Multifunctional integrated oil quantity sensor

Abstract

The utility model relates to the technical field of fuel sensors, in particular to a multifunctional integrated fuel quantity sensor. The multifunctional integrated oil quantity sensor comprises a mounting head, and an engine oil suction channel, an engine oil return channel, an auxiliary oil suction channel and an auxiliary oil return channel are arranged in the mounting head. An engine oil suction connector, an engine oil return connector, an auxiliary oil suction connector and an auxiliary oil return connector are connected to the positions, at channel openings in one ends of the engine oil suction channel, the engine oil return channel, the auxiliary oil suction channel and the auxiliary oil return channel, of the installation head respectively. And the bottom of the mounting head is connected with an engine oil suction pipe, an engine oil return pipe, an auxiliary oil suction pipe and an auxiliary oil return pipe which are correspondingly communicated with the engine oil suction channel, the engine oil return channel, the auxiliary oil suction channel and the auxiliary oil return channel respectively. Oil supply and oil return to other oil-consuming equipment can be realized through the auxiliary oil suction pipe and the auxiliary oil return pipe, and redundant fuel oil can flow back to the fuel tank, so that fuel oil waste is avoided.

Description

Technical Field

[0001] This utility model relates to the field of fuel sensor technology, and in particular to a multifunctional integrated fuel level sensor. Background Technology

[0002] Fuel level sensors monitor a vehicle's fuel level, helping drivers understand the amount of fuel in the tank and refuel in time to avoid affecting vehicle operation due to insufficient fuel. Traditional fuel level sensors only have a fuel level monitoring function and have a relatively simple structure. Multiple fuel pans need to be distributed across the fuel tank to perform other functions, increasing manufacturing difficulty and sealing risks. Furthermore, the scattered placement of multiple fuel pans above the fuel tank results in messy piping connections and poor aesthetics. In addition, traditional fuel level sensors do not have fuel heating functionality, and in low-temperature environments, fuel is prone to waxing, making the fuel level readings of the sensor prone to inaccurate.

[0003] Chinese utility model patent CN219084158U discloses an integrated fuel level sensor with heating function. This sensor includes a mounting flange, a suction pipe, a return pipe, a data pipe, and an auxiliary fuel sampling pipe, all fixed together by the mounting flange. The suction pipe is connected to a suction pipe connector, the return pipe to a return pipe connector, and the auxiliary fuel sampling pipe to an auxiliary fuel sampling port plug. A wiring harness extends from the data pipe and connects to a sensor connector, wrapped in a black PVC sheath. A PTC heating element is located at the lower end of the suction pipe to heat the fuel entering the suction pipe. In application, the mounting flange is fixed to the fuel tank with screws and sealed with a gasket. This design enables multiple functions, including fuel level monitoring, engine fuel supply, engine fuel return, auxiliary fuel supply, and fuel heating.

[0004] The aforementioned integrated fuel heating and quantity sensor incorporates an auxiliary fuel tap. When not drawing fuel, the auxiliary tap can be sealed with a plug. When fuel is needed, the plug can be removed to supply fuel to other fuel-consuming devices, thus solving their energy supply problem. These other devices could be independent cab heating systems, parking heaters, or others. However, this integrated fuel heating and quantity sensor only considers auxiliary fuel supply to other devices and does not address auxiliary fuel return. When the amount of fuel flowing to a fuel-consuming device exceeds its requirement, the excess fuel cannot return to the fuel tank, resulting in unnecessary fuel waste. Utility Model Content

[0005] The purpose of this invention is to provide a multifunctional integrated fuel level sensor to solve the problem that excess fuel cannot flow back to the fuel tank when existing integrated fuel level sensors provide auxiliary fuel supply to other fuel-consuming equipment, resulting in unnecessary fuel waste.

[0006] The present invention adopts the following technical solution:

[0007] A multifunctional integrated fuel level sensor includes a mounting head. The mounting head has an engine fuel suction channel, an engine fuel return channel, an auxiliary fuel suction channel, and an auxiliary fuel return channel. An engine fuel suction connector, an engine fuel return connector, an auxiliary fuel suction connector, and an auxiliary fuel return connector are respectively connected to one end of each of the engine fuel suction channel, engine fuel return channel, auxiliary fuel suction channel, and auxiliary fuel return channel. The bottom of the mounting head is connected to an engine fuel suction pipe, an engine fuel return pipe, an auxiliary fuel suction pipe, and an auxiliary fuel return pipe, which are respectively connected to the engine fuel suction channel, engine fuel return channel, auxiliary fuel suction channel, and auxiliary fuel return channel.

