Mixed air-incoming integrated circular divided manifold wall surface gas fuel spraying and mixing device

Abstract

The purpose of the invention is to provide a mixed air-incoming integrated circular divided manifold wall surface gas fuel spraying and mixing device. Gas fuel is conveyed to the device through a pipeline, firstly a fuel gas spraying valve is passed, and an actuator controls the opening and the closing of a valve by controlling a valve element; the stability of the opening and the closing of the valve can be ensured through a guide pin, a pressure balancing hole, a pressure balancing groove and a pressure-stabilizing cavity, and the responsiveness of air-supplying and air-stopping of the device is strengthened; mass flow is achieved through a mixed air-incoming mode of axial main air drain direct air-incoming and circumferential air-supplying hole air-incoming in the valve, meanwhile airflow interference can be avoided, and the air-supplying stability of the device is achieved; through a fuel diffusing pipe cavity structure, the fuel can be distributed in the whole device, and the continuity and the responsiveness of air-supplying of an air-supplying device are achieved; and through a branch pipe chute structure, the ejected gas fuel forms an eddy current, the mixing degree of the fuel and air is promoted, the branch pipe chute structure is beneficial to combustion, and the working performance of the device is improved.

Description

technical field [0001] The invention relates to an air intake device, in particular to an air intake device of a gas fuel engine. Background technique [0002] Increasing emission standards and increasingly severe energy crisis pose new challenges to engine technology. Many gaseous fuels, including natural gas, have become the research focus of many researchers at home and abroad as alternative fuels for engines, and gaseous fuel engines have also become the subject of extensive research. A complete set of air intake devices, including many parts from gas injection valves to intake manifolds to cylinder valves, each part through which fuel and air flow is of great significance to the performance of gas fueled engines. For the injection of gaseous fuel, it is required to have a large injection flow rate, high injection efficiency, stable injection and good response; and for the flow of gaseous fuel and air, it is necessary to make the gaseous fuel and air fully flow before e...

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Problems solved by technology

For example: CN106050479A patent "a gas injection valve and injection pipe structure, installation and arrangement method" introduces a kind of engine gas injection valve and nozzle structure, which is characterized in that many discharge nozzles are opened on the nozzle side wall, each row The staggered distribution of the nozzles enhances the mixing of fuel and air to a certain extent, but after the gaseous fuel is ejected from the nozzles, the gas concentration in the radial direction of the intake port will gradually decrease, which will also cause the mixing of fuel and air. insufficient

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