公开(公告)号：US20180073477A1

公开(公告)日：2018-03-15

申请号：US15817698

申请日：2017-11-20

申请人： Robert Bosch GmbH

发明人： Michael Kleindl ,  Tamim Latif ,  Peter Ropertz ,  Matthias Maess

IPC分类号： F02M59/46 ,  F02M59/02 ,  F04B1/00 ,  F04B53/14 ,  F04B53/10 ,  F04B19/22 ,  F04B53/16

CPC分类号： F02M59/462 ,  F04B1/00 ,  F04B53/10 ,  F04B53/1007 ,  F04B53/101 ,  F04B53/1022 ,  F04B53/1025 ,  F04B53/1027 ,  F04B53/1035 ,  F04B53/1045 ,  F04B53/1047 ,  F04B53/106 ,  F04B53/107 ,  F04B53/1085 ,  F04B53/1087 ,  F04B53/16

摘要： A piston-type fuel pump for an internal combustion engine includes a pump housing, a piston, an annular counterplate, and a non-return outlet valve. The pump housing includes a stepped opening and a piston opening. The piston is guided in the piston opening. The counterplate is pressed into the stepped opening and includes a valve seat. The non-return valve includes a valve element and a guide element. The guide element guides the valve element, is arranged radially outside the valve element and in the stepped opening, and includes a guide section, a retention section, and a support section. The guide section guides the valve element, the retention section is connected to the guide section via a radially extending connecting section, and the support section supports a valve spring. The sections are arranged axially at different points such that the guide section is between the counterplate and the support section.

公开(公告)号：US20180010562A1

公开(公告)日：2018-01-11

申请号：US15544039

申请日：2016-01-13

申请人： DENSO CORPORATION

发明人： Shinobu OIKAWA ,  Masaharu NAKAOKA

IPC分类号： F02M59/36 ,  F02M59/48 ,  F02M59/44 ,  F02M59/10 ,  F04B1/04 ,  F02M59/46

CPC分类号： F02M59/365 ,  F02M59/102 ,  F02M59/22 ,  F02M59/36 ,  F02M59/366 ,  F02M59/44 ,  F02M59/442 ,  F02M59/447 ,  F02M59/466 ,  F02M59/48 ,  F04B1/0456

摘要： A plunger of a high-pressure pump is provided reciprocatably on an inner side of a cylinder. A holder disposed on an opposite side of the cylinder from a pressurizing chamber includes a large tubular portion that provides a predetermined space between the large tubular portion and an outer wall of the plunger, and a small tubular portion that is disposed on an opposite side of the large tubular portion from the cylinder. A pin inserted into a hole of the plunger at a position corresponding to the large tubular portion protrudes radially outward from the outer wall of the plunger and is accommodated in a space on an inner side of the large tubular portion.

公开(公告)号：US09856835B1

公开(公告)日：2018-01-02

申请号：US15201381

申请日：2016-07-01

申请人： Caterpillar Inc.

发明人： Dana Coldren ,  Glenn Cox ,  David Ginter ,  Alan Stockner ,  Martin Willi

IPC分类号： F02M37/00 ,  F02M21/02 ,  F02D41/30 ,  F02M39/00 ,  F02F1/00 ,  F02F3/00 ,  F02M39/02 ,  F02M59/46 ,  F02M69/04 ,  F02B17/00 ,  F02B19/10

CPC分类号： F02M37/0064 ,  F02B17/005 ,  F02B19/108 ,  F02B19/12 ,  F02D19/061 ,  F02D19/0647 ,  F02D19/0665 ,  F02D19/0681 ,  F02D19/0689 ,  F02D19/0692 ,  F02D19/10 ,  F02D41/0025 ,  F02D41/0027 ,  F02D41/30 ,  F02D41/3041 ,  F02D41/3094 ,  F02F1/00 ,  F02F3/00 ,  F02M21/0218 ,  F02M21/0245 ,  F02M21/0284 ,  F02M21/0287 ,  F02M37/0076 ,  F02M39/005 ,  F02M39/02 ,  F02M57/06 ,  F02M59/464 ,  F02M69/046 ,  Y02T10/125 ,  Y02T10/32

摘要： A fuel supply system for a reciprocating-piston engine includes a storage tank; a wall of the storage tank defining a first aperture and a second aperture therethrough; a first fuel injector fluidly coupled with the first aperture of the storage tank via a pressure control module and a first fuel injector supply conduit; a pump fluidly coupled with the second aperture of the storage tank; and a second fuel injector fluidly coupled with an outlet port of the pump via a second fuel injector supply conduit. The pressure control module is configured to maintain a pressure in the first fuel injector supply conduit within a pressure range that includes a pressure value that is less than a pressure inside the storage tank. The pump is configured to maintain a pressure inside the second fuel injector supply conduit that is greater than the pressure inside the first fuel injector supply conduit.

