CN219472210U

CN219472210U - Desorption device and vehicle

Info

Publication number: CN219472210U
Application number: CN202320491005.3U
Authority: CN
Inventors: 李泉; 代建峰; 孙凯; 黄永举
Original assignee: Guangzhou Automobile Group Co Ltd
Current assignee: Guangzhou Automobile Group Co Ltd
Priority date: 2023-03-14
Filing date: 2023-03-14
Publication date: 2023-08-04
Anticipated expiration: 2033-03-14

Abstract

The application provides a desorption device and a vehicle. Wherein, desorption device includes: the tank body is provided with an adsorption port and a desorption port, a filter cavity is formed by surrounding the tank body, the adsorption port and the desorption port are communicated with the filter cavity, the desorption port is used for being communicated with an engine, the adsorption port is used for being communicated with a fuel tank, an adsorption carrier is arranged in the filter cavity, the adsorption carrier is used for adsorbing oil gas molecules, the tank body is also provided with a vent, and the vent is communicated with the filter cavity; a heater is disposed proximate the vent to heat gas entering the filter chamber through the vent. According to the technical scheme, on one hand, the desorption effect of carbon powder adsorbed oil gas molecules in the carbon tank can be improved, the problem of vehicle oil consumption rising caused by the fact that the carbon tank desorption amount of the hybrid vehicle is insufficient and the carbon tank is desorbed by forced starting of an engine is avoided, on the other hand, the problem of pollution to the atmosphere can be solved by desorbing oil liquid entering the liquid collecting cavity of the carbon tank, so that the oil liquid can be prevented from entering the inside of the carbon tank to cause carbon powder foaming oil to lose efficacy, and the problem of the oil gas molecules dissipation to the atmosphere is solved.

Description

Desorption device and vehicle

Technical Field

The application relates to the technical field of vehicles, in particular to a desorption device and a vehicle.

Background

In order to reduce the pollution of vehicles to air, carbon tanks are currently provided in vehicles to filter the oil and gas molecules escaping from the tank. And desorbing the oil gas molecules adsorbed by the carbon powder in the carbon tank through the engine. But the current desorption mode efficiency is lower, is difficult to desorb the oil gas molecules in the carbon tank when the desorption operation is carried out, and the oil gas molecules in the carbon tank escape, so that the atmosphere is easy to be polluted.

Disclosure of Invention

An object of the application is to provide a desorption device and vehicle, can improve the desorption effect of hydrocarbon molecules in the carbon tank, reduce the condition that hydrocarbon molecules loss to the atmosphere, reduce the problem of polluting the atmosphere.

According to one aspect of the present application, there is provided a desorption apparatus for use in a vehicle, the desorption apparatus comprising:

the tank body is provided with an adsorption port and a desorption port, a filter cavity is formed by surrounding the tank body, the adsorption port and the desorption port are communicated with the filter cavity, the desorption port is used for being communicated with an engine, the adsorption port is used for being communicated with a fuel tank, an adsorption carrier is arranged in the filter cavity, the adsorption carrier is used for adsorbing oil gas molecules, and a vent is further arranged in the tank body and is communicated with the filter cavity;

and a heater disposed proximate the vent to heat gas entering the filter cavity through the vent.

In one aspect, the desorption device further comprises a desorption pipeline, one end of the desorption pipeline is communicated with the desorption port, the other end of the desorption pipeline is used for communicating with the engine, the desorption device further comprises a tank upper cover, the tank upper cover is arranged on the upper side of the tank, a liquid collecting cavity is formed between the tank upper cover and the tank, the liquid collecting cavity is communicated with the adsorption port, and the desorption pipeline penetrates through the liquid collecting cavity.

