Title:
電動燃料ポンプ
Document Type and Number:
Japanese Patent JP3982262
Kind Code:
B2
Abstract:
An electric fuel pump for supplying fuel by rotationally driving an impeller (30) within a pump flow path (13) with the aid of a motor section (3), wherein vane segments (31A, 31B) of the impeller (30) are staggered by a prescribed distance (d) at the front and rear and circumferentially of the impeller (30), guiding faces (31a, 31b) which extend from the sides of the end faces to the outermost periphery of the impeller (30) are formed in the staggered portions, and partitions (32) are provided between the a adjacent vanes (31), each of the partitions having guiding faces (32a, 32b) on the sides of the end faces of the impeller (30) and an outermost peripheral face (32c) located more inwardly than the outermost peripheral face (31c) of the vane (31). In such a configuration, the vane segments (31A, 31B) do not simultaneously collide with the end face (9b) of the radial sealing portion (9a) so that the noise due to fuel collision can be reduced and the pumping efficiency can be improved.
Inventors:
Hiroshi Yoshioka
Application Number:
JP2001565521A
Publication Date:
September 26, 2007
Filing Date:
March 10, 2000
Export Citation:
Assignee:
Mitsubishi Electric Corporation
International Classes:
F04D5/00; F02M37/04; F02M37/08; F04D29/18
Domestic Patent References:
| JP6159283A | ||||
| JP6229388A |
Foreign References:
| WO1999007990A1 |
Attorney, Agent or Firm:
Shogo Takahashi
Tadahiko Inaba
Kanako Murakami
Nakatsuru Kazutaka
Tadahiko Inaba
Kanako Murakami
Nakatsuru Kazutaka