CN214887408U

CN214887408U - Leakage monitoring device for motorcycle fuel evaporation system

Info

Publication number: CN214887408U
Application number: CN202121224133.9U
Authority: CN
Inventors: 罗先阳; 王贵富; 左支柳; 于涛
Original assignee: WUYANG-HONDA MOTORS (GUANGZHOU) CO LTD
Current assignee: WUYANG-HONDA MOTORS (GUANGZHOU) CO LTD
Priority date: 2021-06-02
Filing date: 2021-06-02
Publication date: 2021-11-26
Anticipated expiration: 2031-06-02

Abstract

The utility model provides a motorcycle fuel vaporization system leakage monitoring device, including oil tank and carbon tank, the carbon tank intussuseption is filled with the active carbon, be equipped with the steam adsorption hole on the carbon tank, desorption hole and atmosphere through-hole, the steam adsorption hole is connected with the oil tank, desorption hole and engine intake-tube connection, still include ECU, an oil mass detection device for measuring remaining oil mass in the oil tank, a pressure detection device for detecting fuel vaporization system pressure, a second control valve that is used for putting through or breaking off the first control valve of atmosphere through-hole and is used for putting through and breaking off the desorption hole, ECU respectively with oil mass detection device, a pressure detection device, first control valve and second control valve are connected. The utility model discloses can monitor the fuel evaporation leakage problem in the user use.

Description

Leakage monitoring device for motorcycle fuel evaporation system

Technical Field

The utility model belongs to the technical field of the oil tank detects, especially, relate to a motorcycle fuel vaporization system leakage monitoring device.

Background

Gasoline used in motorcycles contains harmful substances, which pollute the environment and harm the health of people if evaporated into the air. The problems of environmental pollution, personnel health and the like caused by the evaporative emission of fuel oil of motorcycles increasingly attract attention of people. In order to reduce the impact of fuel evaporation on the environment and promote related technical innovation, national environmental protection departments set and release national standards for fuel evaporation and continuously update the standards and the stringent required emission limits. The purpose is to reduce the harm of gasoline evaporation harmful substances to the environment and people. In the prior art, a pipeline of gasoline is sealed, evaporated oil gas is temporarily absorbed and stored by activated carbon, and finally oil gas evaporant discharged into the atmosphere meets the requirements of relevant national regulations. The existing motorcycle fuel evaporation system can ensure pipeline sealing in design, and products are subjected to spot inspection regularly to ensure that the pipeline sealing property meets the design requirements. But the problems of poor matching of all pipelines of the fuel evaporation system and the like are caused by production consistency and the like; and the problems of pipeline breakage, aging, leakage and the like can occur in the using process, so that fuel oil is evaporated into the atmosphere, and a leakage monitoring device of a motorcycle fuel oil evaporation system is required to be designed.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a motorcycle fuel vaporization system leakage monitoring device can monitor the fuel vaporization leakage problem in the user's use.

The utility model discloses a realize through following technical scheme:

the utility model provides a motorcycle fuel vaporization system leakage monitoring device, including oil tank and carbon tank, the carbon tank intussuseption is filled with the active carbon, be equipped with the steam adsorption hole on the carbon tank, desorption hole and atmosphere through-hole, the steam adsorption hole is connected with the oil tank, desorption hole and engine intake-tube connection, still include ECU, an oil mass detection device for measuring remaining oil mass in the oil tank, a pressure detection device for detecting fuel vaporization system pressure, a second control valve that is used for switch-on or disconnection atmosphere through-hole and is used for switch-on and disconnection desorption hole, ECU respectively with oil mass detection device, pressure detection device, first control valve and second control valve are connected.

Further, the pressure detection device is arranged on the oil tank.

Further, the pressure detection device is arranged on the carbon tank.

Furthermore, a residue placing hole is formed in the carbon tank, a collecting pipe is detachably arranged on the residue placing hole, and one end, far away from the residue placing hole, of the collecting pipe is sealed.

Further, the steam adsorption hole is connected with the oil tank through a first connecting pipe, the desorption hole is connected with a second control valve through a second connecting pipe, the second control valve is connected with an engine air inlet pipe through a third connecting pipe, the atmosphere through hole is connected with the first control valve through a fourth connecting pipe, the first control valve is connected with a fifth connecting pipe, and the pressure detection device is arranged on the first connecting pipe or on the second connecting pipe or on the fourth connecting pipe or on the collecting pipe.

Furthermore, the collecting pipe is a transparent plastic pipe.