In one aspect, the desorption pipeline comprises a transmission section and a retraction section, the diameter of the retraction section is smaller than that of the transmission section, the transmission section is connected with the retraction section, and the retraction section is positioned at one side of the transmission section close to the desorption port;

the desorption device further comprises a negative pressure valve, wherein the negative pressure valve is arranged at the inward shrinking section of the desorption pipeline and is used for being communicated with the liquid collecting cavity.

In one aspect, the negative pressure valve is a venturi valve.

In one aspect, the adsorption port and the desorption port are arranged on the same side of the tank body;

or the adsorption port and the desorption port are arranged on two opposite sides of the tank body

In one aspect, the desorption device further comprises a separation plate, wherein the separation plate is arranged at the adsorption port, surrounds the periphery of the adsorption port, and extends from the bottom end to the top end of the liquid collection cavity.

In one aspect, the tank body upper cover is further provided with a liquid collecting port, and the liquid collecting port is positioned at the top end of the liquid collecting cavity;

the desorption device further comprises an adsorption pipeline, one end of the adsorption pipeline is communicated with the liquid collecting port, and the other end of the adsorption pipeline is used for being communicated with the fuel tank.

In one aspect, the desorption device further comprises: and the liquid collector is arranged in the adsorption pipeline.

In one aspect, the desorption device further comprises: the first valve is arranged in the adsorption pipeline and is positioned between the tank upper cover and the fuel tank;

and the second valve is arranged in the desorption pipeline and is positioned between the upper cover of the tank body and the engine.

In one aspect, the vent is located on a side of the adsorption port facing away from the desorption port, and the desorption device further includes:

the first partition plate is arranged in the filter cavity and positioned between the desorption port and the adsorption port, and extends from the top end to the bottom end of the filter cavity;

the second baffle, the second baffle is located in the filter chamber, the second baffle is located adsorb the mouth with between the air vent, the second baffle is followed the top of filter chamber extends to the bottom, the length of second baffle is greater than the length of first baffle.

In one aspect, the heater is a PTC heater.

In addition, in order to solve the above-mentioned problem, the present application also provides a vehicle, the vehicle includes engine, fuel tank and desorption device as described above, the engine communicates the desorption mouth, the fuel tank communicates the absorption mouth.

In the technical scheme of this application, adsorption carrier in the jar body adsorbs oil gas molecule, when carrying out the desorption, the atmosphere enters into the filter chamber of jar body through the air vent, forms the air current of flow. The oil gas molecules are separated from the adsorption carrier under the driving of flowing air flow. Wherein, through setting up the heater that flows into the filter chamber in the air vent can also heat, form the hot gas flow. The oil gas molecules are easier to separate from the adsorption carrier under the drive of the hot air flow, so that the desorption effect of the oil gas molecules in the carbon tank is improved, the condition that the oil gas molecules are dissipated to the atmosphere is reduced, and the problem of atmosphere pollution is solved.

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

The above and other objects, features and advantages of the present application will become more apparent by describing in detail exemplary embodiments thereof with reference to the attached drawings.

Fig. 1 is a schematic structural view of a desorption apparatus in the present application.

Fig. 2 is a schematic diagram of the flow steps of the desorption method in the present application.

Fig. 3 is a schematic diagram of the flow steps of the desorption method according to the present application, in which step S20 is further developed.

Fig. 4 is a schematic diagram of the flow steps further developed in step S10 in the desorption method in the present application.

The reference numerals are explained as follows:

10. a tank body; 20. a heater; 30. a desorption pipeline; 40. a negative pressure valve; 50. a tank upper cover; 60. an adsorption pipeline;

110. a filter chamber; 120. an adsorption port; 130. a desorption port; 310. a transmission section; 320. a shrinking section; 510. a liquid collection cavity; 520. a liquid collecting port; 710. a partition plate; 720. a first separator; 730. a second separator; 810. a liquid collector; 820. a first valve; 830. a second valve; 910. an engine; 920. a fuel tank; 930. and a controller.

