公开(公告)号：US10808665B2

公开(公告)日：2020-10-20

申请号：US16641393

申请日：2018-07-27

Applicant: Robert Bosch GmbH

Inventor： Michael Imhof ,  Robert Mayer

IPC: F02M59/10 ,  F04B9/04 ,  F02M59/06 ,  F02M59/44 ,  F04B1/0413 ,  F16H53/02

Abstract: A camshaft (24), in particular for a pump (10), is proposed. The camshaft (24) has at least two cams (26, 28) which are arranged next to one another in the direction of the longitudinal axis (25) of the camshaft (24) and the cam elevations of which are arranged offset with respect to one another around the longitudinal axis (25) of the camshaft (24). An intermediate region (30) is provided between two adjacent cams (26, 28), and at least one bearing region (32) is arranged next to the cams (26, 28) in the direction of the longitudinal axis (25) of the camshaft (24). The intermediate region (30) runs in axial longitudinal sections which contain the longitudinal axis (25) of the camshaft (24), at a radial spacing (r1, r2) from the longitudinal axis (25) of the camshaft (24), which radial spacing (r1, r2), starting from the adjacent cam (26) with the smaller cam elevation (h1) in the respective axial longitudinal section, increases towards the adjacent cam (28) with the greater cam elevation (h2) in the respective axial longitudinal section.

公开(公告)号：US10352283B2

公开(公告)日：2019-07-16

申请号：US14903865

申请日：2014-07-08

Applicant: Robert Bosch GmbH

Inventor： Manuel Tavani ,  Rocco Guarino ,  Fabio Damiani

IPC: F02M59/46 ,  F02M59/06 ,  F02M59/10 ,  F02M59/44 ,  F04B1/04 ,  F04B53/10

Abstract: Internal combustion engine fuel, preferably diesel fuel, feed pump assembly, the pump assembly (1) comprising a pump body (2); at least one cylinder (6) formed in the pump body (2) and extending along an axis (A2); a seat (12) formed in the pump body (2), at one end of the cylinder (6); an intake valve (18) for selectively controlling fuel feed into the cylinder (6), which is housed inside the seat (12) and in turn comprises a valve body (25); and an annular seal (26) extending around the axis (A2) and fitted inside the seat (12) between the valve body (25) and the pump body (2); the pump assembly (1) being characterized in that the valve body (25) is positioned contacting the annular seal (26) along a contact surface (45) of the valve body (25) and close to a surface portion adjacent to a radially inner peripheral edge (46) of the seal (26); the valve body (25) having an annular step (48) along another surface portion adjacent to a radially outer peripheral edge (52) of the seal (26).

公开(公告)号：US10024286B2

公开(公告)日：2018-07-17

申请号：US15200092

申请日：2016-07-01

Applicant: GT Technologies

Inventor： John E. Brune ,  Scott P. Smith

IPC: F01L1/14 ,  F02M59/10 ,  F02M59/06 ,  F04B1/04 ,  F01L1/08 ,  F02M39/02 ,  F01L1/047

CPC classification number: F02M59/102 ,  F01L1/047 ,  F01L1/08 ,  F01L2107/00 ,  F02M39/02 ,  F02M59/06 ,  F02M2200/50 ,  F02M2200/852 ,  F04B1/0426

Abstract: A tappet assembly for use in translating force between a camshaft lobe and a fuel pump assembly via reciprocal movement within a tappet cylinder having a guide slot. The tappet assembly includes a bearing assembly having a shaft and a bearing rotatably supported by the shaft for engaging the lobe. An intermediate element has a first aperture, a shelf for engaging the fuel pump assembly, and a pair of arc-shaped bearing surfaces rotatably engaging the shaft when the bearing engages the lobe and the shelf engages the fuel pump assembly. An annular body has a second aperture and at least one stop member abutting the intermediate element to align the first aperture with the second aperture. An anti-rotation clip is disposed so as to extend through the apertures and cooperates with the stop member to substantially prevent rotational and axial movement of the intermediate element with respect to the body.

