Journal Published Online: 05 March 2019
Volume 48, Issue 1

A Comparison Study on Emission Characteristics of Using Higher Alcohol Oxygenates with Gasoline in a Multipoint Fuel Injection Spark-Ignition Engine

CODEN: JTEVAB

Abstract

Usage of oxygenates has become common practice for improving gasoline properties. In this study, two oxygenates, one from the ether family (diisopropyl ether (DIPE)) and one from the alcohol family (n-butanol), were mixed with gasoline at 5, 15, and 25 % by volume to get D5, D15, D25, N5, N15, and N25 blends. Blends of DIPE (D5, D15, and D25) and n-butanol (N5, N15, and N25) were tested in a four-stroke four-cylinder multipoint fuel injection spark-ignition engine at 0.33 MPa (brake mean effective pressure) over a speed range of 1,400 to 2,800 r/min with 200 r/min increments. The performance and emission behavior obtained from blends of DIPE and n-butanol were compared with base gasoline. Lower hydrocarbon and carbon monoxide emissions are observed for oxygenate blends than for gasoline. However, blends of DIPE and butanol emitted higher nitrogen oxide (NOx) than gasoline. The retarded spark timing from 14° before top-dead-center (bTDC) to 12° bTDC reduced NOx emissions from blends. The study also concludes that DIPE is a suitable and comparable oxygenate additive to n-butanol and offers high knock resistance equal to n-butanol.

Author Information

Dhamodaran, Gopinath
Department of Mechanical Engineering, Velammal Engineering College, Chennai, India
Esakkimuthu, Ganapathy Sundaram
Department of Automobile Engineering, Velammal Engineering College, Chennai, India
Pages: 13
Price: $25.00
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Stock #: JTE20180716
ISSN: 0090-3973
DOI: 10.1520/JTE20180716