Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
6656894 | Fuel Processing Technology | 2015 | 7 Pages |
Abstract
Oxygenated compounds (alcohols and ethers) have attracted attention as additives to gasoline to improve fuel specifications. These have a high octane number and contain oxygen. So, they decrease the knocking tendency and lead to the lowering of some exhaust emissions such as carbon monoxide (CO). In this study, methyl tertiary butyl ether (MTBE), a well-known oxygenate, was considered as a gasoline additive. The effects of MTBE-blended fuels with various blending rates (0, 5, 10, 20, and 30Â vol.%) on engine performance and exhaust emissions were investigated using a Ricardo/Hydra, single cylinder, four-stroke spark ignition, fuel injection engine. The experiments were performed at engine speeds of 1500-5000Â rpm with increments of 500Â rpm at full load and a compression ratio of 10:1. The result of the engine tests indicated that engine torque was similar or close to unleaded gasoline (MTBE0) at MTBE percentages up to 10%. Moreover, MTBE blends improved brake thermal efficiency and decreased brake specific energy consumption. Regarding exhaust emissions, CO and HC emissions reduced with the increase of MTBE content in the blended fuel, but HC emissions did not decrease as much as CO emissions did. Furthermore, the concentration of NO increased for MTBE blends owing to oxygen enrichment.
Keywords
RVPLHVBMEPBSECethyl tertiary butyl etherABDCbBDCMBTETBEMTBEBSFCEFIUHCaTDCBefore bottom dead centerbTDCNOxlower heating valueResearch Octane Numbernitrogen oxideNitrogen oxidesafter top dead centerbrake mean effective pressurebrake specific fuel consumptionspark ignitionMaximum Brake TorqueReid Vapor PressureRONCrank Anglemotor octane numberEngine performanceFAMEbefore top dead centerfatty acid methyl estersMethyl tertiary butyl etherBrake Specific Energy Consumptioncarbon monoxideSpark ignition engineMONhydrocarbonUnburned HydrocarbonExhaust emissions
Related Topics
Physical Sciences and Engineering
Chemical Engineering
Chemical Engineering (General)
Authors
Tolga Topgül,