The main challenge on the fueling of pure hydrogen in the automotive vehicles is the limitation in the hydrogen separation from the product of steam reforming and gasification plants and the storage issues. On the other hand, hydrogen fueling in automotive engines has resulted in uncontrolled combustion. These are some of the factors which motivated for the fueling of raw syngas instead of further chemical or physical processes. However, fueling of syngas alone in the combustion chamber has resulted in decreased power output and increased in brake specific fuel consumption. Methane augmented hydrogen rich syngas was investigated experimentally to observe the behavior of the combustion with the variation of the fuel-air mixture and engine speed of a direct-injection spark-ignition (DI SI) engine. The molar ratio of the high hydrogen syngas is 50% H₂ and 50% CO composition. The amount of methane used for augmentation was 20% (V/V). The compression ratio of 14:1 gas engine operating at full throttle position (the throttle is fully opened) with the start of the injection selected to simulate the partial DI (180° before top dead center (BTDC)). The relative air-fuel ratio (λ) was set at lean mixture condition and the engine speed ranging from 1500 to 2400 revolutions per minute (rpm) with an interval of 300 rpm. The result indicated that coefficient of variation of the indicate mean effective pressure (COV of IMEP) was observed to increase with an increase with λ in all speeds. The durations of the flame development and rapid burning stages of the combustion has increased with an increase in λ. Besides, all the combustion durations are shown to be more sensitive to λ at the lowest speed as compared to the two engine speeds.

汽车中纯氢燃料的主要挑战是从蒸汽重整和气化装置的产品中分离氢以及存储问题的局限性。另一方面，在汽车发动机中使用氢燃料导致燃烧失控。这些是一些原燃料的来源，而不是进一步的化学或物理过程。但是，仅在燃烧室内对合成气进行燃料供应会导致功率输出下降，并且制动器的特定燃料消耗增加。实验研究了甲烷增强的富氢合成气，以观察随燃油-空气混合物和直喷式火花点火（DI SI）发动机转速的变化而发生的燃烧行为。高氢合成气的摩尔比为50％H_2个和50％的一氧化碳成分。用于增强的甲烷量为20％（V / V）。14：1燃气发动机的压缩比在全节气门位置（节气门完全打开）下运行，选择开始喷射以模拟部分DI（上死点（BTDC）之前180°）。相对空燃比（λ）设置为稀混合气条件，发动机转速为每分钟1500至2400转（rpm），间隔为300 rpm。结果表明，在所有速度下，指示平均有效压力（IMEP的COV）的变化系数均随λ的增加而增加。火焰发展的持续时间和燃烧的快速燃烧阶段随着λ的增加而增加。除了，