Abstract
In this paper, through the electromechanical control modification of 4190 ZLC-2 diesel, the electronic fuel injection model is established by AMESim simulation software, and the high pressure circulation model of butanol/diesel dual fuel engine is established by AVL-FIRE software, the appropriate initial parameters module and corresponding boundary conditions are set. At the condition of low-temperature combustion through exhaust gas recirculation (EGR), in the optimization scheme studying the influence of butan blending ratio and EGR rate on diesel engine emissions. The result shows that the addition of butanol can improve the low temperature combustion, reducing the formation of CO and soot. The introduction of EGR can achieve low temperature combustion and significantly reduce NO emissions. The optimal parameter set for parameter matching is obtained: B20/EGR12.5 %.
Highlights
At present, the dependence on the international ship freight industry is becoming more and more important
Butanol is closer to diesel in nature which has good application value [3,4,5].The research on butanol/diesel dual fuel engines by domestic and foreign research institutes mainly focuses on changing diesel engine operating parameter to analyze parameter changes on the influence of emissions[6,7,8].In this paper, the AMEsim simulation software is used to establish an electronically controlled fuel injection model
The effect of exhaust gas recirculation (EGR) rate on A4 consumption: It can be seen from Fig. 7 that the A4 consumption rate decreases less at low blending ratios, mainly because the combustion is insufficient to facilitate the formation of soot
Summary
The dependence on the international ship freight industry is becoming more and more important. The AMEsim and AVL-FIRE software are used to change the butanol blending ratio and EGR rate under constant operating parameters. The setting of the boundary condition parameters mainly depend on the temperature of each component of the model at the initial running time of the diesel engine. 2.2 Model Verification In this paper, the mass fraction of butanol (C4H10O) in the AVL_FIRE solver gas composition is set to 0 .Under the rated working condition, the cylinder pressure curve under the condition of pure diesel combustion in the model is compared to the measured cylinder pressure curve of the original machine test data. The effect of butanol blending ratio on NO emission is that the cylinder temperature is higher at low EGR rate, and the butanol phase contains more oxygen than diesel. The NO emission is less affected by the proportion of butanol blended
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