Invention Grant
- Patent Title: Method and apparatus for monitoring a coolant system for an exhaust gas recirculation system
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Application No.: US14527082Application Date: 2014-10-29
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Publication No.: US09670830B2Publication Date: 2017-06-06
- Inventor: Kevin J. McKay , Chad E. Marlett , Steve L. Melby
- Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC
- Applicant Address: US MI Detroit
- Assignee: GM Global Technology Operations LLC
- Current Assignee: GM Global Technology Operations LLC
- Current Assignee Address: US MI Detroit
- Agency: Quinn IP Law
- Main IPC: F02B29/04
- IPC: F02B29/04 ; F02D41/00 ; F02M26/25 ; F02M26/33
Abstract:
A method for monitoring an internal combustion engine includes monitoring thermal efficiency in a heat exchanger of an exhaust gas recirculation (EGR) system with a flow control valve commanded to a first, open state and monitoring thermal efficiency in the heat exchanger with the flow control valve commanded to a second, closed state. The flow control valve is evaluated based upon the monitored efficiencies.
Public/Granted literature
- US20160123278A1 METHOD AND APPARATUS FOR MONITORING A COOLANT SYSTEM FOR AN EXHAUST GAS RECIRCULATION SYSTEM Public/Granted day:2016-05-05
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