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1.发明授权公开(公告)号：US10174704B2
公开(公告)日：2019-01-08
申请号：US15331678
申请日：2016-10-21
IPC分类号： F02D41/30 , F01N13/00 , F01N13/10 , F02D41/12 , F02D41/26 , F02M35/10 , F02M35/104 , F02M55/02 , F01N3/08 , F01N3/10 , F02D41/04 , F02N99/00 , B60W20/10
摘要： Methods and systems are provided for controlling a vehicle fuel pump at a fuel shut-off event based at least in part on whether combustion stability issues, or potential stall conditions, are indicated in a drive cycle prior to the fuel shut-off event. In one example, a method may include maintaining power to the fuel pump responsive to the potential stall condition being indicated, and independent of an indicated pressure in a fuel rail configured to receive pressurized fuel from the fuel pump, and where the fuel shut-off event includes a deceleration fuel shut-off event or an idle stop event. In this way, fuel may be kept flowing across the fuel pump during fuel shut-off events, responsive to indications of combustion stability issues, such that fuel pump cavitation and other engine and fuel pump-related complications may be avoided.
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2.发明申请公开(公告)号：US20180112619A1
公开(公告)日：2018-04-26
申请号：US15331678
申请日：2016-10-21
IPC分类号： F02D41/30 , F02D41/26 , F02D41/12 , F01N13/10 , F01N13/00 , F02M35/104 , F02M35/10 , F02M55/02
CPC分类号： F02D41/3082 , B60W20/10 , B60W2710/0627 , F01N3/0814 , F01N3/101 , F01N3/103 , F01N13/008 , F01N13/10 , F01N2560/025 , F02D41/042 , F02D41/045 , F02D41/123 , F02D41/26 , F02D2200/0602 , F02D2200/1002 , F02D2200/1012 , F02D2200/1015 , F02D2200/701 , F02D2200/703 , F02M35/1038 , F02M35/10386 , F02M35/104 , F02M55/025 , F02N11/0818 , F02N99/00 , Y02A50/2324 , Y02T10/22 , Y02T10/48 , Y10S903/905
摘要： Methods and systems are provided for controlling a vehicle fuel pump at a fuel shut-off event based at least in part on whether combustion stability issues, or potential stall conditions, are indicated in a drive cycle prior to the fuel shut-off event. In one example, a method may include maintaining power to the fuel pump responsive to the potential stall condition being indicated, and independent of an indicated pressure in a fuel rail configured to receive pressurized fuel from the fuel pump, and where the fuel shut-off event includes a deceleration fuel shut-off event or an idle stop event. In this way, fuel may be kept flowing across the fuel pump during fuel shut-off events, responsive to indications of combustion stability issues, such that fuel pump cavitation and other engine and fuel pump-related complications may be avoided.
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