| 发明名称 |
EXTERNAL EGR RATE FEEDBACK |
| 摘要 |
An engine control system for a vehicle includes an exhaust gas recirculation (EGR) rate-estimation module and a control module. The EGR rate-estimation module receives a first signal indicating a first relative humidity of a flow of air and a second signal indicating a second relative humidity of a mixed flow of air and exhaust gas. The EGR rate-estimation module determines an estimated EGR rate based on the first relative humidity and the second relative humidity, wherein the estimated EGR rate corresponds to a flow rate of a flow of exhaust gas to an engine. The control module selectively adjusts an engine operating parameter based on the estimated EGR rate. |
| 申请公布号 |
US2014222318(A1) |
申请公布日期 |
2014.08.07 |
| 申请号 |
US201313756869 |
申请日期 |
2013.02.01 |
| 申请人 |
GM GLOBAL TECHNOLOGY OPERATIONS LLC |
发明人 |
Ramappan Vijay;Burleigh Darrell W.;Fly Gerald W. |
| 分类号 |
F02D43/04 |
主分类号 |
F02D43/04 |
| 代理机构 |
|
代理人 |
|
| 主权项 |
1. An engine control system for a vehicle, comprising:
an exhaust gas recirculation (EGR) rate-estimation module that receives a first signal indicating a first relative humidity of a flow of air, that receives a second signal indicating a second relative humidity of a mixed flow of air and exhaust gas, and that determines an estimated EGR rate based on the first relative humidity and the second relative humidity, wherein the estimated EGR rate corresponds to a flow rate of a flow of exhaust gas to an engine; and a control module that selectively adjusts an engine operating parameter based on the estimated EGR rate. |
| 地址 |
Detroit MI US |
