Oil-gas hybrid vehicle independent oil-gas switching inspection equipment
Patent Information
- Application Number
- CN202521937685.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-09-09
- Publication Date
- 2026-10-23
- Estimated Expiration
- 2035-09-09
AI Technical Summary
[0006]本申请提供一种油气混动车独立油气切换检查设备，旨在解决现有技术中加气设备成本过大，而且将气站带到工厂也增大了管理和操作风险的问题
[0011]本申请技术方案，提出一种油气混动车独立油气切换检查设备，包括车架，车架上设置有燃气发动机、减压阀以及内置燃气瓶，内置燃气瓶连通减压阀，减压阀连通燃气发动机，还包括：外置燃气瓶；外气瓶阀门，外气瓶阀门设置于外置燃气瓶的端部；高压气管，高压气管的一端连通外气瓶阀门，高压气管的另一端连接减压阀。将进行油气切换检查时，关闭内置气瓶阀门，断开车体内部气路。减压阀连接外置燃气瓶后，打开减压阀和外气瓶阀门，通过外置燃气瓶为油气混动车供气，形成一个检查气路用于油气切换检查。通过外置储气瓶模拟燃气站加满燃气状态，工厂内实现油气切换检查，降低投资成本，并且有利于提升检查效率，降低检查过程中的安全风险。
Smart Images
Figure CN224888196U_ABST
Abstract
Description
Technical Field
[0001] This application relates to the technical field of oil-gas switching inspection equipment, and in particular to an independent oil-gas switching inspection equipment for hybrid vehicles. Background Technology
[0002] Hybrid vehicles are cars that can run on both gasoline and compressed natural gas (CNG). These cars typically have two fuel tanks and can be manually switched between fuels.
[0003] Currently, hybrid vehicles are typically switched and inspected after the vehicle is fully refueled. However, factories usually do not have gas, so vehicles need to be refueled at gas stations before inspections can be performed, which affects efficiency and poses safety risks.
[0004] The industry standard for inspection typically involves adding gas-related equipment to the factory, filling the gas cylinders, and then performing a switchover inspection. However, this approach is problematic because the production volume of hybrid vehicles in factories is low, making the investment in refueling equipment too costly. Furthermore, bringing a gas station to the factory increases management and operational risks.
[0005] Therefore, it is necessary to propose an independent oil-gas switching inspection device for hybrid vehicles to perform pneumatic inspections efficiently and at low cost, which has become an important technical problem that urgently needs to be solved. Utility Model Content
[0006] This application provides an independent oil-gas switching inspection device for hybrid vehicles, which aims to solve the problems of excessive cost of existing gas filling equipment and the increased management and operational risks of bringing gas stations to the factory.
[0007] To achieve the above objectives, this application proposes an independent oil-gas switching inspection device for hybrid vehicles, including a frame, on which a gas engine, a pressure reducing valve, and a built-in gas cylinder are mounted. The built-in gas cylinder is connected to the pressure reducing valve, and the pressure reducing valve is connected to the gas engine. The device also includes: an external gas cylinder; an external gas cylinder valve located at the end of the external gas cylinder; and a high-pressure gas pipe, one end of which is connected to the external gas cylinder valve, and the other end of which is connected to the pressure reducing valve.
[0008] In some embodiments, it further includes: a gas cylinder mounting base, on which an external gas cylinder is mounted.
[0009] In some embodiments, the device further includes: a clamp, which is provided on the gas cylinder mounting base and has an opening; and a connecting assembly, which connects the two open ends of the clamp.
[0010] In some embodiments, the connecting assembly includes: a connecting bolt, wherein both open ends of the clamp are provided with connecting holes for the connecting bolt to pass through; and a locking nut, wherein the connecting bolt is screwed onto the locking nut, and the outer diameter of the locking nut is larger than the outer diameter of the connecting hole.
[0011] This application proposes an independent fuel-gas switching inspection device for hybrid vehicles, including a chassis with a gas engine, a pressure reducing valve, and a built-in gas cylinder. The built-in gas cylinder is connected to the pressure reducing valve, which in turn is connected to the gas engine. The device also includes an external gas cylinder; an external gas cylinder valve located at the end of the external gas cylinder; and a high-pressure gas pipe, one end of which is connected to the external gas cylinder valve, and the other end connected to the pressure reducing valve. During fuel-gas switching inspection, the built-in gas cylinder valve is closed, disconnecting the internal gas circuit of the vehicle. After the pressure reducing valve is connected to the external gas cylinder, both the pressure reducing valve and the external gas cylinder valve are opened, supplying gas to the hybrid vehicle through the external gas cylinder, forming an inspection gas circuit for fuel-gas switching inspection. By simulating a fully fueled state at a gas station using an external gas cylinder, fuel-gas switching inspection can be performed in the factory, reducing investment costs, improving inspection efficiency, and reducing safety risks during the inspection process. Attached Figure Description
[0012] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort, wherein: Figure 1 This is a schematic diagram of the structure of an independent oil-gas switching inspection device for a hybrid vehicle according to one embodiment of this application; Figure 2 for Figure 1 Enlarged view of part B in the middle; Figure 3 for Figure 1 Cross-sectional view of section AA.
