As a car enthusiast, I paid great attention to the development of domestic cars dynamic, especially in recent years, world fuel shortage, price rises quickly, environmental protection, high calls the situation, the more inspired us explore relevant issues of interest. Automotive innovation is the key power systems. Power system of the most important traits in driving mode .Let us first examine the drive mode of evolutionary history (Hantula 2009).
In 1801, Richard Trevithick creates the earliest steam cars. In the initial period of development steam cars, their designs are simple, is a steam engine mount chassis and wheel. In order to reach a certain output power, there must be a large boiler, In order to attain the certain trip, and to prepare sufficient water and coal; Body weight, will demand have a pair of strong chassis and strong wheels. So car more bulky manipulation has become increasingly difficult (Hantula 2009).