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Integrated fuel supply device of light LNG commercial vehicle

A technology for fuel supply devices and commercial vehicles, which is applied in the direction of the arrangement combined with the fuel supply of internal combustion engines, power devices, vehicle components, etc., and can solve the problems of LNG evaporation and waste

Active Publication Date: 2021-05-18
DONGFENG AUTOMOBILE COMPANY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to overcome the problems of low-temperature liquid LNG evaporation waste in LNG tanker tanks existing in the prior art, and the existing LNG gas supply system does not have the problem of auxiliary engine gas intake, and provides a recyclable LNG tanker tank evaporation system. Integrated fuel supply device for light LNG commercial vehicles with natural gas and integrated auxiliary engine air intake

Method used

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  • Integrated fuel supply device of light LNG commercial vehicle
  • Integrated fuel supply device of light LNG commercial vehicle
  • Integrated fuel supply device of light LNG commercial vehicle

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0054] Embodiment 1: An integrated fuel supply device for a light-duty LNG commercial vehicle, comprising an LNG vehicle-mounted bottle 1 and an installation frame 2, and the LNG vehicle-mounted bottle 1 is fixedly installed on the installation frame 2; the integrated fuel supply device of the light-duty LNG commercial vehicle The fuel supply device also includes an air supply system 3, which is fixedly installed on the installation frame 2; a distribution head 11 is provided at the mouth of the LNG vehicle-mounted bottle 1, and a second An economical valve 41, one end of the first economical valve 41 communicates with the inside of the LNG vehicle-mounted bottle 1 through the pressurization port of the distribution head 11, and the other end of the first economical valve 41 communicates with the interior of the distribution head 11 through the bypass pipeline 12. The liquid outlet is connected, and the liquid outlet of the distribution head 11 is also connected with one end of...

Embodiment 2

[0057] Embodiment 2 is basically the same as Embodiment 1, and its difference is:

[0058] The gas supply system 3 includes a carburetor 31, a buffer tank 32, a voltage stabilizer 33 and a low-pressure gas shut-off valve 34. The input end of the carburetor 31 is connected with the liquid outlet pipe 5 of the gas cylinder, and the output end of the carburetor 31 is in turn The buffer tank 32 and the voltage stabilizer 33 communicate with the input end of the low-pressure gas shut-off valve 34, and the output end of the low-pressure gas shut-off valve 34 communicates with the engine; the installation frame 2 is fixedly connected to the vehicle frame, and the installation frame 2 includes a strap 21 and two symmetrically arranged L-shaped brackets 22, the bottoms of the two L-shaped brackets 22 are connected by a connecting plate 23; the LNG vehicle-mounted bottle 1 is fixed on the L-shaped bracket 22 through the strap 21 , the side of the connecting plate 23 is fixedly connected...

Embodiment 3

[0060] Embodiment 3 is basically the same as Embodiment 2, and its difference is:

[0061] The buffer tank 32 communicates with the regulator 33 through a spare gas port tee joint 91, the first port of the spare gas port tee joint 91 communicates with the output end of the buffer tank 32 through a connecting pipeline, and the spare gas port three The second port of the through joint 91 is communicated with the input end of the voltage regulator 33 through a connecting pipeline, and the third port of the spare air port tee joint 91 is communicated with one end of the first manual valve 92, and the first The other end of the manual control valve 92 is the spare air intake port.

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Abstract

An integrated fuel supply device of a light LNG commercial vehicle comprises an installation frame and an LNG vehicle-mounted bottle installed on the installation frame. A distribution head is arranged at one end of the LNG vehicle-mounted bottle, a first economic valve is arranged below the distribution head, one end of the first economic valve is connected with the interior of the LNG vehicle-mounted bottle through the distribution head, and the other end of the first economic valve is connected with one end of a bypass pipeline. The other end of the bypass pipeline is simultaneously connected with the interior of the LNG vehicle-mounted bottle and one end of a gas bottle liquid outlet pipe through the distribution head, and the other end of the gas bottle liquid outlet pipe is connected with a gas supply system; a pressurization pipeline three-way connector is arranged on the lower portion of the LNG vehicle-mounted bottle, a first port of the pressurization pipeline three-way connector is connected with the interior of the LNG vehicle-mounted bottle, and a second port of the pressurization pipeline three-way connector is connected with the interior of the LNG vehicle-mounted bottle sequentially through a second economic valve, a pressurizer, a self-pressurization pipeline and the distribution head; and a third port of the pressurization pipeline three-way connector is connected with a tank car tank safety valve. The design is compact in arrangement, environment-friendly and better in economical efficiency.

Description

technical field [0001] The invention relates to an integrated fuel supply device, in particular to an integrated fuel supply device for a light-duty LNG commercial vehicle, and is particularly suitable for supplying fuel to a light-duty LNG commercial vehicle. Background technique [0002] As emission regulations become more and more stringent, the use of commercial vehicles fueled by liquefied natural gas (LNG) is increasing due to its advantages of low emission, low pollution and low price. [0003] In the prior art, the gas supply system on LNG vehicles is generally divided into gas cylinders, self-pressurized finned tubes, vaporizers, buffer tanks, and voltage stabilizers. Device, low-pressure gas cut-off valve and other supporting parts. For LNG tank trucks, during the transportation process, the low-temperature liquid LNG in the LNG tank tank will evaporate into gaseous natural gas. When the pressure in the tank reaches a certain value, the natural gas will be dischar...

Claims

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Application Information

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IPC IPC(8): B60K15/07
CPCB60K15/07
Inventor 姚佳佳刘虎程伟纪辉张宇翔陈期高王元欣沈震宇陈纪夏晨刘健宇张倩茹雷冰芬陈清华晏红陈乐乐裴帆陈礼军吴灿陈菲宋健张宁苑海振龚雪陈超
Owner DONGFENG AUTOMOBILE COMPANY
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