Recent studies concluded that the use of ammonia in SI engines is possible thanks to an ignition booster or promoter. In this paper, the improvement of premixed ammonia/air combustion for internal combustion engines is studied as a function of performance and exhaust pollutants in a Spark-Assisted Compression Ignition single-cylinder engine, which supports a higher compression ratio (CR). For the first time, pure NH₃ combustion was performed over a large range of engine operating conditions. The study concludes that neat ammonia can be used over a large operating range, here driven by the intake pressure, using a classical ignition device with a CR of 14–17 at 1000 rpm. The comparison with previous data obtained in a current single-cylinder SI engine clearly shows the potential of this engine mode, even for very low loads and various engine speeds (650, 1000, 2000 rpm), in spite of an initial aerodynamic that is not optimized to enhance flame-turbulence interaction. Kinetic simulations provide some explanations about exhaust emission behaviour, especially unburnt NH₃, H₂, NO_x and N₂O.

最近的研究得出结论，由于点火助推器或促进剂，可以在 SI 发动机中使用氨。在本文中，在支持更高压缩比 (CR) 的火花辅助压缩点火单缸发动机中，研究了内燃机预混氨/空气燃烧的改进作为性能和排气污染物的函数。第一次，纯 NH ₃燃烧是在大范围的发动机运行条件下进行的。该研究得出的结论是，纯氨可以在很大的工作范围内使用，这里由进气压力驱动，使用 1000 rpm 时 CR 为 14-17 的经典点火装置。与在当前单缸 SI 发动机中获得的先前数据的比较清楚地显示了这种发动机模式的潜力，即使是在非常低的负载和各种发动机转速（650、1000、2000 rpm）下，尽管初始空气动力学不是优化以增强火焰-湍流相互作用。动力学模拟提供了一些关于废气排放行为的解释，尤其是未燃烧的 NH ₃、H ₂、NO _x和 N ₂ O。