Simulation system and method for reproducing soot evolution characteristics under engine post-injection strategy

Abstract

The invention discloses a simulation system capable of reproducing soot evolution characteristics under a post-injection strategy of an engine, which comprises a soot generator, an electric cylinder controller, a computer control system, a Mckenna diffusion combustor fixed on a displacement bench and a pair of self-locking tweezers arranged above the Mckenna diffusion combustor, and is characterized in that a central steel pipe of the Mckenna diffusion combustor is connected to a gaseous fuel source through a pipeline, air inlet pores of a plurality of metal sintered plates at the periphery of the Mckenna diffusion combustor are all connected to an air inlet main pipeline which is connected with a nitrogen gas cylinder and an oxygen gas cylinder; a coiled pipe is connected to a constant temperature water tank; an in-line electric cylinder connected with the self-locking tweezers realizes connection with the electric cylinder controller through a motor and a programming data line, and model carbon black in a carbon black container is taken into a gas channel through a rotating steel brush under driving of a piston. The simulation system disclosed by the invention can facilitate to simplify research for formation and conversion mechanisms of soot generated under the post-injection strategy of the engine, thereby providing a scientific basis for preventing atmosphere environment pollution.

Description

Technical field [0001] The invention relates to an engine simulation system, in particular to a simulation system capable of reproducing the evolution characteristics of soot under an engine post injection strategy. Background technique [0002] Nowadays, the emission of soot particles has become a worldwide problem. Soot emission not only pollutes the environment, but also poses great harm to human health. Soot emissions are mainly derived from the combustion of fossil fuels, and the current engines are mainly based on fossil fuel combustion, so it is imperative to develop related technologies to reduce engine soot emissions. [0003] The post-injection strategy is an effective method for reducing engine soot emissions. Its detailed mechanism is not well known to the majority of researchers. Studying the mechanism of post-injection to reduce soot emissions will help to further improve the soot generation mechanism, and It is conducive to further development of related technologie...

AI Technical Summary

Problems solved by technology

However, due to the complex combustion conditions of the engine, it is impossible to study the influence of a single variable on it, so it is necessary to develop a simulation system that can reproduce the evolution characteristics of soot under the post-engine strategy

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