This website uses cookies to ensure you have the best experience. Learn more

Experimentation And Flow Analysis On An Open Combustion Chamber Geometries To Improve The Combustion Of A Biodiesel Fuelled Diesel Engine

1540 words - 7 pages

In this present work a study about the effect of varying the combustion chamber geometry i.e. providing the curved tangential groove on the piston crown in the cylinder was investigated for the air swirl, squish, tumble in the combuston chamber by using CFD software, this improving the performance, emission and combustion characteristics of a single cylinder direct injection diesel engine by using biodiesel. In order to achieve the different swirl intensities in the cylinder, three design parameters have to changed: the cylinder head, piston crown, and inlet duct. In this way, the piston crown is modified i.e.alteration of combustion chamber to enhance the turbulence in the cylinder. In this ...view middle of the document...

Pongamia Pinnata locally known as Karanja is chosen for this study. The seeds are largely exploited for extraction of a non-edible oil, commercially known as ‘KARANJAOIL’ well recognized for its medicinal properties and also used in the manufacture of soap. Leaves are used as fodder and green manure. The wood of this tree is used as fuel throughout the country and also used for construction, tool handles and agricultural implements.
2. Experimental setup and methods
Pongamia Pinnata locally known as Karanja is chosen for this study. The properties of this oil which is compared with diesel is given below in table 2.1

2.1 Properties of Biodiesel Fuels
Property Pongamia Biodiesel ASTM standards Diesel
Calorific value MJ/Kg 37-40 - 44.03
Density Kg/m3 0.87 - 0.830
Flash point ̊ C 186 130̊ C min 35̊ C (min)
Sulphur content % 0.0015 0.05 0.25 (max)
Viscosity 5.867 1.9-6.0 cst 2-5 cst
Cetane number 50-52 - 45-50

The experimental set up for measuring performance, emission and combustion
Parametersis described below. The schematic representation of the experimental set up is shown in fig. It consists of a single cylinder diesel engine, eddy current dynamometer, crypton 5 gas analyzer and fuel measuring tube.

The engine used in test rig is a Kirloskar Model SV1, single cylinder, four stroke, Water cooled, direct injection type, diesel engine. To reduce the temperature of the cylinders and the lubricant, the cooling system of the engine is connected to a cooling water tower by means of a cooling-water pipe line. The specifications of engine used for this study are given below in table 2.2

Table 2.2 Engine Specification
TYPE Single cylinder 4s C.I.engine (Kirloskar)
Bore 87.5mm
Stroke 110mm
Displacement 661CC
Compression ratio 17.5:1
Brake Power 5.2KW
Speed 1500 RPM
Injection timing 23̊ b TDC
Dynamometer Eddy current Dynamometer
Cooling system Water cooled

2.2 Measurement Range of Crypton Exhaust Gas Analyzer

This analyzer is used to find out emission in exhaust gases coming from the engine such as hydro carbon (HC), carbon monoxide (CO), carbon di oxide (CO2) , and oxygen (O2).

• CO : 0 – 10% vol.
• HC : 0 – 10000 ppm
• CO2 : 0 – 20% vol.
• NOX : 0 – 5000 ppm
• O2 : 0 to 25%

AVL Smoke meter is used to measure the smoke from the engine which was connected through the exhaust pipe of the engine. It measures the exhaust smoke level by using the method of spot filtering principle. The smoke value measured by this instrument ranges from 0 to 100.It is either denoted as Hatridge smoke number.

2.4 Valve timing
Inlet valve Opens bTDC - 4.5 deg
Inlet valve closes aBDC - 35.5 deg
Exhaust valve opens bBDC - 35.5 deg
Exhaust valve closes aTDC - 4.5 deg

The modified pistons are used for this...


The Evolution Of The Internal Combustion Engine

1620 words - 6 pages ? Internal combustion is the process of internally burning gasoline to produce forward motion. There are two different types of internal combustion engines. The diesel engine is one and the gas turbine engine is the other. The gas turbine engine is the most commonly used engine in the automobile industry. The principle behind internal combustion is simple. If you put a small amount of fuel, such as gasoline, in a small enclosed space and ignite it, an

Oil and The Internal Combustion Engine

1470 words - 6 pages Oil and The Internal Combustion Engine Our cars are powered by an obscure fuel source. The answer to this lies many decades or, more accurately, perhaps centuries ago. The inventors and pioneers such as Rudolf Diesel, Felix Wankel and Nikolaus Otto, would have never considered the fuel that they did if they knew the kind of political ramifications that it would have had on the world today. I propose, that due to this fuel source, the

Efficiency of Internal Combustion Engine

1285 words - 5 pages people hear turbo, they think that car moves fast. It is true. Car which has turbo moves fast, because the turbo or turbocharger is a system that increases the efficiency of car. The technic mean of a turbocharger, or turbo (colloquialism), from the Greek "τύρβη" ("turbulence") is a turbine driven forced induction device that makes an engine more efficient and produce more power for its size by forcing extra air into the combustion chamber. (Wikipedia

The Combustion of Polymers

1756 words - 8 pages properties of hydrocarbons have caused millions of dollars in property damage and claimed an untold number of human lives. It is this fact that has lead to scientists devoting time and resources to making polymers safer. In the following paragraphs the mechanism behind burning polymers will be discussed, as well as the techniques employed to either slow the rate of fire and/or extinguish it altogether. A section will also be devoted to a review

