A Study of the Performance Emission and Combustion Characteristics of a DI Diesel Engine Using Waste Cooking Oil Methyl Ester-Ethanol Blends

Author(s):  
R. Anand ◽  
G. R. Kannan ◽  
P. Karthikeyan

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.

2015 ◽  
Vol 773-774 ◽  
pp. 420-424 ◽  
Author(s):  
Nur Fauziah Jaharudin ◽  
Nur Atiqah Ramlan ◽  
Mohd Herzwan Hamzah ◽  
Abdul Adam Abdullah ◽  
Rizalman Mamat

Particulate matter (PM) is one of the major pollutants emitted by diesel engine which have adverse effects on human health. Accordingly, many researches have been done to find alternative fuels that are clean and efficient. Biodiesel is preferred as an alternative source for diesel engine which produces lower PM than diesel fuel. However, the manufacturing cost of biodiesel from vegetable oil is expensive. Therefore, using waste cooking oil (WCO) for biodiesel would be more economical and sustainable solution. The characteristics of direct injection diesel engine in term of the PM have been investigated experimentally in this study. The experiments were conducted using single cylinder diesel engine with different speed (1200 rpm, 1500 rpm, 1800 rpm, 2100 rpm, 2400 rpm) at constant load. PM emission of WCO B100 and diesel fuel was compared and the effect of PM components such as soluble organic fraction (SOF) and soot were studied. The result showed WCO B100 reduces the PM emission at all engine speed. Furthermore, both fuels showed highest reduction of PM concentration at moderate engine speed of 1500 rpm.


2019 ◽  
Vol 8 (2) ◽  
pp. 5013-5016

The present study focuses on incorporation of alternative fuels along with existing internal combustion engines (ICE) without making major modifications. Acetylene has good combustion qualities with auto ignition temperature of 3050C. To increase the use of acetylene as non-petroleum gas in ICE, we carried experimentation on a single cylinder constant speed diesel engine. In this study, direct injection (DI) and constant speed compression ignition (CI) engine tested with pure diesel and diesel-acetylene dual fuel mode. We conducted experiments to study the performance characteristics of DI diesel engine in dual fuel mode by aspirating acetylene gas in the inlet manifold with a flow rate of 2 liters/minute (lpm) of acetylene. Observation recorded that, during idling condition to get the same power output when aspirated with the 2 lpm acetylene, 3.5% less amount of diesel required. For maximum load 9% less amount of diesel required. And 12% less amount of diesel required during partial loading condition. Also, the performance shows increased trend in indicated power and brake power by 1-2%. It was also observed that use of acetylene gas has more influence on emission of CO2. Emission results showed that without a catalytic convertor, 8% decreased amount of CO2 released during idling condition. Similar emission results of engine found during full load condition when acetylene used along with diesel, supporting the health of environment for reduction of global warming.


Author(s):  
V. Anandram ◽  
S. Ramakrishnan ◽  
J. Karthick ◽  
S. Saravanan ◽  
G. LakshmiNarayanaRao

In the present work, the combustion, performance and emission characteristics of sunflower oil, sunflower methyl ester and its blends were studied and compared with diesel by employing them as fuel in a single cylinder, direct injection, 4.4 KW, air cooled diesel engine. Emission measurements were carried out using five-gas exhaust gas analyzer and smoke meter. The performance characteristics of Sunflower oil, Sunflower methyl ester and its blends were comparable with those of diesel. The components of exhaust such as HC, CO, NOx and soot concentration of the fuels were measured and presented as a function of load and it was observed that the blends had similar performance and emission characteristics as those of diesel. NOx emissions of sunflower oil methyl ester were slightly higher than that of diesel but that of sunflower oil was slightly lower than that of diesel. With respect to the combustion characteristics it was found that the biofuels have lower ignition delay than diesel. The heat release rate was very high for diesel than for the biofuel.


Fuel ◽  
2019 ◽  
Vol 235 ◽  
pp. 832-837 ◽  
Author(s):  
R. Dhanasekaran ◽  
S. Ganesan ◽  
B. Rajesh Kumar ◽  
S. Saravanan

Author(s):  
H. Sharon ◽  
Joel Jackson R. ◽  
Prabha C.

Feed stock cost and NOX emission are the major barriers for commercialization of biodiesel. Waste cooking oil is well identified as one of the cheapest feed stocks for biodiesel production. This chapter reduces NOX emission of waste cooking oil biodiesel. Test fuel blends are prepared by mixing diesel (20 to 50 v/v%), butanol (5 v/v%), and waste cooking oil biodiesel (45 to 75 v/v%). Fuel properties of waste cooking oil biodiesel are enhanced due to addition of diesel and butanol. Brake specific energy consumption of the blends is higher than diesel fuel. Harmful emissions like carbon monoxide, nitrous oxide, and smoke opacity are lower for blends than diesel fuel. Increasing biodiesel concentration in blend also reduces hydrocarbon emission to a significant extent. The obtained results justify the suitability of proposed cheap blends for diesel engine emission reduction.


2014 ◽  
Vol 18 (1) ◽  
pp. 217-228 ◽  
Author(s):  
Panneer John ◽  
Karuppannan Vadivel

In the recent research, as a result of depletion of world petroleum reserves, considerable attention has been focused on the use of different alternative fuels in diesel engines. The present work aims to ensure the possibility of adding ethanol as an additive with animal fat biodiesel that is tested as an alternative fuel for diesel in a CI engine. In this study, biodiesel is obtained from waste pork lard by base-catalyzed transesterification with methanol when potassium hydroxide as catalyst. 2.5%, 5% and 7.5% by volume of ethanol is blended with neat biodiesel in order to improve performance and combustion characteristics of a diesel engine. The experimental work is carried out in a 3.7 kW, single cylinder, naturally aspirated, water cooled, direct injection diesel engine for different loads and at a constant speed of 1500 rpm. The performance, emission and combustion characteristics of biodiesel-ethanol blends are investigated by comparing them with neat biodiesel and standard diesel. The experimental test results showed that the combustion and performance characteristics improved with the increase in percentage of ethanol addition with biodiesel. When compared to neat biodiesel and standard diesel, an increase in brake thermal efficiency of 5.8% and 4.1% is obtained for BEB7.5 blend at full load of the engine. With the increase in percentage of ethanol fraction in the blends, peak cylinder pressure and the corresponding heat release rate are increased. Biodiesel-ethanol blends exhibit longer ignition delay and shorter combustion duration when compared to neat biodiesel. Optimum reduction in carbon monoxide, unburned hydrocarbon and smoke emission are attained while using BEB5 blend at full load of the engine. However, there is an adverse effect in case of nitrogen oxide emission.


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