发明名称 |
METHOD AND SYSTEM FOR AIR FUEL RATIO CONTROL AND DETECTING CYLINDER IMBALANCE |
摘要 |
Air/fuel imbalance monitoring systems and methods for monitoring air/fuel ratio imbalance of an internal combustion engine are disclosed. In one embodiment, adjusting engine operation responsive to cylinder air/fuel imbalance based on a determined total number of instances where sensed peak-to-peak exhaust air-fuel ratios differentials are less than a threshold normalized to a total number of peak-to-peak oscillations. The approach can be used to indicate air/fuel ratio imbalances between engine cylinders. |
申请公布号 |
US2016115879(A1) |
申请公布日期 |
2016.04.28 |
申请号 |
US201414524981 |
申请日期 |
2014.10.27 |
申请人 |
Ford Global Technologies, LLC |
发明人 |
Lehmen Allen;McEwan Douglas James;Banker Adam Nathan |
分类号 |
F02D37/02;F02D41/14 |
主分类号 |
F02D37/02 |
代理机构 |
|
代理人 |
|
主权项 |
1. An engine method, comprising:
adjusting engine operation responsive to cylinder air/fuel imbalance, the imbalance determined based on a total number of instances where sensed peak-to-peak exhaust air-fuel ratios differentials are less than a threshold normalized to a total number of peak-to-peak oscillations. |
地址 |
Dearborn MI US |