Military Engineering Mechanical Cooling Control System Research

When construction machinery travels on the road or climbs the long slope continuously,especially in the plateau alpine regions, where air is thin and the temperature is differentbetween day and night, the engine works in low speed, high load and high temperatureconditions for a long time. If the capacity of the cooling system is not enough, constructionmachinery will not work properly in the plateau regions. At present, the current militaryengineering study of the mechanical cooling system is decentralized, independent and notsystematical, and product testing technology is only for a single part, which can not make thesystem reach optimum. Thus, it is urgent to develop the radiator performance testing andcontrol system to control the temperature of the engine and other parts effectively andimprove the working conditions of the machine. This is important to improve fuel economy,extend engine life, improve engine emissions, reduce fan operation noise and improve theadaptability to adapt in different conditions. This essay will take the loading machine (mode：50)made by LiuGong Machinery Co., Ltd as an example to describe the application of themilitary engineering radiator monitoring system.This system can not only test the performance of the individual components in thecooling system, but it can also monitor the match performance of the cooling system.Firstly, this essay introduces and analyzes the status quo and development trend ofdomestic and foreign military construction machinery cooling system technology. Then theessay is divided into four parts：(1) The Liugong50loader cooling system： It Describes the basic structure and workingprinciple of the cooling system, builds the model by the matching calculation method andthen optimize the radiator loop system and hardware configuration.(2) Parameter detection and anti-jamming design： The parameters of the rotational speed, air temperature, water temperature, oil temperature and other sensor specifications areinclude in this article. In the end, it introduces the system’s anti-jamming design briefly(3) The experimental monitoring system： It introduces the hardware of the monitoringsystem, including the system architecture, the data acquisition card and PLC and its D/A andA/D module. It also elaborates the general idea of the software design based on thehardware.(4) The control system design of WinCC： We design the man-machine interface of themonitoring system based on the WinCC software platform, archive the process value. Thetrend graph or table form of real-time monitoring parameters is demonstrated. We can alsoarchive some calculated parameters, as well as print process data needed.