Invention Grant
- Patent Title: Start-up control device and start-up control method for internal combustion engine
- Patent Title (中): 内燃机起动控制装置及起动控制方法
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Application No.: US12225430Application Date: 2007-04-11
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Publication No.: US07698054B2Publication Date: 2010-04-13
- Inventor: Tatsuhiko Akita , Mitsuto Sakai , Naoki Kurata
- Applicant: Tatsuhiko Akita , Mitsuto Sakai , Naoki Kurata
- Applicant Address: JP Toyota
- Assignee: Toyota Jidosha Kabushiki Kaisha
- Current Assignee: Toyota Jidosha Kabushiki Kaisha
- Current Assignee Address: JP Toyota
- Agency: Oliff & Berridge, PLC
- Priority: JP2006-110034 20060412
- International Application: PCT/IB2007/000939 WO 20070411
- International Announcement: WO2007/116303 WO 20071018
- Main IPC: F02D41/06
- IPC: F02D41/06 ; F02D45/00 ; F02M7/00

Abstract:
An engine ECU stores a map in which a region at high temperature and high pressure, a region at low temperature and low pressure, and a region provided therebetween are defined by the relationship between the temperature and pressure of fuel and the saturation fuel vapor pressure of the fuel. The engine ECU executes a program including the following steps: when start-up of the engine is requested, detecting the engine cooling water temperature and the fuel pressure; if the detection results fall into the region, setting a pre-feed time; pre-feeding until the fuel pressure reaches a desired fuel pressure threshold; and when the fuel pressure reaches the fuel pressure threshold, starting cranking. In this way, start-up failure due to fuel vapor can be avoided without unnecessarily actuating a fuel pump.
Public/Granted literature
- US20090177372A1 Start-Up Control Device and Start-Up Control Method for Internal Combustion Engine Public/Granted day:2009-07-09
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