Presentation on I.C ENGINE PREPARED BY: GADHAVI POOJA( EN. NO: 131150106013) PATEL MANSI (EN. NO: 131150106048) SOLANKI KRISHMA( EN. NO: 131150106067)

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Presentation transcript:

Presentation on I.C ENGINE PREPARED BY: GADHAVI POOJA( EN. NO: ) PATEL MANSI (EN. NO: ) SOLANKI KRISHMA( EN. NO: ) TRIVEDI HIRAL (EN. NO: ) SUB: E.M.E DEPARTMENT: CIVIL SWAMINARAYAN COLLEGE OF ENGG. & TECH.,SAIJ

 The brief history of internal combustion engines.  What is an internal combustion engine?  Why do we need them in today’s world?  What do we use them for?  How do they work?  A brief discussion on diesel engines.

 Many designs have been made over the last 4 centuries but only a few men were recognized as inventors.  The first person to invent a working internal combustion engine automobile was Francois Isaac de Rivaz of Switzerland in Mixing hydrogen and oxygen for fuel.  The first gasoline powered engine was built in 1864 by a man named Siegfried Marcus and was said to be the forerunner to the modern automobile. It reached speeds up to ten mph.  In 1876 two of the greatest engines were invented. The two and four stroke engine by Nikolaus August Otto and Sir Dougald clerk. Starting the rise of even better and more efficient machine.

 Spark plug  Piston  Piston rings  Intake valve  Crankshaft  Cylinder  Piston rod  Exhaust valve

 The internal combustion of an engine is considered to be the heart of the automobile.  They are defined as any engine that uses an explosive combustion of fuel and air to push a piston within a cylinder. Forming the repeating cycle known as the strokes.  Intake, Compression, Power Stroke, and Exhaust are the four actions of one stroke.  The difference between the two cycle and four cycle engine is the number of strokes it uses to start the fuel reaction of internal combustion.  Diesel engines unlike gasoline do not need spark plugs to ignite the fuel. Instead it uses compression but undergoes the same principle of a stroke.

 This starts at the highest point known as top dead center and ends at bottom dead center  The intake stroke allows the piston to suck fuel and air into the combustion chamber through the intake valve port.

 Compression starts at bottom dead center and ends at top dead center.  The second motion of the stroke takes all the fuel and air that was stored and compresses it into one tenth its original sizes. Making the air/fuel mixture increase in temperature preparing it for the next stage in its combustion cycle.

 The power stroke starts as soon as the piston reaches top dead center allowing the spark plug to ignite.  This electric current created by the spark plug ignites the fuel and air mixture sending the piston back down the cylinder with a pressure reaching high as 600 PSI.

 The final stage of the stroke releases all the burned fuel through the exhaust valve.  As the piston moves from bottom dead center to top dead center it takes all the burned fuel and pushes it out of the cylinder, preparing it for the next cycle of strokes.

Drawing

Diesel engines work on the same principle as the two and four stroke engines. They do not need a spark plug to ignite the fuel. During the intake stroke, air does not mixed with the fuel in the cylinder. Instead as the air reaches high enough compression Fuel is then sprayed into the cylinder creating ignition. This pushes the piston down the cylinder at a pressure of 500 PSI, starting the stroke all over again.

 Internal combustion engines have ultimately revolutionized the way we live.  With the small and light weight design of the two cycle engine tasks like trimming the hedges and cutting down weeds became easier and more efficient. With the power of the four stroke we are now able to dig up dirt and cut down trees with out even breaking a sweat. Internal combustion engines have made life easier since the first one was built in the early 1800’s.