1. The utility model provides a fuel system active desorption device which characterized in that includes:

the fuel absorption steam pipeline is positioned between a brake vacuum pump and a fuel desorption pipeline of the vehicle and connects the brake vacuum pump and the fuel desorption pipeline of the vehicle;

a supply fuel vapor line between and connecting the brake vacuum pump and the engine of the vehicle;

the brake vacuum pump actively absorbs fuel steam in the fuel desorption pipeline through the absorption fuel steam pipeline and conveys the fuel steam actively absorbed from the fuel desorption pipeline to the engine through the supply fuel steam pipeline.

2. The active desorption device of the fuel system as claimed in claim 1, wherein:

one end of the fuel absorption steam pipeline is connected with a brake vacuum pump of the vehicle, and the other end of the fuel absorption steam pipeline is connected with a fuel desorption pipeline of the vehicle;

one end of the fuel steam supply pipeline is connected with a brake vacuum pump of the vehicle, and the other end of the fuel steam supply pipeline is connected with an engine of the vehicle.

3. The active desorption device of the fuel system as claimed in claim 1, wherein:

a sensor is arranged on the fuel absorption steam pipeline and used for controlling the connection or the closure of the fuel absorption steam pipeline;

and a sensor is arranged on the fuel supply steam pipeline and used for controlling the communication or the sealing of the fuel supply steam pipeline.

4. The active desorption device of the fuel system as claimed in claim 3, wherein: and the sensors on the absorption fuel vapor pipeline and the supply fuel vapor pipeline are electrically connected with an ECU of the vehicle.

5. The active desorption device of the fuel system as claimed in claim 4, wherein:

when fuel steam desorption is required, the ECU controls sensors on the fuel steam absorption pipeline and the fuel steam supply pipeline so as to communicate the fuel steam absorption pipeline and the fuel steam supply pipeline;

when fuel steam desorption is not needed, the ECU controls the sensors on the fuel steam absorption pipeline and the fuel steam supply pipeline so as to seal the fuel steam absorption pipeline and the fuel steam supply pipeline.

6. The active desorption device of the fuel system as claimed in claim 1, wherein: the brake vacuum pump is also provided with a first pipeline which is connected with an air filtering air pipe of the vehicle to suck air into the air filtering air pipe and a second pipeline which is connected with the outside of the vehicle to exhaust air to the outside of the vehicle.

7. The active desorption device of the fuel system as claimed in claim 6, wherein: the brake vacuum pump is also connected with a brake pedal of the vehicle.

8. The active desorption device of the fuel system as claimed in claim 7, wherein:

the first pipeline is provided with a sensor, and the sensor arranged on the first pipeline is used for controlling the communication or the sealing of the first pipeline;

the second pipeline is provided with a sensor, and the sensor arranged on the first pipeline is used for controlling the communication or the sealing of the second pipeline;

and the sensors on the first pipeline and the second pipeline are electrically connected with an ECU of the vehicle.

9. The active desorption device of the fuel system as claimed in claim 8, wherein:

when the brake pedal is stepped, the ECU controls the sensors on the first pipeline and the second pipeline so as to communicate the first pipeline and the second pipeline;

when the brake pedal is not stepped on, the ECU controls the sensors on the first pipeline and the second pipeline so as to seal the first pipeline and the second pipeline.

10. An automobile, characterized in that: comprising an active desorption device of the fuel system according to any one of claims 1 to 9.

Background

In hybrid and extended range type vehicles, in order to reduce the oil consumption of the whole vehicle, the engine cannot be started in the whole process, so that an electromagnetic valve of a carbon tank of the engine cannot be opened in real time, and fuel steam stored in the carbon tank in a fuel system cannot timely and effectively enter the engine to participate in combustion; meanwhile, when the engine is started, the carbon tank electromagnetic valve is opened, the negative pressure in the air inlet manifold of the engine is small and the pressure difference in the air inlet hose is small in consideration of the oil consumption of the whole vehicle, under the condition, fuel steam cannot completely and effectively enter the engine to participate in combustion in natural air suction and high-pressure desorption, so that the fuel steam cannot be desorbed in time, the fuel steam overflows in the carbon tank, the requirements of relevant regulations are not met, and the environment and energy are polluted.

