Invention Grant
- Patent Title: Fuel injection valve and internal combustion engine
- Patent Title (中): 燃油喷射阀和内燃机
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Application No.: US13120881Application Date: 2010-07-01
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Publication No.: US08827187B2Publication Date: 2014-09-09
- Inventor: Tatsuo Kobayashi
- Applicant: Tatsuo Kobayashi
- 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/JP2010/061239 WO 20100701
- International Announcement: WO2012/001802 WO 20120501
- Main IPC: F02M61/10
- IPC: F02M61/10 ; F02M61/04 ; F02M61/16 ; F02M67/12 ; F02M57/04

Abstract:
A fuel injection valve includes: a nozzle body provided with an injection hole at a tip portion; a needle that is located slidably in the nozzle body and includes a seat portion seated on a seat position in the nozzle body; and an air bubble generation means generating air bubbles in a fuel flowing through the nozzle body, and when a curvature radius is R, a length of a curve is L and a constant is a, an inner peripheral shape of the injection hole includes a curving part passing through a region surrounded by a clothoid curve which is expressed by R×L=a2 and of which the constant a is 0.95 and an clothoid curve of which the constant a is 1.05 or a region surrounded by approximate curves of the clothoid curves at a cross-section surface along a direction of axis of the injection hole.
Public/Granted literature
- US20120000996A1 FUEL INJECTION VALVE AND INTERNAL COMBUSTION ENGINE Public/Granted day:2012-01-05
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