A vehicle oil line air purging device for service
By designing a vehicle fuel system air purging device with components such as an electric oil suction pump and an oil collection can, the problem of time-consuming, labor-intensive, and incomplete fuel system air purging in existing technologies has been solved. This achieves automated and environmentally friendly fuel system air purging, improving operational efficiency and reducing fuel waste.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- JINCHUAN GROUP NICKEL COBALT CO LTD
- Filing Date
- 2025-09-22
- Publication Date
- 2026-07-24
AI Technical Summary
In existing technologies, the process of purging air from the vehicle's fuel system is time-consuming and labor-intensive, easily leading to fuel waste and environmental pollution. Furthermore, the process is often incomplete and requires repeated operations.
A vehicle fuel system air venting device was designed, comprising an electric fuel pump, a fuel collection container, a fuel suction pipe, a dust cover, and an adapter. The electric fuel pump provides power, and automatic venting is achieved through a one-way nozzle and a sealing structure. The fuel collection container collects fuel to prevent contamination.
It achieves automatic removal of air from the oil circuit without manual pressing, reducing fuel waste and environmental pollution, and making the venting process more thorough and improving operating efficiency.
Smart Images

Figure CN224550256U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of vehicle repair equipment technology, and in particular to a vehicle oil circuit air venting device for repair. Background Technology
[0002] With the increasing number of vehicles on the road, vehicles sometimes experience problems such as difficulty starting despite a normal starter motor, unstable engine speed after starting, or stalling. The most common cause of these problems is air entering the fuel system, leading to air bubbles in the fuel and an intermittent fuel supply. This results in starting difficulties, unstable engine speed, and stalling. In such cases, it's necessary to remove the air from the fuel system. Once the air is removed, the engine can start normally, and the problem is resolved. Therefore, purging air from the vehicle's fuel system has become an important issue in vehicle repair.
[0003] In the existing technical field, air purging from the vehicle's fuel system is mostly done by loosening the bleed screw on the fuel filter, pressing the fuel pump handle until the fuel is free of air bubbles, stopping the pump, and then tightening the bleed screw. This operation easily leads to fuel waste and environmental pollution. Furthermore, manual pressing is labor-intensive and time-consuming, and it doesn't completely remove air from the fuel, requiring repeated operations. Utility Model Content
[0004] To address the aforementioned technical problems, this utility model provides a vehicle oil circuit air purging device for maintenance.
[0005] To achieve the above objectives, the technical solution of this utility model is as follows:
[0006] A maintenance vehicle fuel line air purging device, comprising:
[0007] An electric oil suction pump has a battery on one side, which is connected to the power supply part of the electric oil suction pump.
[0008] An oil collection container is installed on the vent of the electric oil pump to prevent fuel from polluting the environment.
[0009] The oil suction pipe has its first end installed on the oil pipe connection hole of the electric oil suction pump, and its second end installed on the oil outlet end of the filter.
[0010] A sealing ring is provided on the oil pipe connection hole.
[0011] The second end of the oil suction pipe is installed on the oil outlet end of the filter via an adapter. The inlet end of the adapter is connected to the oil outlet end of the filter via a threaded connection. The side wall of the adapter is connected to the second end of the oil suction pipe via a one-way nozzle.
[0012] When the one-way nozzle is not connected to the second end of the oil suction pipe, a dust cover is installed on it.
[0013] The beneficial effects of this utility model are:
[0014] 1. This utility model consists of an electric oil suction pump, an oil collection container, a battery, an oil suction pipe, a dust cover, and an adapter. The battery is installed on the electric oil suction pump to provide power for the operation of the electric oil suction pump, eliminating the need for manual pressing.
[0015] 2. The one-way nozzle on the adapter can close automatically and can only open when it is closely connected to the second end of the oil pipe. It can be fixedly installed at the oil outlet of the diesel filter without disassembly. The one-way nozzle is equipped with a dust cover, which can effectively prevent dust from entering the one-way nozzle.
[0016] 3. The oil collection can is used to collect the fuel produced by the vent during the air purging process, thus avoiding waste and environmental pollution. Attached Figure Description
[0017] Figure 1 This is a schematic diagram of the structure of the electric oil suction pump of this utility model;
[0018] Figure 2 This is a schematic diagram of the oil suction pipe of this utility model;
[0019] Figure 3 This is a schematic diagram of the structure of the adapter of this utility model;
[0020] In the diagram, 1-battery; 2-electric oil pump; 3-vent; 4-oil collection container; 5-oil pipe connection hole; 6-sealing ring; 7-first end of oil suction pipe; 8-oil suction pipe; 9-second end of oil suction pipe; 10-adapter; 11-one-way oil nozzle; 12-threaded; 13-dust cover. Detailed Implementation
[0021] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to specific embodiments. It should be understood that these descriptions are merely exemplary and not intended to limit the scope of this utility model. Furthermore, descriptions of well-known structures and technologies are omitted in the following description to avoid unnecessarily obscuring the concept of this utility model.