In view of the above circumstances, it is currently common practice to provide an active desorption pump on an automobile, and install the active desorption pump behind a carbon tank of the entire automobile, and when the active desorption pump is powered on, an internal air pump of the active desorption pump works to blow fuel vapor in the carbon tank to an engine. However, in the mode of arranging the active desorption pump, the active desorption pump blows air into the vehicle when working, the noise is large, the noise can be transmitted into the cab through the floor of the whole vehicle, the driving experience of the vehicle is influenced, the active desorption pump is generally an imported product, the price is high, and the manufacturing cost of the vehicle is increased.

Disclosure of Invention

Aiming at the defects in the prior art, the invention aims to provide the fuel system active desorption device and the automobile, which can effectively save the fuel steam desorption cost, reduce the vehicle manufacturing cost and ensure the vehicle driving experience.

In order to achieve the above object, the present invention provides an active desorption device for a fuel system, comprising:

the fuel absorption steam pipeline is positioned between a brake vacuum pump and a fuel desorption pipeline of the vehicle and connects the brake vacuum pump and the fuel desorption pipeline of the vehicle;

a supply fuel vapor line between and connecting the brake vacuum pump and the engine of the vehicle;

the brake vacuum pump actively absorbs fuel steam in the fuel desorption pipeline through the absorption fuel steam pipeline and conveys the fuel steam actively absorbed from the fuel desorption pipeline to the engine through the supply fuel steam pipeline.

On the basis of the technical proposal, the device comprises a shell,

one end of the fuel absorption steam pipeline is connected with a brake vacuum pump of the vehicle, and the other end of the fuel absorption steam pipeline is connected with a fuel desorption pipeline of the vehicle;

one end of the fuel steam supply pipeline is connected with a brake vacuum pump of the vehicle, and the other end of the fuel steam supply pipeline is connected with an engine of the vehicle.

On the basis of the technical proposal, the device comprises a shell,

a sensor is arranged on the fuel absorption steam pipeline and used for controlling the connection or the closure of the fuel absorption steam pipeline;

and a sensor is arranged on the fuel supply steam pipeline and used for controlling the communication or the sealing of the fuel supply steam pipeline.

On the basis of the technical scheme, the sensors on the fuel vapor absorption pipeline and the fuel vapor supply pipeline are electrically connected with an ECU of the vehicle.

On the basis of the technical proposal, the device comprises a shell,

when fuel steam desorption is required, the ECU controls sensors on the fuel steam absorption pipeline and the fuel steam supply pipeline so as to communicate the fuel steam absorption pipeline and the fuel steam supply pipeline;

when fuel steam desorption is not needed, the ECU controls the sensors on the fuel steam absorption pipeline and the fuel steam supply pipeline so as to seal the fuel steam absorption pipeline and the fuel steam supply pipeline.

On the basis of the technical scheme, the brake vacuum pump is also provided with a first pipeline which is connected with an air filtering air pipe of the vehicle to suck air into the air filtering air pipe, and a second pipeline which is connected with the outside of the vehicle to exhaust air to the outside of the vehicle.

On the basis of the technical scheme, the brake vacuum pump is also connected with a brake pedal of the vehicle.

On the basis of the technical proposal, the device comprises a shell,

the first pipeline is provided with a sensor, and the sensor arranged on the first pipeline is used for controlling the communication or the sealing of the first pipeline;

the second pipeline is provided with a sensor, and the sensor arranged on the first pipeline is used for controlling the communication or the sealing of the second pipeline;

and the sensors on the first pipeline and the second pipeline are electrically connected with an ECU of the vehicle.

