Huh - who says?
diesel is usually ignited (except when starting cold) by the increase in pressure and temperature resulting from compression in the cylinder. Gasoline generally requires a spark plug. (unless the cylinder or deposits in the cylinder get so hot they ignite before the spark which is terrible for the engine)
http://www.scribd.com/doc/7292781/Differences-Between-Octane-Number-and-Cetane-Number#scribd
Why is gasoline (octane) better than diesal (cetane)?
2 answers
better? That is debatable.
diesel does not have to be refined as much.
Diesel is not likely to explode as easily. Gasoline has a higher vapor pressure, so ignites easier than diesel.
Why is gasoline "better" than diesel? Depends on one's viewpoint and use.
diesel does not have to be refined as much.
Diesel is not likely to explode as easily. Gasoline has a higher vapor pressure, so ignites easier than diesel.
Why is gasoline "better" than diesel? Depends on one's viewpoint and use.
1 answer