公开(公告)号：US09850892B2

公开(公告)日：2017-12-26

申请号：US15349148

申请日：2016-11-11

申请人： DENSO CORPORATION

发明人： Masatoshi Kuroyanagi ,  Hiroshi Inoue ,  Shinichiro Koshimoto

IPC分类号： F16K1/32 ,  F04B53/10 ,  F02M59/46 ,  F02M63/00 ,  F02M59/36 ,  F16K31/44 ,  F02M59/02 ,  F04B19/22 ,  F04B53/14 ,  F04B53/16 ,  F16K1/42 ,  F16K1/50 ,  F16K1/54 ,  F16K31/06

CPC分类号： 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

摘要： 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 firs passages. A fluid passage area is securable even when a lift amount of the suction valve member is small.

公开(公告)号：US20170298883A1

公开(公告)日：2017-10-19

申请号：US15097644

申请日：2016-04-13

申请人： GM GLOBAL TECHNOLOGY OPERATIONS LLC

发明人： Azeem Sarwar ,  Chaitanya Sankavaram ,  Rafat Hattar ,  Matthew Hamilton ,  Jonathan Pung

IPC分类号： F02M59/46 ,  F02D41/38

CPC分类号： F02M59/368 ,  F02D41/1401 ,  F02D41/3845 ,  F02D2041/1412 ,  F02D2041/1422 ,  F02D2041/224 ,  F02D2041/228 ,  F02M59/366 ,  F02M59/367 ,  F02M59/464 ,  F02M59/466

摘要： An engine fuel delivery system includes a fuel pump having a pumping chamber to increase fuel pressure and a closeable inlet valve, and a fuel rail to communicate pressurized fuel received from the fuel pump to at least one engine cylinder. The engine fuel delivery system also includes a controller programmed to issue a control signal to periodically close the inlet valve to generate a setpoint fuel pressure within the pumping chamber. The controller is also programmed to adjust a control signal gain value in response to deviation in an outlet fuel pressure relative to the setpoint fuel pressure. The controller is further programmed to issue a warning message in response to the control signal gain being adjusted by more than a predetermined threshold from a calibrated gain value.

公开(公告)号：US20170292468A1

公开(公告)日：2017-10-12

申请号：US15481128

申请日：2017-04-06

申请人： MOTONIC CORPORATION

发明人： Sang Ryul LEE ,  Wan Jae JEON ,  Jun Hyeok LEE ,  Hyung Soo KIM ,  Hae Jin KIM ,  Kyu Sung CHOI ,  Yeong Dong PARK

IPC分类号： F02D41/30 ,  F02M59/10 ,  F02M65/00 ,  F02M59/46

CPC分类号： F02D41/3005 ,  F02D41/20 ,  F02D41/3845 ,  F02D2041/2003 ,  F02D2041/2027 ,  F02D2041/2037 ,  F02D2200/0602 ,  F02D2200/101 ,  F02M59/102 ,  F02M59/366 ,  F02M59/466 ,  F02M65/003

摘要： An apparatus and a method for controlling a flow control valve for a high-pressure fuel pump include: a pressure sensor for fuel in a delivery pipe; a control unit for controlling an operation of a flow control valve by controlling a current applied to a coil; a power switching unit for supplying or blocking driving power supplied to the flow control valve based on a control signal of the control unit; and a current adjustment unit electrically connected/disconnected with the flow control valve by the power switching unit to reduce a current supplied to the flow control valve when the current adjustment unit is connected with the flow control valve. Therefore, a noise and a vibration by collision between the plunger and the core upon closing the flow control valve may be attenuated by adjusting a current amount applied to the coil.

