Rail type gas injection method for dual-fuel automobile

Abstract

The invention discloses a rail type gas injection method for a dual-fuel automobile. The rail type gas injection method involves a gas inlet pipe and a hollow pipe. A groove with the section being a major arc is formed in the inner wall of the hollow pipe, and injection holes right face the arc bottom of the groove. A plurality of electric heating pipes are installed in the groove. Guide blocks are installed at the bottoms of the electric heating pipes. Guide grooves matched with the guide blocks are formed in the bottom of the groove. Each electric heating pipe comprises a pipe body, an insulating material stuffed into the pipe body, and an electric heating wire arranged in the pipe body. The tail ends of the electric heating wires are connected with binding posts. The wiring posts penetrate through small holes to be connected with a wiring plugboard. The open end of the groove is covered with a heat conducting plate. The electric heating pipes are placed in the arc groove, the lateral end of the groove is sealed with the wiring plugboard, and therefore the electric heating pipes are conveniently taken and placed while heat loss can be reduced, that is, a user can determine the number of the electric heating pipes in real time according to the fuel gas supply quantity, and the effect that stable operation of the fuel gas output flow is completed at the minimum heating cost is guaranteed.

Description

technical field [0001] The invention relates to a gas injection rail, in particular to a rail-type gas injection method for a dual-fuel vehicle. 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 rail-type gas injection method for dual-fuel vehicles, which ensures the normal passage of gas and avoids liquid in the gas pipeli...

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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