Invention Grant
- Patent Title: Fuel injection control device and fuel injection control method for internal combustion engine
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Application No.: US14383240Application Date: 2013-03-05
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Publication No.: US09989006B2Publication Date: 2018-06-05
- Inventor: Ryo Suzuki , Takeshi Miyaura , Yoshiyasu Ito , Toyomori Tsuiki , Naoyuki Yamada
- Applicant: Ryo Suzuki , Takeshi Miyaura , Yoshiyasu Ito , Toyomori Tsuiki , Naoyuki Yamada
- Applicant Address: JP Toyota-shi, Aichi-ken JP Kariya-shi, Aichi-ken
- Assignee: Toyota Jidosha Kabushiki Kaisha,Denso Corporation
- Current Assignee: Toyota Jidosha Kabushiki Kaisha,Denso Corporation
- Current Assignee Address: JP Toyota-shi, Aichi-ken JP Kariya-shi, Aichi-ken
- Agency: Finnegan, Henderson, Farabow, Garrett & Dunner LLP
- Priority: JP2012-053246 20120309
- International Application: PCT/IB2013/000528 WO 20130305
- International Announcement: WO2013/132324 WO 20130912
- Main IPC: F02D41/24
- IPC: F02D41/24 ; F02D41/40 ; F02D41/36

Abstract:
An electronic control unit detects a manner of fluctuation of a fuel pressure with injection of fuel by a fuel injection valve with the use of a fuel pressure sensor, and calculates a tendency of deviation of an actual fuel injection characteristic of the fuel injection valve with respect to a basic fuel injection characteristic on the basis of a result of comparison between a detected temporal waveform and a basic temporal waveform. The tendency of deviation is reflected at a predetermined reflection rate (R) at the time of updating a learned value (Gij) for compensating for an individual difference of the fuel injection valve. The predetermined reflection rate (R) is increased when an accumulated value (D) of a vehicle travel distance is shorter than a predetermined value (Dth) as compared with when the accumulated value (D) is longer than or equal to the predetermined value (Dth).
Public/Granted literature
- US20150019110A1 FUEL INJECTION CONTROL DEVICE AND FUEL INJECTION CONTROL METHOD FOR INTERNAL COMBUSTION ENGINE Public/Granted day:2015-01-15
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