EXHAUST EMISSIONS OF METHANOL AND ETHANOL-UNLEADED GASOLINE BLENDS IN A SPARK-IGNITION ENGINE

Abstract

In this study, the effect of unleaded gasoline and unleaded gasoline lended with 5% and 10% of ethanol or methanol on the performance nd exhaust emissions of a spark-ignition engine were experimentally nvestigated. The engine tests were performed by varying the engine peed between 1000 and 4000 rpm with 500 rpm period at threefourth hrottle opening position. The results showed that brakespecific fuel consumption increased while brake thermal efficiency, emissions of carbon monoxide (CO) and hydrocarbon (HCs) decreased with methanol-unleaded gasoline and ethanol-unleaded gasoline blends. It was found that a 10% blend of ethanol or methanol with unleaded gasoline works well in the existing design of engine and parameters at which engines are operating.

Keywords

Dates

  • Submission Date2011-12-07
  • Revision Date2012-01-14
  • Acceptance Date2012-02-04

DOI Reference

10.2298/TSCI111207034A

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