Invention Grant
- Patent Title: System and methods for improving fuel economy
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Application No.: US15139110Application Date: 2016-04-26
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Publication No.: US09856829B2Publication Date: 2018-01-02
- Inventor: Thomas G. Leone , Kenneth James Miller , Douglas Raymond Martin
- 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 Julia Voutyras
- Main IPC: F02M26/01
- IPC: F02M26/01 ; F02B37/16 ; F02B37/24 ; B60W10/06 ; B60W10/24 ; B60W10/26 ; B60W20/00

Abstract:
Methods and systems are provided for controlling engine operation in a hybrid vehicle, where the vehicle engine comprises one or more cylinders dedicated to recirculating exhaust to the intake manifold. In one example, if an engine load decreases below a level where dedicated exhaust gas recirculation may lead to combustion stability issues, engine load may be increased above the demanded load and the excess power used to charge a system battery, or if the battery state of charge is above a threshold, the engine may be shut down and the vehicle propelled via battery power. In this way, fuel economy and combustion stability issues may be improved, NOx emissions reduced, and costs for implementation of dedicated exhaust gas recirculation decreased.
Public/Granted literature
- US20170306893A1 SYSTEM AND METHODS FOR IMPROVING FUEL ECONOMY Public/Granted day:2017-10-26
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