发明名称 |
Spark plug degradation detection |
摘要 |
Methods and systems are provided for identifying and indicating degradation of an engine cylinder spark plug. In response to a cylinder misfire event during selected engine operating conditions, followed by an occurrence of a threshold number and/or rate of pre-ignition events in the same cylinder, a controller may determine that the spark plug is degraded. The controller may limit combustion in the cylinder in response to the degradation. Additionally, cylinder pre-ignition mitigating steps may be taken. |
申请公布号 |
US8683976(B2) |
申请公布日期 |
2014.04.01 |
申请号 |
US201113028872 |
申请日期 |
2011.02.16 |
申请人 |
CUNNINGHAM RALPH WAYNE;ZAITZ MICHAEL JOSEPH;JAHR KEN;GLUGLA CHRIS PAUL;BASKINS ROBERT SAROW;FORD GLOBAL TECHNOLOGIES, LLC |
发明人 |
CUNNINGHAM RALPH WAYNE;ZAITZ MICHAEL JOSEPH;JAHR KEN;GLUGLA CHRIS PAUL;BASKINS ROBERT SAROW |
分类号 |
F02M15/00 |
主分类号 |
F02M15/00 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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