[0013] In the diagram: 1. Frame; 2. High-pressure steel pipe; 3. Built-in gas cylinder; 4. Built-in gas cylinder valve; 5. Gas cylinder mounting base; 6. Gas engine; 7. Hoop; 8. Connecting bolt; 9. Locking nut; 10. External gas cylinder; 11. External gas cylinder valve; 12. High-pressure gas pipe; 13. Pressure reducing valve. Detailed Implementation
[0014] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this application, and not all of the embodiments. Based on the embodiments of this application, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of this application.
[0015] See Figure 1 , Figure 2 and Figure 3As shown, this application proposes an independent oil-gas switching inspection device for a hybrid electric vehicle, including a frame 1, on which a gas engine 6, a pressure reducing valve 13, and a built-in gas cylinder 3 are mounted. The built-in gas cylinder 3 is connected to the pressure reducing valve 13, and the pressure reducing valve 13 is connected to the gas engine 6. The device also includes: an external gas cylinder 10; an external gas cylinder valve 11, which is located at the end of the external gas cylinder 10; and a high-pressure gas pipe 12, one end of which is connected to the external gas cylinder valve 11, and the other end of which is connected to the pressure reducing valve 13.
[0016] Hybrid vehicles are a mature existing technology, and since hybrid vehicles are not the focus of this application, their specific structure is not limited here. The built-in gas cylinder 3 is equipped with a built-in gas cylinder valve 4, which is connected to a high-pressure steel pipe 2. The high-pressure steel pipe 2 is connected to a pressure reducing valve 13. During normal gas operation, the pressure reducing valve 13 and the built-in gas cylinder valve 4 are open, supplying gas to the vehicle's internal gas circuit through the built-in gas cylinder 3. Due to a lack of refueling equipment in the factory, compressed natural gas (CNG) is not available in the built-in gas cylinder 3, preventing the hybrid vehicle from switching to pneumatic mode.
[0017] The external gas cylinder 10 is the core structure of an independent oil-gas switching inspection device for hybrid vehicles. During oil-gas switching checks, the internal gas cylinder valve 4 is closed, disconnecting the internal gas circuit of the vehicle. After the pressure reducing valve 13 is connected to the external gas cylinder 10, the pressure reducing valve 13 and the external gas cylinder valve 11 are opened, supplying gas to the hybrid vehicle through the external gas cylinder 10, forming an inspection gas circuit for oil-gas switching checks. The high-pressure gas pipe 12 connects the external gas cylinder valve 11 and the pressure reducing valve 13.
[0018] Specifically, during the oil-gas switchover check, the internal gas cylinder valve 4 is closed, disconnecting the internal gas circuit of the vehicle. After the pressure reducing valve 13 is connected to the external gas cylinder 10, the pressure reducing valve 13 and the external gas cylinder valve 11 are opened, supplying gas to the hybrid vehicle through the external gas cylinder 10, forming a check gas circuit for the oil-gas switchover check. By simulating a fully fueled state at a gas station using an external gas cylinder, the oil-gas switchover check can be performed within the factory, reducing investment costs and improving inspection efficiency while minimizing safety risks during the inspection process.
[0019] In detail, the oil-gas switching inspection process includes the following steps: 1.1 Park the vehicle in the CNG vehicle start-up and switching test area; 1.2. Turn off the engine and apply the parking brake. Open the engine hood and confirm that both the external gas cylinder valve 11 and the internal gas cylinder valve 4 are closed. 1.3 Confirm that there are no impurities at the connection pipe joints and that the sealing rings are not damaged. Remove the dust plug from the pressure reducing valve 13 in the engine room and connect the pressure reducing valve 13 and the external gas cylinder valve 11 with the high-pressure air hose 12. 1.4 Slowly open the external gas cylinder valve 11, and then slowly open the cabin pressure reducing valve 13 to fill the cylinder with gas. Confirm that the pressure gauge on the gas valve is above 3MPa. 1.5 After the vehicle is powered on, observe whether the gas switch is in gas mode, confirm whether the pressure value displayed by the gas switch is consistent with the pressure value on the pressure gauge, and then use a leak detector to check whether there is a leak at the high-pressure airtightness check point of the pressure reducing valve 13 in the engine compartment. When using the leak detector, ensure that it is placed at the check point for more than 12 seconds. 1.6 After the above steps are completed normally, confirm whether it can start normally in "gas mode" and whether the idle speed is stable (the speed is maintained between 800 and 1000 rpm). 1.7 After starting the vehicle, press the CAERI button on the gas switch to switch between "gas mode" and "fuel mode" three times to confirm that the "gas mode" and "fuel mode" can be switched normally. At the same time, confirm that the "gas mode" and "fuel mode" on the gas volume LCD display switch are displayed correctly. 1.8 Use a gas leak detector to check for leaks at pipe joints. Detect leaks by listening for or hearing a beeping sound. Low-pressure sections can only be checked for leaks when the vehicle is running (in gas mode). When using the leak detector, ensure it is held at the inspection point for at least 12 seconds. 1.9 After confirming there is no leakage, close the external gas cylinder valve 11, keep the vehicle running and wait for the gas to burn out (the pressure gauge pointer is 0 and the gas switch automatically switches to fuel mode), then close the engine compartment pressure relief valve 13, disconnect the high-pressure gas hose 12, put the dust plug back in place, and close the engine hood.
