Air supply device and vehicle

By designing an air supply device, using a three-way valve and a pressure sensor to detect air pressure and adjust the air supply status, the emergency air supply problem of gas fuel vehicles when fuel is insufficient is solved, ensuring the normal operation of the vehicle and reducing the failure rate.

CN223410925UActive Publication Date: 2025-10-03SAIC GM WULING AUTOMOBILE CO LTD
View PDF 0 Cites 0 Cited by

Patent Information

Application Number
CN202422974105.9
Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
Filing Date
2024-12-03
Publication Date
2025-10-03
Estimated Expiration
2034-12-03

AI Technical Summary

Technical Problem

Existing gas fuel vehicles lack emergency gas supply devices when the gas tank is low on fuel, resulting in an inability to refuel in a timely manner, causing vehicle breakdowns or the need to wait for roadside assistance.

Method used

An air supply device is designed, which includes an air transmission part, a regulating part and an air supply unit. A three-way valve and a pressure sensor are used to detect the air pressure and adjust the air supply status of the first air supply part and the second air supply part to ensure that the air supply is switched to the second air supply part in time when the fuel is insufficient, thereby ensuring the normal operation of the vehicle.

Benefits of technology

It can supply gas to the vehicle in time when the gas tank is low on fuel, prevent malfunctions, reduce the power system failure rate caused by switching fuels, and ensure the normal operation of the vehicle in emergency situations.

✦ Generated by Eureka AI based on patent content.

Smart Images

  • Figure CN223410925U_ABST
    Figure CN223410925U_ABST
Patent Text Reader

Abstract

The utility model discloses a gas supply device and a vehicle, the gas supply device is used for providing gas fuel for the vehicle, and the gas supply device comprises a gas transmission part used for transmitting the gas fuel to the vehicle; the adjusting part is communicated with the gas conveying part; the air supply unit is used for supplying air to the air conveying part, the air supply unit comprises a first air supply part and a second air supply part, and the first air supply part and the second air supply part are both connected with the adjusting part; wherein the adjusting part is used for adjusting the first gas supply part to supply gas to the gas transmission part, and when gas fuel of the first gas supply part is insufficient, the adjusting part adjusts the second gas supply part to supply gas to the gas transmission part. According to the gas supply device, the gas supply state of the first gas supply part and the gas supply state of the second gas supply part are adjusted through the adjusting part, when gas fuel of the first gas supply part is insufficient, the second gas supply part is adjusted to supply gas to the gas conveying part, fuel gas can be supplemented to a vehicle in time for emergency, normal gas conveying of a vehicle engine is ensured, and the service life of the vehicle is prolonged. And faults caused by insufficient gas supply can be effectively prevented.
Need to check novelty before this filing date? Find Prior Art

Description

Technical Field

[0001] The utility model relates to the technical field of natural gas supply for vehicles, in particular to a gas supply device and a vehicle. Background Art

[0002] Natural gas (NG) is the cleanest fossil fuel for motor vehicles on Earth, offering a superior alternative to gasoline and diesel due to its abundant reserves, simple extraction, convenient storage and transportation, clean emissions, safety, and affordability. Compressed natural gas vehicles (CNGVs) have been around for nearly a century and have been widely adopted worldwide. By the end of 2021, China had 6.32 million NGVs on the road, accounting for approximately 2.8% of the vehicle market, with 5,600 gas stations operating. Currently, most LNG and CNG vehicles are dual-fuel, switching to gasoline or diesel when the fuel pressure in the tank runs low.

[0003] Currently, there are mobile refueling vehicles that can provide emergency refueling services within the service area of ​​rescue outlets, but the service area is limited and the rescue fee is expensive. Current gas-fueled vehicles do not have onboard emergency refueling devices, so when the original vehicle's gas tank runs out of fuel, the only option is to wait for a tow truck or other roadside assistance. Utility Model Content

[0004] The purpose of the utility model is to provide an air supply device and a vehicle, so that a gas fuel vehicle can supply air to the vehicle in time when the air pressure of the original vehicle gas tank is insufficient.

