Quantitative evaluation method for determining the misfire boundary of n-butanol premixed charge compression ignition

IF 7.2 2区工程技术 Q1 CHEMISTRY, APPLIED

Fuel Processing Technology Pub Date : 2025-05-15 DOI:10.1016/j.fuproc.2025.108234

Zhiqiang Han , Qiang Yang , Buwei Deng , Zinong Zuo , Jia Fang , Yan Yan , Yi Wu , Xueshun Wu , Wei Tian

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引用次数: 0

Abstract

This study proposes a novel approach for determining the misfire boundary of an engine. It skillfully builds a nonlinear mapping correlation between post-cylinder performance and in-cylinder combustion state parameters. The accuracy of the misfire boundary determination is improved by using the boundary accuracy constraint and the abrupt change point detection method of the curve. The method is verified by experiments on a six-cylinder diesel engine in which a single cylinder is fueled with n-butanol. The results show that the method can accurately identify the complete misfire and normal combustion boundaries of n-butanol premixed charge compression ignition under different conditions. The uncertainty of the real value evaluation of the boundary is reduced by more than three times as compared with the conventional single-parameter approach. A map diagram of the n-butanol combustion boundary at 1300 rpm is obtained using this method.

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确定正丁醇预混装药压缩点火失火边界的定量评价方法

本研究提出了一种确定发动机失火边界的新方法。它巧妙地建立了缸后性能与缸内燃烧状态参数之间的非线性映射关系。采用边界精度约束和曲线突变点检测法，提高了失火边界确定的精度。在一台以正丁醇为燃料的六缸柴油机上进行了实验验证。结果表明，该方法能准确识别不同条件下正丁醇预混装药压缩点火的完全失火边界和正常燃烧边界。与传统的单参数方法相比，边界实值计算的不确定性降低了三倍以上。用该方法得到了1300转/分时正丁醇燃烧边界图。

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来源期刊

Fuel Processing Technology 工程技术-工程：化工

CiteScore

13.20

自引率

9.30%

发文量

398

审稿时长

26 days

期刊介绍： Fuel Processing Technology (FPT) deals with the scientific and technological aspects of converting fossil and renewable resources to clean fuels, value-added chemicals, fuel-related advanced carbon materials and by-products. In addition to the traditional non-nuclear fossil fuels, biomass and wastes, papers on the integration of renewables such as solar and wind energy and energy storage into the fuel processing processes, as well as papers on the production and conversion of non-carbon-containing fuels such as hydrogen and ammonia, are also welcome. While chemical conversion is emphasized, papers on advanced physical conversion processes are also considered for publication in FPT. Papers on the fundamental aspects of fuel structure and properties will also be considered.