Title:
流体送出装置用カムリング・ベアリング
Document Type and Number:
Japanese Patent JP4597669
Kind Code:
B2
Abstract:
A bearing assembly is provided for a fuel delivery system that includes a pump ( 10 ) having a housing that rotatably receives a rotor ( 20 ) carrying vanes ( 26 ) thereon, a cam ring ( 70 ) received between the housing and rotor ( 20 ), and a support member of yoke ( 50 ) encompassing the cam ring ( 70 ) to selectively vary fuel flow. The bearing assembly ( 80 ) is a journal bearing between the yoke ( 50 ) and the cam ring ( 70 ) and includes an annular surface having a central opening therethrough. The annular surface includes a first, high pressure pad ( 102 ) and a second, low pressure pad ( 104 ) substantially diametrically opposite the first pad and separated by first and second lands ( 106, 108 ). The circumferential extent of the first pad ( 102 ) is at least as great as an inner diameter of the cam ring ( 70 ). Circumferential ends of the second pad ( 104 ) are wider than circumferential ends of the first pad. The first and second pads ( 102, 104 ) are formed by circumferentially extending grooves that extend an entire width of the bearing so that the cam ring moves between the first and second pads, and thereby varies a clearance between the lands ( 106, 108 ) and the cam ring ( 70 ).
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Inventors:
Clements, Martin A
Robert Nizen
Robert Nizen
Application Number:
JP2004523188A
Publication Date:
December 15, 2010
Filing Date:
July 21, 2003
Export Citation:
Assignee:
Argo-Tech Corporation
International Classes:
F04C2/344; F04C14/22; F04C2/348; F04C15/06
Domestic Patent References:
| JP2086982A | ||||
| JP59188077A |
Foreign References:
| US3143079 | ||||
| US2635551 | ||||
| GB2074247A | ||||
| US2918877 | ||||
| US1671240 | ||||
| US2241824 | ||||
| US2589449 | ||||
| US2782724 | ||||
| US5518380 | ||||
| US3744939 | ||||
| US4354809 | ||||
| US5716201 |
Attorney, Agent or Firm:
Kazuo Shamoto
Tadashi Masui
Yasushi Kobayashi
Akio Chiba
Hiroyuki Tomita
Fujihiro Kanda
Tadashi Masui
Yasushi Kobayashi
Akio Chiba
Hiroyuki Tomita
Fujihiro Kanda