(1) Hybrid bus – accounting for more than 90% of China's new energy bus market, is the undisputed leading model. For China's bus industry, the hybrid power is mainly diesel-electric hybrid. The advantage is that it can reduce fuel consumption by more than 30%. The emission standard can reach the national IV level. The disadvantage is that the battery capacity and life problem have not been completely solved. The hybrid bus It belongs to the development period product and allows mass production, but can only be sold and used under the approved area, scope, time limit and conditions, and at least 20% of the sales products are monitored in real time, resulting in the bicycle price not coming down.

(2) Pure electric bus - the battery is used as the power source. Replace the fuel machine with a motor, with low noise and no pollution, using a single electric energy source. Moreover, the battery of a pure electric vehicle can be charged at night by the cheap "valley" of the power grid, which can stabilize the peak-to-valley difference of the power grid. China's pure electric vehicles are mainly used in airports, communities, stadiums and other places. As a start-up product, pure electric buses can only be produced in small batches, demonstration runs under approved areas, ranges, deadlines and conditions, and real-time monitoring of all products.

(3) Fuel cell buses - mainly hydrogen fuel cell buses - are considered to be the most promising products, can truly solve the energy shortage problem, and truly achieve zero emissions. But it is also a start-up product.

(4) CNG passenger car - CNG (compressed natural gas) as a gaseous fuel, more uniform with air, more complete combustion, less harmful substances such as CO, HC, etc.; no natural carbon after combustion, can reduce engine wear The maintenance cost is low; the natural gas engine is simple to modify, especially the dual-fuel engine modified by the gasoline engine, because of the high cost performance and wide use; more importantly, the fuel cost of the natural gas bus is much lower than the same kilometers. Diesel or gasoline engines have very high economic benefits.

(5) LNG passenger car - LNG (liquefied natural gas) can compress natural gas volume more, can be driven once, can travel 500km or even more than 1000km, is very suitable for long-distance transportation, and LNG is liquid, not affected by natural gas pipeline network, and each The indicator is significantly better than LPG.

(6) LPG passenger car - LPG (liquefied petroleum gas) performance and use is basically similar to CNG. There are three main reasons for its use: one is as a substitute for fuel, the other is clean emissions, low pollution, and the third is to use cheap price. However, since liquefied petroleum gas is also derived from petroleum and has limited resources, promotion has been widely questioned.

(7) Alcohol fuel passenger car - Alcohol fuel mainly refers to methanol and ethanol. At home and abroad, a certain proportion of alcohol fuel is mixed in gasoline, and some regions use a high proportion of alcohol fuel. Because of its wide source of methanol fuel, it can be extracted from natural gas, inferior coal, oil sand, wood chips and other materials that can produce carbon monoxide and hydrogen. The production process is simple, the equipment is small, and the transportation is convenient. Therefore, it has been mainly used in China. However, international research on ethanol fuel has received more attention.

(8) Other energy buses - There are mainly DME fuels and hydraulic hybrid buses and super capacitor buses in China.