STUDIES ON PERFORMANCE, COMBUSTION AND EXHAUST EMISSION CHARACTERISTICS OF COPPER COATED TWO STROKE SPARK IGNITION ENGINE WITH ALCOHOL BLENDED GASOLINE
Published In: INTERNATIONAL CONFERENCE ON ADVANCES IN MECHANICAL, AERONAUTICAL AND PRODUCTION TECHNIQUES
Author(s): S.NARASIMHA KUMAR
Abstract: investigation were carried out to evaluate the performance of two-stroke, single cylinder spark ignition (SI) engine with alcohol blended (80% gasoline, 10% ethanol and 10% methanol by volume) having copper coated combustion chamber [copper-(thickness, 300 μ) coated on piston crown, and inner side of cylinder head]. Performance parameters [brake thermal efficiency, exhaust gas temperature and volumetric efficiency] and Exhaust emissions of CO and UBHC were determined at various values of brake mean effective pressure of the engine, combustion characteristics [peak pressure, maximum rate of pressure rise, time of occurrence of peak pressure and maximum heat release] and aldehydes were measured by wet chemical method at full load operation of the engine. A microprocessor-based analyzer was used for the measurement of CO/UBHC in the exhaust of the engine. Comparative studies were made on performance parameters, combustion characteristics and exhaust emissions with conventional and copper
- Publication Date: 03-Aug-2014
- DOI: 10.15224/978-1-63248-008-8-81
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THE ROLE OF MAGNESIUM OXIDE ON THE MECHANICAL PROPERTIES OF Y-TZP CERAMIC
Published In: INTERNATIONAL CONFERENCE ON ADVANCES IN MECHANICAL, AERONAUTICAL AND PRODUCTION TECHNIQUES
Author(s): D. RAGURAJAN, M. GOLIESKARDI
Abstract: An investigation has been carried out into the effects of magnesium oxide additions in the 0.1 to 1.0 wt% range on the properties and behavior of Y-TZP. All samples have been sintered over the temperature range of 1200°C to 1500°C with a ramp rate of 10°C/ minute and 2 hours of holding time. Upon reaching the peak temperature, the sintering temperature was immediately brought down to a holding temperature of 1250°C and held for 4 hours. Green samples were compacted by uniaxial pressing and cold isostatically pressed at 200 MPa. The results show that the addition of 0.3 wt% MgO was effective in aiding densification (~99% theoretical density). The MgO addition to the Y-TZP matrix also displayed an increment of flexural strength as the content increased. Bulk density and Vickers hardness show the beneficial effect of MgO in aiding the densification of Y-TZP ceramics.
- Publication Date: 03-Aug-2014
- DOI: 10.15224/978-1-63248-008-8-82
- Views: 0
- Downloads: 0