Combustible gas injection system for dual-fuel locomotive

Abstract

The invention discloses a combustible gas injection system for a dual fuel locomotive. The combustible gas injection system comprises a gas inlet pipe and a hollow pipe, wherein the upper end of the hollow pipe is provided with a plurality of injection holes which are correspondingly provided with solenoid valves; the inner wall of the hollow pipe is provided with grooves; the injection holes are over against the grooves; a plurality of electric heating tubes are arranged in the grooves side by side; the bottom of each electric heating tube is provided with a guide block; the bottom of each groove is provided with a guide groove matched with the guide block; each electric heating tube comprises a tube body, an electric insulating material filled in the tube body and an electric heating wire arranged inside the tube body; the tail end of the electric heating wire is connected with a wiring terminal; one end of the groove far from the gas inlet pipe is provided with a pinhole communicating with the outside; the wiring terminal penetrates through the pinhole and is connected with a wiring plugboard; and a heat conducting board is covered on the open end of each groove. The lower part of the tube body of each electric heating tube is provided with the guide block which is matched with the guide groove, so that the tube body can be mounted more stably; and thus, the electric heating tubes can be fastened without adding any new fixing structure, thereby achieving the goal of optimizing the injection rail internal structure.

Description

technical field [0001] The invention relates to a gas injection rail, in particular to a gas injection system for a dual-fuel locomotive. 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 object of the present invention is to provide a gas injection system for a dual-fuel locomotive, which ensures the normal passage of gas and avoids liquid in the gas pipeline. [0004]...

AI Technical Summary

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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