Based on the equivalent circuit of a 3-phase 4-wire generator-rectifier system,this paper presents the dynamic average-value model(AVM) of 4-wire diode-bridge rectifier under continuous conduction mode(CCM) using state-space averaging method.

The CNG Engine model is a continue time field and mean value engine model.

After simplifying sub models on the basis of a mean-value model,that model was converted to a linear parameter-varying model in which the four state parameters are respectively,the rate of revolution of the diesel engine,air pressure at the intake manifold,air pressure at the exhaust manifold and power of the compressor.

A mean-value model for the turbocharged intercooled diesel engine(DDC2 000) with electric unit pump(EUP) was described in this paper,based on the calculation of engine working process,depended on the analysis of electrical properties and injection characteristics of EUP,and used the data of engine testing.

Based on the mean value model,a dynamic model of a vehicle turbocharged diesel engine is established coming from the test data of a diesel engine.

This paper describes the transient air-fuel ratio control strategy of gasline engine based on Mean Value Model, the applications of artificial intelligence and neural networks in the model identification are also introduced.

A mean value model for gasoline engine is introduced in this paper, and its good performance in hardware in the loop simulation for electronic control gasoline engine proves it useful in engine control design.