Invention Grant
- Patent Title: Method and system for vacuum control
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Application No.: US15244711Application Date: 2016-08-23
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Publication No.: US09719391B2Publication Date: 2017-08-01
- Inventor: Joseph Norman Ulrey , Thomas G. Leone , William Charles Ruona , Gopichandra Surnilla , Ross Dykstra Pursifull , John D. Russell
- 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: F01N3/10
- IPC: F01N3/10 ; F01N3/20 ; F02D41/02 ; F02P5/15 ; F02D9/04 ; F02M25/07 ; B60T17/02 ; F01N5/02 ; F02M26/05 ; F02M26/06 ; F02M26/15 ; F02D41/00 ; F02D41/06 ; F02B37/00 ; F02G5/02

Abstract:
Methods and systems are provided for controlling and coordinating control of a post-catalyst exhaust throttle and an EGR valve to expedite catalyst heating. By closing both valves during an engine cold start, an elevated exhaust backpressure and increased heat rejection at an EGR cooler can be synergistically used to warm each of an engine and an exhaust catalyst. The valves may also be controlled to vary an amount of exhaust flowing through an exhaust venturi so as to meet engine vacuum needs while providing a desired amount of engine EGR.
Public/Granted literature
- US20160363023A1 METHOD AND SYSTEM FOR VACUUM CONTROL Public/Granted day:2016-12-15
Information query
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