Title:
WESCO FUEL PUMP
Document Type and Number:
Japanese Patent JP3899473
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To increase the efficiency of a Wesco fuel pump in all regions of rotation and to secure a delivery flow in the low rotation region f an electric motor.
SOLUTION: The Wesco fuel pump comprises an impeller 7 rotationally driven by the electric motor M and a plurality of V-shaped impeller members 7b provided on the outer periphery of the impeller 7 in the circumferential direction. A V-opening angle Y of the impeller member at its back side 7Br in a rotating direction R is formed smaller than a V-opening angle X of the impeller member 7B at its front side 7Br in the rotating direction R. A groove width W of a space portion 7E formed between the impellers 7B, 7B is gradually larger as ranging from a V-shaped base portion 7Ba to an opening end 7Bg.
Inventors:
Takaoka Ryoho
Torikai Minsei
Torikai Minsei
Application Number:
JP2001324398A
Publication Date:
March 28, 2007
Filing Date:
October 23, 2001
Export Citation:
Assignee:
Keihin Co., Ltd.
International Classes:
F02M37/10; F04D5/00; (IPC1-7): F04D5/00; F02M37/10
Domestic Patent References:
| JP50065912A | ||||
| JP2000064989A | ||||
| JP2000240582A | ||||
| JP10115265A |
Foreign References:
| WO2001071192A1 |
Attorney, Agent or Firm:
Hiroshi Ikeda