| 发明名称 | Engine-off refueling detection method | ||
| 摘要 | A method for an engine fuel system comprises, during an engine-off condition, indicating a refueling event based on a rate of change in fuel tank pressure, and aborting a diagnostic leak detection test based on the refueling event indication. Indicating a refueling event further comprises indicating a refueling event based on the rate of change in fuel tank pressure being greater than a first threshold when the canister vent valve is open, and greater than a second threshold when the canister vent valve is closed, the first threshold being less than the second threshold. | ||
| 申请公布号 | US9341147(B2) | 申请公布日期 | 2016.05.17 |
| 申请号 | US201313788624 | 申请日期 | 2013.03.07 |
| 申请人 | Ford Global Technologies, LLC | 发明人 | Jentz Robert Roy;Peters Mark W.;Clemens Dave;Dudar Aed M. |
| 分类号 | G01M3/04;F02M25/08;F02D41/00 | 主分类号 | G01M3/04 |
| 代理机构 | Alleman Hall McCoy Russell & Tuttle LLP | 代理人 | Dottavio James;Alleman Hall McCoy Russell & Tuttle LLP |
| 主权项 | 1. A method for an engine fuel system, comprising: during an engine-off condition, indicating a refueling event based on a rate of change in fuel tank pressure being greater than a first threshold when a canister vent valve is open, and greater than a second threshold when the canister vent valve is closed, the first threshold being less than the second threshold; andaborting a diagnostic leak detection test based on the refueling event indication. | ||
| 地址 | Dearborn MI US | ||