduction control valve 3 is solved; the housing 31 may further be provided with an air outlet 313, and the air outlet 313 may be arranged at one end far away from the air inlet 311; and the desorption valve 4 is used for controlling the amount of fuel steam entering the engine 5, namely, the fuel steam coming out of the gas outlet 313 can pass through the desorption valve 4 and then enter the engine 5, and the amount of the fuel steam entering the engine 5 is controlled by setting the desorption valve 4 so as to adapt to different working states of the engine 5.

Further, the applicant finds that when the canister control valve works, a certain opening and closing frequency of the canister control valve can cause pulse airflow to be generated in the fuel steam pipe 32 and impact the pipe wall, so that airflow pulse noise is formed, and when the expansion cavity is arranged between the canister 2 and the canister control valve, two sections of pipelines need to be arranged between the canister 2 and the canister control valve, the pipelines and the expansion cavity can occupy the space around the canister 2, and the expansion cavity generally occupies a large space, so that the difficulty in arranging fuel pipelines in a cabin is large; in this embodiment, fall and set up the expansion chamber in the control valve 3 of making an uproar, carbon tank 2 with fall make an uproar and set up a fuel steam pipe 32 between the control valve 3 and connect can, need not set up the expansion chamber alone, and reduced the quantity of pipeline, make it reduces to fall the part quantity of desorption system of making an uproar, practices thrift cabin inner space, because the reduction of part and pipeline quantity, can reduce cost, can promote the cabin aesthetic property simultaneously. And moreover, the arrangement of pipelines is reduced, the number of connecting joints can be reduced, the risk of fuel steam leakage is reduced, the evaporation emission of the whole vehicle is facilitated, and the cost reduction and efficiency improvement result is achieved.

In the embodiment of the present invention, the noise reduction control valve 3 further includes a movable iron core, a fixed iron core, a spring, a valve port, and other components disposed in the housing 31, so as to control the fuel vapor desorption process.

Referring to fig. 2 and 3, in some alternative embodiments, the desorption valve 4 may include a first body 41 and a second body 42 which are substantially parallel, wherein both the first body 41 and the second body 42 may be of a pipe structure, that is, the first body 41 and the second body 42 may be in communication with fuel vapor, the first body 41 may have a first port 43, the first port 43 is communicated with the air outlet 313, in this embodiment, the first port 43 may be communicated with the air outlet 313 through a fuel vapor pipe 32, the second body 42 has a second port 44, the second port 44 may be communicated with an intake manifold 51 of the engine 5 through a second pipe 49, so that fuel vapor entering the first body 41 may enter the second body 42 and enter the intake manifold 51 through the second port 44, and further into the engine 5; the desorption valve 4 may further include a first check valve 46 disposed between the first body 41 and the second body 42, when the engine 5 is in operation, fuel vapor may be desorbed from the carbon canister 2 and enter the engine 5 for combustion, wherein when the engine 5 is in a low-load operation state, negative pressure is present in the intake manifold 51, so that a pressure difference is generated between the carbon canister 2 and the intake manifold 51, the fuel vapor sequentially passes through the carbon canister 2 and the noise reduction control valve 3 and enters the first port 43, and the first check valve 46 is opened, so that the first port 43 is communicated with the second port 44, and the fuel vapor sequentially passes through the first check valve 46 and the second port 44 and enters the intake manifold 51, and finally enters the engine 5 for combustion; by providing the first check valve 46, not only the first body 41 and the second body 42 are communicated, but also the first check valve 46 can control the flow direction of the fuel vapor so that the fuel vapor flows from the first body 41 to the second body 42 but cannot flow from the second body 42 to the first body 41 through the first check valve 46, and at the same time, the amount of the fuel vapor entering the engine 5 can be controlled by controlling the opening size and the opening/closing time of the first check valve 46; the opening and closing of the first check valve 46 can be automatically controlled by sensing the load operation state of the engine 5.

