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

Xing Bo Yuan; Zhi Jun Li; Shao Shu Chen; Ying Zhang

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

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HomeApplied Mechanics and MaterialsApplied Mechanics and Materials Vols. 130-134Study on Fuel Economy and Exhaust Emission of...

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

Abstract:

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.

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Periodical:

Applied Mechanics and Materials (Volumes 130-134)

Pages:

1749-1752

DOI:

https://doi.org/10.4028/www.scientific.net/AMM.130-134.1749

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Online since:

October 2011

Authors:

Xing Bo Yuan, Zhi Jun Li, Shao Shu Chen, Ying Zhang

Keywords:

A/F Ratio, BSFC, Exhaust Emission, Lean-Burn

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