Combustion process decoupling of a diesel/natural gas dual-fuel engine at low loads
作者： Zhongshu Wang , Guizhi Du , Dan Wang , Yun Xu , Mingyang Shao
DOI: 10.1016/J.FUEL.2018.05.152
关键词:
摘要: Abstract The combustion process of diesel/natural gas dual-fuel engine is complicated. In order to decouple the natural (NG) and diesel, a wide range NG from zero 75%, by increasing flow rate at constant air diesel consumption were studied. A detailed analysis based on heat release data has been carried out better understand effect underlying mechanism two fuel processes. method calculating ratio total through comparing between mode different quantities original was proposed. tested 6-cylinder turbocharged intercooler engine. Several parameters, including in-cylinder pressure, temperature rate, analyzed under 1335 rpm, 10% load (A10) condition 25% (A25) condition. results show that curves have only one peak firstly, then transform into peaks, change quasi-single last with increase A10 when Tinj 7°CA BTDC. maximum around spray 25.4% premixed occupies main process, flame propagation 75.4% (PES 73%) part process. similar discussion A25 BTDC about advancing retarding conducted.
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