Invention Grant
- Patent Title: Fuel injection valve, internal combustion engine and fuel injection method
- Patent Title (中): 燃油喷射阀,内燃机和燃油喷射方式
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Application No.: US14232044Application Date: 2012-07-04
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Publication No.: US09435308B2Publication Date: 2016-09-06
- Inventor: Kaoru Maeda , Yuichiro Goto , Wolfram Wiese , Daniel Scherrer
- Applicant: Kaoru Maeda , Yuichiro Goto , Wolfram Wiese , Daniel Scherrer
- Applicant Address: JP Tokyo
- Assignee: Bosch Corporation
- Current Assignee: Bosch Corporation
- Current Assignee Address: JP Tokyo
- Agency: Michael Best & Friedrich LLP
- Priority: JP2011-152979 20110711
- International Application: PCT/JP2012/067077 WO 20120704
- International Announcement: WO2013/008692 WO 20130117
- Main IPC: F02B23/10
- IPC: F02B23/10 ; F02M61/18

Abstract:
It is an object of the present invention to reduce the penetration of a fuel spray directed toward a certain area in a cylinder, thereby reducing oil dilution that increases sliding resistance in the engine, reducing fuel adhesion or the like onto the cylinder liner, and also reducing the adverse effect of a fuel spray having an increased penetration.A fuel injection valve that has a plurality of injection holes and injects fuel into a cylinder 3 of an internal combustion engine includes: injection holes a2 and a6 having a larger diameter for injecting fuel toward a ring-shaped space T1 including areas A2 and A6 of strong tumble flow T formed in the cylinder; and injection holes a1, a4, a3 and a5 having a smaller diameter for injecting fuel toward a space including areas A1, A4, A3 and A5 of weak tumble flow formed in the cylinder 3. A fuel spray from an injection hole having the larger diameter has a penetration force to the tumble flow larger than the penetration force of a fuel spray from an injection hole having the smaller diameter.
Public/Granted literature
- US20140130772A1 FUEL INJECTION VALVE, INTERNAL COMBUSTION ENGINE AND FUEL INJECTION METHOD Public/Granted day:2014-05-15
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