In order to solve the problem that a diesel engine starts difficultly under the condition of low temperature, this paper analyses the spontaneous ignition process and the factors affecting the formative rate of radical pair intermidiates, and furthermore analyses the auxilisry combustion mechanism of diesel engine starting fluid by employing the principles of chemicalreaction-dynamics.

Introduce the function of soft-starting system in belt-conveyor,explain the hydro-viscous transmission theory,expounds mostly the mechanical principle,hydraulic control system principle and electric control principle about hydro-viscous soft-starting devices.

Research of optimal fuzzy control of hydroviscous drive soft starter of belt conveyor;

Large-scale synchronous motor liquid state soft start;

Application of liquid state soft starting in high voltage synchronous motor;

This article elaborated liquid state soft start technology in Angang large-scale agglutination main drawing fan\'s application situation, from production practice angle explanation liquid state soft start technology stable reliable, the automaticity is high, but widely applies in similar high-pressured air blower\'s each kind of load, has the widespread application prospect.