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首页> 外文期刊>Proceedings of the Institution of Mechanical Engineers >Influential factors' correlation analysis upon common rail system fuel injection quantity for diesel engines
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Influential factors' correlation analysis upon common rail system fuel injection quantity for diesel engines

机译：影响柴油机共轨系统喷油量的相关因素分析

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摘要

The coherence of the fuel injection quantity determines the working stability of the common rail system. The variations in the parameters of the common rail injector have significant influence on coherence of the fuel injection quantity of the system. The bond graphs for the main components of the common rail injector were proposed, respectively, based on the bond graph methodology in this article. The fuel injection quantities of the system at different rail pressures and injection pulse widths had been obtained by numerically solving and programming the obtained state equations in MATLAB. The predicted results of the fuel injection quantity by the model are in excellent agreement with the experimental measurements which were obtained from a test bench. Through the correlation analysis of the influential factors on the fuel injection quantity, the correlation coefficients between the fuel injection quantity and the single influential factor and quadratic influential factor at different rail pressures and injection pulse widths were obtained, respectively. Moreover, the variation characteristics of correlation between the fuel injection quantity and its influential factors had been analyzed in detail. The results show that the nozzle hole diameter and the inlet orifice diameter are the main influential factors on the fuel injection quantity among the selected parameters. The quadratic factors under the action of the parameter itself and the quadratic factors under the interaction between the delivery chamber diameter and nozzle hole diameter, needle seat semi-angle and needle cone semi-angle, nozzle hole diameter and inlet orifice diameter and inlet orifice diameter and outlet orifice diameter have significant effect on the fuel injection quantity, and they are the main influential factors on the fuel injection quantity among the quadratic factors.
机译：燃油喷射量的一致性决定了共轨系统的工作稳定性。共轨喷射器的参数的变化对系统的燃料喷射量的相干性具有显着影响。基于本文的键合图方法，分别提出了共轨喷油器主要部件的键合图。通过在MATLAB中对获得的状态方程进行数值求解和编程，获得了在不同轨压和喷射脉冲宽度下的系统燃油喷射量。该模型对燃油喷射量的预测结果与从试验台获得的实验测量值非常吻合。通过对燃油喷射量影响因素的相关分析，得出了在不同的轨压和喷射脉冲宽度下，燃油喷射量与单一影响因素和二次影响因素之间的相关系数。此外，详细分析了燃油喷射量与其影响因素之间的相关性变化特征。结果表明，在所选参数中，喷嘴孔直径和进气孔直径是影响燃油喷射量的主要因素。在参数自身作用下的二次因子和在输送腔直径与喷嘴孔直径，针座半角和针锥半角，喷嘴孔直径与入口孔直径和入口孔直径之间的相互作用下的二次因子出口孔直径和出口孔直径对燃油喷射量有显着影响，是二次因素中影响燃油喷射量的主要因素。

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