公开(公告)号：US20190063385A1

公开(公告)日：2019-02-28

申请号：US16115854

申请日：2018-08-29

Applicant: DENSO CORPORATION

Inventor： Nao OGASAWARA ,  Daiji UEDA

IPC: F02M47/02 ,  F16K31/00

Abstract: A fuel injection device has a valve body, a drive portion, a nozzle needle, and a control valve body. The valve body defines a control chamber, a valve chamber and a low pressure communication passage. The nozzle needle is displaced due to a fuel pressure variation in the control chamber to open/close an injection port. When the control valve body sits on an upper seat surface, a low pressure communication passage is closed so that the valve chamber is fluidly disconnected from the low pressure chamber. The control valve body defines a gap restriction on the upper seat surface. A flow passage area of a sub orifice provided to the low pressure communication passage is smaller than a flow passage area of the gap restriction.

公开(公告)号：US20130195692A1

公开(公告)日：2013-08-01

申请号：US13755708

申请日：2013-01-31

Applicant: DENSO CORPORATION

Inventor： Takaharu SAKOH ,  Katsumi MORI ,  Nao OGASAWARA

IPC: F04B53/14

CPC classification number: F04B53/14 ,  F01L2107/00 ,  F04B1/0421 ,  F04B1/0426 ,  F04B53/16

Abstract: A supply pump includes a housing, a tappet, a guide groove, and a stopper pin. The housing includes a cylindrical sliding wall. The tappet is configured to be reciprocated along the sliding wall. The guide groove is provided for one of the housing and the tappet. One end of the guide groove includes a tapered surface. The stopper pin is provided for the other one of the housing and the tappet. The stopper pin is fitted into the guide groove to stop rotation of the tappet relative to the housing. When the tappet is displaced abnormally in an upper direction, the tapered surface is pressed on an end of the stopper pin to be engaged with the stopper pin.

Abstract translation: 供给泵包括壳体，挺杆，引导槽和止动销。 壳体包括圆柱形滑动壁。 挺杆构造成沿着滑动壁往复运动。 引导槽用于壳体和挺杆中的一个。 引导槽的一端包括锥形表面。 止动销用于外壳和挺杆中的另一个。 止动销被装配到引导槽中以停止挺杆相对于壳体的旋转。 当挺杆在上部方向异常移位时，锥形表面被压在止动销的端部上以与止动销接合。