Automobile engine characteristics?

Automobile engine is the device that provides power for the automobile, which is the heart of the automobile and determines the power, economy, stability and environmental protection of the automobile. According to different sources of power, automobile engines can be divided into diesel engines, gasoline engines, electric vehicles electric motors and hybrids.

The common gasoline engine and diesel engine belong to the reciprocating piston internal combustion engine, is the chemical energy of the fuel into the mechanical energy of the piston movement and external power output. Gasoline engine high speed, small mass, low noise, easy to start, low manufacturing cost; diesel engine compression ratio, high thermal efficiency, economic performance and emission performance than gasoline engine.