By analyzing the igniting characteristics,spreading characteristics and maintenance-fire of the litters,the paper also studied their physical properties,fuel bed characteristics and temperature changes.

In order to study the cotton fabric\'s ignition capacity of the incandescent lamp,different watt incandescent lamps were used in this experiment and the temperature of the surface of lamp and cotton fabric were measured by using point thermometers in this paper.

By making example of QCL03 bunker-cleaner,this paper proposes the qualitative analysis methods on the pulling performance of full hydraulic-driving vehicles whose power installation is explosion-proof electric motor and gains the practical performance curves of the real electric motor,then makes substitution of the formulas to make a quantitative analysis on the pulling performance.

By making example of the double drive loader,this paper proposes the qualitative analysis methods on the pulling performance of full hydraulic-driving vehicles whose explosion-proof electric motor and diesel engine, at gaining the actual performance curve of the electric motor or diesel engine, then makes substitution of the formulas to make a quantitative analysis on the pulling performance.

In the end,traction characteristic equation has been derived,speed regulating characteristics of hydraulic drive system have been anal-yzed.

This paper presents the present condition and main technology data of foreign AC drive passenger locomotive,and the tractive characteristics of the introduce AC drive passenger locomotive are also introduced in this paper.