| 发明名称 |
COOLING FAN ASSISTED ENGINE-OFF NATURAL VACUUM TEST |
| 摘要 |
A method for a vehicle fuel system, comprising: during an engine-off condition, including an ambient temperature within a threshold range, operating a cooling fan to increase a fuel tank vacuum; and indicating leaks in the vehicle fuel system based on the increased vacuum. In this way, an EONV test may be run at mild ambient temperatures which would not otherwise result in the development of adequate fuel tank vacuum to pass the EONV test. |
| 申请公布号 |
US2015120133(A1) |
申请公布日期 |
2015.04.30 |
| 申请号 |
US201314066540 |
申请日期 |
2013.10.29 |
| 申请人 |
Ford Global Technologies, LLC |
发明人 |
Dudar Aed M.;Jentz Robert Roy;Yang Dennis Seung-Man;Pearce Russell Randall |
| 分类号 |
G01M3/02;G01M17/007 |
主分类号 |
G01M3/02 |
| 代理机构 |
|
代理人 |
|
| 主权项 |
1. A method for a vehicle fuel system, comprising:
during an engine-off condition, including an ambient temperature within a threshold range, operating a cooling fan to increase a fuel tank vacuum; and indicating leaks in the vehicle fuel system based on the increased vacuum. |
| 地址 |
Dearborn MI US |