On the basis of the technical proposal, the device comprises a shell,

when the brake pedal is stepped, the ECU controls the sensors on the first pipeline and the second pipeline so as to communicate the first pipeline and the second pipeline;

when the brake pedal is not stepped on, the ECU controls the sensors on the first pipeline and the second pipeline so as to seal the first pipeline and the second pipeline.

The invention provides an automobile which comprises the fuel system active desorption device.

Compared with the prior art, the invention has the advantages that: the fuel steam desorption pipeline is arranged between the brake vacuum pump of the vehicle and the fuel desorption pipeline to connect the brake vacuum pump of the vehicle with the fuel desorption pipeline, the fuel steam supply pipeline is arranged between the brake vacuum pump of the vehicle and the engine to connect the brake vacuum pump of the vehicle with the engine, when the fuel steam desorption is carried out, the brake vacuum pump actively absorbs the fuel steam in the fuel desorption pipeline by absorbing the fuel steam pipeline and conveys the fuel steam actively absorbed from the fuel desorption pipeline to the engine by supplying the fuel steam pipeline, the existing brake vacuum pump in the vehicle is directly used to realize the fuel steam desorption, the fuel steam desorption cost is effectively saved, thereby reducing the manufacturing cost of the vehicle, meanwhile, the existing brake vacuum pump of the vehicle is utilized to carry out the fuel steam desorption, the noise of the brake vacuum pump in the work is lower, effectively guarantee the driving experience of vehicle.

Drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings needed to be used in the description of the embodiments are briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present application, 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 structural diagram of an active desorption device of a fuel system in an embodiment of the invention.

Detailed Description

The embodiment of the invention provides an active desorption device of a fuel system, which is characterized in that an absorption fuel steam pipeline is arranged between a brake vacuum pump and a fuel desorption pipeline of a vehicle to connect the brake vacuum pump and the fuel desorption pipeline of the vehicle, a fuel steam supply pipeline is arranged between the brake vacuum pump and an engine of the vehicle to connect the brake vacuum pump and the engine of the vehicle, when fuel steam desorption is carried out, the brake vacuum pump actively absorbs the fuel steam in the fuel desorption pipeline by absorbing the fuel steam pipeline and transmits the fuel steam actively absorbed from the fuel desorption pipeline to the engine by supplying the fuel steam pipeline, the existing brake vacuum pump in the vehicle is directly used to realize the fuel steam desorption, the fuel steam desorption cost is effectively saved, the manufacturing cost of the vehicle is reduced, and the existing brake vacuum pump of the vehicle is used for fuel steam desorption, the noise of the brake vacuum pump is low in work, and the driving experience of the vehicle is effectively guaranteed. The embodiment of the invention correspondingly provides an automobile.

In order to make the objects, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are some embodiments of the present application, but not all embodiments.

Referring to fig. 1, the active desorption device for a fuel system provided by the embodiment of the invention comprises an absorption fuel steam pipeline and a supply fuel steam pipeline, wherein the absorption fuel steam pipeline is located between a brake vacuum pump and a fuel desorption pipeline of a vehicle and connects the brake vacuum pump and the fuel desorption pipeline of the vehicle, that is, the fuel desorption pipeline and the brake vacuum pump of the vehicle are communicated through the absorption fuel steam pipeline, so that the brake vacuum pump of the vehicle can absorb fuel steam in the fuel desorption pipeline; the fuel steam supply pipeline is positioned between a brake vacuum pump and an engine of the vehicle and connects the brake vacuum pump and the engine of the vehicle, namely, the brake vacuum pump and the transmitter of the vehicle are connected through the fuel steam supply pipeline, so that fuel steam sucked from the fuel desorption pipeline by the brake vacuum pump can enter the engine to realize combustion.

