In order to solve these problems,this paper analyzed the application of the multi-sensors information fusion technology in air flow test system and proposed a way to design multi-sensors air flue test system based on LabVIEW.

In order to keep the stability of idle speed with better control for the air flow in idle speed mode,a driver circuit of stepper motor is designed in this paper,according to the working theory of idle control device using stepper motor,and the idle device is controlled by a board based Digital Signal Processor(DSP) which integrates the driver circuit.

The flow field of the core engine inlet was numerically calculated to solve the problem that the air flow measured in the air simulated test facility was inconsistent with ground test.

Analysis and evaluation of measurement uncertainty of air flowrate with nozzle

In this paper,the developing situations of domestic and foreign air flowrate measuring technology are discussed,different inspection patterns are com pared and analyzed,and some personal views are put forward.

Introduced is the experiment by a differentialthermo-balance for characteristics of coal used for blast furnace injection at programmed rate of temperature elevation and various air flowrate;influence on ignition weight loss and characteristic temperature at different rate of temperature elevation and air supply analyzed.

For it is difficult to measurement the air flow rate on the medium and large duty marine diesel engines,the emission testing experiments were carried out on small duty marine diesel engines.

Through experiments of changing the inlet air flow rate,we can adjust the hot air outlet temperature as high as possible,which helps to reduce the heat loss and improve the collector efficiency.