| 发明名称 | Method and system for adjusting a fuel tank isolation valve | ||
| 摘要 | Methods and systems are provided for adjusting and diagnosing a position of a fuel tank isolation valve (FTIV) of a fuel system. In one example, a method comprises adjusting a FTIV of a fuel system by sending an electrical pulse to the FTIV; and comparing a current draw of the FTIV to a known current draw profile to verify the position of the FTIV. In this way, the position of the FTIV may be diagnosed, thereby resulting in increased accuracy of subsequent valve control. | ||
| 申请公布号 | US9518677(B2) | 申请公布日期 | 2016.12.13 |
| 申请号 | US201414496707 | 申请日期 | 2014.09.25 |
| 申请人 | Ford Global Technologies, LLC | 发明人 | Dudar Aed M.;Yang Dennis Seung-Man;Jentz Robert Roy;Ognjanovski, Jr. Robert;Aitken Brian Thomas |
| 分类号 | F16K37/00;F02M25/08;F02D41/00 | 主分类号 | F16K37/00 |
| 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, comprising: adjusting a fuel tank isolation valve (FTIV) of a fuel system by sending electrical pulses to the FTIV; counting each of the electrical pulses to track a position of the FTIV; and using a canister temperature to verify the position of the FTIV when the position of the FTIV is unknown or invalid. | ||
| 地址 | Dearborn MI US | ||