公开(公告)号：US09109558B2

公开(公告)日：2015-08-18

申请号：US13353555

申请日：2012-01-19

Applicant: Masashi Suzuki

Inventor： Masashi Suzuki

IPC: F02M37/04 ,  F02M59/06 ,  F02M59/10 ,  F02M59/38 ,  F02M59/44

CPC classification number: F02M59/06 ,  F02M59/102 ,  F02M59/38 ,  F02M59/44 ,  F02M2200/18

Abstract: First and second recessed portions are respectively formed on first and second wall surfaces of a cam chamber, in order that a plunger head and a coil spring would not come in touch with the first and second wall surfaces even in such a virtual situation. In the virtual situation, it is supposed that the plunger head would be separated from a plunger, the plunger head remains in contact with a contact surface of a cam ring so that the plunger head would not move relative to the contact surface, and a cam member would be continuously rotated.

Abstract translation: 第一和第二凹部分别形成在凸轮室的第一和第二壁表面上，以便即使在这种虚拟情况下，柱塞头和螺旋弹簧也不会与第一和第二壁表面接触。 在虚拟情况下，假设柱塞头与柱塞分离，柱塞头与凸轮环的接触表面保持接触，使得柱塞头相对于接触表面不会移动，并且凸轮 会员连续旋转。

公开(公告)号：US20090126695A1

公开(公告)日：2009-05-21

申请号：US12296773

申请日：2007-04-10

Applicant: Ngoc-Tam Vu

Inventor： Ngoc-Tam Vu

IPC: F02M59/06 ,  F02M59/46 ,  F04B1/04 ,  F04B19/00

CPC classification number: F02M59/06 ,  F02M59/464 ,  F02M2200/50 ,  F04B1/0452 ,  F04B53/102

Abstract: A radial piston pump for supplying fuel at high-pressure to an internal combustion engine has a compression chamber arranged in a displacement housing, a reciprocating piston arranged in a cylinder chamber, a suction valve connected to a fuel supply line and has a spring-loaded closure body, an intermediate piece, a threaded pin and a pressure valve which is connected to a fuel outlet line. The closing body of the suction valve is embodied as a valve end pad with the spring exerting a force on the front end thereof. The valve end pad has a closure collar and at least two channels that are distributed around the periphery and which adjoin the closure collar and a base plate. A stop plate comprising an additional base plate borders the closure collar of the valve end pad as an intermediate piece to which the threaded pin is connected.

Abstract translation: 用于向内燃机供给高压燃料的径向活塞泵具有设置在排气容器中的压缩室，配置在气缸室中的往复活塞，与燃料供给管连接的吸入阀，具有弹簧加载 封闭体，中间件，螺纹销和连接到燃料出口管线的压力阀。 吸入阀的封闭体被实施为具有弹簧的阀端垫，弹簧在其前端施加力。 阀端垫具有封闭环和至少两个分布在周边周围并且与封闭环和基板邻接的通道。 包括附加基板的止动板与阀端垫的封闭环接合，作为连接螺纹销的中间件。

公开(公告)号：US07513190B2

公开(公告)日：2009-04-07

申请号：US11579258

申请日：2005-03-01

Applicant: Peter Boehland ,  Godehard Nentwig

Inventor： Peter Boehland ,  Godehard Nentwig

IPC: F02M59/06 ,  F04B1/04

CPC classification number: F02M59/44 ,  F02M59/102 ,  F02M2200/02 ,  F04B1/0404 ,  F04B1/0408

Abstract: A high-pressure pump having a rotationally driven drive shaft and at least one pump element which has a pump piston driven at least indirectly in a reciprocating motion by the drive shaft which piston is guided in a cylinder bore and with its end remote from the drive shaft defines a pump work chamber. The pump piston is braced at least indirectly on the drive shaft. Extending through the pump piston is at least one line which discharges at the circumference of the pump piston in the cylinder bore spaced apart from the end of the pump piston that defines the pump work chamber and which leads toward the drive shaft to the region where the pump piston is braced.

Abstract translation: 具有旋转驱动的驱动轴和至少一个泵元件的高压泵，其具有至少间接地由驱动轴往复运动地驱动的泵活塞，该活塞在气缸孔中被引导并且其端部远离驱动器 轴定义了泵工作室。 泵活塞至少间接地支撑在驱动轴上。 通过泵活塞延伸的是至少一条排放在泵活塞的圆周处的气缸孔中，其与限定泵工作室的泵活塞的端部间隔开并且朝着驱动轴通向到 泵活塞支撑。