[0008] Furthermore, the ends of the auxiliary oil return channel and the engine oil return channel merge into a combined oil return channel. The auxiliary oil return pipe and the engine oil return pipe share a single oil return pipe, and this oil return pipe is connected to the combined oil return channel.

[0009] Furthermore, the engine oil suction connector and engine oil suction channel, the engine oil return connector and engine oil return channel, the auxiliary oil suction connector and auxiliary oil suction channel, and the auxiliary oil return connector and auxiliary oil return channel are all connected by quick-connect or threaded connection.

[0010] Furthermore, the mounting head is equipped with a connector mounting interface, where an electronic connector is installed. An electron tube is connected to the bottom of the mounting head, and the wire harness is led out from the electron tube and connected to the electronic connector.

[0011] Furthermore, a float is installed on the electron tube to monitor the fuel level in the fuel tank.

[0012] Furthermore, the mounting head is equipped with a venting interface, and a venting valve is connected to the venting interface to balance the pressure difference between the inside and outside of the fuel tank.

[0013] Furthermore, the interfaces of the vent valve, engine oil suction connector, engine oil return connector, auxiliary oil suction connector, and auxiliary oil return connector are oriented in the same direction.

[0014] Furthermore, heating elements are installed in the engine oil suction pipe and the auxiliary oil suction pipe respectively.

[0015] Furthermore, a filter structure is installed below the engine oil suction pipe and the auxiliary oil suction pipe to filter the fuel before it is drawn in.

[0016] Furthermore, the bottom of the mounting head is provided with a toothed ring, which is used to cooperate with the mounting port on the fuel tank to achieve a snap-fit ​​installation between the fuel level sensor and the fuel tank.

[0017] Beneficial effects: This utility model is a pioneering invention. The engine oil suction connector and engine oil return connector are used to connect to the engine, enabling oil supply to and return to the engine via the engine oil suction pipe and engine oil return pipe. The auxiliary oil suction connector and auxiliary oil return connector are used to connect to other oil-using equipment, enabling oil supply to and return to other oil-using equipment via the auxiliary oil suction pipe and auxiliary oil return pipe. Excess fuel can flow back to the fuel tank, thus avoiding fuel waste. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the overall structure of the multifunctional integrated fuel level sensor of this utility model.

[0019] Figure 2 This is a schematic diagram of the multifunctional integrated fuel level sensor of this utility model from another perspective.

[0020] Figure 3 This is the front view of the mounting head;

[0021] Figure 4 This is a top view of the mounting head;

[0022] In the diagram: 1. Electronic connector; 2. Mounting head; 3. Engine oil suction pipe; 4. Electron tube; 5. Float; 6. Auxiliary oil suction pipe; 7. Filter structure; 8. Vent valve; 9. Engine oil return connector; 10. Auxiliary oil suction connector; 11. Engine oil suction connector; 12. Auxiliary oil return connector; 13. Oil return pipe; 14. Connector mounting interface; 15. Vent interface; 16. Engine oil return connector interface; 17. Auxiliary oil suction connector interface; 18. Auxiliary oil return connector interface; 19. Engine oil suction connector interface; 20. Toothed ring. Detailed Implementation

[0023] This invention primarily addresses the problem of excess fuel not returning to the fuel tank when existing integrated fuel level sensors provide auxiliary fuel supply to other fuel-consuming equipment, resulting in unnecessary fuel waste. The basic inventive concept is to configure an auxiliary fuel suction pipe along with an auxiliary fuel return pipe, enabling excess fuel to return to the fuel tank and thus preventing fuel waste.

[0024] Based on the above inventive concept, the embodiments of this utility model are described in detail below.

