Invention Grant
- Patent Title: Method and systems for exhaust gas control
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Application No.: US15045616Application Date: 2016-02-17
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Publication No.: US10253731B2Publication Date: 2019-04-09
- Inventor: Dipankar Deb , Manthram Sivasubramaniam , Prashant Srinivasan , Sharath Sridhar Aramanekoppa , Prem Kumar Patchaikani , Sachin Shivajirao Kulkarni , Sebastian Walter Freund , Jassin Marcel Fritz , Georgios Bikas , James Henry Yager , Shashi Kiran
- Applicant: General Electric Company
- Applicant Address: US CT Norwalk
- Assignee: GE Global Sourcing LLC
- Current Assignee: GE Global Sourcing LLC
- Current Assignee Address: US CT Norwalk
- Agency: McCoy Russell LLP
- Main IPC: F02M26/49
- IPC: F02M26/49 ; F02M26/09 ; F02M26/16 ; F02M26/44 ; F02M26/47 ; F02M26/43 ; F02D41/14 ; F02D41/22 ; F02D41/00 ; F02D41/40 ; F02D9/04

Abstract:
Systems and methods are provided for controlling exhaust gas recirculation (EGR). In one example, an engine system includes a first EGR valve coupling an exhaust manifold to an engine exhaust system, a second EGR valve coupling the exhaust manifold to an engine intake system, and a control unit. The control unit selectively adjusts a position of the first EGR valve based on a target amount, and adjusts a position of the second EGR valve based on the target amount and a position of the first EGR valve. Responsive to a first degradation condition of the first EGR valve, the control unit adjusts the position of the second EGR valve based on the target amount and based on a pressure of the first exhaust manifold, and responsive to a second degradation condition of the first EGR valve, adjusts the position of the second EGR valve based on the target amount.
Public/Granted literature
- US20160160811A1 METHOD AND SYSTEMS FOR EXHAUST GAS CONTROL Public/Granted day:2016-06-09
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