Invention Grant
- Patent Title: Systems and methods for controlling a fuel pump in start/stop and hybrid electric vehicles
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Application No.: US15331678Application Date: 2016-10-21
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Publication No.: US10174704B2Publication Date: 2019-01-08
- Inventor: Dennis Seung-Man Yang , Kenneth L. Pifher , Jacob Doan , Larry J. Wroza
- Applicant: Ford Global Technologies, LLC
- Applicant Address: US MI Dearborn
- Assignee: Ford Global Technologies, LLC
- Current Assignee: Ford Global Technologies, LLC
- Current Assignee Address: US MI Dearborn
- Agency: McCoy Russell LLP
- Agent David Kelley
- Main IPC: F02D41/30
- IPC: 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

Abstract:
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.
Public/Granted literature
- US20180112619A1 SYSTEMS AND METHODS FOR CONTROLLING A FUEL PUMP IN START/STOP AND HYBRID ELECTRIC VEHICLES Public/Granted day:2018-04-26
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