公开(公告)号：WO2020112933A1

公开(公告)日：2020-06-04

申请号：PCT/US2019/063504

申请日：2019-11-27

Applicant: STANADYNE LLC

Inventor： PELLINI, Richard, P. ,  MOREL, Kenneth, R. ,  PALERMO, David, G. ,  MYREN, Dominic, M. ,  NORKIN, Yevgeniy ,  WEGRZYNIAK, Michael

IPC: F02M59/34 ,  F02M63/00 ,  F02D7/00 ,  F02D41/38 ,  F02M61/20 ,  F02M59/36 ,  F02M59/46 ,  F02M63/02

Abstract: A high pressure fuel pump includes an inlet metering valve arranged to control a quantity of fuel delivered to the pumping chamber during retracting motion of the pumping plunger. The inlet metering valve includes a metering valve member movable between a closed position and an open position, movement of the metering valve member from the closed position to the open position defining a variable flow area that increases as the metering valve member moves from the closed position toward the open position. An actuator piston in an actuator bore is exposed to pressure in the common rail. The actuator piston is biased toward a first position corresponding to low pressure in the common rail and movable toward a second position corresponding to maximum pressure in the common rail. The actuator piston includes a valve stop that determines a metering position of the metering valve member.

公开(公告)号：WO2020117310A1

公开(公告)日：2020-06-11

申请号：PCT/US2019/028469

申请日：2019-04-22

Applicant: STANADYNE LLC

Inventor： PELLINI, Richard, Paulo ,  MOREL, Kenneth, R. ,  PALERMO, David, G. ,  MYREN, Dominic, M. ,  NORKIN, Yevgeniy ,  WEGRZYNIAK, Michael

IPC: F02M59/46 ,  F16K17/04

Abstract: The disclosed integrated outlet check valve (16) and pressure relief valve (14) are used in a high pressure fuel pump (10) including a pumping chamber (42) and an outlet fitting (18) defining an outlet passage to a common rail (26). The pressure relief valve (14) comprises a movable pressure relief valve shuttle (112) including a pressure relief valve surface (114) configured to mate with a pressure relief valve seat (116) in a closed position. The pressure relief valve shuttle (112) moves from the closed position to an open position when pressure in the common rail (26) exerts a force greater than the bias of a pressure relief valve spring (118). The pressure relief valve shuttle (112) also includes an outlet check valve seat (110) configured to mate with an outlet check valve ball (106) in a closed position. The outlet valve ball (106) moves from the closed position to an open position when pressure in the outlet passage is less than pressure in the pumping chamber (42).

公开(公告)号：WO2020117311A1

公开(公告)日：2020-06-11

申请号：PCT/US2019/028472

申请日：2019-04-22

Applicant: STANADYNE LLC

Inventor： PELLINI, Richard, Paulo ,  MOREL, Kenneth, R. ,  PALERMO, David, G. ,  MYREN, Dominic, M. ,  WEGRZYNIAK, Michael ,  NORKIN, Yevgeniy

IPC: F02M59/36 ,  F02M59/46 ,  F02M63/00

Abstract: The disclosed inlet check valve (62) is used in a high pressure fuel pump (10) and is comprised of a valve member (64) integrally connected to a valve stem (66) which is coupled to an inlet valve armature (70). The valve member (64) has a stroke along an axis between an open position and a closed position. An inlet valve solenoid (74) generates a magnetic field in an inlet valve pole (76) to attract the inlet valve armature (70) and move the valve member (64) from the open position to the closed position. In the open position, the valve member (64) contacts an inlet valve stop (68) and a gap greater than the stroke of the valve member (64) is defined along the axis between the inlet valve armature (70) and the inlet valve pole (76). In the closed position, an inlet valve seat (58) mates with the valve member (64) and an armature gap remains between the inlet valve armature (70) and the inlet valve pole (76).

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。