Referring to fig. 1 and 2, in some embodiments, the noise reduction desorption system may further include a supercharger 6, one end of the supercharger 6 may be in communication with the intake manifold 51 of the engine 5, and the other end of the supercharger 6 may be connected to the air filter 7 through an air pipe 71 and then in communication with the outside air, so that air may enter the supercharger 6 through the air filter 7 and the air pipe 71, and the supercharger 6 may compress the air to increase the density of the air; the desorption valve 4 may further include a second check valve 47 disposed between the first body 41 and the second body 42, the second check valve 47 may be disposed in parallel with the first check valve 46, an end of the second body 42 away from the second port 44 is provided with a third port 45, and the third port 45 is communicated with the supercharger 6, so that air in the supercharger 6 may enter the second body 42 from the third port 45; when the engine 5 is in a high-load operation state, the supercharger 6 is involved in operation, positive pressure is provided in the intake manifold 51, the supercharger 6 can drive the first port 43 to generate negative pressure, and the second check valve 47 is opened, so that the first port 43 is communicated with the third port 45, that is, the supercharger 6 can charge compressed air into the second body 42 to form a positive pressure driving line, so that negative pressure is generated at the first port 43, and further fuel vapor in the carbon canister 2 is driven to flow to the first port 43, and enters the first body 41 from the first port 43, and then enters the second body 42 through the second check valve 47, and fuel vapor entering the second body 42 can enter the supercharger 6 through the third port 45, and further enters the engine 5 from the supercharger 6 together with air, intake combustion of the engine 5 in a high-pressure load operating state is achieved. In this embodiment, the first port 43 may be automatically driven to generate negative pressure through the intervention of the supercharger 6, so as to realize air intake of the engine 5 in a high-pressure load operation state.

Further, as shown in fig. 1, an intercooler 72 and a throttle 73 may be sequentially disposed on a communication pipeline between the supercharger 6 and the intake manifold 51, compressed air in the supercharger 6 may enter the third port 45 after passing through the intercooler 72 and the throttle 73, and the intercooler 72 is configured to reduce a temperature of the supercharged high-temperature air to reduce a heat load of the engine 5, increase an intake air amount, and further increase power of the engine 5; the throttle valve 73 is a controllable valve that controls air intake into the engine 5.

Referring to fig. 1 and 2, in some alternative embodiments, the second body 42 may further be provided with a third check valve 48, the third check valve 48 is located between the second port 44 and the third port 45, that is, the opening and closing of the third check valve 48 are controlled, so that the air entering the second port 44 can be controlled to flow to the third port 45, when the engine 5 is in a high-load operation state, the supercharger 6 charges the compressed air into the second body 42 through the second port 44 and flows to the third port 45 through the third check valve 48, so that a negative pressure is generated at the first port 43, the fuel vapor is desorbed through a high-load desorption line, flows from the first port 43 to the third port 45 through the second check valve 47, then flows into a pre-pressurized air pipe 71, and enters the supercharger 6 together with the air filtered by the air filter 7, The intercooler 72, the throttle valve 73, the intake manifold 51, and finally the engine 5. By providing the third check valve 48, the opening and closing of the third check valve 48 can be controlled according to the load operation state of the engine 5, so that the second port 44 communicates with the third port 45; in this application, through with first check valve 46 second check valve 47 with third check valve 48 set up in first main part 41 with inside the second main part 42, reduced the use of pipeline, further reduce the quantity of part, reduce the complexity that the pipeline was walked the line, and then reduce and arrange the degree of difficulty.

Referring to fig. 1, in some embodiments, the second body 42 may have a passage for air to flow through, and an inner diameter of the passage may gradually decrease from a connection point with the second check valve 47 to a position close to the third port 45, that is, the inner diameter of the passage is the largest at the connection point with the second check valve 47, and then the inner diameter decreases, and the whole of the first body and the second body may form a venturi valve structure, and when compressed air passes through a reduced flow cross section, a flow rate of the compressed air increases, and a negative pressure is generated at the first port 43 under the driving of a venturi effect. In this embodiment, under the effect of second check valve 47, third check valve 48 and venturi effect for the positive pressure desorption process under the high load work of engine 5 is more abundant thorough, has improved the desorption efficiency of fuel steam in carbon tank 2, makes more fuel steam finally carry out engine 5 and burns, avoids fuel steam to discharge in the environment.

