Vehicle liquefied gas continuous supply system

Abstract

The invention discloses a vehicle liquefied gas continuous supply system. The vehicle liquefied gas continuous supply system comprises a gas inlet pipe and a hollow pipe. The upper end of the hollow pipe is provided with a plurality of injection holes. Solenoid valves are mounted on the corresponding injection holes. The inner wall of the hollow pipe is provided with a groove. The injection holesface the groove. A plurality of electric heating pipes are arranged in the groove side by side. The bottoms of the electric heating pipes are provided with guide blocks. The bottom of the groove is provided with guide grooves matched with the guide blocks. Each electric heating pipe comprises a pipe body, an insulating material filled up in the pipe body and an electric heating wire arranged in the pipe body. The tail end of each electric heating wire is connected with binding posts. Small holes communicating with the outside are formed in the end, far from the gas inlet pipe, of the groove. The bonding posts penetrate through the small holes and are connected with a wiring plug board. The open end of the groove is covered with a heat conductive plate. The lower portions of the pipe bodiesof the electric heating pipes are provided with the guide blocks which are matched with the guide grooves, so that the pipe bodies are placed more stably, that is, the electric heating pipes can be fastened without adding a new fixing structure, and the purpose of optimizing the internal structure of an injection rail is achieved.

Description

technical field [0001] The invention relates to a fuel injection rail, in particular to a continuous supply system of liquefied gas for vehicles. Background technique [0002] The gas injection rail is a necessary equipment on CNG-gasoline dual-fuel vehicles, but when the temperature is low, the low temperature causes the gas in the low-pressure pipeline to shrink, forming a negative pressure between the gas common rail and the filter, so that the gas injection rail opens It is not easy and affects the normal use of the gas system; we use water heating to heat the gas injection rail to make it work normally, but it is necessary to install a waterway, which increases pipeline interference, is prone to liquid leakage, and increases the difficulty of maintenance. Contents of the invention [0003] The purpose of the present invention is to provide a continuous liquefied gas supply system for vehicles, which ensures the normal passage of gas and avoids liquid in the gas pipeli...

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Problems solved by technology

[0002] The gas injection rail is a necessary equipment on CNG-gasoline dual-fuel vehicles, but when the temperature is low, the low temperature causes the gas in the low-pressure pipeline to shrink, forming a negative pressure between the gas common rail and the filter, so that the gas injection rail opens It is not easy and affects the normal use of the gas system; we use water heating to heat the gas injection rail to make it work normally, but it is necessary to install a waterway, which increases pipeline interference, is prone to liquid leakage, and increases the difficulty of maintenance

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