Invention Grant
- Patent Title: Fuel injection valve control device
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Application No.: US15543741Application Date: 2015-12-22
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Publication No.: US10087875B2Publication Date: 2018-10-02
- Inventor: Masayuki Niwa , Noritsugu Kato , Makoto Tanaka
- Applicant: DENSO CORPORATION
- Applicant Address: JP Kariya
- Assignee: DENSO CORPORATION
- Current Assignee: DENSO CORPORATION
- Current Assignee Address: JP Kariya
- Agency: Nixon & Vanderhye P.C.
- Priority: JP2015-008331 20150120
- International Application: PCT/JP2015/006370 WO 20151222
- International Announcement: WO2016/116993 WO 20160728
- Main IPC: F02D41/40
- IPC: F02D41/40 ; F02M51/06

Abstract:
A fuel injection valve control device controlling a fuel injection valve that injects a fuel into a combustion chamber includes an operation-condition calculation portion that calculates a fuel injection condition of the fuel injection valve based on a crank angle detected by a crank angle sensor that detects the crank angle of an engine, a current-waveform setting portion that sets a current waveform of a current supplied to the fuel injection valve on the basis of the fuel injection condition calculated by the operation-condition calculation portion, and so on. The current-waveform setting portion sets the current waveform so as to set a temporal change of a pickup current of a needle provided in the fuel injection valve to be equal to or less than a predetermined reference value when a fuel injection start timing is equal to or more than 180 degrees BTDC. The current-waveform setting portion sets the current waveform so as to set a temporal change of the pickup current of the needle to be more than the predetermined reference value when the fuel injection start timing is smaller than 180 degrees BTDC.
Public/Granted literature
- US20180010546A1 FUEL INJECTION VALVE CONTROL DEVICE Public/Granted day:2018-01-11
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