[0005] In a first aspect, the present invention provides a gas supply device for providing gas fuel to a vehicle, the gas supply device comprising:

[0006] A gas delivery unit, used for delivering gas fuel to vehicles;

[0007] a regulating portion, connected to the gas transmission portion;

[0008] an air supply unit, configured to supply air to the air delivery unit, the air supply unit comprising a first air supply unit and a second air supply unit, both of which are connected to the regulating unit;

[0009] in:

[0010] The regulating part is used to regulate the gas supply from the first gas supply part to the gas transmission part. When the gas fuel of the first gas supply part is insufficient, the regulating part regulates the gas supply from the second gas supply part to the gas transmission part.

[0011] An air supply device as described above, wherein preferably, the regulating part includes a three-way valve, the first interface of the three-way valve is connected to the first air supply part, the second interface of the three-way valve is connected to the second air supply part, and the third interface of the three-way valve is connected to the air transmission part.

[0012] In the air supply device as described above, preferably, the air supply device further includes a detection unit, and the detection unit is used to detect the air pressure of the first air supply part and the second air supply part.

[0013] In the air supply device as described above, preferably, the detection unit includes a first pressure sensor, the first pressure sensor is provided in the first air supply part, and the first pressure sensor is used to detect the air pressure of the first air supply part.

[0014] In the air supply device as described above, preferably, the detection unit includes a second pressure sensor, and the second pressure sensor is provided on a connecting pipeline between the second interface of the three-way valve and the second air supply part.

[0015] In the air supply device as described above, preferably, a pressure reducing valve is provided on the connecting pipeline between the first air supply part and the first interface of the three-way valve.

[0016] In the air supply device as described above, preferably, the second air supply part is detachably connected to the adjustment part.

[0017] In the air supply device as described above, preferably, a connecting portion is provided on the connecting pipeline between the regulating portion and the second air supply portion, and the connecting portion is used to connect the second air supply portion with the regulating portion.

[0018] In the air supply device as described above, preferably, the connecting portion includes a quick-connect connector, and the quick-connect connector is provided on the connecting pipeline between the regulating portion and the second air supply portion.

[0019] In a second aspect, the present invention provides a vehicle comprising the aforementioned air supply device.

[0020] Compared with the prior art, the air supply device of the present invention adjusts the air supply status of the first air supply part and the second air supply part through the adjustment part. When the gas fuel of the first air supply part is insufficient, the second air supply part is adjusted to supply air to the air transmission part, which can replenish fuel gas for the vehicle in time for emergency, ensure the normal operation of the vehicle engine, and effectively prevent the occurrence of malfunctions caused by insufficient air supply. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a structural schematic diagram of the air supply device provided in an embodiment of the present utility model;

[0022] Figure 2 This is a gas supply principle diagram of the second gas supply part of an embodiment of the present utility model.

[0023] Description of reference numerals:

[0024] 1-gas transmission part, 2-regulating part, 3-gas supply unit, 31-first gas supply part, 32-second gas supply part, 4-detection unit, 41-first pressure sensor, 42-second pressure sensor, 5-pressure reducing valve, 6-connecting part. DETAILED DESCRIPTION

[0025] The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and should not be construed as limiting the present invention.

[0026] First, refer to Figure 1 As shown, the utility model provides an air supply device for providing gas fuel to a vehicle. The air supply device includes an air delivery portion 1, a regulating portion 2, and an air supply unit 3, wherein:

[0027] The gas delivery unit 1 is used to deliver gaseous fuel to the vehicle so that the vehicle engine can operate normally.

[0028] The regulating part 2 is communicated with the gas delivery part 1 , and the regulating part 2 is used to regulate the gas supply unit 3 to supply gas fuel to the gas delivery part 1 .

[0029] The air supply unit 3 is used to supply air to the air delivery part 1 . The air supply unit 3 includes a first air supply part 31 and a second air supply part 32 . Both the first air supply part 31 and the second air supply part 32 are connected to the regulating part 2 .

[0030] In the embodiment provided in the present application, the first air supply part 31 supplies air to the air delivery part 1 when the vehicle is in normal operation to ensure the normal operation of the engine. The regulating part 2 can adjust the first air supply part 31 to supply air to the air delivery part 1, and the second air supply part 32 does not need to supply air to the air delivery part 1; when the fuel gas in the first air supply part 31 is insufficient, the regulating part 2 adjusts the second air supply part 32 to be connected with the air delivery part 1, so that the second air supply part 32 supplies air to the air delivery part 1, thereby ensuring that the engine can still operate normally in an emergency state, and preventing the occurrence of failures due to insufficient fuel gas.

