Title:
MOTOR-DRIVEN FUEL PUMP
Document Type and Number:
WIPO Patent Application WO/2001/023739
Kind Code:
A1
Abstract:
A motor-driven fuel pump, wherein permanent magnets (30, 31) are disposed on both sides of a rotor (16), with respect to its centerline, which crosses perpendicularly to the direction of a load applied to an impeller (4) by a pressure distribution inside a pump flow path (7), and the axial center (31a) of the permanent magnet (31) is disposed offset from the axial center (30a) of the other permanent magnet (30) to the impeller (4) side so as to generate a torque on the rotor (16), whereby a load applied to bearings (17, 18) is reduced to make it difficult for a pump efficiency to lower and the bearings (17, 18) to wear.
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Inventors:
YOSHIOKA HIROSHI (JP)
Application Number:
PCT/JP1999/005361
Publication Date:
April 05, 2001
Filing Date:
September 30, 1999
Export Citation:
Assignee:
MITSUBISHI ELECTRIC CORP (JP)
YOSHIOKA HIROSHI (JP)
YOSHIOKA HIROSHI (JP)
International Classes:
F02M37/08; (IPC1-7): F02M37/08
Foreign References:
| JPH04200252A | 1992-07-21 | |||
| JPH04200253A | 1992-07-21 |
Other References:
See also references of EP 1136690A4
Attorney, Agent or Firm:
Miyata, Kaneo (Marunouchi 2-Chome Chiyoda-ku Tokyo, JP)
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