Further, the device also comprises an alarm device, and the alarm device is connected with the ECU.

Further, the first control valve and the second control valve are both solenoid valves.

Compared with the prior art, the beneficial effects of the utility model are that: when the leakage monitoring condition is met, the first control valve and the second control valve are controlled to be closed simultaneously, the ECU measures the pressure in the fuel evaporation system and the fuel quantity in the fuel tank through the pressure detection device and the fuel quantity detection device, so that whether the fuel evaporation system leaks or not can be judged, the fuel evaporation leakage condition is monitored in real time, and the environment pollution caused by the fuel evaporation leakage is avoided; the pressure detection device can be flexibly installed at different positions of the fuel evaporation system, so that the installation problem is solved, and the performance is ensured.

Drawings

FIG. 1 is a block diagram of the leakage monitoring device of the motorcycle fuel evaporation system of the present invention according to the embodiment 1;

FIG. 2 is a schematic structural view of embodiment 1 of the leakage monitoring device of the motorcycle fuel evaporation system of the present invention;

FIG. 3 is a schematic structural view of embodiment 2 of the leakage monitoring device of the motorcycle fuel evaporation system of the present invention;

fig. 4 is the schematic structural diagram of embodiment 3 of the leakage monitoring device of the motorcycle fuel evaporation system of the present invention.

In the figure, 1-oil tank, 2-carbon tank, 3-engine, 4-ECU, 5-oil quantity detection device, 6-pressure detection device, 7-first control valve, 8-second control valve, 9-collecting pipe, 10-first connecting pipe, 11-second connecting pipe, 12-third connecting pipe, 13-fourth connecting pipe, 14-fifth connecting pipe.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the embodiments of the present invention will be clearly and completely described below with reference to the accompanying 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. The components of embodiments of the present invention, as generally described and illustrated in the figures herein, may be arranged and designed in a wide variety of different configurations.

Thus, the following detailed description of the embodiments of the present invention, presented in the accompanying drawings, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.

It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, it need not be further defined and explained in subsequent figures. Meanwhile, in the description of the present invention, the terms "first", "second", and the like are used only for distinguishing the description, and are not to be construed as indicating or implying relative importance.

It is noted that, herein, relational terms such as first and second, and the like may be 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.

In the description of the present invention, it should be noted that the terms "upper", "lower", "inner", "outer", and the like indicate the position or positional relationship based on the position or positional relationship shown in the drawings, or the position or positional relationship which is usually placed when the utility model is used, and are only for convenience of description and simplification of the description, but do not indicate or imply that the device or element to be referred must have a specific position, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention.

Referring to fig. 1 and 2, fig. 1 is a block diagram of an embodiment 1 of the leakage monitoring device of the motorcycle fuel evaporation system of the present invention, and fig. 2 is a schematic structural diagram of the embodiment 1 of the leakage monitoring device of the motorcycle fuel evaporation system of the present invention. The utility model provides a motorcycle fuel evaporation system leakage monitoring device, includes oil tank 1, carbon tank 2, ECU4, oil mass detection device 5, pressure measurement 6, first control valve 7 and second control valve 8, ECU4 is used for sending the action instruction to first control valve 7 and second control valve 8, and the data of receiving oil mass detection device 5 and pressure measurement 6 detection to judge whether the fuel evaporation system leaks.

Specifically, the fuel tank 1 is used for storing fuel, and the top of the fuel tank is provided with an evaporation bleed hole. Activated carbon is filled in the carbon tank 2, a steam adsorption hole, a desorption hole and an atmosphere through hole are formed in the carbon tank 2, the steam adsorption hole of the carbon tank 2 is connected with the evaporation discharge hole of the oil tank 1, and the desorption hole of the carbon tank 2 is connected with the air inlet pipe of the engine 3. The fuel amount detection device 5 is provided in the fuel tank 1 for measuring the amount of fuel remaining in the fuel tank 1. The pressure detection means 6 may employ a pressure sensor for detecting the fuel vaporization system pressure. The first control valve 7 is used for switching on or off the atmosphere through hole, thereby controlling the atmosphere through hole to be closed or to be communicated with the external atmosphere. The second control valve 8 is used for switching on or off the desorption hole, so that the desorption hole is controlled to be switched on or off with an air inlet pipe of the engine 3. Preferably, the first control valve 7 and the second control valve 8 are both solenoid valves.

