Combustion Characteristics of Electronically Controlled High Pressure Common Rail Diesel Engine Fueled with BiodieselDiesel Blended Fuel

GENG Limin; CHENG Qingbo; CHEN Yang; CHEN Xubo; LI Huimei

doi:10.3969/j.issn.10012222.2017.05.017

Vehicle Engine ›› 2017, Vol. 0 ›› Issue (5) : 88-92. DOI: 10.3969/j.issn.10012222.2017.05.017

Combustion Characteristics of Electronically Controlled High Pressure Common Rail Diesel Engine Fueled with BiodieselDiesel Blended Fuel

GENG Limin1,CHENG Qingbo2,CHEN Yang1,CHEN Xubo1,LI Huimei3

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Abstract

The influence of biodiesel mixing ratio on combustion characteristics was investigated on a 6cylinder supercharged intercooled common rail diesel engine based on the original structure and injection parameters. The results show that the preinjection of engine happens at low load. With the increase of biodiesel mixing ratio, the ignition delay period shortens and the maximum cylinder pressure decreases. In addition, the peak of pressure rise rate and instantaneous heat release rate decrease and their corresponding phase angles advance in the stage of pilot injection. While in the stage of main injection, the engine spray strategy changes to single injection when the load increases. With the increase of biodiesel mixing ratio, the maximum cylinder pressure decreases, the combustion duration shortens and the peak of pressure rise rate slightly increases. Besides, the peak of instantaneous heat release rate decreases and its corresponding phase angle advances. Moreover, the indicated thermal efficiency of biodiesel/diesel blended fuel decreased gradually.

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diesel engine / combustion characteristic / biodiesel

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GENG Limin，CHENG Qingbo,CHEN Yang,CHEN Xubo,LI Huimei. Combustion Characteristics of Electronically Controlled High Pressure Common Rail Diesel Engine Fueled with BiodieselDiesel Blended Fuel[J]. Vehicle Engine. 2017, 0(5): 88-92 https://doi.org/10.3969/j.issn.10012222.2017.05.017