In this study, canola oil has been selected for the test on a diesel engine and its
suitability as an alternative fuel has been examined. To decrease the high viscosity of
canola oil, the effect of temperature on viscosity has been researched. Then the fuel
delivery system has been modified to heat canola oil before injecting the oil into the
combustion chamber. Also, ethanol has been tested as an additive by blending with
canola oil. An experimental setup has been installed according to standards to carry
out tests. The set up has been controlled with a computer to take measurements more
precisely and to perform experiment automatically. Experimental investigations
have been conducted on a four cylinder, direct injection diesel engine.
Full load-variable speed tests have been conducted to evaluate engine performance
parameters. In addition 13 mode ESC test cycle has been performed to determine the
exhaust emissions. Engine performance and emissions characteristics of canola oil
and canola-ethanol blend containing 30% ethanol have been compared with those of
baseline diesel fuel. Experimental results show that engine performance decreased
for canola oil. Addition of ethanol into canola oil has been noticed to improve
performance a little with respect to pure canola oil. Although, maximum performance has been obtained with diesel fuel, minimum specifics energy cost is
obtained with canola oil. It has been observed that hydrocarbon (HC) emissions
decrease with canola oil, blending ethanol with canola oil increase HC emissions and
maximum values are read for diesel fuel. Carbon monoxide (CO) emissions have
been observed to be the highest for canola oil but blending ethanol has a decreasing
effect on CO emissions. As for particulate matter (PM), use of canola oil has been
seen to be more pollutant than diesel but adding ethanol in canola reduces PM
emissions significantly.
| Identifer | oai:union.ndltd.org:METU/oai:etd.lib.metu.edu.tr:http://etd.lib.metu.edu.tr/upload/2/12609954/index.pdf |
| Date | 01 September 2008 |
| Creators | Ozdemir, Ali |
| Contributors | Bayka, Ahmet Demir |
| Publisher | METU |
| Source Sets | Middle East Technical Univ. |
| Language | English |
| Detected Language | English |
| Type | M.S. Thesis |
| Format | text/pdf |
| Rights | To liberate the content for METU campus |
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