Detailed Description

While this application is susceptible of embodiment in different forms, there is shown in the drawings and will herein be described in detail, specific embodiments thereof with the understanding that the present disclosure is to be considered as an exemplification of the principles of the application and is not intended to limit the application to that as illustrated herein.

Thus, reference to one feature indicated in this specification will be used to describe one of the features of an embodiment of the application, and not to imply that each embodiment of the application must have the described feature. Furthermore, it should be noted that the present specification describes a number of features. Although certain features may be combined together to illustrate a possible system design, such features may be used in other combinations not explicitly described. Thus, unless otherwise indicated, the illustrated combinations are not intended to be limiting.

In the embodiments shown in the drawings, indications of orientation (such as up, down, left, right, front and rear) are used to explain the structure and movement of the various elements of the present application are not absolute but relative. These descriptions are appropriate when these elements are in the positions shown in the drawings. If the description of the position of these elements changes, the indication of these directions changes accordingly.

Example embodiments will now be described more fully with reference to the accompanying drawings. However, the exemplary embodiments may be embodied in many forms and should not be construed as limited to the examples set forth herein; rather, these example embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the concept of the example embodiments to those skilled in the art. The drawings are merely schematic illustrations of the present application and are not necessarily drawn to scale. The same reference numerals in the drawings denote the same or similar parts, and thus a repetitive description thereof will be omitted.

Preferred embodiments of the present application are further elaborated below in conjunction with the drawings of the present specification.

Referring to fig. 1, the present application provides a desorption device, which is applied to a vehicle. The desorption device can be applied to a pure fuel vehicle and also can be applied to a hybrid electric vehicle. The desorption device comprises: a tank 10 and a heater 20. A heater 20 is provided adjacent to the tank 10 for heating air entering the tank 10.

The tank body 10 is provided with an adsorption port 120 and a desorption port 130, the tank body 10 encloses to form a filter cavity 110, the adsorption port 120 and the desorption port 130 are communicated with the filter cavity 110, the desorption port 130 is used for being communicated with the engine 910, and the adsorption port 120 is used for being communicated with the fuel tank 920. The molecules of the oil and gas in the fuel tank 920 may enter the filter cavity 110 of the tank 10 through the adsorption port 120. The filter cavity 110 is provided with an adsorption carrier, and the adsorption carrier is used for adsorbing oil gas molecules, and the adsorption carrier intercepts the oil gas molecules. The adsorption carrier is usually carbon powder, and the oil gas molecules are adsorbed by the carbon powder.

The tank body 10 is also provided with a vent, and the vent is communicated with the filter cavity 110; air in the atmosphere can enter the filter cavity 110 through the air vent and flow to the engine 910 through the desorption port 130, so that an air flow is formed from the air vent to the desorption port 130, and the air flow drives the oil gas molecules to separate from the adsorption carrier.

Heater 20 is positioned adjacent the vent to heat the gas entering filter cavity 110 through the vent. Under the action of the heater 20, the temperature of the gas rises, the oil gas molecules are more active, the adsorption carrier is difficult to retain the oil gas molecules, and the oil gas molecules are easier to separate from the adsorption carrier, so that the desorption effect is improved.

In the technical solution of this embodiment, the adsorption carrier in the tank 10 adsorbs the oil gas molecules, and when desorption is performed, the air enters the filter cavity 110 of the tank 10 through the vent, so as to form a flowing air flow. The oil gas molecules are separated from the adsorption carrier under the driving of flowing air flow. Wherein the hot air flow is formed by heating the air flowing into the filter chamber 110 by the heater 20 provided at the air vent. The oil gas molecules are easier to separate from the adsorption carrier under the drive of the hot air flow, so that the desorption effect of the oil gas molecules in the carbon tank is improved, the condition that the oil gas molecules are dissipated to the atmosphere is reduced, and the problem of atmosphere pollution is solved.

The hydrocarbon in the canister is desorbed more cleanly by the heater 20.