[0022] like Figures 1 to 3As shown, a fuel system air purging device for maintenance vehicles includes: an electric fuel pump 2 with a battery 1 mounted on one side, the battery 1 being connected to the electrical components of the electric fuel pump 2; a fuel collection container 4, located on the vent 3 of the electric fuel pump 2 to prevent fuel pollution; and a fuel suction pipe 8, with its first end 7 installed on the fuel pipe connection hole 5 of the electric fuel pump 2, and its second end 9 installed on the oil outlet of the filter. A sealing ring 6 is provided on the fuel pipe connection hole 5. The second end 9 of the fuel suction pipe is installed on the oil outlet of the filter via an adapter 10. The inlet end of the adapter 10 is connected to the oil outlet of the filter via a threaded connection 12, and the side wall of the adapter 10 is connected to the second end 9 of the fuel suction pipe via a one-way nozzle 11. When not connected to the second end 9 of the fuel suction pipe, the one-way nozzle 11 is fitted with a dust cover 13.
[0023] In use, the first end 7 of the suction pipe is connected to the oil pipe connection hole 5, and the second end 9 of the suction pipe is connected to the adapter 10. The sealing ring 6 prevents air from entering the oil pipe and fuel leakage. The adapter 10 can be installed at the oil outlet of the vehicle's diesel (gasoline) oil filter via the thread 12. The second end 9 of the suction pipe can be closely connected to the one-way nozzle 11 on the adapter 10. The one-way nozzle 11 can close automatically and only opens when the second end 9 of the suction pipe is closely connected. The dust cover 13 is installed on the one-way nozzle 11 to effectively prevent dust from entering the one-way nozzle 11. The oil collection can 4 is used to collect the fuel generated by the vent during the air purging process, avoiding waste and environmental pollution. During vehicle maintenance, this invention can effectively remove air from the vehicle's fuel system, solving the problems of air entering the low-pressure fuel system, causing air bubbles in the fuel, intermittent fuel supply, difficulty starting the vehicle, unstable speed, and stalling. It is also easy to widely promote and use.
[0024] This utility model is designed for vehicles with an air purging device for the fuel system. It is applicable to all types of fuel vehicles and can effectively remove air from the fuel system. This solves the problems caused by air entering the low-pressure fuel system, resulting in air bubbles in the fuel, intermittent fuel supply, difficulty starting the vehicle, unstable speed, and stalling. It has certain economic and social benefits and solves the problems of difficulty in purging air from existing vehicles, time-consuming and laborious manual pressing, and the need for repeated operation.
[0025] It should be understood that the specific embodiments described above are merely illustrative or explanatory of the principles of this utility model and do not constitute a limitation thereof. Therefore, any modifications, equivalent substitutions, improvements, etc., made without departing from the spirit and scope of this utility model should be included within its protection scope. Furthermore, the appended claims are intended to cover all variations and modifications falling within the scope and boundaries of the appended claims, or equivalent forms of such scope and boundaries.
Claims
1. A fuel line air purging device for maintenance vehicles, characterized in that, include: An electric oil suction pump (2) is provided with a battery (1) on one side, and the battery (1) is connected to the power supply part of the electric oil suction pump (2); The oil collection container (4) is set on the vent (3) of the electric oil suction pump (2) to prevent fuel from polluting the environment; The oil suction pipe (8) has its first end (7) installed on the oil pipe connection hole (5) of the electric oil suction pump (2) and its second end (9) installed on the oil outlet end of the filter.
2. The air purging device for the fuel system of a maintenance vehicle according to claim 1, characterized in that, A sealing ring (6) is provided on the oil pipe connection hole (5).
3. The air purging device for the oil circuit of a maintenance vehicle according to claim 1, characterized in that, The second end (9) of the oil suction pipe is installed on the oil outlet end of the filter through an adapter (10). The inlet end of the adapter (10) is connected to the oil outlet end of the filter through a thread (12). The side wall of the adapter (10) is connected to the second end (9) of the oil suction pipe through a one-way nozzle (11).
4. The air purging device for the oil circuit of a maintenance vehicle according to claim 3, characterized in that: When the one-way nozzle (11) is not connected to the second end (9) of the oil suction pipe, a dust cover (13) is installed on it.