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公开(公告)号：US20210148316A1
公开(公告)日：2021-05-20
申请号：US16622205
申请日：2018-03-26
发明人： Atsushi NAKAI , Masaki NAGAOKA , Shigeo KUBA
摘要： This fuel injection valve is provided with: a valve seat (15b) and a valve body (27c), which cooperate to open and close a fuel passage; a valve seat member (15) having formed thereon the valve seat (15b) and a guide surface (15c) which guides the valve body (27c); and a cylindrical body (5) having the valve seat member (15) press-fitted in the front end-side end thereof. The valve seat member (15) is configured so that the press-fit section (15f) thereof which is press-fitted in the cylindrical body (5) is provided at a position offset toward the base end of the cylindrical body (5) relative to both the valve seat (15b) and the guide surface (15c) in the direction of the center axis (1x) of the fuel injection valve.
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公开(公告)号：US20180066620A1
公开(公告)日：2018-03-08
申请号：US15554045
申请日：2016-02-05
CPC分类号： F02M61/1806 , F02M51/06 , F02M51/061 , F02M61/162 , F02M61/18 , F02M61/1853 , F02M63/0031
摘要： Disclosed is a fuel injection valve comprising: a fuel injection orifice provided in a downstream side of a valve seat which a valve body moves toward and away from; a swirl chamber having a swirl passage formed around the entry opening of the fuel injection orifice; and a transverse passage whose end is opened in an inner circumferential wall of the swirl chamber in order to provide a fuel into the swirl chamber, wherein a center of the entry opening is shifted from a first position where the velocity component in the swirl direction of the fuel can be maximized to a second position where the velocity component in the swirl direction is reduced, and where a velocity component in a center axis direction of the fuel injection orifice is enhanced. Thereby, it is possible to easily adjust a fuel injection amount and a spray angle.
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公开(公告)号：US20210148317A1
公开(公告)日：2021-05-20
申请号：US16622648
申请日：2018-03-26
发明人： Shigeo KUBA , Akihiro YAMAZAKI , Takahiro SAITO , Masaki NAGAOKA
摘要： Disclosed is a fuel injection valve in which a movable core and a fixed core are enclosed in a cylindrical body. The cylindrical body has an annular groove formed therein, on an outer circumferential side of a region in which the movable core and the fixed core are opposed to each other, to define a thin portion of small wall thickness. In a cross section taken along a center axis of the fuel injection valve, the thin portion has curved line sections on both end sides thereof in a direction along the center axis such that the curved line sections respectively connect a bottom of the annular groove to side edges of the annular groove by curved lines. The curved line sections are provided over a range of larger dimension, from the respective side edges in the direction along the center axis, than a depth dimension of the annular groove.
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