Invention Grant
- Patent Title: Fuel injection control system for internal combustion engine
- Patent Title (中): 内燃机燃油喷射控制系统
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Application No.: US13499469Application Date: 2011-04-27
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Publication No.: US08820299B2Publication Date: 2014-09-02
- Inventor: Susumu Kojima
- Applicant: Susumu Kojima
- Applicant Address: JP Aichi-ken
- Assignee: Toyota Jidosha Kabushiki Kaisha
- Current Assignee: Toyota Jidosha Kabushiki Kaisha
- Current Assignee Address: JP Aichi-ken
- Agency: Sughrue, Mion, PLLC
- International Application: PCT/JP2011/060319 WO 20110427
- International Announcement: WO2012/147186 WO 20121101
- Main IPC: F02M69/54
- IPC: F02M69/54 ; F02D41/22 ; F02M63/02 ; F02D41/30 ; F02D41/38 ; F02D41/40 ; F02M39/00 ; F02B77/08
Abstract:
An object of the invention is to detect, in a fuel injection control system for an internal combustion engine equipped with a low pressure fuel pump and a high pressure fuel pump, a failure in the fuel injection system including the high pressure fuel pump with high accuracy. To achieve the object, in the fuel injection control system for an internal combustion engine equipped with a low pressure fuel pump and a high pressure fuel pump according to the invention, when a discharge failure in the high pressure fuel pump is detected, the discharge pressure of the low pressure fuel pump is increased. Then, it is determined whether a discharge failure in the high pressure fuel pump occurs or not. If occurs, it is concluded that the fuel injection system including the high pressure fuel pump is in failure.
Public/Granted literature
- US20140053812A1 FUEL INJECTION CONTROL SYSTEM FOR INTERNAL COMBUSTION ENGINE Public/Granted day:2014-02-27
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