how does an engine work?

Answer 1

a gas engine basically works by having a chamber cylinder bit in it . then a piston that fits just right in the chamber. it will have rings replaceable rings around the piston as they wear out and they help form a tight seal. oil is either put in the chamber directly from a pump or it is mixed with the gas.
the gasoline is pumped into the piston chamber and a spark from a spark plug is trigger to go off at just the right moment as the piston goes up and down . the spark plug gets the spark when the piston is near the top and the gasoline and all the air are compressed to the maximum . this causes a big explosion in the chamber and pushed the piston down very fast. now at the top of the chamber are one or more valves that are also connected to this hole machine the valves also fit very tightly . they open to let air and gas in and close as the piston comes up then the spark bang the valve opens again and the burnt fuel goes out pretty much out the tail pipe to keep it simple
this is how power is made in the engine but now you need to connect that power to something so it is of use .
this is down by having a a cam shaft that is a rod that most often runs horizontal along the top off the engine when you put oil in a car that is what you are seeing in that hole.
anyway that shaft is made to turn again in a well timed fashion with the movement of the piston. this shaft is connected to other parts and gears that end up getting to the axle and make that turn so the wheel or wheels have power and go around . this is an ultra basic discription of an internal combustion engine . a disel engine work in a similar way but has no spark plugs and the fuel catches on fire because of heat and compression. they go hand in hand.
other then that the engines are pretty much the same.

Answer 2

All engines work by heating up air and taking advantage of the expanse in volume or velocity as it heats up. If you mean automobile engines -- also known as Otto cycle engines -- air is heated to drive a piston to turn a crank to turn the wheels.

An air/gasoline mixture enters the cylinder on a downward stroke of the piston, the intake stroke. Then the mixture is compressed as much as possible on an upward stroke of the piston, the compression stroke. The spark plug ignites the mixture, it expands, and the piston is forced to the bottom. Then the exhaust gas is pushed out with an upstroke of the piston. There are four phases; hence the engine is called a four-cycle engine.

Two cycle engines in outdoor power equipment and cheap off-road motorcycles are similar but the cylinder design combines the phases so combustion happens on every upstroke instead of every other upstroke. The disadvantage of this is that you have to add engine oil with the gasoline and air in your mixture, increasing harmful emissions. It would be impractical if not impossible to make a two-cycle engine that meets today’s requirements for emissions on passenger cars.

Diesel engines are similar to gasoline engines except there are no spark plugs. The fuel ignites on its own when it's compressed.

Answer 3

howitworks.com, search combustion engine

basically, most engines get there power from controlled explosions. It's pretty cool actually... But the diagrams a website like howitworks.com has would be better for explanation.

Check out the difference between a 2-cycle and a 4-cycle engine.

Answer 4

Basic answer: Gas and air are injected or pumped into a space provided by a piston moving up and down in a cylinder. When the space is compressed, it is ignited by a spark and causes an explosion which moves the piston in the opposite direction. The pistons are connected to a shaft which is turned and provides rotation.

Answer 5

Would you agree that a pictorial explanation is worth 1000 words of bla bla blah?
Go to www.Howstuffworks.com, and search for 'Combustion Engines'.
You will find a simple explanation, along with an animated colour picture of a piston moving inside a combustion chamber, etc.
Excellent explanation!

Answer 6

the easiest way to remeber is suck squeeze bang blow- ssbb

suck air/fuel
squeeze the mix
spark plugs ignite and push pistons down-bang
valves open and the piston moves up to blow everything out

Answer 7

Go directly to HOWSTUFFWORKS.COM
Nice site m,an u will find ur answers there easily...