Презентация на тему Internal combustion engine

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2. The principle behind any reciprocating internal combustion
3. Almost all cars currently use what is
4. The four-stroke approach is also known as
5. Intake stroke Compression stroke Combustion stroke Exhaust stroke The four strokes are:
6. 1. The piston starts at the top,
7. Then the piston moves back up to
8. When the piston reaches the top of
9. Once the piston hits the bottom of
10. Notice that the motion that comes out
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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

Martynov Sergey2-year studentGroup TO-224internal combustion engine

Almost all cars currently use what is called a four-stroke combustion cycle

The four-stroke approach is also known as the Otto cycle, in honor

Intake stroke Compression stroke Combustion stroke Exhaust stroke The four strokes are:

1. The piston starts at the top, the intake valve opens, and

Then the piston moves back up to compress this fuel / air

When the piston reaches the top of its stroke, the spark plug

Once the piston hits the bottom of its stroke, the exhaust valve

Notice that the motion that comes out of an internal combustion engine

Слайды презентации

Слайд 2 The principle behind any reciprocating internal combustion engine:

The principle behind any reciprocating internal combustion engine: if you put

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. You can use that energy to propel a potato 500 feet.

Слайд 3 Almost all cars currently use what is called

Almost all cars currently use what is called a four-stroke combustion

a four-stroke combustion cycle to convert gasoline into motion.

Слайд 4 The four-stroke approach is also known as the

The four-stroke approach is also known as the Otto cycle, in

Otto cycle, in honor of Nikolaus Otto, who invented

it in 1867

Слайд 5 Intake stroke
Compression stroke
Combustion stroke
Exhaust stroke

The four strokes are:

Слайд 6 1. The piston starts at the top, the

1. The piston starts at the top, the intake valve opens,

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.

1st stroke of the cycle

Слайд 7 Then the piston moves back up to compress

Then the piston moves back up to compress this fuel /

this fuel / air mixture. Compression makes the explosion

more powerful.

2nd stroke of the cycle

Слайд 8 When the piston reaches the top of its

When the piston reaches the top of its stroke, the spark

stroke, the spark plug emits a spark to ignite

the gasoline. The gasoline charge in the cylinder explodes, driving the piston down.

3rd stoke of the cycle

Слайд 9 Once the piston hits the bottom of its

Once the piston hits the bottom of its stroke, the exhaust

stroke, the exhaust valve opens and the exhaust leaves

the cylinder to go out the tailpipe.
Now the engine is ready for the next cycle, so it intakes another charge of air and gas.

4th stoke of the cycle

Слайд 10 Notice that the motion that comes out of

Notice that the motion that comes out of an internal combustion

an internal combustion engine is rotational, while the motion

produced by a potato cannon is linear (straight line). In an engine the linear motion of the pistons is converted into rotational motion by the crankshaft.