Invention Grant
- Patent Title: Systems and methods for increasing engine power output under globally stoichiometric operation
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Application No.: US16559448Application Date: 2019-09-03
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Publication No.: US11248554B2Publication Date: 2022-02-15
- Inventor: Aakash Puntambekar
- 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 Geoffrey Brumbaugh
- Main IPC: F02D41/26
- IPC: F02D41/26 ; F02D21/04 ; F02D41/00 ; F02D37/02 ; F02D23/00 ; F02M26/43 ; F02D41/14

Abstract:
Methods and systems are provided for increasing engine power via partial engine enrichment and exhaust gas recirculation. In one example, a method may include enriching a first set of engine cylinders and enleaning a second, remaining set of the engine cylinders, exhaust gas from the first set and the second set producing a stoichiometric mixture at a downstream emission control device, and providing exhaust gas recirculation (EGR) to an intake passage of the engine from the first set of cylinders and not from the second set. In this way, cooling effects from the partial enrichment and the EGR enable engine air flow, and thus engine power, to be increased while an efficiency of the emission control device is maintained, thereby decreasing vehicle emissions.
Public/Granted literature
- US20210062748A1 SYSTEMS AND METHODS FOR INCREASING ENGINE POWER OUTPUT UNDER GLOBALLY STOICHIOMETRIC OPERATION Public/Granted day:2021-03-04
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