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Diesel engines are inherently noisy due to the method in which they burn fuel. Unlike spark ignition engines, compression ignition engines run much higher compression ratios, about 18:1 as opposed to gasoline engines which typically run a 10:1 ratio.
This means that a diesel compresses a larger volume of gas into the same space as an gasoline engine of the same size, this compression heats up the air to such a high temperature that when the diesel fuel is injected into the cylinder it spontaneously explodes, releasing a lot more energy than the equivalent gasoline engine. the large amount of rapidly expanding gas is what causes the loud operating noise.
Modern diesel engines can get around this by incorporating a small premixing chamber before the cylinder connected by a small passage. This slows down the explosion and makes the engine quieter and smoother.
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Why diesel driven vehicles are noicy?
Extremely high compression ratio is the reason they are so noisy, but newer diesels do not sound significantly louder than gasoline engines.
How is a submarine powered?
Modern submarines are powered by a nuclear reactor. Others are powered by diesel engines while they are on the surface and batteries while they are submerged. The older ones that were powered by diesel and batteries had their limitations. While they were on the surface running on diesel engines they left a trail of exhaust smoke which gave away their position. When they were submerged and running on batteries they could only last so long and then they had to come to the surface, run the diesel engines and recharge the batteries. The submarines that are run by nuclear power do not have to resurface for a very, very long time.
Why bikes can not be made using diesel engines?
yes definitely it can be made using diesel engines, but it will be so heavy that it cannot be handled by an individual
Why is a diesel engine running rough when its cold?
Diesel engines, unlike gas engines do not have any spark plugs. The reason that they do not need a spark plug is because in diesel engines, the air is compressed much, much more than in a gas engine. The more that you compress the air, the more that the air is heated. Diesel engines have so much compression that the air inside of your cylinder becomes super heated and there is no need for a spark plug. The air is so hot that when the diesel fuel is injected into the cylinder, the diesel fuel ignites and the piston is pushed down via the "explosion" that takes place when the piston reaches tdc(top dead center). Because of this, diesel engines need to warm up. This is why diesel engines have glow plugs. The glow plugs warm the block and help the engine to heat up faster.
Are diesel engines more polluted than steam engines?
Of an individual diesel engine and an individual steam engine of the same energy output the diesel engine would be less polluting. It is far more efficient. However, there are far more diesel engines than steam engines in the world today so overall diesel engines pollute more than steam engines.
Why do diesel engines require more maintenance?
They dont, diesel engines are generally more reliable than gas engines, and alot simpler due to the fact that the entire ignition system found in gas-powered engines is deleted entirely from the diesel equation. (Diesel engines don't have spark plugs, they rely on compression to ignite the fuel, meaning: they sqeeze the diesel fuel so much that it explodes)
What will happen if SI engines is used in place of CI engines in trucks?
we can use si engines in place of ci engine in trucks.. Bt as u know in trucks heavy power is required to carry such high loads.. Nd also the cost of petrol is higher than diesel so to obtain high mechanical power nd less running cost diesel engines are used..!
What causes slow deceleration on a diesel engine?
Diesel engines do not engine brake like gasoline engines do, so relatively speaking, the rate of deceleration would seem to be slower.
Differences between petrol and diesel engines?
sic difference between Petrol and Diesel engines that the difference of fuel and their mixture..in diesel we only compresses the Air and sprays Diesel but in Petrol Engines we compresses both the air and Petrol together and gets burnt with the the help of spark given by the Spark plug. I must add this, also the thermodynamic cycle is so different in diesel engines rather than petroleum engines. You can fined more in Reed's series volume 12
What causes Noisy tappets on 2006 Honda diesel crv?
Diesels are normally noisy anyway - are you sure it your valve tappets? If so, they could be out of adjustment. Take it to a shop and have them checked and adjusted.
What problems did the diesel engine have?
1. Diesel engines, because they have much higher compression ratios (20:1 for a typical diesel vs. 8:1 for a typical gasoline engine), must have thicker metal castings so tend to be heavier than an equivalent gasoline engine.2. Diesel engines also tend to be more expensive to buy. However, because diesels can do more miles per gallon, they are well worth the extra money because, but, if you do a big annual mileage, they will save you money buying diesel fuel instead of gasoline.3. Diesel engines, because of their weight and compression ratio, tend to have lower maximum RPM ranges than gasoline engines. This makes diesel engines high torque rather than high horsepower, and that tends to make diesel cars slower in terms of acceleration. The latest designs of diesel engine have performances which are almost as good as as gasoline engines.4. Diesel engines must be fuel injected, and in the past fuel injection was expensive and less reliable. Nowadays many gasoline engines also use fuel injection systems and the designs of both the injector fuel pumps - and the injectors themselves - have been improved to make them very reliable.5. Diesel engines tend to produce more smoke and "smell funny." Nowadays, provided they are serviced correctly, diesel engines don't emit more smoke.6. Diesel engines are harder to start in cold weather, and if they contain glow plugs, diesel engines can require you to wait before starting the engine so the glow plugs can heat up. Modern diesel engines don't have that problem.7. Diesel engines used to be much noisier and tended to vibrate. Modern diesel engines can be almost as quiet as gasoline engines and they don't vibrate so much.8. In some places diesel fuel is less readily available than gasoline.
Can you use a diesel battery in place of a petrol battery?
Batteries are basically the same for petrol or deisel engines, but diesel engines require more cranking force and demand a bigger battery. So a battery from a diesel engine is ok for petrol, providing it fits.
