Experimental evaluation of a rice bran biodiesel – biogas run dual fuel diesel engine at varying compression ratios

Bora, Bhaskor Jyoti; Saha, Ujjwal K.

doi:10.1016/j.renene.2015.11.002

Cited by 160 publications

(55 citation statements)

References 41 publications

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“…Optimum injection timing is reported as 24.5 o CA bTDC [71]. An increase in compression ratio of rice bran biodiesel-based dual fuel engine increases brake thermal efficiency and volumetric efficiency and reduces BSFC and exhaust gas temperature [72].…”

Section: Performance Indicesmentioning

confidence: 99%

“…Advancing the injection timing increases the ignition delay. Bora and Saha [72,73] reported the effect of compression ratio in CI engine using rice bran biodiesel as pilot fuel and biogas as primary fuel at various compression ratios and injection timings. An increase in compression ratio increases cylinder peak pressure and reduces ignition delay.…”

Section: Combustion Indicesmentioning

confidence: 99%

“…An increase in CO2 fraction reduces NOx and smoke but, increases HC and CO emissions [67]. An increase of compression ratio and injection timings in rice bran biodiesel based dual fuel engine reduces CO and HC emissions and increases CO2 and NOx emissions [72,73]. A summary of the effects of increasing biogas flow rate on various combustion, performance, and emission parameters vis-à-vis conventional diesel operation is presented in Table 4.…”

Section: Emission Indicesmentioning

confidence: 99%

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A review on the purification and use of biogas in compression ignition engines

Feroskhan¹,

Ismail²

2017

Int. J. Automot. Mech. Eng.

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Biogas is commonly produced during the decay of organic matter. It is a mixture of methane and some non-combustible gases such as CO2 and H2S. Its viability as a renewable alternative fuel for internal combustion engines can be enhanced by methane enrichment, i.e. removal of the non-combustible constituents. One of the common techniques for using biogas in a compression ignition (CI) engine is to mix it with air in the intake manifold, induct, and compress this mixture and ignite it by injecting a small quantity of diesel or bio-diesel, which is termed as the pilot fuel. This is known as the dual fuel mode. The pilot fuel is injected close to the end of the compression stroke as in a conventional CI engine and the injected fuel quantity depends on the operating condition. An alternative approach is the Homogeneous Charged Compression Ignition (HCCI) mode. Here, a homogeneous mixture of biogas and air is inducted and compressed by the piston until it auto-ignites. While this concept combines the benefits of spark ignition (SI) and CI engines, the onset of combustion cannot be controlled directly. A detailed review of recent research pertaining to biogas purification techniques and operation of CI engines with biogas in dual fuel and HCCI modes is presented in this paper. The effects of various operating parameters on engine performance and emissions, and comparison with conventional diesel fuelled CI engines are discussed. Biogas improves combustion efficiency, NOx, and smoke emissions. However, it reduces brake thermal efficiency, volumetric efficiency, and increases HC and CO emissions. Biogas fuelling of CI engines is recommended for achieving high diesel substitution, especially under high torque operation.

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Section: Performance Indicesmentioning

confidence: 99%

Section: Combustion Indicesmentioning

confidence: 99%

Section: Emission Indicesmentioning

confidence: 99%

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A review on the purification and use of biogas in compression ignition engines

Feroskhan¹,

Ismail²

2017

Int. J. Automot. Mech. Eng.

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“…At high loads, the cylinder gas temperature is high which leads to better evaporation of the fuel. This reduces the ignition delay period [30,31]. The combustion is advanced at high load conditions due to faster vaporisation of fuel and high in-cylinder temperatures.…”

Section: Varying the Compression Ratiomentioning

confidence: 99%

Current trends on combustion control methods using fuel reactivities

Sankaralingam¹,

Venugopal²

2016

Int. J. Automot. Mech. Eng.

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Compression ignition (CI) engines are used in heavy duty engine applications due to their high torque capability and thermal efficiency. However, high NOx and smoke emissions are the challenges in using CI engines. Homogeneous charge compression ignition (HCCI) is one of the best methods to reduce NOx and smoke emissions. However, controlling the combustion for an entire range of operation in HCCI mode is a challenging task. Different methods like fast thermal management (FTM), exhaust gas recirculation (EGR), turbo charging and reactivity controlled compression ignition (RCCI) are reviewed and discussed in this article. RCCI is similar to HCCI, which uses reactivities of two different fuels to control combustion. The combustion objectives of HCCI such as less NOx and soot emission can also be obtained through this method. Combustion control based on reactivities of various fuels (RCCI) is discussed significantly. Fuels that have different reactivities can help to control the combustion phasing and thereby reducing the emission. Two different fuels can be injected together into the manifold or one fuel can be injected in the port and other in the combustion chamber directly for reactivity based combustion control. The technological development in different combustion control methods is reviewed and discussed in this article which is a useful knowledge base for further research investigations. When compared to other combustion control methods, RCCI is found to be advantageous in all perspectives such as cost, flexibility in control, simplicity and wide range of operation.

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“…İçeriğindeki oksijen sayesinde; is, HC ve CO emisyonlarını azaltmakta, fakat NO X emisyonlarını arttırmaktadır [13]. NO X emisyonlarının artsa bile, sera etkisine neden olan zararlı gazlar biyodizelin pilot yakıt olarak kullanılmasıyla azalacak ve bunun sonucunda çevre dostu motorların önemi artacaktır [13,18] [22].…”

Section: Introductionunclassified

Investigation of Cylinder Pressure Variation Using Stochastic Reactor Model in A Biodiesel Pilot Injection Diesel Engine Operated with Natural Gas

Pehlivan¹,

Altın²

2017

J ETA Maritime Sci

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Öz Investigation of Cylinder Pressure Variation Using Stochastic Reactor Model in a Biodiesel Pilot Injection Diesel Engine Operated with Natural Gas AbstractIn maritime sector one of the studies made in order to produce ship engines which consider economic and ecologic properties of energy is dual fuel engines. In dual fuel engines, gas fuel-air mixture is ignited with pilot fuel in the combustion chamber. These engines are mostly produced by transforming diesel engines. Combustion characteristics typically include cylinder pressure, heat release rate and ignition delay. These characteristics are acquired through experimental measurements and theoretical approaches. One of the theoretical approaches used is zero dimentional Stochastic Reactor Model. This approach analyzes compression, combustion and expansion processes using probability density function. An engine simulation software based on this approach has been developed and operates by using detailed and reduced chemical kinetic mechanisms of fuels. In this study, the dual fuel engine operated with biodiesel as a pilot fuel and natural gas as a gas fuel was simulated in two optimum pilot injection parameters and different stochastic particle numbers. It has drawn on the study performed on this engine to show the validity of the model. In the most proper pilot injection parameters, it was observed that simulation and experimental pressure values are compatible with each other in specific error rates.

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Experimental evaluation of a rice bran biodiesel – biogas run dual fuel diesel engine at varying compression ratios

Cited by 160 publications

References 41 publications

A review on the purification and use of biogas in compression ignition engines

A review on the purification and use of biogas in compression ignition engines

Current trends on combustion control methods using fuel reactivities

Investigation of Cylinder Pressure Variation Using Stochastic Reactor Model in A Biodiesel Pilot Injection Diesel Engine Operated with Natural Gas

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