Novel automotive LNG gas supply system

A technology for gas supply systems and vehicles, which is applied in the field of commercial vehicles, can solve problems such as increasing the price of LNG systems for vehicles, reducing the safety of gas cylinder pressure, and increasing the failure rate of the system, so as to reduce the price, reduce the cost of transformation, and improve the market. The effect of competitiveness

Inactive Publication Date: 2018-04-03
SHAANXI HEAVY DUTY AUTOMOBILE
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Problems solved by technology

Therefore, the economical valve can not play a big role in reducing the safety of cylinder pressure and reducing gas consumption
On the contrary, the price of an economical valve is about 350 yuan. Adding an economical valve not only increases the price of the vehicle LNG system, but at the same time, when the economical valve is over-liquid, it is easy to cause liquid leakage and the economical valve is damaged by freezing, which improves the The failure rate of the system increases the after-sales cost

Method used

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  • Novel automotive LNG gas supply system
  • Novel automotive LNG gas supply system
  • Novel automotive LNG gas supply system

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Embodiment approach

[0039] The second preferred implementation is described for the LNG gas supply system with dual gas cylinders for vehicles, please refer to the attached image 3 And attached Figure 4 .

[0040] attached image 3The structure of the traditional vehicle double-gas cylinder LNG gas supply system is given. As shown in the figure, the vehicle double-gas cylinder LNG gas supply system includes: gas cylinder assembly-1, liquid level gauge-2, liquid inlet check valve 13. Cylinder pressure gauge 14, main safety valve 5, auxiliary safety valve 6, pipeline safety valve 7, emptying stop valve 8, air return port 9, liquid filling port 10, economic valve 11, Liquid outlet one-way valve 12, liquid outlet stop valve 13, overcurrent valve 14, carburetor 15, self-pressurization stop valve 16, buffer tank 17, boost pressure regulating valve 18, pipeline pressure gauge 19, electromagnetic Cut-off valve 20, voltage stabilizer 21, radiator 22, cylinder assembly II 23, liquid level gauge II 24,...

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Abstract

The invention provides an automotive LNG gas supply system. The automotive LNG gas supply system comprises a gas bottle assembly, a safety valve, a safety pressure relieving pipeline and an engine gassupply pipeline; the safety pressure relieving pipeline and the engine gas supply pipeline are connected to the gas bottle assembly, the safety valve is arranged on the safety pressure relieving pipeline, and the safety pressure relieving pipeline and the engine gas supply pipeline are independent and are not connected. Compared with a traditional automotive LNG gas supply system, the novel automotive LNG gas supply system removes arrangement of an economic valve and an economic valve connecting pipeline, direct supply through liquid LNG fuel is achieved, on the premise of ensuring the original safety of the whole gas supply system, the price and the failure rate of the automotive LNG gas supply system are greatly reduced, the superior economy is provided for a user, the system belongs tothe element omission invention, and the market popularization prospect is wide.

Description

technical field [0001] The invention relates to a novel LNG gas supply system for vehicles, which belongs to the field of commercial vehicles. Background technique [0002] Due to the characteristics of easy vaporization of liquefied natural gas (LNG), the internal pressure of the liquid LNG in the vehicle LNG cylinder is often increased due to vaporization, and the design pressure of the vehicle LNG cylinder is relatively low. Therefore, the traditional vehicle LNG supply The gas system is often equipped with an economic valve, which is used to reduce the pressure of the gas cylinder when the engine is working and the pressure of the gas cylinder is greater than the set pressure value of the economic valve, so as to ensure the safety of the pressure in the gas cylinder. [0003] Although in the prior art, an economical valve is installed in the vehicle LNG gas supply system to ensure the safety of the pressure in the gas cylinder, in fact, when the engine is not working, th...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F02M21/02
CPCF02M21/0215F02M21/0218Y02T10/30
Inventor 王岗谷雪松吴润汉申晓霞李鹏
Owner SHAANXI HEAVY DUTY AUTOMOBILE
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