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)
Diesel engines have more torque especially at low rpms. This gives them much more pulling power. They also last much longer that gasoline engines. require less maintenance, and get better fuel economy.
More torque, less maintenance, longer engine life, and uses less fuel.
Diesel tractors are superior to gas tractors because diesel engines have fewer maintenance issues and produce more useful energy.
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.
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.
Diesel engines are more efficient than gasoline 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.
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.
Diesel engines have such a high engine compression ratio, they require a more powerful starter, which in turn requires more battery power. That is why diesels have two batteries.
Engines with longer piston stroke, higher turbo boost pressures, and diesel fuel has more energy in it than gasoline.
Diesel engines normally get better fuel economy than gasoline engines.
Diesel engines have much more torque at low rpm.