| 发明名称 |
System and methods for purging a fuel vapor canister |
| 摘要 |
A method for purging a fuel vapor canister, comprising: responsive to a canister load decreasing below a first threshold, reversing a direction of air flow through the fuel vapor canister while maintaining purge air intake at a vent line inlet. By reversing the direction of air flow through the fuel vapor canister, canister regions that would normally retain fuel vapor during a purge event may realize increased desorption when the air flow direction is reversed. In this way, the efficiency of a purge event may be increased and bleed emissions may be reduced. |
| 申请公布号 |
US9605610(B2) |
申请公布日期 |
2017.03.28 |
| 申请号 |
US201414301246 |
申请日期 |
2014.06.10 |
| 申请人 |
Ford Global Technologies, LLC |
发明人 |
Dudar Aed M. |
| 分类号 |
F02D41/00;F02M25/08 |
主分类号 |
F02D41/00 |
| 代理机构 |
|
代理人 |
Dottavio James;Russell John D.;McCoy B. Anna |
| 主权项 |
1. A method for purging a fuel vapor canister coupled to an engine intake and a vent line inlet, comprising:
with a controller, responsive to a canister load decreasing below a first threshold, reversing a direction of air flow through the fuel vapor canister via an actuator while maintaining purge air intake at the vent line inlet and purge gas delivery to the engine intake, the fuel vapor canister load being determined from sensed conditions. |
| 地址 |
Dearborn MI US |
