Experimental Research on the Effect of Excess Air Ratio on Turbocharged Lean-Burned CNG Engine

Jian Xi Pang; Da Wei Qu; Xiao Lu; Guang Yang Liu

doi:10.4028/www.scientific.net/AMR.724-725.1422

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HomeAdvanced Materials ResearchAdvanced Materials Research Vols. 724-725Experimental Research on the Effect of Excess Air...

Experimental Research on the Effect of Excess Air Ratio on Turbocharged Lean-Burned CNG Engine

Abstract:

Experimental research on the effect of excess air ratio on dynamic and emission performance of turbocharged lean-burned CNG engine. The 12 test conditions contain engine speeds of 1300r/min, 1600r/min, and 1900r/min, with 25%, 50%, 75%, 100% load separately. When keeping other combustion boundary conditions unchanged, the excess air ratio has little effect on engine output torque at almost all test conditions, but has obvious effect on CH4 and NOx emission. With the excess air ratio increasing, the emission of CH₄ has increased while the NOx emission has decreased significantly. When the λ value is in the range of 1.4-1.45, the emission level is lower.

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Periodical:

Advanced Materials Research (Volumes 724-725)

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1422-1426

DOI:

https://doi.org/10.4028/www.scientific.net/AMR.724-725.1422

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August 2013

Authors:

Jian Xi Pang, Da Wei Qu, Xiao Lu, Guang Yang Liu

Keywords:

CNG Engine, Emission, Excess Air Ratio

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