The Physics of a Diesel Engine

927 words - 4 pages mechanical work. Applying physics to something in everyday use creates a new appreciation for what actually happens when you step on the accelerator pedal or see a truck pulling 40,000 plus pounds up a steep incline. With even a basic study of physics my worldview has changed. I now look at that cold piece of cast iron sitting in an engine compartment on a molecular level. Works Cited Dagel, John F., and Robert N. Brady. Diesel Engine

The Future of Internal Combustion

1147 words - 5 pages transportation could not be possible, The Internal Combustion Engine. You might be wondering what is exactly is an Internal Combustion Engine? It’s actually a simple concept but the way it’s performed can becoming very complex. The function of is to create a pulling force through a controlled explosion of compressed air and fuel inside a combustion chamber which then pulls a crank. Depending on what type of platform the engine is on will determine what

An Investigation into the Enthalpies of the Combustion of Alcohols

5145 words - 21 pages . From my graph I can now give an estimation of the Energy per Mole of Butanol by marking a point at 4 carbon atoms as that is how many carbon atoms are in Butanol and then where the y point meets this x point on the best fit line, I have my value. My predicted value of Butanol is the value of 2304(KJ/Mol), where as using my experimental results I would find the value to be about 1258(KJ/Mol). Using this graph I can work out the gradient of

To detemine the heat of combustion of ethanol and methanol. Procedures and conclusion

1358 words - 5 pages to be excreted through the kidneys. Remaining formaldehyde will be converted to formic acid and excreted.Therefore through experimental results and detailed risk assessment ethanol would be a better choice to take on an overnight camping trip. Empty containers retain product residue, (liquid and/or vapor), and can be dangerous. Ethanol should be stored in a tightly closed child proof container. Do not pressurize, cut, weld, braze, solder, drill, grind, or expose empty containers to heat, sparks or open flames. Keep away from sources of ignition and store in a cool, dry, well-ventilated area.

Is Biodiesel a Viable Alternative To Diesel From Fossil Fuels For Trucks And Buses?

1029 words - 4 pages reaction, the glycerol and ester form two liquid layers and catalyst is removed for reuse.(Vegetable oil) + (Alcohol) → (Glycerol) +(Methyl Ester)On the other hand, diesel is made from the petroleum which takes millions of years to form under the earth. Thus, it is a kind of nonrenewable energy source. Same as diesel fuels, biodiesel can generate the engine through combustion process. The cloud point of biodiesel is 13°C whereas the cloud

Combustion Of Alcohols

2233 words - 9 pages Combustion Of AlcoholsPlanningThis investigation involves burning alcohol in the air. Key science- Chemistry by Eileen Ramsden says that " an alcohol is a series of organic, homologous compounds, with the general formula Cn H2n+1OH". The alcohol reacts with the oxygen in the air to form the products water and carbon dioxide:Cn H2n+1OH +(n+n/2)-1O2 ? nH2O + nCO2The structure of the molecules in this reaction is:H H | | H - C - C - O- H + 3[O=O

DNT - Rudolph Diesel - Inventor of the diesel engine

894 words - 4 pages Rudolph Diesel was a German engineer who in 1892 created the diesel engine, a type of internal combustion engine. He was born on the 18th of March, 1858 in Paris. Rudolph was born into a poor family and was surrounded by poverty almost all of his life, making for a very unhappy childhood.Diesel started his education in Paris where he was an excellent student. He enjoyed art and spent a lot of his time in the museum of arts and crafts. The

Similar Essays

The Diesel Hybrid Combustion Engine Essay

1321 words - 5 pages The Diesel Hybrid Combustion Engine Two main types of engines powering everyday machinery are diesel and gasoline internal combustion engines. Both vary on efficiency levels, but are still effective. Diesel engines have high efficiency levels, such as producing great amount of torque at very low rpms. They are also known for their fuel-efficient behavior and capability to produce low emissions. Their capability

The Process Of An Internal Combustion Engine

947 words - 4 pages improvement of the 4-stroke motor that is used today in just about every automobile on the road. Many people drive cars but fail to realize how they work, and don't try to learn about engines because they think it is complex, and not an easy concept to grasp. Air, fuel, spark, and combustion are the premise of an internal combustion engine. A simplistic view on an internal combustion engine is outlined below. The first step in an internal combustion

The Internal Combustion Engine Essay

852 words - 3 pages The internal combustion engine has become an integral part of the lives of every person on earth. They’re the devices that have allowed us to cross continents reliably, generate electricity in remote areas and fly around the world in a matter of hours. All these engines do is burn fuel and convert its energy into work. It’s these heat engines that have really changed the world. However the convenience they bring has come at a great cost. The

Components, Wear, And Rebuild Of An Internal Combustion Engine

2717 words - 11 pages spins, it passes eight contacts. When it passes the contact, an electrical pulse is sent from the ignition coil and the electricity arcs to the contact. Each contact transfers the electricity through the plug wires to the spark plugs (Nice). Now, with an understanding of the components of a motor and their functions, engine disassembly can begin for rebuilding. The motor should be on a motor stand for the rebuild process. This elevates it and allows