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.
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申请公布号 |
US2011265454(A1) |
申请公布日期 |
2011.11.03 |
申请号 |
US201113106181 |
申请日期 |
2011.05.12 |
申请人 |
FORD GLOBAL TECHNOLOGIES, LLC |
发明人 |
SMITH STEPHEN B.;UHRICH MICHAEL JAMES;KERNS JAMES MICHAEL;BANKER ADAM NATHAN |
分类号 |
F01N3/18;F02D17/02;F02M25/07 |
主分类号 |
F01N3/18 |
代理机构 |
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地址 |
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