1. #1

    Tell me what is IC Engine?

    Science related query.
    Tell me what is IC Engine?

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  3. #2
    Rahul kuntala
    Join Date
    Aug 2011

    Re: Tell me what is IC Engine?

    Quote Originally Posted by Unregistered View Post
    Science related query.
    Tell me what is IC Engine?

    IC is also known as ICE(IC Engine)..! I think you are a science background student, and I hope you won't be disappointed with my answer..! Please have a look.

    IC Stands for "Internal Combustion"
    What is an IC ?

    An engine in which fuel is burned within the engine proper rather than in an external furnace...! OR
    IC is an engine in which the combustion of a fuel (normally a fossil fuel) occurs with an oxidizer (usually air) in a combustion chamber..!

    Charecteristics of an IC engine:
    (1) The compression of air
    (2) Raising of air temperature by the combustion of fuel in this air at its elevated pressure
    (3) Extraction of work from the heated air by expansion to the initial pressure
    (4) Exhausting

    Uses of the IC ?
    IC engines are most commonly used for mobile propulsion in vehicles and portable machinery.
    IC Engines are widely used in:
    Boats and aircrafts..!

    Advantages of IC engine:
    • It has no valves or camshaft mechanism, hence simplifying its mechanism and construction
    • For one complete revolution of the crankshaft, the engine executes one cycle—the 4-stroke executes one cycle per two crankshafts revolutions.
    • Less weight and easier to manufacture.
    • High power-to-weight ratio

    Disadvantages of IC Engine:
    • The lack of lubrication system that protects the engine parts from wear. Accordingly, the 2-stroke engines have a shorter life.
    • 2-stroke engines do not consume fuel efficiently.
    • 2-stroke engines produce lots of pollution.

    The following four operations are performed on IC Engines:

    1. Intake stroke: The first stroke of the internal combustion engine is also known as the suction stroke because the piston moves to the maximum volume position (downward direction in the cylinder). The inlet valve opens as a result of piston movement, and the vaporized fuel mixture enters the combustion chamber. The inlet valve closes at the end of this stroke.

    2. Compression stroke: In this stroke, both valves are closed and the piston starts its movement to the minimum volume position (upward direction in the cylinder) and compresses the fuel mixture. During the compression process, pressure, temperature and the density of the fuel mixture increases.

    3. Power stroke: When the piston reaches the minimum volume position, the spark plug ignites the fuel mixture and burns. The fuel produces power that is transmitted to the crank shaft mechanism.

    4. Exhaust stroke: In the end of the power stroke, the exhaust valve opens. During this stroke, the piston starts its movement in the minimum volume position. The open exhaust valve allows the exhaust gases to escape the cylinder. At the end of this stroke, the exhaust valve closes, the inlet valve opens, and the sequence repeats in the next cycle. Four stroke engines require two revolutions.

    I hope you got some idea about the IC's now...!! If you have any further doubts in your mind, then visit EC again...!

    Education Career.in Member..!

  4. #3

    Re: Tell me what is IC Engine?

    how the petrol works in the engine?

  5. #4
    Just Guesss?
    Join Date
    Jul 2011
    A.S.Rao Nagar - Hyderabad

    Re: Tell me what is IC Engine?

    Hello friend !!

    IC Engine stands for Internal combustion Engine.

    The internal combustion engine is an engine in which the combustion of a fuel (normally a fossil fuel) occurs with an oxidizer (usually air) in a combustion chamber.

    The first internal combustion engine was created by Étienne Lenoir.

    In an internal combustion engine, the expansion of the high-temperature and high -pressure gases produced by combustion apply direct force to some component of the engine.

    This force is applied typically to pistons, turbine blades, or a nozzle.
    This force moves the component over a distance, transforming chemical energy into useful mechanical energy.

    IC - Engine configurations :

    Reciprocating :

    Two-stroke engine
    Four-stroke engine
    Six-stroke engine
    Diesel engine
    Atkinson cycle
    Miller cycle

    Rotary :

    Wankel engine
    Continuous combustion:
    Gas turbine
    Jet engine (including turbojet, turbofan, ramjet, Rocket, etc.)

    How to Start an IC-Engine ??

    An internal combustion engine is not usually self-starting so an auxiliary machine is required to start it.

    Many different systems have been used in the past but modern engines are usually started by an electric motor in the small and medium sizes or by compressed air in the large sizes.

    Working of an IC - Engine :

    Good Luck and hope you have got an detailed idea of IC-Engine !!

  6. #5
    Join Date
    Jan 2012

    Re: Tell me what is IC Engine?

    Quote Originally Posted by Unregistered View Post
    Science related query.
    Tell me what is IC Engine?
    An internal combustion engine is any engine that operates by burning its fuel inside the engine. In contrast a steam engine burns its fuel outside the engine. The most common internal combustion engine type is gasoline powered. Others include those fueled by diesel, hydrogen, methane, propane, etc. Engines typically can only run on one type of fuel and require adaptations to adjust the air/fuel ratio or mix to use other fuels.

    The two-stroke type of internal combustion engine is typically used in utility or recreational applications which require relatively small, inexpensive, and mechanically simple motors (chainsaws, jetskis, small motorcycles, etc).

    The four-stroke internal combustion engine is the type most commonly used for automotive and industrial purposes today (cars and trucks, generators, etc).

    Principles of operation

    • Two-stroke cycle
    • Four-stroke engine
    • Sleeve valve four-stroke
    • Crude oil engine
    • Proposed
    • Bourke engine
    • Rotary:
    • Demonstrated:
    • Wankel engine
    • Proposed:
    • Orbital engine
    • Quasiturbine
    • Continuous combustion:
    • Gas turbine
    • Jet engine
    • Rocket engine

    video showing working of IC Engine:

    good luck !!!

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