[0031] In one feasible embodiment, the regulating unit 2 includes a three-way valve, the first interface of which is connected to the first air supply unit 31, the second interface of which is connected to the second air supply unit 32, and the third interface of which is connected to the air delivery unit 1. During normal engine operation, the first air supply unit 31 and the first interface of the three-way valve remain normally open, the second air supply unit 32 and the second interface of the three-way valve remain normally closed, and the air delivery unit 1 and the third interface of the three-way valve remain connected. When the fuel gas in the first air supply unit 31 is insufficient, the second interface of the three-way valve is opened, allowing the second air supply unit 32 to communicate with the second interface of the three-way valve, thereby supplying air to the air delivery unit 1.

[0032] To ensure vehicle safety and to promptly understand the status of the gas fuel in the first gas supply section 31, in the embodiment provided herein, the gas supply device further includes a detection unit 4 for detecting the gas pressure in the first gas supply section 31 and the second gas supply section 32. In one feasible embodiment, the detection unit 4 includes a first pressure sensor 41 and a second pressure sensor 42. The first pressure sensor 41 is disposed in the first gas supply section 31 and performs real-time detection of the gas pressure in the first gas supply section 31. When the first pressure sensor 41 detects that the pressure in the first gas supply section 31 is sufficient, it indicates that the fuel gas in the first gas supply section 31 is sufficient and there is no need to open the second gas supply section 32 for gas supply. When the first pressure sensor 41 detects that the gas pressure in the first gas supply section 31 reaches a set threshold (indicating that the fuel gas in the first gas supply section 31 is insufficient or lacking), the second port of the three-way valve is opened, and the second gas supply section 32 is activated to supply gas to the gas transmission section 1 for emergency response. The second pressure sensor 42 is arranged on the connecting pipeline between the second interface of the three-way valve and the second air supply part 32. On the one hand, during the process of the second air supply part 32 supplying air to the gas transmission part 1, the air pressure of the second air supply part 32 is monitored in real time to understand whether the fuel gas in the second air supply part 32 is sufficient; on the other hand, when the second interface of the three-way valve remains closed, the second air supply part 32 is detected so that an alarm can be issued in time when the air pressure in the second air supply part 32 is abnormal to prevent accidents.

[0033] During the gas supply process of the first gas supply part 31, in order to ensure the safety of the gas supply process, in the embodiment provided in the present application, a pressure reducing valve 5 is provided on the connecting pipeline between the first gas supply part 31 and the first interface of the three-way valve. When the pressure of the fuel gas output by the first gas supply part 31 is too high, the pressure reducing valve 5 is used to reduce the gas pressure to the pressure required by the gas transmission part 1, so that the pressure of the fuel gas entering the gas transmission part 1 remains stable, thereby ensuring the safety and stability of the gas supply process.

[0034] Since the second air supply part 32 is mainly used for emergency air supply when the fuel gas of the first air supply part 31 is insufficient, in order to be applicable to different vehicles, the second air supply part 32 of the present application is detachably connected to the regulating part 2. Second air supply parts 32 of different capacities can be selected and placed in the vehicle according to the type of vehicle. When emergency air supply is needed, the second air supply part 32 can be connected to the regulating part 2. In the embodiment provided by the present application, a connecting part 6 is provided on the connecting pipeline between the regulating part 2 and the second air supply part 32. The connecting part 6 is used to connect the second air supply part 32 to the regulating part 2 to achieve a detachable connection between the two. Preferably, the connecting part 6 includes a quick-connect connector. When the second air supply part 32 is needed to supply air, the second air supply part 32 is connected to the connecting pipeline using the quick-connect connector, and then the second interface of the three-way valve is opened to achieve the connection between the three-way valve and the second air supply part 32. It is easy to operate and has strong applicability.

[0035] In other embodiments, other detachable connection methods may be used to connect the second interface of the three-way valve to the second air supply portion 32, which is not limited here.

[0036] Based on the above embodiments, the working principle of the gas supply device of the present application is:

[0037] During normal gas supply, the first gas supply part 31 remains connected to the first interface of the three-way valve, and the second interface of the three-way valve remains closed to the second gas supply part 32. When the first pressure sensor 41 detects that the air pressure in the first gas supply part 31 is insufficient, the second interface of the three-way valve is connected to the second gas supply part 32, and the second gas supply part 32 supplies gas to the gas transmission part 1.

