Invention Grant
- Patent Title: Electromagnetic valve drive device
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Application No.: US17130645Application Date: 2020-12-22
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Publication No.: US11300067B2Publication Date: 2022-04-12
- Inventor: Noriaki Sumisha , Takahiro Kogure , Kyohei Matsumoto , Daichi Kawakami
- Applicant: KEIHIN CORPORATION
- Applicant Address: JP Tokyo
- Assignee: KEIHIN CORPORATION
- Current Assignee: KEIHIN CORPORATION
- Current Assignee Address: JP Tokyo
- Agency: Cantor Colburn LLP
- Priority: JPJP2020-052032 20200324
- Main IPC: F02D41/20
- IPC: F02D41/20

Abstract:
An electromagnetic valve drive device, that drives a fuel injection valve having a solenoid coil, includes a drive unit configured to drive the solenoid coil, an energization control unit configured to control energization for the solenoid coil by controlling the drive unit, a processing unit configured to obtain a current value arrival time, which is a time having elapsed from a start of energization for the solenoid coil until a current flowing through the solenoid coil reaches a predetermined current value, and an estimation unit configured to estimate a valve opening start time, which is a time from the start of the energization to a start of opening of the fuel injection valve on the basis of the current value arrival time.
Public/Granted literature
- US20210301748A1 ELECTROMAGNETIC VALVE DRIVE DEVICE Public/Granted day:2021-09-30
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