Wall diversion hedging Venturi integrated mixer

Abstract

The invention relates to a wall diversion hedging type Venturi integrated mixer, the integrated mixer includes a shell, an EGR core, a cross arm, a fixed pin, a natural gas beam and a natural gas impeller, the air enters the air channel from the inlet, and the EGR The exhaust gas passes through the round hole on the wall of the EGR core and the air hole in the center of the cross arm in turn, and then enters the air channel to mix with the air. The Venturi structure formed in the EGR core is used to increase the gas flow rate, and the mixing is promoted by the relationship between the flow rate and the pressure; the EGR core A wall deflector is added at the flaring of the Venturi structure inside to make the gas undergo primary rotation and mixing; the natural gas passes through the round hole on the wall surface of the natural gas beam and the central gas groove of the natural gas impeller in sequence, and then enters the gas channel to be mixed with the mixed gas for a second rotation. The rotation direction of the primary rotation mixing is opposite to that of the secondary rotation mixing. The mixed gas mixed in the primary rotation is reversely disturbed by the natural gas impeller, and the hedging is used to promote the mixing. At the same time, a rotating air flow is formed to improve the mixing uniformity.

Description

Wall Guided Hedge Venturi Integrated Mixer technical field The present invention relates to natural gas engine air intake system technical field, be specifically related to a kind of wall surface diversion hedging type venturi Integrated mixer. Background technique Exhaust gas recirculation (ExhaustGasRecirculation, abbreviation EGR), refers to the internal combustion engine will discharge after combustion A technology in which a part of the gas is separated and introduced into the intake side for re-combustion. The main purpose is to reduce the amount of gas in the exhaust gas. Nitrogen oxides (NOx) and partial load sharing can improve fuel consumption. Internal combustion engine contains oxygen in the exhaust gas after combustion Very little or no amount, this exhaust gas mixes with the inhalation to reduce the oxygen concentration in the inhalation, resulting in the following Phenomenon: The oxygen content lower than the atmosphere will reduce the temperature d...

AI Technical Summary

Problems solved by technology

However, the impeller of this patent solution is arranged upstream of the core, which will cause the core to damage the cyclone formed by the impeller, and the streamline shape of the impeller is relatively poor, and the pressure loss is relatively high, which will lead to insufficient air intake of the engine and low engine output power. , the square pores will lead to high addition cost and small effective flow area

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