Effect of Equivalence Ratio on CNG Engine Power and Emission

HUANG Ya; LIN Xuedong; ZHANG Fujun; YU Lijuan

doi:10.3969/j.issn.1001-2222.2018.01.007

Vehicle Engine ›› 2018, Vol. 0 ›› Issue (1) : 39-44. DOI: 10.3969/j.issn.1001-2222.2018.01.007

Effect of Equivalence Ratio on CNG Engine Power and Emission

HUANG Ya¹,LIN Xuedong²,ZHANG Fujun¹,YU Lijuan¹

Author information +

History +

Abstract

In order to study the power and NO emission performance of incylinder direct leanburn CNG engine under different equivalent ratios, the engine simulation model was established by using AVL Fire. The initial parameters and boundary conditions of simulation were determined by the prototype experiment. The internal relationships between incylinder microscopic threedimensional physical field and combustion pressure and between combustion heat release rate and NO production were found through the simulation. Then the factors of NO rapid generation in CNG engine were summarized and the optimal equivalent ratio range that could improve the engine power and reduce the NO emission was put forward.

Key words

CNG engine / equivalence ratio / lean burn / flame propagation / nitrogen oxide

Cite this article

EndNote

Ris (Procite)

Bibtex

Download Citations

HUANG Ya,LIN Xuedong,ZHANG Fujun,YU Lijuan. Effect of Equivalence Ratio on CNG Engine Power and Emission[J]. Vehicle Engine. 2018, 0(1): 39-44 https://doi.org/10.3969/j.issn.1001-2222.2018.01.007