Referring to fig. 2 and 3, in some embodiments, the noise reduction desorption system may further include a mounting bracket 8 fixed to the engine 5, the mounting bracket 8 may be provided with an insert plate 81, a plate surface of the insert plate 81 is parallel to the intake manifold 51 of the engine 5, in this embodiment, the intake manifold 51 extends along the left and right directions of the engine 5, a plate surface of the insert plate 81 also extends along the left and right directions, the insert plate 81 extends obliquely along the height direction of the engine 5 from the connection with the mounting bracket 8, that is, the insert plate 81 may not be vertically disposed, the insert plate 81 may extend obliquely upward and forward from the connection with the mounting bracket 8 or obliquely upward and rearward from the connection with the mounting bracket 8, the housing 31 may be provided with a slot 314, and the slot 314 is inserted in the insert plate 81, the case 31 is fixed to the mounting bracket 8, and the plate surface of the insert plate 81 is arranged in a direction substantially perpendicular to the vibration direction of the engine 5 because the engine 5 vibrates in the front-rear direction during operation, so that the case 31 and the insert plate 81 have a large contact area in the front-rear direction to receive the force generated by the vibration of the engine 5, the risk of damage to the insert plate 81 is reduced, and the probability of the case 31 falling off from the insert plate 81 is reduced; moreover, the insert plate 81 extending obliquely can not only bear the force in the front-rear direction, but also have a certain blocking effect on the insert groove 314 in the up-down direction, so that the insert groove 314 is prevented from moving upward and being separated from the insert plate 81.

Referring to fig. 2 and 3, in some embodiments, the mounting bracket 8 may include: at least two first plates 82, the two first plates 82 are arranged in parallel at intervals, and one end of each first plate 82 is fixed to the head cover 52 of the engine 5, in this embodiment, the upper end of each first plate 82 is fixed to the head cover 52 of the engine 5 through bolts; and a second plate 83, the second plate 83 connecting the two first plates 82, the second plate 83 being substantially perpendicular to the first plates 82 such that the two first plates 82 and the second plate 83 form a U-shaped structure, the second plate 83 being fixable to the intake manifold 51 of the engine 5, wherein the second plate 83 is fixable to the intake manifold 51 by bolts; the picture peg 81 sets firmly in the second board 83, just the picture peg 81 is located two between the first board 82, promptly the picture peg 81 is located roughly the middle part of second board 83, the face of picture peg 81 with the face of first board 82 forms and predetermines the contained angle, wherein, the face of picture peg 81 with can be acute angle, right angle or obtuse angle between the face of first board 82, make the casing 31 press from both sides and locate first board 82 with between the picture peg 81, first board 82 can be right the casing 31 carries out spacingly, prevents the casing 31 is excessive displacement in front and back direction.

Referring to fig. 2 and 3, further, the first plate 82 may extend obliquely from the connection with the cover 52 to a direction close to the second plate 83, and the first plate 82 and the second plate 83 are connected by an arc, so that a concave space 84 is formed between the first plate 82 and the second plate 83, in this embodiment, the concave space 84 is located between the cover 52 and the intake manifold 51; the casing 31 is close to one side of first board 82 can also be inserted and is equipped with pencil bayonet joint 9, pencil bayonet joint 9 is inserted and is located casing 31, pencil bayonet joint 9 is used for the power supply of control valve 3 that makes an uproar falls, just pencil bayonet joint 9 is located in sunken space 84, will pencil bayonet joint 9 set up in sunken space 84, simultaneously, casing 31 also is located this sunken space 84, make full use of the gap between housing 52 and the air intake manifold 51, pencil bayonet joint 9 need not occupy again housing 52 or the space around the air intake manifold 51, saves the space in the cabin, has improved space utilization.