公开(公告)号：US09771928B2

公开(公告)日：2017-09-26

申请号：US14284823

申请日：2014-05-22

申请人： DENSO CORPORATION

发明人： Takehiko Kato ,  Shinichiro Koshimoto ,  Osamu Hishinuma ,  Yutaka Miyamoto

IPC分类号： F04B53/10 ,  F16K1/32 ,  F02M59/46 ,  F04B1/04 ,  F02M63/00

CPC分类号： F04B53/1085 ,  F02M59/025 ,  F02M59/466 ,  F02M63/0075 ,  F02M63/0077 ,  F02M63/0078 ,  F04B1/0452 ,  F04B19/04 ,  F04B19/22 ,  F04B53/1087 ,  F04B53/14 ,  F04B53/16 ,  F16K1/32

摘要： A valve seat member which partitions between a supply passage and a pressurizing chamber, includes an inner flow path, which communicates between the supply passage and the pressurizing chamber, and an outer flow path, which is placed on a radially outer side of the inner flow path. An inner valve is seatable against inner valve seat formed in an opening of the inner flow path. An outer valve is contactable with an end surface of the inner valve, which is opposite from the inner valve seat. The outer valve is seatable against an outer valve seat, which is formed in an opening of the outer flow path.

公开(公告)号：US09771912B2

公开(公告)日：2017-09-26

申请号：US14124764

申请日：2012-04-25

申请人： Marco Vorbach

发明人： Marco Vorbach

IPC分类号： F02M59/46 ,  F02M69/04 ,  F02M61/00 ,  F02M57/04 ,  F02M61/06 ,  F02M61/18

CPC分类号： F02M69/04 ,  F02M61/06 ,  F02M61/1806 ,  F02M61/188 ,  F02M61/1886 ,  F02M61/1893 ,  F02M2200/06

摘要： A fuel injector for internal combustion engines is provided, which has a valve seat member, bordering a valve chamber, having a valve seat and spray orifices and a central blind-end bore as well as a valve member that is able to be driven to cause a lift motion having a closing head, which, together with a valve seat, forms a sealing seat lying upstream of the spray orifices. In order to prevent an underpressure developing in the blind-end bore in the closing phase of the sealing seat, and a partial return flow of the fuel connected with it, the closing head of the valve member is provided, at its end face facing towards the valve seat member, with a plunger sticking out from closing head, which has a shape adjusted to the contour of the blind-end bore, and dips into the blind-end bore when the sealing seat is closed.

公开(公告)号：US09771910B2

公开(公告)日：2017-09-26

申请号：US14750232

申请日：2015-06-25

申请人： Ford Global Technologies, LLC

发明人： Ross Dykstra Pursifull ,  Gopichandra Surnilla ,  Joseph F. Basmaji ,  Mark Meinhart ,  Hao Zhang

IPC分类号： F02D41/38 ,  F02M59/46 ,  F02M55/02 ,  F02D41/24 ,  F02D41/30

CPC分类号： F02M59/466 ,  F02D41/3082 ,  F02D41/3094 ,  F02D41/3854 ,  F02D41/3863 ,  F02D2041/3881 ,  F02D2041/389 ,  F02M55/025 ,  F02M59/366 ,  F02M59/464 ,  F02M63/029

摘要： Methods and systems are provided for delivering fuel to a port injector fuel rail in a port fuel direct injection (PFDI) engine. In one example, the port injector fuel rail may receive fuel from each of a compression chamber and a step chamber of a direct injection fuel pump coupled in the PFDI engine. In this way, pressurized fuel may be supplied to the port injector fuel rail during an entire cycle of the direct injection fuel pump.

公开(公告)号：US09759174B2

公开(公告)日：2017-09-12

申请号：US14433407

申请日：2013-07-10

申请人： Stanadyne Corporation

发明人： Robert G. Lucas ,  Yevgeniy Norkin

IPC分类号： F02M59/00 ,  F02M63/02 ,  F02M63/00 ,  F02M59/46

CPC分类号： F02M63/0265 ,  F02M59/46 ,  F02M59/464 ,  F02M63/005 ,  F02M63/0056

摘要： The pump delivered pressure is regulated to a substantially constant set value, and output flow is varied by an inlet metering valve (5) via feedback from the motion of, or flow from the spilled fuel through, a delivered pressure regulator (13, 19). The pressure regulating element can be biased to close a seal surface (12′) against flow from the outlet side of the pump (14) toward the inlet metering valve when the pump is turned off, thereby holding sufficient rail pressure to prevent boiling during hot soak conditions. In another aspect, a flow stabilization orifice (18) is provided between the outlet of the pump and the inlet metering valve, e.g., upstream of the pressure regulating element. In yet a further aspect, the inlet metering valve is hydraulically responsive (6, S, L) to changes in flow resulting from movement of the pressure responsive element (13).