预喷射策略对氨/柴油双燃料发动机低负荷燃烧和排放特性影响的试验研究
Experimental Study on the Effects of pilot injection Strategy on Combustion and Emission Characteristics of Ammonia/Diesel Dual Fuel Engineunder low load
随着碳中和概念的兴起，无碳燃料氨正受到内燃机研究人员的广泛关注。氨/柴油双燃料发动机能够有效的克服氨在发动机上着火难的问题，是降低碳排放的有效措施。基于一台单缸柴油机，在1200 r•min-1以及30%负荷的条件下进行了柴油引燃氨模式试验，系统研究了氨预混比、预喷射比例和预喷射正时对氨/柴油双燃料发动机燃烧过程、性能和排放特性的影响规律。研究发现，预喷射策略能够提高氨预混比例上限，降低循环变异系数，放热率由单级高温放热转为双级高温放热。随着氨预…查看全部>>
With the rise of the carbon neutrality concept, carbon-free fuel ammonia has attracted extensive attention from internal combustion engine researchers. The ammonia/diesel dual fuel engine can effectively overcome the ignition difficulty of ammonia on the engine and is an effective measure to reduce carbon emissions. Based on a single-cylinder diesel engine, diesel-ignited ammonia combustion experiments were conducted under conditions of 1200 r•min-1 and 30% …查看全部>>
郎茂春;苏岩;王耀东;王本有;陈松;
TK421
ammonia/diesel dual-fuel pilot injection ratio pilot injection tim-ing effective expansion efficiency heat transfer loss
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