发明名称 |
Methods and systems for variable displacement engine control |
摘要 |
Methods and systems are provided for selecting a group of cylinders for selective deactivation, in a variable displacement engine system, based at least on a regeneration state of an exhaust catalyst. The position of one or more valves and throttles may be adjusted based on the selective deactivation to reduce back-flow through the disabled cylinders while also maintaining conditions of a downstream exhaust catalyst. Pre-ignition and knock detection windows and thresholds may also be adjusted based on the deactivation to improve the efficiency of knock and pre-ignition detection. |
申请公布号 |
US8607544(B2) |
申请公布日期 |
2013.12.17 |
申请号 |
US201113106138 |
申请日期 |
2011.05.12 |
申请人 |
UHRICH MICHAEL JAMES;BANKER ADAM NATHAN;KERNS JAMES MICHAEL;SMITH STEPHEN B.;FORD GLOBAL TECHNOLOGIES, LLC |
发明人 |
UHRICH MICHAEL JAMES;BANKER ADAM NATHAN;KERNS JAMES MICHAEL;SMITH STEPHEN B. |
分类号 |
F01N3/00;F02D7/00;F02D13/06;F02D17/02 |
主分类号 |
F01N3/00 |
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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