Abstract:With the rapid development of automobile industry, energy saving and environmental protection has became an important direction of the development of the automotive industry. This paper puts forward a new type of plug-in gas-electric hybrid sedan combines natural gas vehicle and the advantage of PHEV, based on the working condition of city road cycle and high road cycling analysis, set up a suitable power system structure, and selected based on the logic threshold power auxiliary and multi-objective based on neural network implementation of the two control strategy. The two control strategy are simulated using ADVISOR software, after get the result of a control strategy is superior to the former, and emissions standards can reach the standard V of the countries, its work efficiency is greatly raised, totally achieved the purpose of energy conservation and emissions reduction.