This paper introduces the present management of lubricating grease used in railway in China, points out some technical problems that need to be solved, and probes into the components and operation principles of issuing control equipment of lubricating grease used in railway.

In winter,the oil way of the diesel vehicle always arises the solidification phenomenon and therefore makes the engine stopped.

This paper points out the incompleteness of the fuel line in diesel rock drill, then the structure of the fuel line is improved and the quality of diesel rock drills is improved greatly.

This paper analyzes the common fuel line malfunctions of diesel engine and gives the removal methods.

This paper mainly introduces how to use PLC for the airproof quality testing of water and oil circuits as well as the control of the control system of liquid level and solenoid valve of the gas circuit.