[0025] like Figure 1-2 As shown, the multifunctional integrated fuel level sensor of this utility model includes a mounting head 2, which contains an engine fuel suction channel, an engine fuel return channel, an auxiliary fuel suction channel, and an auxiliary fuel return channel. Figure 3-4As shown, one end of the engine oil suction channel, engine oil return channel, auxiliary oil suction channel, and auxiliary oil return channel extends to the outer surface of the mounting head 2, forming the engine oil suction connector interface 19, engine oil return connector interface 16, auxiliary oil suction connector interface 17, and auxiliary oil return connector interface 18, respectively. The other end of the channel extends to the bottom of the mounting head 2. Figure 1-2 As shown, the mounting head 2 has an engine oil suction connector 11, an engine oil return connector 9, an auxiliary oil suction connector 10, and an auxiliary oil return connector 12 connected to the corresponding engine oil suction connector interface 19, engine oil return connector interface 16, auxiliary oil suction connector interface 17, and auxiliary oil return connector interface 18, respectively. The bottom of the mounting head 2 is connected to an engine oil suction pipe 3, an auxiliary oil suction pipe 6, and an oil return pipe 13. The engine oil suction pipe 3 is connected to the engine oil suction channel, the auxiliary oil suction pipe 6 is connected to the auxiliary oil suction channel, and the oil return pipe 13 is connected to the engine oil return channel and the auxiliary oil return channel.

[0026] In this embodiment, the auxiliary return oil pipe and the engine return oil pipe share a single return oil pipe 13. Inside the mounting head 2, the ends of the auxiliary return oil channel and the engine return oil channel are merged into a single combined return oil channel. This shared return oil pipe 13 is connected to the combined return oil channel. This achieves both auxiliary and engine return oil functionality while saving one return oil pipe, eliminating one return oil pipe connection point on the mounting head 2, and reducing one sealing and fitting consideration, thus simplifying the overall sensor structure and reducing costs. Of course, in other embodiments, the ends of the auxiliary return oil channel and the engine return oil channel may not merge; the auxiliary return oil pipe and the engine return oil pipe can be two independent pipes, each connected to the corresponding auxiliary return oil channel and engine return oil channel.

[0027] The engine oil suction connector interface 19, engine oil return connector interface 16, auxiliary oil suction connector interface 17, and auxiliary oil return connector interface 18 are all equipped with internal threads, which are used for threaded connection with the engine oil suction connector 11, engine oil return connector 9, auxiliary oil suction connector 10, and auxiliary oil return connector 12, respectively, allowing for quick and convenient connection. Alternatively, the engine oil suction connector 11 can be connected to the engine oil suction connector interface 19, the engine oil return connector 9 to the engine oil return connector interface 16, the auxiliary oil suction connector 10 to the auxiliary oil suction connector interface 17, and the auxiliary oil return connector 12 to the auxiliary oil return connector interface 18 using a quick-connect method. The specific connection method can be flexibly selected to adapt to various vehicle requirements. In other embodiments, each connector and its corresponding channel can also be fixedly connected by welding.

[0028] Engine oil suction connector 19, engine oil return connector 16, auxiliary oil suction connector 17, and auxiliary oil return connector 18 are all located on the same outer surface of mounting head 2. On another outer surface adjacent to this outer surface, mounting head 2 has a connector mounting interface 14. An electronic connector 1 is installed at connector mounting interface 14. An electronic tube 4 is connected to the bottom of mounting head 2, and a wiring harness is led out from the electronic tube 4 and connected to the electronic connector 1. The electronic connector 1 is installed at connector mounting interface 14 without a wiring harness leading out; the vehicle end can directly connect to the electronic connector 1. A float 5 is installed on the electronic tube 4 to monitor the fuel level in the fuel tank.

[0029] The mounting head 2 is also equipped with a vent interface 15, and a vent valve 8 is connected to the vent interface 15 to balance the pressure difference inside and outside the fuel tank, ensuring smooth fuel supply and return. Figure 2 As shown, the interfaces of the vent valve 8, engine oil suction connector 11, engine oil return connector 9, auxiliary oil suction connector 10, and auxiliary oil return connector 12 are oriented in the same direction, ensuring consistent pipe routing after connection. This avoids messy pipe connections and improves the vehicle's aesthetics. Of course, in other embodiments, the interfaces of the engine oil suction connector 11, engine oil return connector 9, auxiliary oil suction connector 10, and auxiliary oil return connector 12 can also be oriented in the same direction, with the interface of the vent valve 8 forming a certain angle with the interfaces of these connectors, such as being perpendicular. Other variations in the orientation of the four connectors and the vent valve interface are also possible, and will not be listed here.

[0030] like Figure 1-2 As shown, a filter structure 7 is installed below the engine oil suction pipe 3 and the auxiliary oil suction pipe 6 to filter the fuel before it is suctioned. Heating elements, specifically PTC heating elements, are installed inside the engine oil suction pipe 3 and the auxiliary oil suction pipe 6. These heating elements can heat the fuel in the fuel tank in low-temperature environments, solving the problem of wax formation on low-temperature fuel.

