| 发明名称 | Fuel vapor canister purge using reversible vacuum pump | ||
| 摘要 | A method for a fuel system, comprising: during a first condition, purging fuel vapor from a fuel vapor canister to a fuel vapor accumulator; and then during a second condition, evacuating fuel vapor from the fuel vapor accumulator to a fuel tank. The fuel vapor accumulator increases the volume of the fuel system, providing a temporary storage for desorbed fuel vapor. In this way, canister breakthrough of hydrocarbons can be mitigated, thereby reducing bleed emissions. | ||
| 申请公布号 | US9611817(B2) | 申请公布日期 | 2017.04.04 |
| 申请号 | US201414465616 | 申请日期 | 2014.08.21 |
| 申请人 | Ford Global Technologies, LLC | 发明人 | Dudar Aed M.;Yang Dennis Seung-Man;Pearce Russell Randall |
| 分类号 | F02M25/08;F02D41/00;B01D53/04;B60K15/035;B60W20/00;F02N11/08 | 主分类号 | F02M25/08 |
| 代理机构 | McCoy Russell LLP | 代理人 | Dottavio James;McCoy Russell LLP |
| 主权项 | 1. A method for a fuel system, comprising: during a first condition, purging fuel vapor from a fuel vapor canister to a fuel vapor accumulator by pumping air through the fuel vapor canister while maintaining a fuel tank isolation valve and a canister purge valve closed, the fuel tank isolation valve positioned between a fuel tank and the fuel vapor canister; and then during a second condition, evacuating fuel vapor from the fuel vapor accumulator to the fuel tank. | ||
| 地址 | Dearborn MI US | ||