The numerical simulation three-dimensional and two-phase turbulent reactive flow in a annular combustor is conducted and the performance of combustion from two aspects of the combustor structure and multiple injections is discussed,where RSM Reynolds-stress turbulence model,EBU-Arreniue combustion model and discrete ordinate radiation model are employed.

Based on the numerical simulation, the air flow, mixture of air and fuel, combustion in the combustor are simulated from the point of the multiple injections firstly.

An original multi-point injection system in diesel electronic control of blending ethanol is introduced in this paper.

The controlling method of time-order of multi-point sequential injection system as well as the measure of expanding the range of speed were introduced in detail.

In order to meet the need for nationalization of electronic controlled engine,an authorized electronic controlled system for the use of the multi point injection engine is developed.

In order to make an engine work in timely optimum state ,an authorized electronic controlled system for the multi point injection engine is developed.