[0031] A toothed ring 20 is provided at the bottom of the mounting head 2. The toothed ring 20 is used to mate with the mounting port on the fuel tank to achieve a snap-fit ​​installation between the fuel level sensor and the fuel tank. A sealing gasket is provided at the mounting port to ensure sealing performance. Simply align the toothed ring 20 with the mounting port on the fuel tank, insert it, and then tighten it to complete the installation. The operation is convenient. Of course, the mounting head and the fuel tank can also be connected by other methods, such as screw connection or threaded connection.

[0032] In application, the fuel level sensor of this invention is installed on the fuel tank. The engine fuel suction connector 11 and engine fuel return connector 9 are connected to the engine via pipelines, enabling fuel supply and return to the engine. The auxiliary fuel suction connector 10 and auxiliary fuel return connector 12 are connected to other fuel-using devices in the vehicle via pipelines, enabling fuel supply and return to these devices. Excess fuel can flow back to the fuel tank, thus avoiding fuel waste. This fuel level sensor integrates multiple functions, including fuel level monitoring, engine fuel supply, engine fuel return, auxiliary fuel supply, auxiliary fuel return, balancing the pressure difference inside and outside the fuel tank, and fuel heating. Its high integration reduces the number of fuel pans on the fuel tank, improves the fuel tank's aesthetics, and makes operation more convenient.

[0033] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. The patent protection scope of the present utility model shall be determined by the claims. Similarly, any equivalent structural changes made based on the description and drawings of the present utility model shall also be included within the protection scope of the present utility model.

Claims

1. A multifunctional integrated fuel level sensor, characterized in that: The device includes an installation head, which contains an engine oil suction channel, an engine oil return channel, an auxiliary oil suction channel, and an auxiliary oil return channel. At one end of each of the engine oil suction channel, engine oil return channel, auxiliary oil suction channel, and auxiliary oil return channel, an engine oil suction connector, an engine oil return connector, an auxiliary oil suction connector, and an auxiliary oil return connector are connected to the installation head. At the bottom of the installation head, an engine oil suction pipe, an engine oil return pipe, an auxiliary oil suction pipe, and an auxiliary oil return pipe are connected to the engine oil suction channel, engine oil return channel, auxiliary oil suction channel, and auxiliary oil return channel, respectively.

2. The multifunctional integrated fuel level sensor according to claim 1, characterized in that: The auxiliary oil return channel and the engine oil return channel merge into a combined oil return channel. The auxiliary oil return pipe and the engine oil return pipe share a single oil return pipe, and this oil return pipe is connected to the combined oil return channel.

3. The multifunctional integrated fuel level sensor according to claim 1, characterized in that: The engine oil suction connector and engine oil suction channel, the engine oil return connector and engine oil return channel, the auxiliary oil suction connector and auxiliary oil suction channel, and the auxiliary oil return connector and auxiliary oil return channel are all connected by quick-connect or threaded connection.

4. The multifunctional integrated fuel level sensor according to any one of claims 1-3, characterized in that: The mounting head is equipped with a connector mounting interface, where an electronic connector is installed. An electron tube is connected to the bottom of the mounting head, and the wire harness is led out from the electron tube and connected to the electronic connector.

5. The multifunctional integrated fuel level sensor according to claim 4, characterized in that: The electron tube is equipped with a float to monitor the fuel level in the fuel tank.

6. The multifunctional integrated fuel level sensor according to any one of claims 1-3, characterized in that: The mounting head is equipped with a venting interface, and a venting valve is connected to the venting interface to balance the pressure difference between the inside and outside of the fuel tank.

7. The multifunctional integrated fuel level sensor according to claim 6, characterized in that: The interfaces of the vent valve, engine oil suction connector, engine oil return connector, auxiliary oil suction connector, and auxiliary oil return connector are oriented in the same direction.

8. The multifunctional integrated fuel level sensor according to any one of claims 1-3, characterized in that: Heating elements are installed in the engine oil suction pipe and the auxiliary oil suction pipe respectively.

9. The multifunctional integrated fuel level sensor according to any one of claims 1-3, characterized in that: A filter structure is installed below the engine oil suction pipe and the auxiliary oil suction pipe to filter the fuel before it is drawn in.

10. The multifunctional integrated fuel level sensor according to any one of claims 1-3, characterized in that: The bottom of the mounting head is equipped with a toothed ring, which is used to cooperate with the mounting port on the fuel tank to achieve a snap-fit ​​installation between the fuel level sensor and the fuel tank.

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