Engine emissions and combustion analysis of biodiesel from East African countries
Environmental, availability and financial problems associated with fossil fuels encourage the manufacture and use of biodiesel. In this study, vegetable oil was extracted from Jatropha curcas seeds sourced from Kenya and Tanzania. A two-step acid–base catalytic transesterification process was us...
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| Format: | Article |
| Language: | English |
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Academy of Science of South Africa
2014-03-01
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| Series: | South African Journal of Science |
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| Online Access: | https://www.sajs.co.za/article/view/3745 |
| _version_ | 1818650257504862208 |
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| author | Paul Maina |
| author_facet | Paul Maina |
| author_sort | Paul Maina |
| collection | DOAJ |
| description | Environmental, availability and financial problems associated with fossil fuels encourage the manufacture and
use of biodiesel. In this study, vegetable oil was extracted from
Jatropha curcas
seeds sourced from Kenya
and Tanzania. A two-step acid–base catalytic transesterification process was used to produce biodiesel
because of the amount of free fatty acids present in the oil. The test rig used in the experiments was an Audi,
1.9-litre, turbocharged direct injection, compression ignition engine. Emissions were measured using an
Horiba emission analyser system while combustion data was collected by a data acquisition system, from
which cylinder pressure and rate of heat release of the test engine in every crank angle were calculated.
The two biodiesels showed better emission characteristics than the fossil diesel included in the tests for
comparison purposes. Cylinder pressure and heat release of the biodiesel were also within acceptable
ranges. However, the emission and combustion characteristics differed between the two biodiesels – a result
likely related to their different origins. These findings prove that the source of biodiesel is an important factor
to consider. |
| first_indexed | 2024-12-17T01:47:21Z |
| format | Article |
| id | doaj.art-6efc1c82bbae48a88220751e559559e5 |
| institution | Directory Open Access Journal |
| issn | 1996-7489 |
| language | English |
| last_indexed | 2024-12-17T01:47:21Z |
| publishDate | 2014-03-01 |
| publisher | Academy of Science of South Africa |
| record_format | Article |
| series | South African Journal of Science |
| spelling | doaj.art-6efc1c82bbae48a88220751e559559e52022-12-21T22:08:09ZengAcademy of Science of South AfricaSouth African Journal of Science1996-74892014-03-011103/41810.1590/sajs.2014/201300973745Engine emissions and combustion analysis of biodiesel from East African countriesPaul Maina01 Department of Mechanical Engineering, Tshwane University of Technology, Pretoria, South Africa 2 Department of Mechanical and Production Engineering, Moi University, Eldoret, KenyaEnvironmental, availability and financial problems associated with fossil fuels encourage the manufacture and use of biodiesel. In this study, vegetable oil was extracted from Jatropha curcas seeds sourced from Kenya and Tanzania. A two-step acid–base catalytic transesterification process was used to produce biodiesel because of the amount of free fatty acids present in the oil. The test rig used in the experiments was an Audi, 1.9-litre, turbocharged direct injection, compression ignition engine. Emissions were measured using an Horiba emission analyser system while combustion data was collected by a data acquisition system, from which cylinder pressure and rate of heat release of the test engine in every crank angle were calculated. The two biodiesels showed better emission characteristics than the fossil diesel included in the tests for comparison purposes. Cylinder pressure and heat release of the biodiesel were also within acceptable ranges. However, the emission and combustion characteristics differed between the two biodiesels – a result likely related to their different origins. These findings prove that the source of biodiesel is an important factor to consider.https://www.sajs.co.za/article/view/3745biodieselcombustion characteristicsemissionsfuelJatropha |
| spellingShingle | Paul Maina Engine emissions and combustion analysis of biodiesel from East African countries South African Journal of Science biodiesel combustion characteristics emissions fuel Jatropha |
| title | Engine emissions and combustion analysis of biodiesel from East African countries |
| title_full | Engine emissions and combustion analysis of biodiesel from East African countries |
| title_fullStr | Engine emissions and combustion analysis of biodiesel from East African countries |
| title_full_unstemmed | Engine emissions and combustion analysis of biodiesel from East African countries |
| title_short | Engine emissions and combustion analysis of biodiesel from East African countries |
| title_sort | engine emissions and combustion analysis of biodiesel from east african countries |
| topic | biodiesel combustion characteristics emissions fuel Jatropha |
| url | https://www.sajs.co.za/article/view/3745 |
| work_keys_str_mv | AT paulmaina engineemissionsandcombustionanalysisofbiodieselfromeastafricancountries |