公开(公告)号：WO2017156552A1

公开(公告)日：2017-09-14

申请号：PCT/US2017/022735

申请日：2017-03-16

Applicant: STANADYNE LLC

Inventor： LUCAS, Robert, G.

IPC: F02M51/04 ,  F02M59/20 ,  F02M61/04 ,  F02M63/04

Abstract: An inlet valve assembly for a fuel pump comprises a valve assembly inflow path and valve assembly outflow path; a magnetic valve member situated in an intermediate flow path fluidly linking the inflow path and the outflow path; a magnetic pole adjacent the valve member; and a selectively energizable coil for generating a magnetic flux directly magnetically coupling the pole and the valve member; whereby the valve member opens and closes fluid communication between the inflow path and the outflow path in response to the energized state of the coil.

Abstract translation: 用于燃料泵的入口阀组件包括阀组件流入路径和阀组件流出路径; 位于将流入路径和流出路径流体连接的中间流动路径中的磁阀构件; 邻近阀构件的磁极; 以及可选择性激励的线圈，用于产生直接磁耦合所述极和所述阀构件的磁通量; 由此阀件响应于线圈的通电状态打开和关闭流入路径与流出路径之间的流体连通。

公开(公告)号：WO2017053223A1

公开(公告)日：2017-03-30

申请号：PCT/US2016/052455

申请日：2016-09-19

Applicant: STANADYNE LLC

Inventor： LUCAS, Robert, G.

IPC: F02M37/06

CPC classification number: F02M59/44 ,  F02M59/025 ,  F02M59/102 ,  F04B1/0408 ,  F04B1/0417 ,  F04B1/0426 ,  F04B9/042 ,  F04B53/14 ,  F04B53/16

Abstract: In a tappet-driven single piston pump, piston side loads caused by return spring out-of- squareness are eliminated by effectively piloting the piston return spring, preferably the associated spring seat, by the tappet, thereby allowing the tappet to bear the spring side load. The piston engages and is returned by the spring seat, but radial clearance between the piston and spring seat is greater than radial clearance between the spring seat and tappet, thus eliminating side loading imparted to the piston. The spring seat can be considered a piston retainer, in which the piston is not closely attached to the retainer but instead exhibits a predefined radial clearance greater than the piloting clearance between the retainer and the tappet.

Abstract translation: 在挺杆驱动的单活塞泵中，通过由推杆有效地将活塞复位弹簧（优选地相关联的弹簧座）有效地引导，由回位弹簧不正直引起的活塞侧负载被消除，从而允许挺杆承受弹簧侧 加载。 活塞接合并由弹簧座返回，但是活塞和弹簧座之间的径向间隙大于弹簧座和挺杆之间的径向间隙，从而消除了赋予活塞的侧向载荷。 弹簧座可以被认为是活塞保持器，其中活塞不紧密地附接到保持器，而是表现出比保持器和挺杆之间的引导间隙大的预定的径向间隙。

公开(公告)号：WO2022031820A1

公开(公告)日：2022-02-10

申请号：PCT/US2021/044504

申请日：2021-08-04

Applicant: STANADYNE LLC

Inventor： LUCAS, Robert, G. ,  HORNBY, Michael ,  GUNTURU, Srinu

IPC: F02M59/36 ,  F02M37/00 ,  F02M63/02 ,  F02M59/48 ,  F02M55/02 ,  F02M69/46 ,  F02M37/0041 ,  F02M55/025 ,  F02M59/366 ,  F02M59/485 ,  F02M63/0285 ,  F02M69/465

Abstract: A high-pressure fuel supply pump for a fuel system that supplies a high-pressure fuel injection (GDI) apparatus and a low-pressure fuel injection (PFI) apparatus incorporates an inlet check valve to isolate a low-pressure fuel feed channel in the pump from pressure fluctuations at the inlet of an inlet control valve. Upstream of the inlet check valve, the low-pressure fuel feed channel is connected to a seal chamber surrounding the pumping plunger. Circulating fresh low-pressure fuel through the seal chamber ensures that the pumping plunger and the clearance between the plunger and the pump bore are cooled and lubricated with fuel, even when high pressure fuel is not produced by the high-pressure pump. The low- pressure fuel feed channel is connected to the low-pressure PFI outlet downstream of the seal chamber. This pump configuration provides stable source of low- pressure fuel for a PFI system.

公开(公告)号：WO2017213984A1

公开(公告)日：2017-12-14

申请号：PCT/US2017/035674

申请日：2017-06-02

Applicant: STANADYNE LLC

Inventor： LUCAS, Robert, G.

IPC: F02M59/02 ,  F02M51/06

Abstract: The valve assembly and associated pump, direct a magnetic flux path such that a carefully timed magnetic force is directly applied to an inlet valve member when a coil is energized. As a result, direct actuation of the inlet valve is achieved. This accommodates a new partial charge operating strategy that has a significant benefit to inlet pressure pulsations. The benefit of a partial charging strategy is reduced inlet pulsations and noise, especially during vehicle idle conditions when it is most objectionable.

Abstract translation: 阀组件和相关联的泵引导磁通路径，使得当线圈通电时，仔细定时的磁力被直接施加到入口阀构件。 结果，实现了入口阀的直接致动。 这适应了新的部分充气操作策略，其对入口压力脉动具有显着的益处。 部分充电策略的好处是可以减少入口脉动和噪音，特别是在车辆空转时最令人反感的时候。

公开(公告)号：WO2015164256A1

公开(公告)日：2015-10-29

申请号：PCT/US2015/026656

申请日：2015-04-20

Applicant: STANADYNE LLC

Inventor： MOREL, Kenneth, R. ,  LUCAS, Robert, G.

IPC: F02M37/04 ,  F16K17/04 ,  F16K17/20

CPC classification number: F02M37/0058 ,  F02M37/04 ,  F02M59/46 ,  F02M63/005 ,  F04B1/0452 ,  F04B53/10 ,  F16K17/04 ,  F16K17/0406 ,  F16K17/044 ,  F16K17/048

Abstract: A fuel pump including a low pressure infeed leading to a pumping chamber, a pumping plunger for pressurizing fuel in the pumping chamber, an outlet valve for delivering pressurized fuel from the pumping chamber to a high pressure outlet line during pumping, and an overpressure relief valve connected between the high pressure outlet line and the pumping chamber. A ball type relief valve element is spring biased to close against the relief valve seat. The spring is in a spring chamber that is fluidly isolated from the pumping chamber while the valve element is closed, preferably in direct hydraulic communication with the low pressure infeed, thereby reducing dead volume during normal pumping. The spring can act on the valve element through a piston, and in an alternative embodiment, the piston can provide a spill path from the pumping chamber to the low pressure infeed.

Abstract translation: 一种燃料泵，包括通向泵送室的低压进料，用于对泵送室中的燃料加压的泵送柱塞，用于在泵送期间将来自泵送室的加压燃料输送到高压出口管线的出口阀，以及超压安全阀 连接在高压出口管路和泵送室之间。 弹簧偏置的球型安全阀元件靠近安全阀座。 弹簧处于与泵送室流体隔离的弹簧室中，同时阀元件关闭，优选地与低压进料直接液压连通，从而在正常泵送期间减少死体积。 弹簧可以通过活塞作用在阀元件上，并且在替代实施例中，活塞可以提供从泵送室到低压进料的溢流路径。