A new type of fuel leak diagnostic pump

Abstract

This utility model relates to the field of fuel leak diagnostic pump technology, and in particular to a novel fuel leak diagnostic pump, comprising vertical plates, with multiple fuel leak diagnostic pumps fixedly connected to the rear end faces of the vertical plates. Straight pipes are connected to the front and rear sides of the fuel leak diagnostic pump, and protective structures are connected to the outer ends of the straight pipes. Heat-conducting structures are connected to the slots on the left and right sides of the fuel leak diagnostic pump. A heating plate is energized to maintain heat at a specific temperature. Because the collar is made of copper, heat can be quickly transferred and distributed to the outer wall of the fuel leak diagnostic pump. Since the heating plate is a low-power heat source, and the thermal conductivity of copper is within a specific temperature range, the heat conducted by the collar is also within a specific temperature range. This prevents moisture from forming on the outer wall of the fuel leak diagnostic pump, thus preventing damage to the pump components from indirect moisture and ensuring the normal operation of the fuel leak diagnostic pump.

Description

Technical Field

[0001] This utility model relates to the field of new fuel leak diagnostic pump technology, specifically a new fuel leak diagnostic pump. Background Technology

[0002] Fuel leak diagnostic pumps are key components in automotive fuel systems used to detect fuel leaks, primarily in vehicles equipped with evaporative emission control systems (EVAP systems).

[0003] For example, a fuel leak diagnostic pump with authorization announcement number "CN223104672U" has a sealing disc connected to one end of a movable iron core. The coil is set in the inner cavity of the inner shell, and the movable iron core moves along the center hole of the coil. A limit bracket is mounted on the end face of the inner shell to restrict the movement of the sealing disc. This structure makes the air inlet and outlet control precise and the design reasonable and reliable. The spring solenoid valve and the air pump can be manufactured independently and then assembled, which greatly improves the assembly efficiency. However, in the use of the fuel leak diagnostic pump, the heating element is only installed on the air pump and cannot cover other areas of the shell. In a high humidity environment, water vapor may still condense on other parts, indirectly affecting the fuel leak diagnostic pump components and affecting the normal use of the fuel leak diagnostic pump. Utility Model Content

[0004] The purpose of this invention is to solve the problem of damage to components of a fuel leak diagnostic pump that indirectly affects the normal use of the fuel leak diagnostic pump, and to propose a new type of fuel leak diagnostic pump.

[0005] To achieve the above objectives, this utility model provides the following technical solution: A novel fuel leak diagnostic pump is designed, comprising vertical plates, with a fuel leak diagnostic pump fixedly connected to the rear end face of multiple vertical plates. Straight pipes are connected to the front and rear sides of the fuel leak diagnostic pump, and a protective structure is connected to the outer end of the straight pipe. Heat-conducting structures are connected to the slots on the left and right sides of the fuel leak diagnostic pump.

[0006] Preferably, the heat-conducting structure includes a heating plate and a collar. The outer walls of the two heating plates are respectively inserted into the slots on the left and right sides of the fuel leak diagnostic pump. The outer walls of the heating plates are fixedly connected to the inner walls of multiple collars. Multiple round rods are fixedly connected to the outer walls of the multiple collars respectively. A bent plate is fixedly connected to the front of the front collar.

[0007] Preferably, the outer wall of the curved plate is in contact with the front of the vertical plate.

[0008] Preferably, the inner walls of the plurality of collars are all in contact with the outer wall of the fuel leak diagnostic pump.

[0009] Preferably, the protective structure includes flanges and sleeves, the inner walls of the two flanges are respectively fixed to the outer wall ends of the two straight pipes, the outer wall of the flanges is fixed to the outer wall circular opening of the sleeve, and a plug is fixed to the outer wall of the sleeve.

[0010] Preferably, the outer wall of the plug is inserted into the inner wall of the straight tube.

[0011] Preferably, an air tube is inserted into the inner wall of the straight tube.