公开(公告)号：US20050265867A1

公开(公告)日：2005-12-01

申请号：US10857313

申请日：2004-05-28

Applicant: Ilija Djordjevic

Inventor： Ilija Djordjevic

IPC: F02M39/02 ,  F02M59/06 ,  F02M59/10 ,  F04B1/053 ,  F04B7/06 ,  F04B23/04

CPC classification number: F02M59/102 ,  F04B1/053

Abstract: An hydraulic head features two or three individual radial pumping pistons and associated pumping chambers, annularly spaced around a cavity in the head where an eccentric drive member with associated outer rolling actuation ring are situated, whereby a rolling interaction is provided between the actuating ring and the inner ends of the pistons for intermittent actuation, and a sliding interaction is provided between the actuation ring and the drive member. The respective inlet and outlet valve trains are also situated in the head, and the head is attachable to an application and/or customer specific mounting plate. The outside diameter of the rolling element is barrel shaped, to compensate for any misalignment of the pistons relative to the drive shaft due, for example, to either tolerance stack up or deflection.

Abstract translation: 液压头具有两个或三个单独的径向泵送活塞和相关联的泵送室，其围绕头部中的空腔环形间隔开，其中定位有相关联的外滚动致动环的偏心驱动构件，由此在致动环和 用于间歇致动的活塞的内端，并且在致动环和驱动构件之间提供滑动相互作用。 相应的入口和出口阀门也位于头部中，并且头部可附接到应用和/或客户特定的安装板。 滚动元件的外径是桶形的，以补偿活塞相对于驱动轴的任何不对准，例如由于公差叠加或偏转。

公开(公告)号：US20050100448A1

公开(公告)日：2005-05-12

申请号：US11015573

申请日：2004-12-17

Applicant: Ludmilla Graf ,  Uwe Nigrin ,  Johann Schneider ,  Ngoc-Tam Vu

Inventor： Ludmilla Graf ,  Uwe Nigrin ,  Johann Schneider ,  Ngoc-Tam Vu

IPC: F02M39/00 ,  F02M59/06 ,  F02M59/10 ,  F02M59/44 ,  F04B1/04 ,  F04B23/10 ,  F04B53/16 ,  F04B23/12 ,  F04B3/00

CPC classification number: F02M39/005 ,  F02M59/06 ,  F02M59/102 ,  F02M59/445 ,  F04B1/0404 ,  F04B23/103 ,  F04B53/16 ,  F05C2201/0442

Abstract: The invention relates to a radial piston pump unit for a high pressure injection system with a pump housing in which a driveshaft with an eccentric section is mounted. A reciprocating ring sits on the above section and drives at least one spring-loaded piston which may be displaced in a direction radial to the drive axis. The driveshaft is embodied to comprise an end region which as a floating mounting and is also the drive for a fuel supply pump.

Abstract translation: 本发明涉及一种用于高压注射系统的径向活塞泵单元，其具有泵壳体，其中安装有具有偏心部分的驱动轴。 往复式环位于上述部分上，并驱动至少一个弹簧加载的活塞，其可沿径向于驱动轴线的方向移位。 驱动轴被实施为包括作为浮动安装件并且也是用于燃料供应泵的驱动器的端部区域。

公开(公告)号：US6126407A

公开(公告)日：2000-10-03

申请号：US284773

申请日：1999-05-28

Applicant: Josef Guentert ,  Bernd Streicher ,  Uwe Kuhn ,  Juergen Hammer ,  Thomas Lettner

Inventor： Josef Guentert ,  Bernd Streicher ,  Uwe Kuhn ,  Juergen Hammer ,  Thomas Lettner

IPC: F02M37/06 ,  F02M39/00 ,  F02M59/06 ,  F02M59/44 ,  F04B23/10 ,  H05B1/00 ,  H05B3/02

CPC classification number: F04B23/103 ,  F02M39/005

Abstract: The invention relates to a pump device for high-pressure fuel delivery in fuel injection systems of internal combustion engines, in particular in a common rail injection system, including a radial piston pump (2, 68, 80) with a drive shaft (38, 74, 114) that is supported in a pump housing (14) and is embodied eccentrically or has cam-like projections in the circumference direction, preferably with a number of pistons that are each disposed in a cylinder chamber radially in relation to the drive shaft and can be driven to reciprocate in the cylinder chamber when the drive shaft rotates, and with a check valve on the intake side and the high pressure side, and a low pressure pump (4, 71, 82) connected before the radial piston pump; in order to improve the pump device in such a way that it is more compact and can be produced more cheaply and the danger of the occurrence of leaks is reduced, the low pressure pump (4, 71, 82) is provided on or in the pump housing (14) of the radial piston pump (2, 68, 80), on the end remote from the drive end (10), and can be driven by the drive shaft (38, 74, 114) of the radial piston pump. (FIG. 1b)

