Fuel injection mechanism of vehicle-mounted gas bottle of liquefied natural gas vehicle

Abstract

The invention discloses a fuel injection mechanism of a vehicle-mounted gas bottle of a liquefied natural gas vehicle. The mechanism comprises a liquefied natural gas charging panel rack with pressure gauge and a liquefied natural gas carrying bottle, wherein the technical key points are that: a vehicle-mounted gas bottle emptying valve, a charging station pipeline emptying valve and a charging valve are connected in series in the liquefied natural gas charging panel rack in turn; an output end of the charging valve is communicated with the liquefied natural gas carrying bottle through a liquid inlet pipeline; the liquefied natural gas carrying bottle is communicated with an input end of the vehicle-mounted gas bottle emptying valve through an emptying pipeline; a gas return pipe for emptying the liquefied natural gas in gas phase is arranged between the vehicle-mounted gas bottle emptying valve and the charging station pipeline emptying valve; and a charging pipe for feeding the liquefied natural gas liquid is arranged between the charging station pipeline emptying valve and the charging valve. The mechanism has the advantages of separately controlling charging and exhausting by means of three valves, completely replacing an injection gun to realize corresponding functions and reducing production cost, along with simple structure, easy manufacturing and easy configuration for the charging station.

Description

technical field [0001] The invention belongs to the technical field of fuel filling of liquefied natural gas vehicle-mounted gas cylinders, in particular to a fuel filling mechanism for liquefied natural gas vehicle-mounted gas cylinders. Background technique [0002] With the depletion of energy and the seriousness of environmental pollution year by year, countries around the world are paying more and more attention to energy conservation and environmental protection. The automobile industry consumes a large part of the world's oil production. Under this background, countries around the world are paying more and more attention to the technology of hybrid vehicles. Major automobile manufacturers have invested a lot of money in the development of various alternative fuel vehicles. Cars fueled by natural gas came into being. Liquefied natural gas (LNG) has become an important development direction of high-energy vehicles due to its convenient storage and transportation and hi...

AI Technical Summary

Problems solved by technology

[0003] At present, the disclosed liquefied natural gas filling gun has a complex structure, and because the relevant supporting facilities have not kept up with it, it is difficult to be widely used, the overall cost is high, and the service life is also short

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