| 发明名称 |
APPARATUS AND METHOD FOR DIAGNOSING DETERIORATION OF OXYGEN SENSOR OF VEHICLE |
| 摘要 |
A method of diagnosing deterioration of an oxygen sensor of a vehicle may include detecting a first exhaust gas recirculation (EGR) amount by a mass air flow (MAF) sensor, detecting a second EGR amount by the oxygen sensor, comparing a first difference between the first EGR amount and the second EGR amount with a first predetermined value in a first predetermined operating region, and determining that the oxygen sensor may be in danger of the deterioration when the first difference between the first EGR amount and the second EGR amount may be greater than or equal to the first predetermined value in the first predetermined operating region. |
| 申请公布号 |
US2015184609(A1) |
申请公布日期 |
2015.07.02 |
| 申请号 |
US201414327345 |
申请日期 |
2014.07.09 |
| 申请人 |
Hyundai Motor Company |
发明人 |
YOON Sang Il |
| 分类号 |
F02D41/22;G01N33/00 |
主分类号 |
F02D41/22 |
| 代理机构 |
|
代理人 |
|
| 主权项 |
1. A method of diagnosing deterioration of an oxygen sensor of a vehicle, comprising:
detecting a first exhaust gas recirculation (EGR) amount by a mass air flow (MAF) sensor; detecting a second EGR amount by the oxygen sensor; comparing a first difference between the first EGR amount and the second EGR amount with a first predetermined value in a first predetermined operating region; and determining that the oxygen sensor is in danger of the deterioration when the first difference between the first EGR amount and the second EGR amount is greater than or equal to the first predetermined value in the first predetermined operating region. |
| 地址 |
Seoul KR |
