公开(公告)号：US20180051665A1

公开(公告)日：2018-02-22

申请号：US15559829

申请日：2016-02-01

申请人： USUI CO, LTD.

发明人： Hiroyuki NISHIZAWA ,  Shuji SUZUKI

IPC分类号： F02M55/02

CPC分类号： F02M55/025 ,  F02M2200/05 ,  F02M2200/8076 ,  F02M2200/9053 ,  F02M2200/9076

摘要： To obtain a gasoline direct injection rail that enables plating treatment to be easily and reliably performed on the inside of a rail body and an inlet part, also, that includes an orifice, and that has excellent mechanical properties. In a gasoline direct injection rail comprising a steel rail body 4, an inlet part 6 provided integrally with or separately from a first end 5 of the rail body 4 and comprising therein a communication passage 7 in communication with a fuel passage of the rail body 4, and a plurality of injector holders in communication with the fuel passage, a stainless orifice member 1 formed separately from the rail body 4 is securely disposed in the communication passage 7 of the inlet part 6.

公开(公告)号：US20180347527A1

公开(公告)日：2018-12-06

申请号：US15779529

申请日：2016-10-13

申请人： USUI CO., LTD.

发明人： Shuji SUZUKI

IPC分类号： F02M55/02 ,  F02M37/00 ,  F02M63/02

CPC分类号： F02M55/02

摘要： To make it possible to prevent damage to a brazed part without increasing the thickness of a rail body even when the rail body and an end cap are fixed to each other by brazing, in view of high-pressure gasoline direct injection systems of the future. A gasoline direct injection rail comprising end caps 2 disposed inside respective ends of a rail body 1, with an outer circumference 3 of each end cap 2 and an inner circumference 4 of the rail body 1 being fixed to each other by brazing, wherein a reinforcing ring 6 having an axial length L of L≥5 mm is provided on the outer circumference 3 of the rail body 1; a first end 10 on an end cap 2 side of the reinforcing ring 6 is positioned so as not to overlap a brazed part 12 between the rail body 1 and the end cap 2; a distance X from the first end 10 of the reinforcing ring 6 to a distal end 13 of the brazed part 12 is 0 mm≤X≤15 mm; and a thickness of the reinforcing ring 6 is 40% or more of a thickness of the rail body 1.

公开(公告)号：US20200340435A1

公开(公告)日：2020-10-29

申请号：US16769241

申请日：2018-08-06

申请人： USUI CO., LTD.

发明人： Shuji SUZUKI

IPC分类号： F02M55/02 ,  F02M55/00

摘要： The present invention aims for obtaining a fuel rail for gasoline direct injection which can be used for the direct injection at a high fuel pressure of 50 MPa or more by increasing the thickness at the portion near the branch hole and using the material having high thickness for the metal seal portion while keeping the weight light and keeping the cost low. A fuel rail for gasoline direct injection made of steel and used at a fuel pressure of 50 MPa or more, the fuel rail having: a plurality of block members 2; and a pipe member 1 which connects an interval between the block members, wherein the block members 2 have: a branch hole 3 which communicates with the pipe member 1; and a metal seal portion 6 to which an injector is connected, and the hardness of the block members 2 is higher than the hardness of the pipe member 1.

公开(公告)号：US20200149502A1

公开(公告)日：2020-05-14

申请号：US16325706

申请日：2017-06-26

申请人： USUI CO., LTD.

发明人： Koichi HAYASHI ,  Shuji SUZUKI

IPC分类号： F02M55/00 ,  F02M55/02

摘要： To obtain a gasoline direct injection rail in which a large load is unlikely to be concentrated on a boundary part between a rail body and an end cap, and damage to the boundary part can be prevented, even when high pressure is applied to the inside of the rail body. The gasoline direct injection rail comprises an end cap 4 composed of a top plate 5 and a circumferential wall 6, and a rail body 1 having an end part 2 in which the circumferential wall 6 of the end cap 4 is inserted and placed, wherein an inner circumference of the end part 2 of the rail body 1 has a depression 3, the circumferential wall 6 is placed in the depression 3, and there is no level difference at a boundary part 12 between an inner circumferential surface 11 of the circumferential wall 6 and an inner circumferential surface 10 of the rail body 1.

公开(公告)号：US20190203686A1

公开(公告)日：2019-07-04

申请号：US16325704

申请日：2017-06-26

申请人： USUI CO., LTD.

发明人： Shuji SUZUKI

IPC分类号： F02M63/02 ,  F02M55/02

CPC分类号： F02M63/0275 ,  F02M55/02 ,  F02M55/025 ,  F02M2200/315

摘要： To obtain a gasoline direct injection rail provided with an inlet capable of reducing pressure pulsation without increasing the inner diameter of a high-pressure pipe even when the pressure of a system is increased. A gasoline direct injection rail comprises an inlet 2, 21 at a first end 15, 34 of a rail body 1, 20, wherein an orifice 12, 31 is provided inside the rail body 1, 20, the inlet 2, 21 has a fuel flow passage 4, 23, and a hollow part 8, 27 is provided between the fuel flow passage 4, 23 and the orifice 12, 31.

公开(公告)号：US20170292484A1

公开(公告)日：2017-10-12

申请号：US15513992

申请日：2015-07-27

申请人： USUI CO., LTD.

发明人： Hiroyuki NISHIZAWA ,  Shuji SUZUKI

IPC分类号： F02M55/02 ,  F02M55/04

CPC分类号： F02M55/02 ,  F02M55/025 ,  F02M55/04 ,  F02M69/465 ,  F02M2200/03 ,  F02M2200/315 ,  F02M2200/8084 ,  F02M2200/9015

摘要： To improve the ability to layout delivery pipes by maintaining flexibility in a mounting position of an inlet pipe to a delivery pipe main body. A delivery pipe for gasoline comprising a flat shaped delivery pipe main body 1 provided with a pair of facing wide walls 2, 3 and a pair of facing narrow walls 4, 5 that are more narrow than the pair of wide walls 2, 3, wherein an inlet pipe 7 is disposed and connected to the narrow wall 4 of the delivery pipe main body 1, and a connecting portion 10 of the inlet pipe 7 and the narrow wall 4 is covered continuously by a reinforcing material 11 from the connecting portion 10 over the wide walls 2, 3, thereby reinforcing the connection portion 10.