Referring to fig. 2 and 3, in some alternative embodiments, the desorption valve 4 may have a first port 43, the first port 43 is communicated with the gas outlet 313 through a first pipe 33, the first pipe 33 is Z-shaped or linear, that is, one end of the first pipe 33 is connected with the first port 43, and the other end of the first pipe 33 is connected with the gas outlet 313; the harness plug 9 may be clamped between the first pipe 33 and the first plate 82, a gap may be formed between the first pipe 33 and the first plate 82, the harness plug 9 is disposed in the gap, so that the space is saved, the harness plug 9 is prevented from blocking the surrounding pipes, and when the first body 41 is disposed below the second body 42, the height of the first body 41 and the height of the air outlet 313 may be set to be substantially the same, so that the first pipe 33 may extend to the first port 43 along a straight line, a bend angle from the air outlet 313 to the first port 43 is reduced, and fuel vapor may more smoothly flow into the first body 41; when first main part 41 set up in second main part 42 below or during the fore-and-aft direction, can with first pipeline 33 sets up to crooked Z type, just first port 43 with certain difference in height has between the gas outlet 313, so sets up, makes first pipeline 33 has certain flexible deformation space, works as vibration drive around engine 5 when casing 31 moves together, first pipeline 33 can follow casing 31's removal and take place deformation, and when in reasonable vibration range, first pipeline 33 can not drive first main part 41 removes, can not lead to the fact the influence to desorption valve 4.

The embodiment of the invention also provides a vehicle, which can comprise the noise reduction desorption system provided in any one of the embodiments, and details are not repeated herein.

The principle of the noise reduction desorption system and the vehicle provided by the embodiment of the invention is as follows:

because the cavity 312 is arranged in the shell 31 of the noise reduction control valve 3, and the cross-sectional area of the cavity 312 is larger than that of the air inlet 311 on the shell 31, after fuel steam entering from the air inlet 311 enters the expanded cavity 312 with a larger space, the space for fuel steam to circulate is suddenly enlarged, the cavity 312 can convert pulse airflow in a pipeline into stable airflow, so that sound transmission can be attenuated or blocked, the fuel steam entering the noise reduction control valve 3 hardly generates airflow pulse noise, and the airflow pulse noise is not transmitted to a vehicle body metal plate through the pipeline, so that idle noise is caused; the control valve 3 of making an uproar falls with the combination of desorption valve 4 is used and the integrated design, can reduce fuel evaporation control system's cost to simplify fuel evaporation control system's structure by a wide margin, be favorable to the cabin whole to be arranged, improve the cabin and beautifully spend, in the aspect of the cost, reduce fuel evaporation control system cost by a wide margin, in the aspect of the benefit, make fuel steam desorption efficiency improve in the carbon tank 2, make full use of the fuel steam that fuel tank 1 volatilizees, and solved the problem of carbon tank control valve idle speed noise, reached the target of cost reduction increase.

In the description of the present invention, it should be noted that the terms "upper", "lower", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, which are merely for convenience in describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed in a specific orientation, and operate, and thus, should not be construed as limiting the present invention. Unless expressly stated or limited otherwise, the terms "mounted," "connected," and "connected" are intended to be inclusive and mean, for example, that they may be fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.

It is to be noted that, in the present invention, relational terms such as "first" and "second", and the like, are used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other identical elements in a process, method, article, or apparatus that comprises the element.

The foregoing are merely exemplary embodiments of the present invention, which enable those skilled in the art to understand or practice the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A denoised desorption system characterised in that it comprises:

a fuel tank (1);

a canister (2) communicating with the fuel tank (1);

the noise reduction control valve (3) comprises a shell (31), wherein the shell (31) is provided with an air inlet (311), the air inlet (311) is communicated with the carbon tank (2), a cavity (312) is arranged in the shell (31) and close to the air inlet (311), the size of the cross section area of the cavity (312) is larger than that of the cross section area of the air inlet (311), and the shell (31) is also provided with an air outlet (313);

and one end of the desorption valve (4) is communicated with the air outlet (313), the other end of the desorption valve is communicated with the engine (5), and the desorption valve (4) is used for controlling the fuel steam amount entering the engine (5).