The brake vacuum pump actively absorbs fuel steam in the fuel desorption pipeline through the absorption fuel steam pipeline, and delivers the fuel steam actively absorbed from the fuel desorption pipeline to the engine through supplying the fuel steam pipeline, namely, the fuel steam pipeline is supplied for communicating the fuel desorption pipeline and the brake vacuum pump, and the brake vacuum pump and the transmitter are communicated through the absorption fuel steam pipeline, so that the fuel steam in the fuel desorption pipeline can enter the transmitter to be combusted, and the fuel steam desorption is realized. The invention realizes fuel steam desorption by directly using the existing brake vacuum pump in the vehicle, effectively saves the fuel steam desorption cost, thereby reducing the vehicle manufacturing cost, and simultaneously carries out fuel steam desorption by using the existing brake vacuum pump of the vehicle, so that the brake vacuum pump has lower noise in the working process, and effectively ensures the driving experience of the vehicle. Furthermore, the fuel steam is desorbed actively by the brake vacuum pump, the utilization rate of the fuel steam is increased, and the problem of low desorption efficiency of the fuel steam can be solved effectively.

In the embodiment of the invention, one end of the fuel absorption steam pipeline is connected with a brake vacuum pump of a vehicle, the other end of the fuel absorption steam pipeline is connected with a fuel desorption pipeline of the vehicle, and the fuel desorption pipeline is communicated with the brake vacuum pump through the fuel absorption steam pipeline, so that the brake vacuum pump can absorb fuel steam in the fuel desorption pipeline; one end of the fuel steam supply pipeline is connected with a brake vacuum pump of the vehicle, the other end of the fuel steam supply pipeline is connected with an engine of the vehicle, and the brake vacuum pump is communicated with the engine through the fuel steam supply pipeline, so that fuel steam sucked by the brake vacuum pump from the fuel desorption pipeline can enter the engine to be combusted.

In the embodiment of the invention, a sensor is arranged on the fuel absorption steam pipeline, and the sensor arranged on the fuel absorption steam pipeline is used for controlling the connection or the closure of the fuel absorption steam pipeline, namely the connection or the closure of the fuel absorption steam pipeline is controlled by the sensor arranged on the fuel absorption steam pipeline; the fuel steam supply pipeline is provided with a sensor, the sensor arranged on the fuel steam supply pipeline is used for controlling the communication or the sealing of the fuel steam supply pipeline, namely the communication or the sealing of the fuel steam supply pipeline is controlled by the sensor arranged on the fuel steam supply pipeline, when the fuel steam pipeline is communicated, the brake vacuum pump can blow the fuel steam sucked from the fuel desorption pipeline into the engine, and when the fuel steam pipeline is sealed, the brake vacuum pump cannot blow the fuel steam sucked from the fuel desorption pipeline into the engine.

In the embodiment of the invention, the sensors on the absorption fuel steam pipeline and the supply fuel steam pipeline are electrically connected with an Electronic Control Unit (ECU) of the vehicle, and the sensors on the absorption fuel steam pipeline and the supply fuel steam pipeline are controlled based on the ECU, so that the connection or the closure of the absorption fuel steam pipeline and the connection or the closure of the supply fuel steam pipeline are realized.

When fuel steam desorption is required, the ECU controls sensors on the fuel steam absorption pipeline and the fuel steam supply pipeline so that the fuel steam absorption pipeline and the fuel steam supply pipeline are communicated, the brake vacuum pump can absorb the fuel steam in the fuel desorption pipeline, and the fuel steam absorbed by the brake vacuum pump from the fuel desorption pipeline can enter the engine to realize combustion; when fuel steam desorption is not needed, the ECU controls the sensors on the fuel steam absorption pipeline and the fuel steam supply pipeline so that the fuel steam absorption pipeline and the fuel steam supply pipeline are closed, and therefore fuel steam desorption is not achieved.

