柴油机EGR电控系统及标定软件设计

摘要

为降低NO<,x>排放,根据废气再循环(EGR)技术系统的工作特点和功能要求,以C8051F340为控制核心,设计了基于步进电机的EGR电控系统.具体给出了控制系统的硬件电路设计和主控制程序.并应用Visual Basic 6.0为EGR系统标定试验和台架试验开发了标定软件.在考虑信号抗干扰能力的前提下,重点讨论了电控系统软硬件的结构与设计.模拟试验分析表明,所设计的EGR电控系统能够根据最佳废气再循环率进行自动控制,标定软件满足应用要求.%In order to reduce NOx emissions, the exhaust gas recycling(EGR) electrical control system based on stepping motor has been designed with C8051 F340 as the control kernel in accordance with the operating features and functional requirements of the EGR system.By adopting Visual Basic 6.0, the software for testing and calibrating EGR system is developed.The hardware circuitry design and main control program are given concretely.The structure and design of the hardware and software are discussed emphatically in consideration of the anti-interference capability.The emulated test and analysis indicate that the electrical control system implements automatic control in accordance with the optimal EGR rate, and the calibration software meets the applicable requirements.