公开(公告)号：US20200095966A1

公开(公告)日：2020-03-26

申请号：US16695070

申请日：2019-11-25

Applicant: DENSO CORPORATION

Inventor： Hiroshi INOUE

IPC: F02M59/46 ,  F02M37/16 ,  F02M37/00 ,  F02M37/04 ,  F02M59/02 ,  F04B7/00 ,  F04B53/10

Abstract: A high-pressure pump has a metering valve and a valve stopper. The stopper has a regulation portion which an end surface of the valve is brought into contact with. An outer diameter of the regulation portion is equal to an outer diameter of the outer peripheral surface of the valve. A cylindrical sleeve is disposed around the regulation portion. When the end surface of the valve is in contact with the regulation portion, the sleeve covers a tapered surface of the valve.

公开(公告)号：US20180171951A1

公开(公告)日：2018-06-21

申请号：US15900205

申请日：2018-02-20

Applicant: DENSO CORPORATION

Inventor： Hiroshi INOUE

IPC: F02M59/46 ,  F04B53/10 ,  F04B7/00 ,  F02M59/02 ,  F02M37/16 ,  F02M37/04 ,  F02M37/00

CPC classification number: F02M59/466 ,  F02M37/00 ,  F02M37/0023 ,  F02M37/04 ,  F02M37/16 ,  F02M59/025 ,  F04B7/0053 ,  F04B7/0076 ,  F04B53/1087 ,  Y10T137/7837

Abstract: A high-pressure pump has a metering valve and a valve stopper. The stopper has a regulation portion which an end surface of the valve is brought into contact with. An outer diameter of the regulation portion is equal to an outer diameter of the outer peripheral surface of the valve. A cylindrical sleeve is disposed around the regulation portion. When the end surface of the valve is in contact with the regulation portion, the sleeve covers a tapered surface of the valve.

公开(公告)号：US20150260296A1

公开(公告)日：2015-09-17

申请号：US14725492

申请日：2015-05-29

Applicant: DENSO CORPORATION

Inventor： Masatoshi KUROYANAGI ,  Hiroshi INOUE ,  Shinichiro KOSHIMOTO

IPC: F16K1/32 ,  F16K31/44

CPC classification number: F04B53/1087 ,  F02M59/02 ,  F02M59/368 ,  F02M59/46 ,  F02M59/466 ,  F02M63/0035 ,  F02M63/0075 ,  F02M63/0077 ,  F02M63/0078 ,  F04B7/0076 ,  F04B19/22 ,  F04B53/103 ,  F04B53/1032 ,  F04B53/14 ,  F04B53/16 ,  F16K1/32 ,  F16K1/42 ,  F16K1/50 ,  F16K1/54 ,  F16K31/0655 ,  F16K31/44

Abstract: A valve seat has an inner passage and outer passages. A suction valve member has first passages and a first projection portion that guides, to the first passages, the fuel that flows from a pressure chamber at the time of valve opening. Therefore, an action force by the dynamic pressure applied to the suction valve member in the valve closing direction is reduced. An action force by the pressure of fuel that flows into pressure equalization grooves counterbalances the action force by the dynamic pressure of the suction valve member. Therefore, self-closing by the dynamic pressure can be inhibited, and the maximum output of an electromagnetic driving unit can be reduced. Fuel flow through a passage radially outside the suction valve member and the first passages. A fluid passage area is securable even when a lift amount of the suction valve member is small.

Abstract translation: 阀座具有内通道和外通道。 抽吸阀构件具有第一通道和第一突出部分，其在阀打开时将从压力室流动的燃料引导到第一通道。 因此，通过在关闭方向施加到吸入阀构件的动压力的作用力减小。 通过流入压力平衡槽的燃料的压力的作用力通过吸入阀构件的动压抵消作用力。 因此，能够抑制动压下的自闭，能够降低电磁驱动部的最大输出。 燃料流过通过吸入阀构件和第一通道径向外侧的通道。 即使当吸入阀构件的提升量小时，流体通道区域也是可固定的。