公开(公告)号：US10331145B2

公开(公告)日：2019-06-25

申请号：US15419071

申请日：2017-01-30

Applicant: Stanadyne LLC

Inventor： Mark Raymond Duffy

IPC: F16K17/04 ,  G05D16/20 ,  F02M59/46 ,  F16K31/122 ,  F16K31/42 ,  F02M59/36

Abstract: The proportional control valve for a fuel pump has a metering assembly within a tightly fit bore and a vent valve. The metering assembly includes a metering piston assembly, a piston biasing spring, an armature and a vent valve. The vent valve, such as a ball, is affixed to the armature and the metering piston assembly is configured around the vent valve in a manner that couples the metering piston to the armature. The metering piston assembly comprises a metering piston and a vent valve seat, permanently joined together, which contain a seal and a seat surface respectively between which the vent valve is permitted to move during the operation of the proportional control valve.

公开(公告)号：US20180217619A1

公开(公告)日：2018-08-02

申请号：US15419071

申请日：2017-01-30

Applicant: Stanadyne LLC

Inventor： Mark Raymond Duffy

IPC: G05D16/20 ,  F02M59/46 ,  F16K17/04 ,  F16K31/122 ,  F16K31/42

CPC classification number: G05D16/2093 ,  F02M59/367 ,  F02M59/464 ,  F02M59/466 ,  F16K17/0406 ,  F16K31/1221 ,  F16K31/42 ,  G05D16/2022 ,  G05D16/2097

Abstract: The proportional control valve for a fuel pump has a metering assembly within a tightly fit bore and a vent valve. The metering assembly includes a metering piston assembly, a piston biasing spring, an armature and a vent valve. The vent valve, such as a ball, is affixed to the armature and the metering piston assembly is configured around the vent valve in a manner that couples the metering piston to the armature. The metering piston assembly comprises a metering piston and a vent valve seat, permanently joined together, which contain a seal and a seat surface respectively between which the vent valve is permitted to move during the operation of the proportional control valve.