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The diesel fuel, along with fresh air, is put under a great deal of pressure over the piston under the cylinder head. This causes the mixture of fuiel and air to explode and push the piston down. Other then that the operation between a diesel and petrol engine are about the same.
Another answer
A diesel engine works like a regular gas or petrol engine that uses injectors, except that a diesel engine uses only very high compression to cause the diesel fuel/air mixture to heat up so much that it explodes. Some diesels also have glow plugs which help the diesel fuel/air mixture ignite while the engine is cold.
A gasoline engine does not use such very high compression to ignite the fuel/air mixture. It uses a spark plug.
A diesel engine is very similar to a gasoline engine except for one main reason. A 4-stroke gasoline engine first intakes a mixture of air and fuel into the cylinder, compressed by a piston, and then this compressed mixture is ignited by a spark plug which creates a small electrical arch. A diesel engine first intakes just air into the cylinder and is compressed, afterwards the fuel is injected into the compressed air, the heat from the compression of the air ignites the mixture without the use of a spark plug.
Eudora Brekke
Wiki User
∙ 8y agoI will explain on a 1 cylinder engine. This makes it easier to under stand. Inside the cylinder is a piston that moves up and down tight to the side walls of the cylinder. Connected to the bottom of the piston is a rod. The rod connects to a shaft called a crankshaft at the bottom of the engine. The crankshaft is connected to the transmission. When the piston is moved downward it turns the crankshaft, also fuel is either pulled in through a carbuerator (cars pre-1986) or pumped in through electronic fuel injection system (callel EFI) above the piston. The crankshaft is still turning and momentum pushes the piston back up. The fuel and air above the piston are compressed (at least 120psi for gasoline, 500psi for diesel I will explain later.) In a gasoline engine the compressed mixture is ignited by a spark plug located at the top of the cylinder, forcing the piston down and continuing the cycle. In a diesel engine the diesel/air mix is compressed more to create heat. The heat becomes so intense that it ignites and forces the piston downward.
Well gasoline engines has an air / fuel mix. Yes diesels run compression ration as high as 25:1 and that's the key and what makes the Diesel engine run. When the big heavy piston travels down in the cylinder it sucks in an extremely high volume of air. The valves shut the piston then travels up compressing ONLY AIR what happens when air is compressed?? It gets so hot that all that's needed is a little sprints of diesel fuel to be sprayed from the injector on onto the hot compressed air to ignite causing the powerstroke! There is no mixing of air and diesel fuel on the compression stroke. Only air is being compressed. Just to correct and clarify the answer.
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Four stroke diesel engine work principle?
how diesel engine works. on which principle diesel engine works. who search the diesel engine. capacity of diesel engine. how we calculate the efficiency of diesel engine. firing order of diesel engine. any videos
Will diesel engine work better with a spark plug?
Actually , there are no spark plugs in a diesel engine
Can petrol work in a diesel engine?
Yes, petrol will work in a diesel engine but will run rough for a short time before the engine needs extensive and expensive repairs.
Can a diesel crankshaft and pistons work in a gas engine?
No.
Can you use octane booster in diesel engine?
no diesel has butane instead of octane so it will not work
Will gasoline work in a diesel engine?
No, Gasoline or Petrol as it is also known will not fuel a diesel engine, in fact it may suffer permenant damage if you try.
How long will diesel car run on petrol?
It won't, even a mixture of gasoline and diesel will not work. May I add that running petrol in a diesel will destroy that diesel engine.
When did Rudoulph Diesel invent the diesel engine?
the diesel engine was invented in 1892 by Rudolf Diesel. the diesel engine was invented in 1892 by Rudolf Diesel.
Why does diesel not work in petrol engine?
Click the link for a good scientific answer.
Different green diesel and diesel engine?
green engine is 6stroke engine and diesel engine is 4 stroke
Who created the diesel engine?
Rudolf Diesel created the Diesel engine in 1897 and got a patent for his engine in 1898
How do diesel powered engines work?
Diesel engines work by using compression to cause an explosion which releases a surge of power. The engine compresses diesel fuel and oxygen in a cylinder until the fuel heats up and explodes.