Further, the heater 20 is a PTC (Positive Temperature Coefficient ) heater, which has the advantages of small thermal resistance and high heat exchange efficiency, and can more effectively and rapidly increase the temperature of the air flow passing through the air vent. The PTC heater can be buckled on the air vent to form a shutter structure for allowing air to pass through, so that air flowing through the surface can be heated when the PTC heater works.

The PTC heater can be a thermistor element, so that the PTC heater has the characteristic of automatically controlling constant temperature heating, and the PTC heater element works in a non-contact action state when controlling temperature, so that the PTC heater can be used on automobiles with continuously changing conditions under peak wave environments.

In one embodiment, the desorption device further comprises: the desorption pipeline 30, the one end intercommunication desorption mouth 130 of desorption pipeline 30, the other end is used for the intercommunication engine 910, and the desorption device still includes jar body upper cover 50, and jar body upper cover 50 locates the upside of jar body 10, forms the liquid collecting chamber 510 between jar body upper cover 50 and the jar body 10, and liquid collecting chamber 510 is arranged in collecting the oil gas molecule that the loss was come out in the fuel tank 920, and oil gas molecule can condense in liquid collecting chamber 510 and preserve. Excessive oil gas molecules are prevented from immersing into the filter cavity 110, and carbon powder failure in the filter cavity 110 is avoided.

Specifically, the liquid collecting cavity 510 is communicated with the adsorption port 120, the oil gas molecules escaping from the fuel tank 920 enter the liquid collecting cavity 510 in advance, the liquid collecting cavity 510 collects the oil gas molecules in advance, a small amount of the oil gas molecules enter the filter cavity 110 through the adsorption port 120, and carbon powder can filter a small amount of the oil gas molecules to prevent the pollution to the atmosphere. The desorption pipeline 30 is arranged in the liquid collection cavity 510 in a penetrating way, namely one end of the desorption pipeline 30 is connected with the desorption port 130, and the other end of the desorption pipeline 30 penetrates through the liquid collection cavity 510 and then is connected with the engine 910. In this case, the desorption line 30 is connected to the engine 910 by a short path using the position of the liquid collection chamber 510. And the excessive oil is stored by the storage function of the liquid collecting cavity 510.

As can be seen from the above description, the liquid collecting cavity 510 can store oil, but if the stored oil is too much, the oil enters the filter cavity 110 through the adsorption port 120, and the oil is soaked in the carbon powder, which easily causes the carbon powder to fail. For this purpose, the desorption line 30 comprises a delivery section 310 and an retraction section 320, the diameter of the retraction section 320 is smaller than that of the delivery section 310, the delivery section 310 is connected with the retraction section 320, and the retraction section 320 is located at one side of the delivery section 310 close to the desorption port 130. The desorption device further comprises a negative pressure valve 40, wherein the negative pressure valve 40 is arranged at the shrinking section 320 of the desorption pipeline 30 and is used for communicating with the liquid collecting cavity 510. The negative pressure valve 40 is directly communicated with the liquid collecting cavity 510, and oil in the liquid collecting cavity 510 can be directly discharged through the negative pressure valve 40 without passing through the filter cavity 110, so that oil storage in the liquid collecting cavity 510 is reduced, and the condition of carbon powder failure is reduced.

Specifically, when the engine 910 is operated, the engine 910 consumes oil and gas molecules, oxygen, etc., negative pressure is generated at one side of the engine 910, and air flow flows from the filter chamber 110 to the engine 910. On the basis of negative pressure generated by the engine 910, with the use of the negative pressure valve 40, the oil in the liquid collecting cavity 510 also enters the desorption pipeline 30 through the negative pressure valve 40, so that the condition that the oil flows to the filter cavity 110 is reduced, and even the oil is prevented from flowing to the filter cavity 110. A negative pressure is generated at the end of the desorption line 30 near the engine 910, the air pressure at the negative pressure side is low, and the air pressure in the filter chamber 110 flows to the negative pressure side. The air flow from the filter cavity 110 flows to the engine 910, and the desorption of the oil gas molecules of the carbon rod in the tank body 10 is completed.

