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Dataset for comparison between single and double pilot injection in diesel-natural gas dual fuel engine

机译：柴油-天然气双燃料发动机单引燃和双引燃喷射对比数据集

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摘要

The present data article is based on the research work which investigates the low-temperature combustion (LTC) in a dual fuel light duty engine. The LTC mode was activated by means of double pilot injection to control the energy release rate in the first combustion stage, thereby minimizing the increase of the rate of pressure and allowing the operation under LTC. This data article presents all the data which supports the choice for double pilot injection vs single pilot injection for that research. In this experimental work the engine was fueled with diesel, in full-diesel (FD) mode, and in dual fuel (DF) mode with natural gas and natural gas – hydrogen mixtures as main fuel. In DF mode the pilot diesel fuel was injected both with a single and a double injection at the same engine speed and torque. The pressure cycle in one of the four cylinders, the intake manifold pressure and the injector current signal were acquired on a crank angle basis for 100 consecutive engine cycles. Analysis of combustion rate, maximum pressure rise and fuel/air flow rate were performed. The data set, which also includes some engine control parameters, the combustion chamber geometry and some injector features, can potentially be reused to numerically model the combustion phenomena and, in particular, to investigate the effect on the ignition phase of combustion in LTC, also considering the variability from cycle to cycle.
机译：本数据文章基于对双燃料轻型发动机中的低温燃烧（LTC）进行研究的研究工作。 LTC模式通过双引燃喷射激活，以控制第一燃烧阶段的能量释放速率，从而使压力速率的增加最小化，并允许在LTC下运行。本数据文章介绍了所有支持该研究选择双引燃喷射还是单引燃喷射的数据。在此实验工作中，发动机以柴油，全柴油（FD）模式和双燃料（DF）模式为燃料，并以天然气和天然气-氢气混合物为主要燃料。在DF模式下，引燃柴油以相同的发动机转速和扭矩进行单次和双次喷射。在100个连续的发动机循环中，以曲柄角为基础获取四个气缸之一中的压力循环，进气歧管压力和喷射器电流信号。进行了燃烧率，最大压力升高和燃料/空气流速的分析。该数据集还包括一些发动机控制参数，燃烧室几何形状和一些喷射器特征，可以潜在地重新用于对燃烧现象进行数值模拟，尤其是研究LTC对燃烧着火阶段的影响，考虑周期之间的差异。

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