公开(公告)号：US20040173694A1

公开(公告)日：2004-09-09

申请号：US10802275

申请日：2004-03-17

Applicant: Delphi Technologies, Inc.

Inventor： Michael Peter Cooke

IPC: F16K031/12

CPC classification number: F02M51/0603 ,  F02M2200/701 ,  F02M2200/704

Abstract: A fuel injector comprising a valve member which is engageable with a valve seating to control fuel delivery from the injector, an actuator arrangement and an amplifier arrangement for transmitting movement of the actuator arrangement to the valve member. The amplifier arrangement comprises a piston member with which the actuator arrangement is cooperable to apply a retracting force to the piston member, and a control chamber for fluid. The amplifier arrangement preferably comprises a mechanical coupling arrangement for coupling movement of the piston member to the valve member upon application of an initial retracting force to the piston member. The amplifier arrangement is arranged such that, upon application of the initial retracting force, the valve member is caused to move with the piston member away from the valve seating, movement of the valve member being decoupled from the piston member following initial movement of the valve member away from the valve seating so as to provide variable amplification of movement of the actuator arrangement to the valve member.

Abstract translation: 一种燃料喷射器，包括可与阀座接合以控制从喷射器输送燃料的阀构件，致动器装置和用于将致动器装置的运动传递到阀构件的放大器装置。 放大器装置包括活塞构件，致动器装置可通过该活塞构件配合以向活塞构件施加缩回力，以及用于流体的控制室。 放大器装置优选地包括机械联接装置，用于在向活塞构件施加初始缩回力时将活塞构件的运动耦合到阀构件。 放大器布置被布置成使得在施加初始缩回力时，阀构件随着活塞构件离开阀座而移动，阀构件的运动在阀的初始移动之后与活塞构件分离 构件远离阀座，以便提供致动器装置到阀构件的运动的可变放大。