In addition, the path of the gas flow passing through the contracting section 320 is reduced, so that a gas flow passing area is formed at a position close to the desorption port 130, and the flow speed of the gas flow is improved in the process of increasing from small to large.

Further, the negative pressure valve 40 may be a venturi valve. The venturi valve is also called as venturi valve, and the venturi air valve is an air valve manufactured based on the principle of venturi effect. The venturi valve operates by thickening the gas flow to increase the gas flow rate and to create a vacuum zone behind the venturi outlet. When the vacuum area is close to the filter cavity 110, a certain adsorption effect is generated on the filter cavity 110. Through the arrangement of the venturi valve, the oil in the liquid collecting cavity 510 is ensured to realize active and controllable desorption operation.

In one aspect, the placement of the adsorption port 120 and the desorption port 130 may be in a variety of ways.

The first arrangement mode is that the adsorption port 120 and the desorption port 130 are arranged on the same side of the tank body 10, so that the distance from the adsorption port 120 to the desorption port 130 is short, and oil gas molecules from the fuel tank 920 can enter the desorption port 130 from the adsorption port 120 in a short time; short distance and quick time, and reduces the dissipation situation through the vent.

The second setting mode is that the adsorption port 120 and the desorption port 130 are arranged on two opposite sides of the tank body 10, and the adsorption port 120 and the desorption port 130 are far away from each other, so that the adsorption carrier in the tank body 10 can be fully utilized, and the adsorption carrier can fully filter and absorb the dissipated oil gas molecules to prevent the pollution to the atmosphere.

In the first arrangement, the adsorption port 120 and the desorption port 130 are provided on the upper side of the tank 10. Further, the desorption device further includes a partition plate 710, where the partition plate 710 is disposed at the adsorption port 120, surrounds the periphery of the adsorption port 120, and extends from the bottom end to the top end of the liquid collection cavity 510. The partition plate 710 is higher than the adsorption port 120 to isolate the adsorption port 120 from the bottom end of the liquid collecting cavity 510, and the negative pressure valve 40 is lower than the partition plate 710, so that the oil entering the liquid collecting cavity 510 is sucked away by the negative pressure valve 40, and the oil entering the liquid collecting cavity 510 is difficult to spread to the adsorption port 120, so that excessive oil is prevented from immersing into the filter cavity 110. If too much oil is immersed into the filter cavity 110, carbon powder in the filter cavity 110 is easy to fail, and a certain isolation height is set at the adsorption port 120 through the isolation plate 710, so that carbon powder in the filter cavity 110 is further prevented from being failed.

In one aspect, the tank upper cover 50 is further provided with a liquid collecting port 520, and the liquid collecting port 520 is positioned at the top end of the liquid collecting cavity 510; the desorption device further comprises an adsorption pipeline 60, one end of the adsorption pipeline 60 is communicated with the liquid collecting port 520, and the other end of the adsorption pipeline 60 is communicated with the fuel tank 920. The adsorption line 60 is connected to introduce the oil and gas molecules in the fuel tank 920 to the liquid collection port 520.

It should be further noted that the position of the adsorption port 120 deviates from the position of the liquid collecting port 520, so as to prevent the oil and gas molecules of the liquid collecting port 520 from directly entering the filter cavity 110. The suction port 120 and the liquid collecting port 520 may be completely offset from each other, or may be provided with partial opening areas facing each other.