In the embodiment of the invention, the brake vacuum pump is also provided with a first pipeline which is connected with an air filtering air pipe of the vehicle to suck air into the air filtering air pipe, and a second pipeline which is connected with the outside of the vehicle to exhaust air to the outside of the vehicle. Through the first pipeline, the brake vacuum pump inhales from the air filtering air pipe to realize braking, and exhausts the gas sucked from the air filtering air pipe to the outside of the vehicle through the second pipeline. One end of the first pipeline is connected with the air filtering air pipe, the other end of the first pipeline is connected with the brake vacuum pump, one end of the second pipeline is connected with the brake vacuum pump, and the other end of the second pipeline is connected to the outside of the vehicle. The brake vacuum pump is also connected to the brake pedal of the vehicle. When a driver steps on a brake pedal, the brake vacuum pump actively absorbs air from the air filter air pipe, and vacuum pressure difference is formed inside the brake vacuum pump, so that braking is easier and lighter.

In the embodiment of the invention, the first pipeline is provided with the sensor, and the sensor arranged on the first pipeline is used for controlling the communication or the sealing of the first pipeline. And a sensor is arranged on the second pipeline, and the sensor arranged on the first pipeline is used for controlling the communication or the sealing of the second pipeline. The sensors on the first pipeline and the second pipeline are electrically connected with an ECU of the vehicle. The communication or the closed control of the first pipeline and the communication or the closed control of the second pipeline are realized through an ECU of a vehicle, when the first pipeline is communicated, the brake vacuum pump can suck air from the air filter air pipe through the first pipeline, and when the first pipeline is closed, the brake vacuum pump cannot suck air from the air filter air pipe through the first pipeline; when the second pipeline intercommunication, the brake vacuum pump can be given vent to anger to the car through the second pipeline, when the second pipeline seals, then the brake vacuum pump can't give vent to anger to the car through the second pipeline.

In the embodiment of the invention, when a brake pedal is stepped, the ECU controls the sensors on the first pipeline and the second pipeline so as to communicate the first pipeline and the second pipeline; when the brake pedal is not stepped on, the ECU controls the sensors on the first pipeline and the second pipeline so as to seal the first pipeline and the second pipeline.

When fuel steam desorption is required, the ECU controls the connection of the fuel steam absorption pipeline and the fuel steam supply pipeline; when braking is needed, the ECU controls the first pipeline and the second pipeline to be communicated; when fuel vapor desorption and braking are required at the same time, the ECU controls the fuel vapor absorption pipeline, the fuel vapor supply pipeline, the first pipeline and the second pipeline to be communicated. For the brake vacuum pump, the fuel steam desorption and the vehicle brake are realized in an independent and non-interfering state, namely the brake vacuum pump can realize the fuel steam desorption and the vehicle brake at the same time, and the fuel steam desorption and the vehicle brake are not interfered with each other, and the fuel steam desorption or the vehicle brake can be realized at the same time.

The active desorption device of the fuel system of the embodiment of the invention is characterized in that an absorption fuel steam pipeline is arranged between a brake vacuum pump and a fuel desorption pipeline of a vehicle to connect the brake vacuum pump and the fuel desorption pipeline of the vehicle, a fuel supply steam pipeline is arranged between the brake vacuum pump and an engine of the vehicle to connect the brake vacuum pump and the engine of the vehicle, when fuel steam desorption is carried out, the brake vacuum pump actively absorbs the fuel steam in the fuel desorption pipeline by absorbing the fuel steam pipeline and transmits the fuel steam actively absorbed from the fuel desorption pipeline to the engine by supplying the fuel steam pipeline, the existing brake vacuum pump in the vehicle is directly used to realize the fuel steam desorption, the fuel steam desorption cost is effectively saved, the manufacturing cost of the vehicle is reduced, and the existing brake vacuum pump of the vehicle is used for fuel steam desorption, the noise of the brake vacuum pump is low in work, and the driving experience of the vehicle is effectively guaranteed.

