- Patent Title: Diagnostic circuit of a voltage suppression circuit in a drive circuit of a fluid injector and method for diagnosing a fault in the voltage suppression circuit
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Application No.: US14420451Application Date: 2013-07-30
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Publication No.: US09618557B2Publication Date: 2017-04-11
- Inventor: Martin A. P. Sykes
- Applicant: DELPHI INTERNATIONAL OPERATIONS LUXEMBOURG S.A.R.L.
- Applicant Address: LU Luxembourg
- Assignee: Delphi International Operations Luxembourg SARL
- Current Assignee: Delphi International Operations Luxembourg SARL
- Current Assignee Address: LU Luxembourg
- Agent Joshua M. Haines
- Priority: GB1217149.2 20120926
- International Application: PCT/EP2013/066004 WO 20130730
- International Announcement: WO2014/048614 WO 20140403
- Main IPC: G01R31/00
- IPC: G01R31/00 ; G01R31/02 ; F02D41/22 ; H01F7/18 ; F01N3/20 ; F01N11/00 ; F02D41/20
Abstract:
A diagnostic circuit arranged to measure an electrical characteristic in a drive circuit of a coil of a fluid injector and compare the measured electrical characteristic with another electrical characteristic to determine whether a PN junction is working to discharge electrical energy in the coil of the fluid injector, in particular a selective catalytic reduction dosing injector.
Public/Granted literature
- US20150204930A1 DIAGNOSTIC CIRCUIT OF A FLUID INJECTOR AND METHOD FOR DIAGNOSING A FAULT Public/Granted day:2015-07-23
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