To further reduce the ingress of liquid oil into the tank 10 from the fuel tank 920, the desorption apparatus further comprises: a liquid trap 810, the liquid trap 810 being provided in the adsorption line 60. By providing the liquid trap 810, the oil and gas molecules in the fuel tank 920 will first enter the liquid trap 810, and the liquid trap 810 serves to pre-protect the carbon powder in the tank 10. Preventing dynamic leakage of oil in the oil tank from entering the liquid collecting cavity 510, and causing excessive oil in the liquid collecting cavity 510. Particularly, when the vehicle shakes, the liquid collector 810 can fully play a role of storing oil by matching with the design of the liquid collecting cavity 510, so that excessive oil is prevented from entering the carbon tank.

In order to effectively control the circulation of the oil and gas molecules in the adsorption pipeline 60, the desorption device further comprises: a first valve 820, the first valve 820 is disposed in the adsorption line 60, and the first valve 820 is located between the tank top 50 and the fuel tank 920. The first valve 820 is used to control the opening or closing of the adsorption line 60. When the adsorption line 60 is required to be opened, the first valve 820 is opened, and when the adsorption line 60 is required to be closed, the first valve 820 is closed. A controller 930 is connected to the first valve 820, and the opening or closing of the first valve 820 is controlled by the controller 930.

The desorption device further comprises: the second valve 830, the second valve 830 is disposed in the desorption line 30 and is located between the tank top 50 and the engine 910. The second valve 830 is used for controlling the on-off of the desorption pipeline 30, and when the desorption operation is required, the second valve 830 is opened to ensure that the oil in the liquid collection cavity 510 and the oil gas molecules in the filter cavity 110 can be desorbed smoothly.

The communication between the fuel tank 920 and the carbon tank can be effectively controlled through the arrangement of the first valve 820, so that the design of the liquid collector 810 can be omitted, the space is saved, the volume of the fuel tank 920 is increased by utilizing the saved space, and the cruising ability of the whole vehicle is improved. The first valve 820 and the second valve 830 are electromagnetic valves, and the controller 930 can control the on-off of the first valve 820 and the second valve 830 respectively.

Additionally, a pressure sensor may be provided in the fuel tank 920, through which the pressure in the fuel tank 920 is detected, and if the pressure is too high, the controller 930 may control the first valve 820 to open.

In order to more effectively perform the adsorption function of the adsorption carrier in the tank body 10, the air vent is located at one side of the adsorption port 120 away from the desorption port 130, and the desorption device further includes: a first partition 720 and a second partition 730. The path of the oil and gas molecules from the adsorption port 120 to the desorption port 130 is changed by the provision of the first partition 720. The path of the gas flow from the vent port to the desorption port 130 is changed by the provision of the second partition 730.

The first partition 720 is disposed in the filter cavity 110 and between the desorption port 130 and the adsorption port 120, and the first partition 720 extends from the top end to the bottom end of the filter cavity 110; the first partition 720 separates the desorption port 130 from the adsorption port 120, and the oil gas molecules from the adsorption port 120 to the desorption port 130 need to bypass the first partition 720 to enter the engine 910, so that the path length of the oil gas molecules in the filter cavity 110 is increased, and the adsorption carrier fully absorbs the oil gas molecules.

The second separator 730 is disposed in the filter chamber 110, the second separator 730 is disposed between the adsorption port 120 and the air vent, the second separator 730 extends from the top end to the bottom end of the filter chamber 110, the second separator 730 isolates the adsorption port 120 from the air vent, the adsorption port 120 is disposed at the top end of the filter chamber 110, and the air flow can move from top to bottom. The air flow through the vent port extends through the second partition 730 toward the bottom end of the filter cavity 110 and also through the gap between the second partition 730 and the bottom end of the filter cavity 110. In short, it is ensured that the air flow from the vent moves from the bottom end toward the desorption port 130, i.e., from bottom to top. Thus, the air flow can pass through the whole filter cavity 110 as much as possible, the desorption of the adsorption carrier in the filter cavity 110 is fully completed, and the residue of oil gas molecules is reduced.

