Effect of start injection toward combustion, performances and emision characteristic of B20 biodiesel fuel
The utilization of the palm oil-based fuel in biodiesel fuel as alternative fuel for diesel engine has been implemented in Malaysia. However, the utilization of biodiesel is problematic because the low output power is due to incomplete combustion and incorrect vaporization characteristic. In t...
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| Format: | Thesis |
| Language: | English English English |
| Published: |
2020
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| Subjects: | |
| Online Access: | http://eprints.uthm.edu.my/1149/1/24p%20PUTERA%20MOHAMAD%20ADAM%20AMAT%20AZMAN.pdf http://eprints.uthm.edu.my/1149/2/PUTERA%20MOHAMAD%20ADAM%20AMAT%20AZMAN%20COPYRIGHT%20DECLARATION.pdf http://eprints.uthm.edu.my/1149/3/PUTERA%20MOHAMAD%20ADAM%20AMAT%20AZMAN%20WATERMARK.pdf |
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| Summary: | The utilization of the palm oil-based fuel in biodiesel fuel as alternative fuel
for diesel engine has been implemented in Malaysia. However, the utilization of
biodiesel is problematic because the low output power is due to incomplete
combustion and incorrect vaporization characteristic. In this research, a small
compression ignition engine with 320 cc four strokes direct injection has been used
to carry out to characterize the combustion of biodiesel fuel. The performance and
exhaust emission have been tested with blended B10 biodiesel (10% POME and
90% pure diesel) and compared with B20 biodiesel (20% POME and 80% pure
diesel). The engine was tested under full load steady-state conditions at 1800rpm to
3400rpm with variable start of injection strategy (SOI). Experimental performance
measurements including exhaust emissions, cylinder pressure, heat release rate, and
ignition delay were conducted. As a result, the use of B20 fuel showed a reduction
on engine performances; BT (0.3%), BTE (1.44%), increase of BSFC (up to 3.75%)
in comparison with B10 fuels at 2400rpm engine speed. Advancing 1°CA BTDC of
SOI strategy in B20 fuel is recommended, where observed an improvement of
approximately 3.32% (BTE), 3.23% (BSFC) has been recorded. However, advancing
the SOI in B20 fuel increases the Rate of Heat Release (ROHR). The in-cylinder
pressure value is also reduced with rise of ROPR. The experimental results prove
that the start of injection (SOI) strategy of the fuel has an effect on performance and
emission where by advancing SOI by 1°CA bTDC improved 3.3% of BTE.
Meanwhile, BSFC is reduced by 3.2% with advancing SOI by 1°CA bTDC. The
NOX emission was decreased by 35.67% (approximately 10.21 g/kWh) with
advancing SOI by 1°CA bTDC compared to the default SOI which is at 14°CA
bTDC. Therefore, advancing the SOI has the potential to improve the engine
performances compared to B10 fuels. |
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