ELECTROMAGNETIC SUCTION VALVE AND FUEL SUPPLY PUMP

WIPO Patent Application WO/2023/062684

A1

The purpose of the present invention is to prevent a suction valve from closing due to fluid force when an electromagnetic coil is in an unenergized state. This electromagnetic suction valve comprises: a valve part that is in an open state when not energized and opens/closes a fuel introduction opening; and a stopper that has a bottom section that abuts the valve part in an open state in which the valve part has opened the fuel introduction opening, and a side wall section that faces a side circumferential surface of the valve part. The bottom section of the stopper has a plurality of fuel passage holes. In the direction that the bottom section of the stopper and the valve section face each other, the area of a portion in each of the plurality of fuel passage holes that does not overlap the valve part is greater than the area of a portion that overlaps the valve part.

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KAWANO TATSUO (JP)
HASHIDA MINORU (JP)
USUI SATOSHI (JP)
SAITO ATSUJI (JP)
ITO TAKAFUMI (JP)

PCT/JP2021/037581

April 20, 2023

October 11, 2021

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HITACHI ASTEMO LTD (JP)

F16K1/36; F02M59/36

JP2015057554A	2015-03-26
JP2012154296A	2012-08-16
JP2004218633A	2004-08-05
JP2012251658A	2012-12-20

SHIN-YU INTERNATIONAL PATENT FIRM (JP)

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