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.: US12063341Application Date: 2007-04-11
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Publication No.: US07934490B2Publication Date: 2011-05-03
- Inventor: Naoki Kurata , Tatsuhiko Akita
- Applicant: Naoki Kurata , Tatsuhiko Akita
- 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
- Priority: JP2006-110037 20060412
- International Application: PCT/IB2007/000940 WO 20070411
- International Announcement: WO2007/116304 WO 20071018
- Main IPC: F02G5/00
- IPC: F02G5/00

Abstract:
An engine ECU stores a map in which three regions, that is, a high-temperature region, a low-temperature region, and a region therebetween, are prescribed. The pre-feed time T set when the present condition falls in the region is the longest. An engine ECU executes a program that includes the step of detecting an engine cooling water temperature THW when the start-up of the engine is requested, the step of executing the pre-feed until the fuel pressure P becomes equal to or greater than a fuel pressure threshold value P(TH), and the step of starting the cranking when the fuel pressure P becomes equal to or greater than the fuel pressure threshold value P(TH). Thus, the bad start-up caused by fuel vapor is avoided without operating the fuel pump unnecessarily for a long time.
Public/Granted literature
- US20100163004A1 START-UP CONTROL DEVICE AND START-UP CONTROL METHOD FOR INTERNAL COMBUSTION ENGINE Public/Granted day:2010-07-01
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