According to the automobile provided by the embodiment of the invention, the automobile comprises the fuel system active desorption device, and for the fuel system active desorption device contained in the automobile, the fuel system active desorption device comprises a fuel steam absorption pipeline and a fuel steam supply pipeline. The fuel vapor absorption pipeline is positioned between a brake vacuum pump and a fuel desorption pipeline of the vehicle and connects the brake vacuum pump and the fuel desorption pipeline of the vehicle. The fuel vapor supply line is located between and connects the brake vacuum pump and the engine of the vehicle. The brake vacuum pump actively absorbs the fuel steam in the fuel desorption pipeline through the absorption fuel steam pipeline and conveys the fuel steam actively absorbed from the fuel desorption pipeline to the engine through the supply fuel steam pipeline.

In the embodiment of the invention, one end of the fuel vapor absorption pipeline is connected with a brake vacuum pump of a vehicle, and the other end of the fuel vapor absorption pipeline is connected with a fuel desorption pipeline of the vehicle; one end of the fuel vapor supply pipeline is connected with a brake vacuum pump of the vehicle, and the other end of the fuel vapor supply pipeline is connected with an engine of the vehicle. A sensor is arranged on the fuel oil absorption steam pipeline and used for controlling the communication or the sealing of the fuel oil absorption steam pipeline; and a sensor is arranged on the fuel supply steam pipeline and used for controlling the communication or the closure of the fuel supply steam pipeline.

In the embodiment of the invention, the sensors on the absorption fuel vapor pipeline and the supply fuel vapor pipeline are electrically connected with the ECU of the vehicle. When fuel steam desorption is required, the ECU controls sensors on the fuel steam absorption pipeline and the fuel steam supply pipeline so as to communicate the fuel steam absorption pipeline and the fuel steam supply pipeline; when fuel steam desorption is not needed, the ECU controls the sensors on the fuel steam absorption pipeline and the fuel steam supply pipeline so as to seal the fuel steam absorption pipeline and the fuel steam supply pipeline.

In the embodiment of the invention, the brake vacuum pump is also provided with a first pipeline which is connected with an air filtering air pipe of the vehicle to suck air into the air filtering air pipe, and a second pipeline which is connected with the outside of the vehicle to exhaust air to the outside of the vehicle. The brake vacuum pump is also connected to the brake pedal of the vehicle. A sensor is arranged on the first pipeline and used for controlling the communication or the sealing of the first pipeline; a sensor is arranged on the second pipeline, and the sensor arranged on the first pipeline is used for controlling the communication or the sealing of the second pipeline; the sensors on the first pipeline and the second pipeline are electrically connected with an ECU of the vehicle. When the brake pedal is stepped, the ECU controls the sensors on the first pipeline and the second pipeline so as to communicate the first pipeline and the second pipeline; when the brake pedal is not stepped on, the ECU controls the sensors on the first pipeline and the second pipeline so as to seal the first pipeline and the second pipeline.

The automobile of the embodiment of the invention is characterized in that the fuel steam absorption pipeline is arranged between the brake vacuum pump and the fuel desorption pipeline of the automobile to connect the brake vacuum pump and the fuel desorption pipeline of the automobile, the fuel steam supply pipeline is arranged between the brake vacuum pump and the engine of the automobile to connect the brake vacuum pump and the engine of the automobile, when fuel steam desorption is carried out, the brake vacuum pump actively absorbs the fuel steam in the fuel desorption pipeline by absorbing the fuel steam pipeline and transmits the fuel steam actively absorbed from the fuel desorption pipeline to the engine by supplying the fuel steam pipeline, the existing brake vacuum pump in the automobile is directly used to realize the fuel steam desorption, the fuel steam desorption cost is effectively saved, the manufacturing cost of the automobile is reduced, the existing brake vacuum pump of the automobile is used for fuel steam desorption, the noise of the brake vacuum pump in work is low, effectively guarantee the driving experience of vehicle.

In the description of the present application, 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 only for convenience in describing the present application 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 application. 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 meaning of the above terms in the present application can be understood by those of ordinary skill in the art as appropriate.

It is noted that, in the present application, 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 above description is merely exemplary of the present application and is presented to enable those skilled in the art to understand and practice the present application. 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 application. Thus, the present application 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.