2. The noise reduction desorption system of claim 1, wherein:

the desorption valve (4) comprises a first body (41) and a second body (42) which are approximately parallel, the first body (41) is provided with a first port (43), the first port (43) is communicated with the air outlet (313), the second body (42) is provided with a second port (44), and the second port (44) is communicated with an air inlet manifold (51) of the engine (5);

the desorption valve (4) further comprises a first check valve (46) arranged between the first main body (41) and the second main body (42), and when the engine (5) is in a low-load operation state, the first check valve (46) is opened to enable the first port (43) to be communicated with the second port (44).

3. The noise reduction desorption system of claim 2, wherein:

the noise reduction desorption system further comprises a supercharger (6), wherein the supercharger (6) is communicated with an air inlet manifold (51) of the engine (5);

the desorption valve (4) further comprises a second one-way valve (47) arranged between the first main body (41) and the second main body (42), the second one-way valve (47) and the first one-way valve (46) are arranged in parallel, a third port (45) is arranged at one end, far away from the second port (44), of the second main body (42), and the third port (45) is communicated with the supercharger (6);

when the engine (5) is in a high-load operation state, the supercharger (6) drives the first port (43) to generate negative pressure, and the second one-way valve (47) is opened to enable the first port (43) to be communicated with the third port (45).

4. The noise reduction desorption system of claim 3, wherein:

the second body (42) is further provided with a third check valve (48), the third check valve (48) is located between the second port (44) and the third port (45), and when the engine (5) is in a high-load operation state, the supercharger (6) charges compressed air into the second body (42) and flows to the third port (45) through the third check valve (48), so that negative pressure is generated at the first port (43).

5. The noise reduction desorption system of claim 4, wherein:

the second body (42) has a passage for air to flow through, and the inner diameter of the passage gradually decreases from the connection with the second check valve (47) toward the third port (45).

6. The noise reduction desorption system of claim 1, wherein:

the noise reduction desorption system further comprises a mounting bracket (8) fixed to the engine (5), an inserting plate (81) is arranged on the mounting bracket (8), the plate surface of the inserting plate (81) is parallel to an air inlet manifold (51) of the engine (5), and the inserting plate (81) obliquely extends from the connecting position of the inserting plate and the mounting bracket (8) along the height direction of the engine (5);

the shell (31) is provided with a slot (314), and the slot (314) is inserted into the inserting plate (81).

7. A noise reducing desorption system according to claim 6, wherein the mounting bracket (8) comprises:

at least two first plates (82), wherein the two first plates (82) are arranged in parallel at intervals, and one end of each first plate (82) is fixed on a cover (52) of the engine (5);

and a second plate (83), the second plate (83) connecting the two first plates (82), the second plate (83) being fixed to an intake manifold (51) of the engine (5);

picture peg (81) set firmly in second board (83), just picture peg (81) are located two between first board (82), the face of picture peg (81) with the face of first board (82) forms the preset contained angle, makes casing (31) press from both sides and locate first board (82) with between picture peg (81).

8. The noise reduction desorption system of claim 7, wherein:

the first plate (82) extends obliquely from the connection with the cover (52) to a direction close to the second plate (83) so that a recessed space (84) is formed between the first plate (82) and the second plate (83);

a wiring harness plug-in connector (9) is further inserted into one side, close to the first plate (82), of the shell (31), and the wiring harness plug-in connector (9) is located in the concave space (84).

9. The noise reduction desorption system of claim 8, wherein:

the desorption valve (4) is provided with a first port (43), the first port (43) is communicated with the gas outlet (313) through a first pipeline (33), and the first pipeline (33) is Z-shaped or linear;

the wiring harness plug connector (9) is clamped between the first pipeline (33) and the first plate (82).

10. A vehicle comprising the noise reduction desorption system of claim 1.