The ECU4 is a main brain unit controlled by an electronic fuel injection system of the whole vehicle, the ECU4 is respectively connected with the fuel quantity detection device 5, the pressure detection device 6, the first control valve 7 and the second control valve 8 and is responsible for sending action commands to the first control valve 7 and the second control valve 8, and meanwhile, the ECU4 is responsible for collecting data of the fuel quantity detection device 5 and the pressure detection device 6, calculating the collected data and judging the leakage of an evaporated fuel system. Further, the utility model discloses motorcycle fuel vaporization system leakage monitoring device still includes alarm device, and alarm device is connected with ECU 4. When the ECU4 judges that the evaporated fuel system is leaking, a user is alerted to perform maintenance through an alarm device.

Further, in order to clean residual liquid accumulated in the carbon tank 2 conveniently, a residue placing hole is formed in the carbon tank 2, a collecting pipe 9 is detachably arranged on the residue placing hole, and one end, far away from the residue placing hole, of the collecting pipe 9 is sealed. The collecting pipe 9 can be used for storing residual liquid accumulated in the carbon tank 2, and the collecting pipe 9 can be manually cleaned regularly. Further, the collection tube 9 is a transparent plastic tube. The user can conveniently check the capacity of the residual liquid collected in the collecting pipe 9, so as to judge whether the residual liquid needs to be cleaned.

The pressure detection device 6 can be flexibly installed at different positions of the fuel evaporation system according to the characteristics of the built-in and exposed structure and the layout of the whole fuel tank 1. In embodiment 1, the pressure detection device 6 is provided on the fuel tank 1. The pressure detection device 6 can be arranged at different positions according to different structures of the fuel tank 1, but pressure measuring inlets of the pressure detection device 6 are higher than the fuel level. The pressure detection device 6 is arranged on the oil tank 1 and has the advantages of simple layout, low cost, reliable sealing and the like.

Please refer to fig. 3, fig. 3 is a schematic structural diagram of an embodiment 2 of the leakage monitoring device of the motorcycle fuel evaporation system of the present invention. In embodiment 2, the pressure detection means 6 is provided on the canister 2. The pressure detection device 6 is integrated on the carbon tank 2, can be arranged on two end faces or side faces of the carbon tank 2, and has the advantages of compact structure, low cost, reliable sealing and the like.

Please refer to fig. 4, fig. 4 is a schematic structural diagram of an embodiment 3 of the leakage monitoring device of the motorcycle fuel evaporation system of the present invention. In embodiment 3, the vapor adsorption hole is connected to the oil tank 1 through the first connection pipe 10, the desorption hole is connected to the second control valve 8 through the second connection pipe 11, the second control valve 8 is connected to the intake pipe of the engine 3 through the third connection pipe 12, the atmospheric through hole is connected to the first control valve 7 through the fourth connection pipe 13, the first control valve 7 is connected to the fifth connection pipe 14, the pressure detection device 6 is disposed on the first connection pipe 10 or on the second connection pipe 11 or on the fourth connection pipe 13 or on the collection pipe 9. This setting makes the 6 mountable positions of pressure measurement device more, simple structure and be convenient for dismouting and maintenance. The pressure detection device 6 can be connected in parallel or in series on the corresponding pipe through the connection mode of a three-way pipe or a straight-through pipe.

The mounting means of the pressure measurement device 6 of 3 above embodiments, the detection function and the effect of pressure measurement device 6 are verified through the experiment and are all equivalent, consequently the utility model discloses motorcycle fuel vaporization system leakage monitoring device can be according to the built-in of oil tank 1/expose, and whole car structure layout characteristics, can install pressure measurement device 6 integration on carbon tank 2 by the optimal mode, or arrange on oil tank 1, or arrange on first connecting pipe 10, or arrange on second connecting pipe 11, or arrange on fourth connecting pipe 13, or arrange on collecting pipe 9. And the pressure detection function has the same effect no matter the pressure detection device 6 is arranged at any position. Not only solves the installation problem but also ensures the performance.

