基于电喷发动机的挖掘机控制系统设计

Excavator electronic control system design for electronic fuel injection engines

现有的机械式发动机排放差、能耗高,采用电喷发动机作为挖掘机的动力源将提高燃油效率,开发电喷发动机的控制系统具有重要意义.在现有挖掘机控制系统的功能分析基础上,确定了基于电喷发动机的控制系统的功能原理图,分析了J1939的协议,确定了电喷发动机的主要参数的解析和控制方法,通过CoDeSys(Controlled Development System)平台设计了电喷发动机的控制系统,并进行了控制试验.试验结果表明:设计的控制系统能正确控制发动机转速和实现相关参数的测量,对挖掘机的电控节能研究具有一定的参考价值.

Owing to such problems as poor fuel emission and high fuel consumption of conventional mechanical engines, it is necessary to develop the control system of electronic fuel injection engines as an excavator power source so as to improve fuel efficiency. Based on the functional analysis on traditional excavators, the excavator functional scheme is first proposed. With J1939 protocol, an analytical and control method is employed for main parameters. By designing the control system via CoDeSysTM platform, the control testing is then completed. Finally,it is observed from testing results that the proposed system can be precisely applied for engine rotary speed control and relevant parameter measurement. Therein, this approach sets a foundation on excavator electronic energy-saving.