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Patent Searching and Data


Title:
FUEL INJECTION VALVE
Document Type and Number:
Japanese Patent JP2012197739
Kind Code:
A
Abstract:

To provide a fuel injection valve for applying a proper damper action to a needle part that is switchably operated for fuel injection, in the fuel injection valve of an internal combustion engine.

The fuel injection valve includes: an injection valve body having a fuel injection hole for injecting fuel of the internal combustion engine; a fuel chamber, which is formed inside the injection valve body, and which communicates with the fuel injection hole; a fuel passage for supplying the fuel to the fuel chamber; and the needle part, which is movably arranged in the axial direction inside the injection valve body, and which opens and closes the fuel injection hole. The fuel injection valve is provided with: a damper chamber, which communicates with the fuel passage, and the volume of which is varied according to the switching action of the fuel injection hole of the needle part to thereby apply the damper action to the needle part through the fuel from the fuel passage; and a flow path resistance variable means for changing the resistance to the movement of the fuel between the damper chamber and the fuel passage according to the switching action of the needle part.


Inventors:
TAKAGI JIRO
ITO YASUSHI
TANNO SHIRO
MICHIKAWAUCHI AKIRA
Application Number:
JP2011063105A
Publication Date:
October 18, 2012
Filing Date:
March 22, 2011
Export Citation:
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Assignee:
NIPPON SOKEN
TOYOTA MOTOR CORP
International Classes:
F02M61/16; F02M61/10; F16K31/06; F16K47/02
Attorney, Agent or Firm:
世良 和信
今堀 克彦
宮下 文徳
川口 嘉之
関根 武彦