[0012] This utility model proposes a novel fuel leak diagnostic pump, which has the following advantages: The heating plate is connected to the vehicle's power supply via a wire in the heat-conducting structure, allowing the heating plate to operate and maintaining a temperature of [temperature value missing]. Because the collar is made of copper, heat can be quickly transferred and distributed to the outer wall of the fuel leak diagnostic pump. Since the heating plate is a low-power heat source, the thermal conductivity of copper contributes to the temperature difference [temperature value missing]. The heat dissipated by the collar at [temperature value missing] prevents moisture from forming on the outer wall of the fuel leak diagnostic pump, thus preventing damage to the pump components and ensuring its normal operation. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the structure of this utility model; Figure 2 for Figure 1 Schematic diagram of the connection structure of the middle collar; Figure 3 for Figure 1 A schematic diagram of the structure of A in the middle; Figure 4 for Figure 1 Schematic diagram of the connection relationship between the middle flange, sleeve plate and plug; Figure 5 The figure shows a structural schematic diagram of the straight pipe and flange of this utility model.

[0014] In the diagram: 1. Vertical plate, 2. Heat-conducting structure, 201. Heating plate, 202. Collar, 203. Bend plate, 204. Round rod, 3. Protective structure, 301. Flange, 302. Sleeve plate, 303. Plug, 4. Fuel leak diagnostic pump, 5. Straight pipe, 6. Gas pipe. Detailed Implementation

[0015] The present invention will be further described below with reference to the accompanying drawings: Please see Figure 1-5In this embodiment, a novel fuel leak diagnostic pump includes a vertical plate 1, and a fuel leak diagnostic pump 4 is fixedly connected to the rear end face of multiple vertical plates 1. The model of the fuel leak diagnostic pump 4 is 710-906c. Straight pipes 5 are connected to the front and rear sides of the fuel leak diagnostic pump 4, and a protective structure 3 is connected to the outer end of the straight pipe 5. Heat-conducting structures 2 are connected to the slots on the left and right sides of the fuel leak diagnostic pump 4.

[0016] The heat-conducting structure 2 includes a heating plate 201 and a collar 202. The outer walls of the two heating plates 201 are respectively inserted into the slots on the left and right sides of the fuel leak diagnostic pump 4. The outer walls of the heating plates 201 are fixed to the inner walls of multiple collars 202. The collars 202 are made of copper. Multiple round rods 204 are fixed to the outer walls of the multiple collars 202. The round rods 204 support the collars 202. A bent plate 203 is fixed to the front of the front collar 202. The front of the bent plate 203 is threaded to the front of the vertical plate 1 by bolts. The outer wall of the bent plate 203 is in contact with the front of the vertical plate 1. The inner walls of the multiple collars 202 are all in contact with the outer walls of the fuel leak diagnostic pump 4. The heating plate 201 is powered on by connecting the wire in front of the heating plate 201 through the heat conduction structure 2, and the heating plate 201 is powered on to maintain the heat at 25 degrees Celsius. Since the collar 202 is made of copper, it can quickly transfer heat and distribute the heat to the outer wall of the fuel leak diagnostic pump 4. Because the heating plate 201 is a low-power heat source, and the thermal conductivity of copper is within a 5-degree Celsius range, the heat conducted by the collar 202 is within a 20-degree Celsius range. This prevents water vapor from forming on the outer wall of the fuel leak diagnostic pump 4, preventing water vapor from indirectly damaging the fuel leak diagnostic pump components and ensuring the normal operation of the fuel leak diagnostic pump.

[0017] The protective structure 3 includes flanges 301 and sleeves 302. The inner walls of the two flanges 301 are fixedly connected to the outer ends of the two straight pipes 5 respectively. The outer walls of the flanges 301 are fixedly connected to the outer round opening of the sleeve 302. The sleeve 302 is made of rubber and can be bent. A plug 303 is fixedly connected to the outer wall of the sleeve 302. The plug 303 is made of rubber. The outer wall of the plug 303 is inserted into the inner wall of the straight pipe 5. An air pipe 6 is inserted into the inner wall of the straight pipe 5.

