PowerPoint Presentation How an engine works by nikeborome


									Matthew Greve
Basic parts of a engine
             The core of the engine is the cylinders,
                it is made up of the head and block of
                you engine.
               Piston: A piston is a cylindrical piece of metal that
                moves up and down inside the cylinder.
               Spark plug: supplies the spark that ignites the air/fuel
                mixture so that combustion can occur. The spark must
                happen at just the right moment for things to work
               Valves: The intake and exhaust valves open at the
                proper time to let in air and fuel and to let out exhaust.
                Note that both valves are closed during compression
                and combustion so that the combustion chamber is
               Crankshaft:
The crankshaft turns the piston's up and
                down motion into circular motion just like a crank on
                a jack-in-the-box does.
               Oil pan: The oil pan I just used to hold oil, also know
                as the slump.
               Fuel Injectors: Fuel injectors push fuel into the
                engine, in newer cars , older cars have carburetors.
Inside an engine
            Parts of an engine
What makes a car move?
   The car battery powers up sending
   Power to the starter motor, which
   Turns the crankshaft, which
   Starts the pistons moving
   With the pistons moving the engine fires up and ticks over
   A fan draws air into the engine via an air filter
   The air filter removes dirt and grit from the air
   The cleaned air is drawn into a chamber where fuel (petrol or diesel) is added
   This fuel-air mix (a vaporized gas) is stored in the chamber
   The driver presses the accelerator pedal
   The throttle valve is opened
   The gas-air mix passes through an intake manifold and is distributed, through intake valves, into the cylinders. The
    opening and closing of the valves is controlled by the camshaft.
   The distributor makes the spark plugs spark, which ignites the fuel-air mix. The resulting explosion forces the a piston
    to move down which in turn causes the crankshaft to rotate.shaft to rotate.
Internal combustion
             The -principle behind any reciprocating internal
              combustion engine: If you put a tiny amount of high-
              energy fuel (like gasoline) in a small, enclosed space
              and ignite it, an incredible amount of energy is
              released in the form of expanding gas. If you can create
              a cycle that allows you to set off explosions like this
              hundreds of times per minute, and if you can harness
              that energy in a useful way, what you have is the core
              of a car engine!
               The piston starts at the top, the intake valve
              opens, and the piston moves down to let the
              engine take in a cylinder-full of air and
              gasoline. This is the intake stroke. Only the
              tiniest drop of gasoline needs to be mixed into
              the air for this to work. Then the piston moves
              back up to compress this fuel/air mixture.
              Compression makes the explosion more
              powerful.When the piston reaches the top of
              its stroke, the spark plug emits a spark to ignite
              the gasoline. The gasoline charge in the
              cylinder explodes, driving the piston
              down.Once the piston hits the bottom of its
              stroke, the exhaust valve opens and the exhaust
              leaves the cylinder to go out the tailpipe.

 http://www.howstuffworks.com/engine2.htm
 http://www.howstuffworks.com/engine.htm
 http://www.familycar.com/Engine.htm
 http://www.google.com/imgres?imgurl=http://www.2carpros.com/how_does_it_work/i
 http://auto.howstuffworks.com/engine1.htm
 http://www.seriouswheels.com/pics-1960-1969/1969-Chevrolet-Camaro-Convertible-

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