Study on Fuel Economy and Exhaust Emission of Lean-Burn PFI Engines

Abstract:

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Lean-burn engines operate at a very lean air-to-fuel (A/F) ratio under light-load and part-load regions, in order to analyze the effect of engine speed and load on the BSFC (Break Specific Fuel Consumption) and exhaust emission of Lean-burn engine, an experimental research was conducted on a 4 cylinder lean-burn gasoline engine using different A/F ratios. The results show that the CO emission level decrease significantly, HC emission level becomes lower at the same A/F ratio, while the NOx emission increases, hence, advanced technologies are needed to carry out the NOx storage and purge operations in the lean-burn engines. Additionally, the experiment also reveals that the BSFC becomes lower as the engine speed and load increase.

Info:

Periodical:

Edited by:

Han Zhao

Pages:

1749-1752

DOI:

10.4028/www.scientific.net/AMM.130-134.1749

Citation:

X. B. Yuan et al., "Study on Fuel Economy and Exhaust Emission of Lean-Burn PFI Engines", Applied Mechanics and Materials, Vols. 130-134, pp. 1749-1752, 2012

Online since:

October 2011

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Price:

$35.00

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