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Diesel engines work by compression. The cylinder chamber has a very high compression ratio and this ignites the vapor mix of diesel fuel and air when injected into the cylinders. Gasoline engines (which have lower compression ratio) need a spark plug to ignite the fuel/air vapor. Diesel engines can develop a lot of power at low RPM's and this is why they are very popular in construction equipment and trucks.
Unlike your typical everyday gas engine, diesels do not use spark plugs. Diesel fuel is thicker and less flamable than gasoline. However, when diesel does burn, it puts out more energy than an equivalent amount of gasoline, generating higher torque numbers. Due to not having spark plugs, diesels need to compress more air in order to get the fuel hot enough to burn. This causes quite a few problems in the winter time because there is little heat for a diesel to start on. This makes for a lot of hard starts.
Due to higher pressure within the cylinder walls, diesel engines are built more to be much sytronger and durable. This causes a longer life span than gas engines. It is not uncommon to see a diesel go 400,000 - 500,000 miles without a rebuild.
As for how a diesel engine actually runs:
Each engine consists of a certain number of cylinders. There is one piston for each cylinder. These pistons are all connected to the crankshaft which rotates to move the pistons up and down (the pistons are not always in the same position as each other). Each cylinder draws in a certain amount of air. It takes this air in via the intake valve which is located in the cylinder head right above the cylinder. In order to make more room for air, the piston moves to the lower position in the cylinder. Once it is at it's lowest level, the piston starts to move up to squeeze the air, making the air incredibly hot (by this time the intake valve is closed to prevent the air from escaping). Once the piston reaches the top, fuel is injected via the fuel injectors at a very high pressure. The fuel pressure combined with the high compression level causes what is known as combustion. This combustion produces a lot of energy/power, which in turn pushes the piston down. As the piston comes back around to the top, the exhaust valve opens up to release the exhaust gases made by the combustion. These exhaust gases then exit the exhaust manifold and leave through the tail pipe on the vehicle.
After this whole process is over, it starts over again with the air intake. The rate at which this process takes place is refered to as RPM's (revolutions per minute). And to finish up, each cylider has what is known as a firing order in this process. For example, if you have a six-cylinder engine, not all six cylinders will be at the same stage/cycle at once.
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can hydrogen kits work on deisel engines?
Yes, hydrogen kits work for diesel engines.
Why do you need to bleed a diesel?
Diesel engines work in a different way to petrol in that they work on pressure to ignite warm diesel as opposed to petrol engines which have spark plugs. in order to work, there can be no air, air wont ignite!!
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.
Why do you use Diesel Engines to pull heavier loads petrol engines for higher speeds?
Becouse a diesel engine has no spark plugs to foul under a heavy load, and a heavy load can work in the diesel engines' favor because it uses compression not combustion Becouse a diesel engine has no spark plugs to foul under a heavy load, and a heavy load can work in the diesel engines' favor because it uses compression not combustion
Are gasoline and Diesel engines heat engines?
Yes, gasoline and diesel engines are heat engines. The energy released by the burning fuel causes the gas in the cylinders to expand and push the pistons, which in turn do work.
What is the difference in how a normal car engine and a diesel car engine in how they work?
diesel engines compress the fuel mixture much more than gasoline engines, diesel engines are always fuel injected while gasoline engines have the option of being carbureted, diesel engines usually cost more, diesels produce more power than a comparable gasoline engine, diesel engines have no distributor or spark system, and instead use glow plugs to ignite fuel, and diesel engines can be converted to run on vegetable oil with few modifications.
What happen if you use spark plugs in diesel engines?
Nothing. That is, literally nothing. It doesn't work. Diesel engines don't use spark plugs, because they don't need them.
Does diesel engines run on diesel fuel or gasoline fuel?
Diesel engines run on diesel fuel. Gasoline will destroy a diesel engine.
When was Atlantis Diesel Engines created?
Atlantis Diesel Engines was created in 1979.
Does a double decker bus use petrol or diesel?
Well this all depends on what type of engines are supplied in these buses. Usually buses use diesel due to the high weight load that that are put on the engines. Diesel engines have better compression and can usually provide more torque to do work with all those people on board. Here is a good read on Diesel engines....(link)
Diesel engines on boats are a waste of money.?
Diesel engines on boats are a waste of money.
Why small vehicles do not use diesel engines?
Most small vehicles do not use diesel engines.
