Multi-point injection type natural gas engine gas inlet structure

Abstract

The utility model provides a multi-point injection type natural gas engine air inlet structure which comprises a pipe body, one side of the pipe body is communicated with a plurality of branch pipes arranged side by side, the interior of the pipe body is divided into an air channel and a fuel gas channel through dividing strips arranged in the length direction of the pipe body, and a dividing piece connected with the dividing strips is arranged in each branch pipe. The interior of each manifold is divided into an air inlet channel and a fuel gas inlet channel through a separation sheet; a rotating shaft penetrates through each manifold and is rotationally connected with the manifold, the rotating shaft is provided with a valve plate used for blocking the air inlet channel and the gas inlet channel at the free end of each partition plate, and the outer side of the manifold on the outer side is rotationally connected with an accelerator adjusting rotating disc connected with one end of the rotating shaft; the free end of each manifold is connected with a gas spraying pipe communicated with the air inlet channel and the fuel gas inlet channel. The gas inlet structure of the natural gas engine is optimized, the time delay in the gas inlet process is reduced, and the transient response performance of the engine is improved.

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