Invention Grant
- Patent Title: System and method for waste-gate valve diagnostics
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Application No.: US16256774Application Date: 2019-01-24
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Publication No.: US10823092B2Publication Date: 2020-11-03
- Inventor: Michael Bastanipour , Nicholas Herhusky , Timothy Stolzenfeld , Baitao Xiao
- 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: F02D41/00
- IPC: F02D41/00 ; F02B37/18 ; F02D23/00 ; F02D41/22 ; F02B37/16

Abstract:
Methods and systems are provided for diagnosing an exhaust waste-gate valve via an electric boost assist motor of an electric turbocharger. Degradation of the waste-gate valve is inferred based on the motor torque profile of the motor after commanding the waste-gate valve to an open or closed position on a torque transient. Deviation of the motor torque profile from the expected profile is used to infer if the valve is stuck open or closed, and actions are taken accordingly.
Public/Granted literature
- US20200240334A1 SYSTEM AND METHOD FOR WASTE-GATE VALVE DIAGNOSTICS Public/Granted day:2020-07-30
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