[0020] in, See Figure 1 and Figure 2 As shown, in some embodiments, it further includes: a gas cylinder mounting base 5, on which the external gas cylinder 10 is mounted. The external gas cylinder 10 is mounted on the gas cylinder mounting base 5 to improve its stability.
[0021] In this embodiment, a leak detector is fixedly installed on the gas cylinder mounting base 5 near the external gas cylinder valve 11 to detect whether there is a leak in the external gas cylinder valve 11 in real time. The gas cylinder mounting base 5 is also equipped with an alarm connected to the leak detector, which will sound an alarm when a leak occurs in the external gas cylinder valve 11. Preferably, a protective cover for the external gas cylinder valve 11 is welded to the gas cylinder mounting base 5 near the external gas cylinder valve 11 to protect the external gas cylinder valve 11 and reduce the probability of the external gas cylinder valve 11 being accidentally opened.
[0022] See Figure 1 and Figure 2As shown, in some embodiments, the device further includes: a clamp 7, which is provided on the gas cylinder mounting base 5, and the clamp 7 has an opening; the clamp 7 is made of metal, and the external gas cylinder 10 can enter the clamp 7 from one side. A connecting assembly is provided, and the two open ends of the clamp 7 are connected by the connecting assembly. After the external gas cylinder 10 enters the clamp 7, the width of the opening is reduced by the connecting assembly, thereby tightening the clamp 7 around the external gas cylinder 10 and securely installing the external gas cylinder 10 onto the gas cylinder mounting base 5.
[0023] See Figure 1 and Figure 2 As shown, in some embodiments, the connecting assembly includes: a connecting bolt 8, and connecting holes for the connecting bolt 8 to pass through at both open ends of the clamp 7; a locking nut 9, which is screwed onto the connecting bolt 8, and the outer diameter of the locking nut 9 is larger than the outer diameter of the connecting hole. One end of the connecting bolt 8 abuts against one open end, and the other open end of the connecting bolt 8 is against the locking nut 9. During the tightening of the locking nut 9, the two open ends of the clamp 7 can be moved closer or further apart, thereby fixing or loosening the external gas cylinder 10.
[0024] The above description is only a part or preferred embodiment of this application. Neither the text nor the drawings should limit the scope of protection of this application. All equivalent structural transformations made using the content of this application's specification and drawings under the overall concept of this application, or direct / indirect applications in other related technical fields, are included within the scope of protection of this application.
Claims
1. An independent oil-gas switching inspection device for a hybrid electric vehicle, comprising a frame (1), wherein a gas engine (6), a pressure reducing valve (13), and a built-in gas cylinder (3) are mounted on the frame (1), the built-in gas cylinder (3) being connected to the pressure reducing valve (13), and the pressure reducing valve (13) being connected to the gas engine (6), characterized in that, Also includes: External gas cylinder (10); An external gas cylinder valve (11) is provided at the end of the external gas cylinder (10); A high-pressure gas pipe (12) is provided, one end of which is connected to the external gas cylinder valve (11), and the other end of which is connected to the pressure reducing valve (13).
2. The independent oil-gas switching inspection device for hybrid vehicles according to claim 1, characterized in that, Also includes: Gas cylinder mounting base (5), on which the external gas cylinder (10) is mounted.
3. The independent oil-gas switching inspection device for hybrid vehicles according to claim 2, characterized in that, Also includes: The hoop (7) is provided on the gas cylinder mounting base (5), and the hoop (7) is provided with an opening; The two open ends of the hoop (7) are connected by the connecting component.
4. The independent oil-gas switching inspection device for hybrid vehicles according to claim 3, characterized in that, The connection component includes: The connecting bolt (8) has connecting holes at both open ends of the hoop (7) for the connecting bolt (8) to pass through. A locking nut (9) is screwed onto the connecting bolt (8), and the outer diameter of the locking nut (9) is larger than the outer diameter of the connecting hole.