| 发明名称 | Methods and systems for an intake oxygen sensor | ||
| 摘要 | Methods and systems are provided for correcting an EGR rate determined based on an intake manifold oxygen sensor based on an air-fuel ratio of EGR. The output of the sensor is corrected to compensate for extra fuel in rich EGR or extra air in lean EGR and used to reliably estimate the EGR rate. One or more engine operating parameters are adjusted based on an uncorrected output of the sensor. | ||
| 申请公布号 | US9518529(B2) | 申请公布日期 | 2016.12.13 |
| 申请号 | US201314052633 | 申请日期 | 2013.10.11 |
| 申请人 | Ford Global Technologies, LLC | 发明人 | Surnilla Gopichandra;Clark Timothy Joseph;Hilditch James Alfred;Gerhart Matthew John |
| 分类号 | F02D43/00;F02D41/00;F02D41/14;F02D41/30 | 主分类号 | F02D43/00 |
| 代理机构 | Alleman Hall McCoy Russell & Tuttle LLP | 代理人 | Voutyras Julia;Alleman Hall McCoy Russell & Tuttle LLP |
| 主权项 | 1. A method for an engine, comprising: in response to an EGR air-fuel ratio being richer than a threshold, correcting an intake oxygen sensor output with a correction factor based on a richness of the EGR air-fuel ratio; andadjusting each of an EGR rate and a cylinder fuel injection based on the corrected intake oxygen sensor output. | ||
| 地址 | Dearborn MI US | ||