[0038] Reference Figure 2 As shown, during the air supply process of the second air supply part 32, the second pressure sensor 42 detects the air pressure in the second air supply part 32 in real time. When the pressure value detected by the second pressure sensor 42 is set between the first threshold value and the second threshold value, the air supply device is in the emergency air supply mode, and the second interface of the three-way valve is opened. At this time, the signal of the first pressure sensor 41 is shielded, and the vehicle enters a special operating mode (limp home), the engine air-fuel ratio is corrected, and the engine speed and output torque are limited to ensure stable operation of the vehicle.

[0039] When the pressure detected by the second pressure sensor 42 falls below the first threshold, a low pressure fault is reported, indicating insufficient emergency gas tank pressure or a pipeline leak. When the pressure detected by the second pressure sensor 42 rises above the second threshold, a high pressure fault is reported, indicating a faulty emergency gas tank. Upon these alarms, the second port of the three-way valve is closed, exiting the emergency gas supply mode.

[0040] When the second interface of the three-way valve is closed, the emergency air source of the second air supply part 32 is deactivated, the signal of the first pressure sensor 41 is restored, the vehicle returns to normal operating mode, the engine air-fuel ratio stops being corrected, and the speed and output torque are restored.

[0041] In a second aspect, the present invention provides a vehicle comprising the aforementioned air supply device. In the event of insufficient air supply from the first air supply unit 31, the vehicle equipped with the air supply device can utilize the second air supply unit 32 for emergency air supply, thereby enabling the vehicle to continue operating in an emergency state and effectively reducing the probability of power system failures caused by fuel switching.

[0042] The above describes in detail the structure, features and effects of the present invention based on the embodiments shown in the drawings. The above is only a preferred embodiment of the present invention, but the scope of implementation of the present invention is not limited to what is shown in the drawings. Any changes made in accordance with the concept of the present invention, or modifications to equivalent embodiments with equivalent changes, which do not exceed the spirit covered by the description and drawings, should be within the scope of protection of the present invention.

Claims

1. A gas supply device for providing gas fuel to a vehicle, characterized in that: The air supply device comprises: A gas delivery unit, used for delivering gas fuel to vehicles; a regulating portion, connected to the gas transmission portion; an air supply unit, configured to supply air to the air delivery unit, the air supply unit comprising a first air supply unit and a second air supply unit, both of which are connected to the regulating unit; in: The regulating part is used to regulate the gas supply from the first gas supply part to the gas transmission part. When the gas fuel of the first gas supply part is insufficient, the regulating part regulates the gas supply from the second gas supply part to the gas transmission part.

2. The air supply device according to claim 1, characterized in that The regulating part includes a three-way valve, a first interface of the three-way valve is communicated with the first air supply part, a second interface of the three-way valve is communicated with the second air supply part, and a third interface of the three-way valve is communicated with the air transmission part.

3. The air supply device according to claim 2, characterized in that: The air supply device further includes a detection unit configured to detect the air pressure of the first air supply part and the second air supply part.

4. The air supply device according to claim 3, characterized in that The detection unit includes a first pressure sensor, which is provided at the first air supply part and is used to detect the air pressure of the first air supply part.

5. The air supply device according to claim 3, characterized in that: The detection unit includes a second pressure sensor, which is provided on a connecting pipeline between the second interface of the three-way valve and the second air supply part.

6. The air supply device according to claim 2, characterized in that: A pressure reducing valve is provided on the connecting pipeline between the first air supply part and the first interface of the three-way valve.

7. The air supply device according to claim 1, characterized in that The second air supply portion is detachably connected to the adjustment portion.

8. The air supply device according to claim 7, characterized in that: A connecting portion is provided on a connecting pipeline between the regulating portion and the second air supply portion, and the connecting portion is used to connect the second air supply portion and the regulating portion.

9. The air supply device according to claim 8, characterized in that: The connecting portion includes a quick-connect connector, which is provided on a connecting pipeline between the regulating portion and the second air supply portion.

10. A vehicle, characterized in that: A gas supply device comprising the gas supply device according to any one of claims 1 to 9.