In addition, the length of the second partition 730 is greater than the length of the first partition 720. The flow gradient of the air flow from the air vent to the desorption port 130 can be formed, so that the air flow can be prevented from flowing out through the adsorption port 120 due to the shielding of the air flow by the first partition plate 720, and the collision of the air flow in the adsorption pipeline 60 can be reduced.

Referring to fig. 2, the present application further provides a desorption method, where the desorption method is applied to the desorption apparatus as above, and the desorption method includes:

step S10, acquiring operation parameters of the vehicle, and determining to start desorption operation according to the operation parameters; and determining the running condition of the vehicle through the running parameters of the vehicle, and judging whether the desorption operation of the vehicle can be started or not.

In step S20, during the desorption operation, the heater 20 is controlled to be turned on to heat the gas entering the filter cavity 110 through the vent. When it is determined that the desorption operation can be performed when the vehicle is running, the heater 20 is controlled to be started, the starting temperature of the heater 20 is increased, and when the air flow of the air vent enters the filter cavity 110, the air is heated, so that the oil gas molecules are active, and the oil gas molecules are more easily separated from the adsorption carrier.

In the technical solution of this embodiment, the adsorption carrier in the tank 10 adsorbs the oil gas molecules, and when desorption is performed, the air enters the filter cavity 110 of the tank 10 through the vent, so as to form a flowing air flow. The oil gas molecules are separated from the adsorption carrier under the driving of flowing air flow. Wherein the hot air flow is formed by heating the air flowing into the filter chamber 110 by the heater 20 provided at the air vent. The oil gas molecules are easier to separate from the adsorption carrier under the drive of the hot air flow, so that the desorption effect of the oil gas molecules in the carbon tank is improved, and the problems that the oil gas molecules are dissipated to the atmosphere and pollute the atmosphere are reduced.

Referring to FIG. 3, the operating parameters include ambient temperature; the ambient temperature refers to the temperature of the environment in which the heater 20 is located. The vehicle may be provided with a temperature detector by which the ambient temperature into the tank 10 is measured.

Prior to the step of controlling the heater 20 to be on, it includes:

step S210, comparing the ambient temperature with a preset temperature; by comparing the ambient temperature with a predetermined temperature, the magnitude relationship is determined to determine if the ambient temperature is high enough, and if so, the heater 20 may not be turned on. The preset temperature may be set between 10 degrees celsius and 30 degrees celsius, such as 20 degrees celsius.

Step S211, when the ambient temperature is less than or equal to the preset temperature, generating a heater 20 on command; an ambient temperature less than or equal to the predetermined temperature indicates that the ambient temperature is low, and the temperature of the air flow entering the tank 10 is also low, so that it is difficult to quickly move the oil and gas molecules. Upon receiving the on command from the heater 20, the heater 20 starts to operate, and the temperature of the air flow flowing through the heater 20 increases.

In step S212, when the ambient temperature is greater than the preset temperature, a heater 20 off command is generated. At this time, it is explained that the ambient temperature is high, and the oil and gas molecules can be moved rapidly without using the heater 20. By turning off the heater 20 by a turn-off command, a portion of the energy can also be saved.

Referring to FIG. 4, the operating parameters include an air-fuel ratio of engine 910; the air-fuel ratio is the ratio of the mass of air and fuel in the mixture, from which it can be determined that the engine 910 is in an operating state.

Determining to start the desorption operation according to the operation parameters, wherein the method comprises the following steps:

step S110, comparing the air-fuel ratio of the engine 910 with a preset range; the preset range may be understood as when the operation state of the engine 910 is stable, or may be understood as when the fuel combustion efficiency in the engine 910 is relatively high.

In step S120, the desorption operation is started when the air-fuel ratio of the engine 910 is within the preset range. A second valve 830 is provided between the engine 910 and the tank 10, and the controller 930 is connected to the second valve 830. After receiving the signal that the air-fuel ratio of the engine 910 is within the preset range, the controller 930 sends a command to open the second valve 830, and the carbon rod in the tank 10 is subjected to desorption operation. For example, the preset range is (λ1, λ2), the air-fuel ratio of the engine 910 is λ, and the second valve 830 is opened when λ satisfies the range of λ1 and λ2, that is, λ1 < λ < λ2.