The following simple explanation the utility model discloses motorcycle fuel vaporization system leak detection device's monitoring process:

when the operating state of the engine 3 satisfies the leak monitoring condition, the following four conditions are satisfied: (1) the vehicle battery voltage is within a certain set range; (2) a vehicle power switch ON state; (3) the pressure of the evaporation system is in a certain set range; (4) the oil quantity of the oil tank 1 is within a certain set range, and the liquid level variation amplitude in unit time is within a certain set range. ECU4 sends out monitoring instruction, first control valve 7 and second control valve 8 are closed simultaneously, seal the atmosphere through-hole and the desorption hole of carbon tank 2, the utility model discloses motorcycle fuel evaporation system leak detection device work in the leak detection mode, ECU4 measures fuel evaporation system internal pressure and the oil mass in oil tank 1 through pressure measurement device 6 and oil mass detection device 5, record the pressure value in a period of time, under certain oil mass and certain initial pressure condition of calculation, the pressure change rate segmentation statistics value, judge MAP table (this threshold value MAP table is associated with the oil mass that the oil mass sensor measures and evaporation system initial pressure, need mark in advance and give the calibration value) contrast with the threshold value and judge whether the evaporated fuel system has the leakage, thereby can real time monitoring fuel evaporation system leakage condition, if the fuel evaporation system leaks, ECU4 sends alarm instruction to alarm device, and reminding the user to maintain.

When the unsatisfied leakage monitoring condition of 3 operating conditions of engine, the utility model discloses motorcycle fuel vaporization system leakage monitoring device works in the desorption mode, and first control valve 7 and second control valve 8 are in not circular telegram normally open state, open carbon tank 2's atmosphere through-hole and desorption hole, and the negative pressure that produces in 3 intake pipe departments of engine when utilizing the operation of engine carries out the desorption, makes carbon tank 2 locate absorbent oil gas to be taken away by the suction, prevents that the oil gas of fuel evaporation from spilling over into the atmosphere and causing the pollution.

Compared with the prior art, the beneficial effects of the utility model are that: when the leakage monitoring condition is met, the first control valve 7 and the second control valve 8 are controlled to be closed simultaneously, and the ECU4 measures the pressure in the fuel evaporation system and the fuel quantity in the fuel tank 1 through the pressure detection device 6 and the fuel quantity detection device 5, so that whether the fuel evaporation system leaks can be judged, the fuel evaporation leakage condition can be monitored in real time, and the environment pollution caused by the fuel evaporation leakage is avoided; the pressure detection device 6 can be flexibly installed at different positions of the fuel evaporation system, so that the installation problem is solved, and the performance is ensured.

The above description is only a preferred embodiment of the present invention, and is not intended to limit the present invention in any form, so that any simple modification, equivalent change and modification made by the technical entity of the present invention to the above embodiments without departing from the technical solution of the present invention all fall within the scope of the technical solution of the present invention.

Claims

1. The utility model provides a motorcycle fuel vaporization system leakage monitoring device, includes oil tank and carbon tank, the carbon tank intussuseption is filled with the active carbon, be equipped with steam adsorption hole, desorption hole and atmosphere through-hole on the carbon tank, steam adsorption hole is connected with the oil tank, desorption hole and engine intake-tube connection, its characterized in that still includes ECU, the oil mass detection device who is used for measuring remaining oil mass in the oil tank, is used for detecting the pressure detection device of fuel vaporization system pressure, is used for the first control valve of switch-on or disconnection atmosphere through-hole and is used for switch-on and the second control valve in disconnection desorption hole, ECU is connected with oil mass detection device, pressure detection device, first control valve and second control valve respectively.

2. A motorcycle fuel evaporation system leak monitoring device as claimed in claim 1, wherein the pressure detection means is provided on the fuel tank.

3. A motorcycle fuel evaporation system leak monitoring device as claimed in claim 1, wherein the pressure detection means is provided on a canister.

4. A motorcycle fuel evaporation system leakage monitoring device as claimed in claim 1, wherein the canister is provided with a residue discharge hole, the residue discharge hole is detachably provided with a collecting pipe, and one end of the collecting pipe, which is far away from the residue discharge hole, is closed.

5. A motorcycle fuel evaporation system leakage monitoring device as claimed in claim 4, wherein the vapor adsorption hole is connected to a fuel tank through a first connecting pipe, the desorption hole is connected to a second control valve through a second connecting pipe, the second control valve is connected to an engine intake pipe through a third connecting pipe, the atmosphere through hole is connected to the first control valve through a fourth connecting pipe, the first control valve is connected to a fifth connecting pipe, and the pressure detection device is disposed on the first connecting pipe, or on the second connecting pipe, or on the fourth connecting pipe, or on the collecting pipe.

6. A motorcycle fuel evaporation system leak monitoring device as claimed in claim 4, wherein the collection tube is a transparent plastic tube.

7. A motorcycle fuel evaporation system leak monitoring device as claimed in claim 1, further comprising an alarm device connected to the ECU.

8. A motorcycle fuel evaporation system leak monitoring device as claimed in claim 1, wherein the first control valve and the second control valve are both solenoid valves.