Multi-point injection intake manifold for gas engines

Abstract

The invention discloses a multi-point injection intake pipe of a gas engine. The multi-point injection intake pipe of the gas engine comprises an intake pipe body and a fuel gas spraying pipe. The intake pipe body is provided with an intake manifold which can be communicated with an intake channel of a cylinder cover of the gas engine. A fuel gas channel is integrally cast on the inner side of the bottom pipe wall of the intake manifold. The outlet of the fuel gas channel is located in the intake manifold. The inlet of the fuel gas channel is used for being connected with a fuel gas control valve of the gas engine. One end of the fuel gas spraying pipe is connected with the outlet of the fuel gas channel, and the other end of the fuel gas spraying pipe is used for stretching into the intake channel of the cylinder cover of the gas engine. According to the multi-point injection intake pipe of the gas engine, fuel gas can be directly sprayed into the gas channels of all cylinders, the amount of residual fuel gas in an intake main pipe can be reduced to the maximum extent, generation of flame back and explosion is avoided, and the operation safety of the gas engine is improved greatly.

Description

Technical field [0001] The invention relates to the field of gas engines, in particular to a multi-point injection intake pipe of a gas engine. Background technique [0002] With the adjustment of the national "oil-to-gas" energy structure and the vigorous promotion of new energy-saving and emission-reduction technologies, the R&D and application of gas engines have attracted more and more attention and attention. The gas intake schemes of gas engines are usually divided into premixed (single-point injection) and direct injection (multi-point injection). Because of its convenient layout and easy modification, the single-point injection system is widely used in the modification of "oil-to-gas" engines. However, because the single-point injection system is mixed in the intake manifold, there is a risk of the intake manifold misfire and explosion, especially for large-displacement engines. The explosion of the intake manifold will cause irreparable losses. For the multi-point inje...

AI Technical Summary

Problems solved by technology

[0003] But, for above-mentioned two kinds of multi-point injection systems, the biggest shortcoming of the first scheme is that nozzle pipe installation is difficult, can only slowly stretch into from the outside of intake pipe, and the length of nozzle pipe is severely restricted (length is too long and can't be installed)

For the second method, due to the limitation of the intake pipe structure, it is difficult for the nozzle to penetrate deep into the air passage of the cylinder head, resulting in gas injection delay and slow engine response

In addition, the arrangement of the nozzle will disturb the air intake flow, affecting the air flow rate and intake quality

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