What is the difference between a diesel engine and a gasoline engine?

1. Ignition is different. A gasoline engine requires a spark plug to ignite the mixture, while a diesel engine is compression auto-ignition ignition.

2. The compression ratio is different. Gasoline engines are made of aluminum alloy, plastic and other materials. Small size, light weight, easy to start, smooth running, fast speed. Diesel engine compression ratio is large, the cylinder because it has to withstand greater pressure and made more solid and bulky, generally made of steel, iron and other materials.

3, compared with gasoline engines, diesel engines, diesel fuel is cheap, good economy, and it does not have an ignition system, so there are fewer failures.

4, diesel engines are safe compared to gasoline engines. Because diesel fuel is not volatile compared with gasoline, the ignition point is higher, not easy to be ignited by chance or explosion, so the use of diesel engines is more stable and safe than the use of gasoline engines.

5, the applicable means of transportation are different: gasoline engines are suitable for automobiles, airplanes and other requirements of the volume of filial piety and speed of the means of transport. Diesel engines are suitable for large trucks, tractors, locomotives and ships with large loads.

Baidu Encyclopedia - Diesel Engine Working Principle

Baidu Encyclopedia - Gasoline Engine