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Patent Searching and Data


Title:
FUEL INJECTION DEVICE
Document Type and Number:
WIPO Patent Application WO/2017/145560
Kind Code:
A1
Abstract:
A fuel injection device equipped with a valve body (40, 240), a valve member (60), a switch valve mechanism (70, 270) having a first valve element (71, 271) and a second valve element (76, 276) arranged in series inside an outflow path (43, 243), and a driving unit (30). When neither a first driving force nor a second driving force is being generated the driving unit seats the first valve element and the second valve element on the valve body, thereby closing the outflow path. When the first driving force is being generated the driving unit causes the first valve element, which is separated from the valve body, to make contact with a first contact part (76b, 276b) of the second valve element such that the second valve element is not separated from the valve body, thereby restricting the outflow path to a first constricted state. When the second driving force is being generated the driving unit causes the second valve element to separate from the valve body by the pressing of the first valve element on the first contact part, and causes a second contact part (76c, 276c) provided on the second valve element on the opposite side from the first contact portion to make contact with the valve body, thereby restricting the outflow path to a second constricted state in which the flow path area is greater than in the first constricted state.

Inventors:
FUJINO TOMOKI (JP)
KAWAMURA JUN (JP)
ISHIZUKA KOJI (JP)
SUGAWARA SATOSHI (JP)
Application Number:
PCT/JP2017/000944
Publication Date:
August 31, 2017
Filing Date:
January 13, 2017
Export Citation:
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Assignee:
DENSO CORP (JP)
International Classes:
F02M47/00; F02M47/02; F02M51/06
Foreign References:
JP2010236375A2010-10-21
JP2007505255A2007-03-08
JP2002322960A2002-11-08
JP2008309015A2008-12-25
JP2010019147A2010-01-28
JP2010174781A2010-08-12
JP2006090262A2006-04-06
Attorney, Agent or Firm:
JIN SHUNJI (JP)
Gold Junki (JP)
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