| 发明名称 |
METHOD FOR DIAGNOSING EGR SYSTEM AND METHOD FOR CONTROLLING FUEL INJECTION USING THE SAME |
| 摘要 |
A method for diagnosing an EGR system, includes: a first measuring step of measuring a pressure in an intake manifold; a second measuring step of measuring a pressure and a temperature between an EGR cooler and an EGR valve; a determining step of calculating and determining an opening area of the EGR valve for satisfying a target flow of EGR using a function of the target flow of EGR, the pressure in the intake manifold, and the temperature and the pressure between the EGR cooler and the EGR valve; and a diagnosing step of diagnosing whether the EGR cooler is abnormal by comparing the temperature measured between the EGR cooler and the EGR valve and a reference temperature with each other at the time of exhausting EGR gas at the determined opening area of the EGR valve. |
| 申请公布号 |
US2014372011(A1) |
申请公布日期 |
2014.12.18 |
| 申请号 |
US201314044536 |
申请日期 |
2013.10.02 |
| 申请人 |
Kia Motors Corp. ;Hyundai Motor Company |
发明人 |
Kim Seung Bum |
| 分类号 |
F02D41/00;F02D41/30 |
主分类号 |
F02D41/00 |
| 代理机构 |
|
代理人 |
|
| 主权项 |
1. A method for diagnosing an exhaust gas recirculation (EGR) system, comprising:
a first measuring step of measuring a pressure in an intake manifold; a second measuring step of measuring a pressure and a temperature between an EGR cooler and an EGR valve; a determining step of calculating and determining an opening area of the EGR valve for satisfying a target flow of EGR using a function of the target flow of EGR, the pressure in the intake manifold, and the temperature and the pressure between the EGR cooler and the EGR valve; and a diagnosing step of diagnosing whether the EGR cooler is abnormal by comparing the temperature measured between the EGR cooler and the EGR valve and a reference temperature with each other at the time of exhausting EGR gas at the determined opening area of the EGR valve. |
| 地址 |
Seoul KR |
