Today, Automobile industries are focusing on global
warming and saving non-renewable sources.
Bio diesel is one of the best solution of above mentioned
Since it is a renewable energy, produce less emission
and it is successfully implemented on existing systems
What is Biodiesel?
An low-emissions, high lubricating alternative diesel
fuel produced from veg.oil / animal fats
Can be combined at any level with petroleum diesel to
fuel diesel engines.
High Cetane no. (avg. over 50)
High Lubricity, even in blends as low at 1-2%
High Energy Balance (3.2 to 1)
Low Agriculture Inputs: Soybeans
78% Life Cycle CO2 Reduction
Reduces HC, PM, CO in existing diesel engines
Reduces NOx in boilers and home heating
Bio diesel is environmental friendly.
It can help reduce dependency on foreign oil.
It helps to lubricate the engine itself, decreasing engine
It offers similar power to diesel fuel.
It is safer than conventional diesel.
It can be made from waste products.
It can be made at home easily.
Its storage for long period is not suitable for engine
It becomes gel in cold weather.
It has water content. (Hygroscopic)
It degrades rubber.
It has higher (10%) Nox emissions.
It decreases horsepower. (25%)
Effect of biodiesel on engine performance
Power performance:Contents of Biodiesel
(Due to lower heating value)
Properties of Biodiesel
• Heating Value
(It is reactive in nature)
Economy Performance:• In order to compensate loss of heating value more amount of
biodiesel fuel consumption takes place.
• The difference in fuel consumption of diesel & pure BD was 18.5%
in mass & was reduced to 13.5% by volume because of higher
density of BD.
Biodiesel is least-cost-strategy to comply with state and
Use of biodiesel does not require major engine
modifications. The only thing that changes is air quality.
Biodiesel has positive attributes such as increased
cetane, high fuel lubricity & high oxygen content.
Biodiesel contains fewer aromatic hydrocarbon:
benzofluoranthene: 56 % reduction; Benzopyrenes: 71 %
Biodiesel reduces emissions of carbon monoxide (CO) by
approximately 50 % and carbon dioxide by 78 % on a net
Biodiesel is biodegradable and non-toxic posing no threat to
Biodiesel reduces by as much as 65 % the emission of small
particles of solid combustion products.
Biodiesel has higher cetane rating than petro diesel .
The use of biodiesel in a conventional diesel engine results in
substantial reduction of unburned hydrocarbons, carbon
monoxide, and particulate matter compared to emissions
from diesel fuel.
The ozone (smog) forming potentials of hydrocarbons is less
than diesel fuel.
Sulfur emissions are essentially eliminated with pure
Parameter will studied :• Different vegetable oils used as fuel in C.I.Engine.
Required equipment's:• Engine test ring
• Gas analyzer
• Temp indicator
• Techo meter
• Pressure sensors
To calculate:• Brake Thermal Efficiency
• Brake specific fuel consumption
• Thermal efficiency
• Mechanical efficiency
Graboski MS,McCormick RL. Combustion of fat and vegetable oil
derived fuels in diesel engines.
Lapuerta M, Armas O, Rodriguez-Fernandez J. Effect of biodiesel
fuels on diesel engine emissions.
Basha SA, Raja Gopal K, Jebaraj S. A review on biodiesel
production, combustion, emissions and performance.
Aydin H, Bayindir H. Performance and emission analysis of
cottonseed oil methyl ester in a diesel engine.
Hazar H. Effects of biodiesel on a low heat loss diesel engine.
Andree, A. & Pachernegg, S.J. (1969) Ignition conditions in diesel
engines. Society of Automotive Engineering Transaction
Babu, A.K. & Devaradjane, G. (2003) Vegetable oils and their
derivatives as fuels for CI engine