[0018] Working principle: Fuel leak diagnostic pump installation: Pull the sleeve 302 outwards. At this time, the sleeve 302, along with the plug 303, disengages from the inner wall of the straight pipe 5. Then, the ends of the air inlet pipe and the air outlet pipe are respectively inserted into the inner walls of the two straight pipes 5 until the flange at the end of the air pipe is fitted with the flange 301 at the end of the outer wall of the straight pipe 5. Then, the bolts are threadedly connected to the air pipe flange and the flange at the end of the outer wall of the straight pipe 5 to complete the installation of the fuel leak diagnostic pump.

[0019] At the same time, the car ECU supplies power to the diagnostic pump through the socket and sends a command to start the testing process. The initial state of the spring solenoid valve is: under the action of the spring force, the sealing disc abuts against the limiting protrusion of the limiting bracket, closes the air outlet pipe, and blocks the air flow.

[0020] Fuel leak diagnostic pump heat conduction operation: Connect the wire in front of the heating plate 201 to the car's power supply, and the heating plate 201 will be powered on and operate, maintaining the heat at 25 degrees Celsius. Since the collar 202 is made of copper, it can quickly transfer heat and distribute the heat to the outer wall of the fuel leak diagnostic pump 4. Because the heating plate 201 is a low-power heat source, and the thermal conductivity of copper is within a 5-degree Celsius range, the heat conducted by the collar 202 is within a 20-degree Celsius range, which can prevent water vapor from forming on the outer wall of the fuel leak diagnostic pump 4.

[0021] Repair of fuel leak diagnostic pump heat conduction structure: Rotate the bolt forward through the bend plate 203, causing the rear of the bolt's outer wall to disengage from the front circular opening of the vertical plate 1. Then pull the bend plate 203 forward, causing it to move forward along with multiple collars 202 and the round rod 204, disengaging from the outer wall of the fuel leak diagnostic pump 4. Next, place a new collar 202 onto the outer wall of the fuel leak diagnostic pump 4 from front to back until the outer wall of the bend plate 203 is in contact with the front of the vertical plate 1. Then, thread the bolt from right front to back through the bend plate 203 and thread it into the front circular opening of the vertical plate 1, completing the replacement of the collar 202. Finally, repair the disassembled collar 202 and heating plate 201.

[0022] Although the present invention has been illustrated and described with reference to preferred embodiments, those skilled in the art should understand that various changes in form and detail are possible within the scope of the claims.

Claims

1. A novel fuel leak diagnostic pump, comprising a vertical plate (1), characterized in that: A fuel leak diagnostic pump (4) is fixedly connected to the rear end face of each of the vertical plates (1). A straight pipe (5) is connected to the front and rear sides of the fuel leak diagnostic pump (4). A protective structure (3) is connected to the outer end of the straight pipe (5). A heat-conducting structure (2) is connected to the slots on the left and right sides of the fuel leak diagnostic pump (4).

2. The novel fuel leak diagnostic pump according to claim 1, characterized in that: The heat-conducting structure (2) includes a heating plate (201) and a collar (202). The outer walls of the two heating plates (201) are respectively inserted into the left and right side slots of the fuel leak diagnostic pump (4). The outer walls of the heating plates (201) are fixed to the inner walls of multiple collars (202). Multiple round rods (204) are fixed to the outer walls of the multiple collars (202). A bent plate (203) is fixed to the front of the collar (202).

3. The novel fuel leak diagnostic pump according to claim 2, characterized in that: The outer wall of the curved plate (203) is in contact with the front of the vertical plate (1).

4. The novel fuel leak diagnostic pump according to claim 2, characterized in that: The inner walls of the multiple collars (202) are all in contact with the outer wall of the fuel leak diagnostic pump (4).

5. The novel fuel leak diagnostic pump according to claim 1, characterized in that: The protective structure (3) includes a flange (301) and a sleeve (302). The inner walls of the two flanges (301) are respectively fixed to the outer wall ends of the two straight pipes (5). The outer wall of the flange (301) is fixed to the outer wall of the sleeve (302). A plug (303) is fixed to the outer wall of the sleeve (302).

6. The novel fuel leak diagnostic pump according to claim 5, characterized in that: The outer wall of the plug (303) is inserted into the inner wall of the straight pipe (5).

7. The novel fuel leak diagnostic pump according to claim 1, characterized in that: An air tube (6) is inserted into the inner wall of the straight tube (5).

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