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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.
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What is the steam engine's application today?
Most steam engines except those used on tourist railroads have been replaced with the more efficient steam turbine engines.
Why do you have different types of engines?
Because different engines have different advantages. Steam engines can be run from anything that burns, but are big and heavy. 2-stroke (gasoline) engines has great power-to-weight ratio, but tend to use a lot of fuel and create a lot of emissions. 4-stroke Diesel engines tend to run rougher and don't rev as high as gasoline engines but are more fuel efficient and often have more torque.
Why petrol engines are faster than diesel engines?
Petrol engines are widely considered to be the most efficient of engines, because they are more refined than diesel. Since diesel is not completely refined, it cannot completely combust and so does not (in theory) produce as much energy per litre of fuel as a petrol engine. However, some diesel engines can be made to be much more efficient than petrol engines because they have a different type of fuel, and burn it in a different way. Petrol engines are widely considered to be the most efficient of engines, because they are more refined than diesel. Since diesel is not completely refined, it cannot completely combust and so does not (in theory) produce as much energy per litre of fuel as a petrol engine. However, some diesel engines can be made to be much more efficient than petrol engines because they have a different type of fuel, and burn it in a different way.
Why aren't steam trains used anymore?
Because they used steam engines, which rely on fire to turn water into steam to power pistons which makes the train move. Also, while in use some of the steam is always released, creating big steam clouds around the locomotive.
Who designed a steam engine that was 40 percent more efficient and significantly cheaper than standard steam engines?
Benjamin Franklin Isherwood
Which engine is more efficient diesel engine or gasoline engine?
Diesel engines are more efficient than gasoline engines.
What is the difference between petrol and diesel engines?
diesel engines doesn't use spark plug but uses heater plug.petrol engines produces more torque than petrol engines but petrol engines produces more acceleration than diesel engines.petrol engine is faster to be heated than diesel engine.
Which is more powerful petrol or diesel engine?
Normally Diesel engines produce more torque than gasoline engines but less horsepower. Gasoline engines rev up quicker and produce higher horsepower at higher rpms. Diesel engines develop their higher torque at lower rpms which allows a diesel to carry a heavier load.
Why do diesel engines have more torque than gas engines?
Engines with longer piston stroke, higher turbo boost pressures, and diesel fuel has more energy in it than gasoline.
Which gives more mileage petrol or diesel?
Diesel engines normally get better fuel economy than gasoline engines.
Which one having high torque petrol or diesel engines?
Diesel engines have much more torque at low rpm.
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.
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)
Why are diesel engines loud?
Diesel engines detonate. Diesel has more potential energy than gasoline, instead of burning evenly, diesel explodes creating a knock or rattle noise.
Why do many cars have diesel engines when petrol gives a better performance?
Some cars have diesel engines because diesel engines give more mileage and diesel is cheaper than gasoline in some countries. In the UK diesel fuel costs more than gas but, because diesel engines give much better mileage (miles per gallon), people are still happy to pay more for the diesel fuel if they run diesel vehicles. Diesel engines last much longer and have much better torque at low revs than a petrol engine.
What is a boat powered by?
A boat is usually powered by two or more diesel engines. Or petrol-powered outboard motors, or sails, or a steam engine, or a turbine, or oars, or a scull, or paddles.
Why are diesel engines found in heavy duty equipment?
Diesel engines have far more torque or pulling power than gasoline engines. Diesel engines also last much longer than gas engines because they are built to a much higher standard of durability. The downside to a diesel is that they cost more to produce. But for heavy equipment they are necessary and a diesel engine can easily last over 1 million miles.
