Combustion Performance and Exhaust Emission of DI Diesel Engine Using Various Sources of Waste Cooking Oil

The growing environmental concerns and the depletion of petroleum reserves have caused the development of alternative fuels. Biodiesel and alcohols are receiving increasing attention as alternative fuels for diesel engines due to well oxygenated, renewable fuels. In this study, a single cylinder, naturally aspirated, direct injection diesel engine has been experimentally investigated using ethanol-blended waste cooking oil methyl ester. Various proportion of biodiesel-ethanol blends were used in stability test at the different temperatures from 10 °C to 40 °C in the increment of 10°C. Based on the stability tests and improvement in fuel properties, B90E10 (90% biodiesel and 10% ethanol) and B80E20 (80% biodiesel and 20% ethanol) were selected for this investigation. Test results revealed that the improved engine characteristics with the use of B9E10 especially in comparison with B80E20. Reduction in brake thermal efficiency by 3.8% and slightly higher brake specific energy consumption of 15.1% were observed with B90E10 when compared to diesel at 100% load condition. Carbon monoxide, unburnt hydrocarbon, nitric oxide and smoke emission of B90E10 were reduced by 0.09% by vol., 10 ppm, 187 ppm and 12.9%, respectively compared to diesel. B90E10 exhibited lower peak pressure of 70.5 bar, slightly longer ignition delay of 14.2 °CA, and combustion duration of 43.3 °CA was also observed at 100% load condition.

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Comparative Analysis of Performance and Emission Characteristics of Diesel Engine with Biodiesel Prepared from Waste Cooking Oil and Pongamia Oil

Applied Mechanics and Materials ◽

10.4028/www.scientific.net/amm.787.787 ◽

2015 ◽

Vol 787 ◽

pp. 787-791

Author(s):

R. Prakash ◽

K. Adithyan ◽

V. Adithya

Keyword(s):

Diesel Engine ◽

Alternative Fuels ◽

Substantial Reduction ◽

Waste Cooking Oil ◽

Exhaust Emission ◽

Particulate Emission ◽

Performance And Emission ◽

Cooking Oil ◽

Pongamia Oil ◽

The Impact

In view of the fast depletion of fossil fuels, the search for alternative fuels has become inevitable, due to huge demand of diesel for transportation sector, captive power generation and agricultural sector, the biodiesel is being viewed as a substitute for diesel. The aim of the present work is to focus on the work done in the area of production of biodiesel from Pongamia oil and waste cooking oil and the characterization of properties of various bio diesel blends in single cylinder four stroke diesel engine. The main problem with biodiesel is its higher viscosity which leads to formation of gums that would affect its performance. The work includes the impact analysis of biodiesel prepared from Pongamia oil and waste cooking oil on engine performance and exhaust emission. The results obtained are compared with the performance parameters of diesel. The experiment is carried out in DI diesel engine equipped with 5 gas analyzer and smoke meter. From the test result, it is found that the use of biodiesel leads to the substantial reduction in particulate emission, CO emissions accompanying with the imperceptible power loss, the increase in fuel consumption and the increase in NOx emission on conventional diesel engine with no or fewer modification. From the results, it can be observed that biodiesel likely to replace diesel as a source of fuel in near future.

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