国六车载诊断系统发动机冷却系统监测离线标定技术应用研究  

Application Research of Off-Line Calibration Technology for Monitoring of CN6 On-Board Diagnostic Engine Cooling System

作　　者：苏海龙 陈国栋 任亚为 陈国星 王谋举 Su Hailong;Chen Guodong;Ren Yawei;Chen Guoxing;Wang Mouju(Global R&D Center,China FAW Corporation Limited,Changchun 130013)

机构地区：[1]中国第一汽车股份有限公司研发总院,长春130013

出　　处：《汽车工程师》2023年第11期42-48,共7页Automotive Engineer

摘　　要：介绍了国六车载诊断(OBD)系统关于冷却系统的监测要求、诊断原理和标定目标,针对传统标定方法工作量大、标定周期长的问题,应用Simulink搭建了控制器内的冷却系统监测模型,采用离线标定方法完成了某搭载1.2 L直喷增压汽油发动机车辆的发动机冷却系统监测标定工作,离线标定结果满足开发目标,标定成本和标定周期减少2/3以上。This paper introduces the monitoring requirements,diagnostic principles and calibration objectives of the CN6 On-Board Diagnostic(OBD) on cooling system.For the traditional calibration method which has a huge workload and a long calibration period,Simulink was used to build the monitoring model of the cooling system in the controller,and the offline calibration method was used to calibrate the cooling system of a 1.2 L direct-injection supercharged gasoline vehicle.The off-line calibration results meet the development objectives,and the calibration cost and calibration cycle are reduced by more than 2/3.

关 键 词：国六OBD 冷却系统监测 离线标定 水温模型 

分 类 号：U464[机械工程—车辆工程]