Title:
COMBINED FILTER AND ADJUSTER FOR A FUEL INJECTOR
Document Type and Number:
WIPO Patent Application WO2001057385
Kind Code:
A3
Abstract:
A fuel injector for controlling fuel flow to an internal combustion engine and a method of setting dynamic calibration for the fuel injector. The fuel injector comprises a body, a seat, an armature assembly, a resilient member, and a member. The body extends along a longitudinal axis. The seat is secured to the body and defines an opening through which fuel flows. The armature assembly moves along the longitudinal axis with respect to the body between first and second positions. The first position is spaced from the seat such that fuel flow through the opening is permitted, and the second position contiguously engages the seat such that fuel flow is prevented. The resilient member biases the armature assembly toward the second position. And the member extends parallel to the longitudinal axis between a first portion and a second portion. The first portion supports the resilient member and engages the body, and the second portion has a filter. The method comprises providing the member extending between the first portion and the second portion, fixing the filter to the second portion, moving the member along the longitudinal axis with respect to the body; and engaging the first portion with respect to the body such that the first portion supports the resilient member in a predetermined dynamic state.
Inventors:
MCFARLAND ROBERT
Application Number:
PCT/US2001/003529
Publication Date:
March 07, 2002
Filing Date:
February 02, 2001
Export Citation:
Assignee:
SIEMENS AUTOMOTIVE CORP LP (US)
International Classes:
F02M51/06; F02M61/16; F02M61/18; F02M63/00; (IPC1-7): F02M61/16
Foreign References:
| US5340032A | 1994-08-23 | |||
| US5921475A | 1999-07-13 | |||
| US5937887A | 1999-08-17 | |||
| US5335863A | 1994-08-09 | |||
| FR2432612A1 | 1980-02-29 | |||
| US5516424A | 1996-05-14 | |||
| US4590911A | 1986-05-27 |
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