发明名称 |
FUEL SYSTEM DIAGNOSTICS |
摘要 |
Methods and systems are provided for detecting a fuel tank oil-canning event during conditions when a vacuum is applied to the fuel tank, such as during a fuel system leak test or during purging of a fuel system canister. In one example, a method may include comparing the fuel tank pressure changes during a leak test to changes in fuel tank temperature or fill level and indicating fuel tank oil-canning in response to a higher than threshold rise in fuel tank pressure during or following application of vacuum to the fuel tank while each of a fuel temperature and fill level remain unchanged. By detecting fuel tank oil-canning accurately, appropriate countermeasures can be taken. |
申请公布号 |
US2016290286(A1) |
申请公布日期 |
2016.10.06 |
申请号 |
US201514672809 |
申请日期 |
2015.03.30 |
申请人 |
Ford Global Technologies, LLC |
发明人 |
Dudar Aed M.;Yang Dennis Seung-Man;Ognjanovski, JR. Robert |
分类号 |
F02M25/08 |
主分类号 |
F02M25/08 |
代理机构 |
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代理人 |
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主权项 |
1. A method for a fuel system, comprising:
indicating fuel tank oil-canning responsive to a higher than threshold rise in fuel tank pressure during or following application of vacuum to a fuel tank while each of a fuel temperature and fill level remain within a range. |
地址 |
Dearborn MI US |