In addition, in the state that the second valve 830 is opened, the controller 930 determines whether the pressure in the fuel tank 920 is within a set pressure range according to the pressure of the pressure sensor on the fuel tank 920, and if so, controls the first valve 820 to be closed, so that the oil gas in the fuel tank 920 is controlled to be in the fuel tank and not discharged to the carbon canister, and the concentration of the oil gas in the carbon canister is reduced; if the pressure in the fuel tank 920 is greater than the set pressure range, the first valve 820 needs to be opened to avoid over pressurization of the fuel tank 920.

The application also provides a vehicle, and the vehicle includes engine, fuel tank and above desorption device, and engine intercommunication desorption mouth, fuel tank intercommunication adsorption mouth. When the engine works, negative pressure is generated, and air flow of the filter cavity flows towards the engine. The fuel tank is used for storing fuel.

The embodiments of the vehicle of the present utility model include all the technical solutions of all the embodiments of the desorption device, and the achieved technical effects are also completely the same, and are not described herein again.

While the present application has been described with reference to several exemplary embodiments, it is understood that the terminology used is intended to be in the nature of words of description and illustration rather than of limitation. As the present application may be embodied in several forms without departing from the spirit or essential attributes thereof, it should be understood that the above-described embodiments are not limited by any of the details of the foregoing description, but rather should be construed broadly within its spirit and scope as defined in the appended claims, and therefore all changes and modifications that fall within the metes and bounds of the claims, or equivalences of such metes and bounds are therefore intended to be embraced by the appended claims.

Claims

1. A desorption apparatus, wherein the desorption apparatus is applied to a vehicle, the desorption apparatus comprising:

2. The desorption device of claim 1, further comprising a desorption line, one end of the desorption line being in communication with the desorption port, the other end being in communication with the engine, the desorption device further comprising a tank upper cover disposed on an upper side of the tank, a liquid collecting cavity being formed between the tank upper cover and the tank, the liquid collecting cavity being in communication with the adsorption port, the desorption line being disposed through the liquid collecting cavity.

3. The desorption device of claim 2 wherein the desorption line comprises a transfer section and a retraction section, the retraction section having a diameter less than the diameter of the transfer section, the transfer section being connected to the retraction section, the retraction section being located on a side of the transfer section adjacent the desorption port;

4. A desorption apparatus as claimed in claim 3, wherein the negative pressure valve is a venturi valve.

5. A desorption apparatus as claimed in claim 3, wherein said adsorption port and said desorption port are provided on the same side of said canister;

or the adsorption port and the desorption port are arranged on two opposite sides of the tank body.

6. The desorption device of claim 5 further comprising a separator plate disposed about the adsorption port and extending from the bottom end to the top end of the liquid collection chamber.

7. The desorption device of claim 5 wherein the canister upper cover is further provided with a liquid collection port, said liquid collection port being located at the top end of the liquid collection chamber;

8. The desorption device of claim 7, wherein the desorption device further comprises: and the liquid collector is arranged in the adsorption pipeline.

9. The desorption device of claim 7, wherein the desorption device further comprises:

the first valve is arranged in the adsorption pipeline and is positioned between the tank upper cover and the fuel tank;

10. The desorption device of any one of claims 1 to 9, wherein the vent is located on a side of the adsorption port facing away from the desorption port, the desorption device further comprising:

11. The desorption device of any one of claims 1 to 9, wherein the heater is a PTC heater.

12. A vehicle comprising an engine, a fuel tank and a desorption apparatus as claimed in any one of claims 1 to 11, the engine being in communication with the desorption port, the fuel tank being in communication with the adsorption port.