Abstract translation: PCT No.PCT / DE98 / 01919 Sec。 371日期1999年5月28日 102（e）日期1999年5月28日PCT提交1998年7月9日PCT公布。 公开号WO99 /​​ 09316 日期1999年2月25日本发明涉及一种用于内燃机的燃料喷射系统中的高压燃料输送的泵装置，特别是在共轨喷射系统中，包括径向活塞泵（2,88,80），其具有 驱动轴（38,74,114），其被支撑在泵壳体（14）中，并且在圆周方向上偏心地设置或具有凸轮状突起，优选地，多个活塞各自以径向位于气缸室中 与驱动轴相关联，并且可以在驱动轴旋转时被驱动以在气缸室中往复运动，并且在进气侧和高压侧具有止回阀，并且在低压泵（4,71,82）之前连接的低压泵 径向活塞泵; 为了改善泵装置，使得其更紧凑并且可以更便宜地生产并且泄漏发生的危险降低，低压泵（4,71,82）设置在或 径向柱塞泵（2,68,80）的泵壳体（14）在远离驱动端（10）的一端上，并且可以由径向柱塞泵（38,64）的驱动轴（38,74,114）驱动 。 （图1b）

公开(公告)号：US6027312A

公开(公告)日：2000-02-22

申请号：US959836

申请日：1997-10-29

Applicant: Ilija Djordjevic

Inventor： Ilija Djordjevic

IPC: F02M39/00 ,  F02M41/14 ,  F02M59/06 ,  F02M59/10 ,  F02M59/16 ,  F02M59/20 ,  F02M59/46 ,  F02M63/02 ,  F04B1/00 ,  F04B1/04 ,  F04B1/34 ,  F04B19/02

CPC classification number: F04B1/0452 ,  F02M39/005 ,  F02M41/1405 ,  F02M59/06 ,  F02M59/102 ,  F02M59/16 ,  F02M59/205 ,  F02M59/462 ,  F02M63/0225 ,  F04B1/0404 ,  F04B1/0413

Abstract: A pump and associated method including the steps of pre-metering successive quantities of fuel from a reservoir to a positive displacement transfer pump, then actuating the transfer pump to raise the pressure of the successive quantities of fuel by at least about 100 psi, preferably 200-300 psi. Each quantity of fuel which was pressurized in the transfer pump, is delivered to a high pressure pumping chamber so that each pumping bore receives a certain, i.e., predetermined, charge of fuel within a first time interval. A plurality of plungers in the respective pumping bores are then simultaneously actuated to increase the pressure in the pumping chamber to the desired high pressure, preferably at least about 15,000 psi, within a second time interval, and to discharge the quantity of fuel through a high pressure discharge valve. The second time interval is of longer duration than the first time interval. As a result, the necessary quantity of fuel can be delivered to the pumping chamber in a relatively short time period. Therefore, each pumping plunger can be actuated by a dual rate cam profile over a relatively long time period such that at steady state the actuation occurs only along a relatively shallow slope of the cam profile, whereas when acceleration is required, the actuation can occur more quickly, along a steeper profile, before continuing along the relatively shallow profile.

Abstract translation: 一种泵和相关方法，包括以下步骤：将来自储存器的连续量的燃料预先计量到正排量输送泵，然后致动所述输送泵以将连续量的燃料的压力提高至少约100psi，优选为200 -300psi。 在输送泵中被加压的每一量的燃料被输送到高压泵送室，使得每个泵送孔在第一时间间隔内接收一定的即预定的燃料。 然后在相应的泵送孔中的多个柱塞被同时致动，以在第二时间间隔内将泵送室中的压力增加到期望的高压，优选至少约15,000psi，并且通过高的排出量排出燃料 压力放电阀。 第二时间间隔比第一时间间隔更长的持续时间。 因此，必要量的燃料可以在较短时间内被输送到泵送室。 因此，每个泵送柱塞可以在相对长的时间周期内通过双速率凸轮轮廓来致动，使得在稳定状态下，致动仅沿着凸轮轮廓的相对较浅的斜面发生，而当需要加速时，致动可以发生更多 迅速地，沿着更陡峭的轮廓，然后继续沿着相对较浅的轮廓。