Title:
FRICTION REGENERATIVE FUEL PUMP
Document Type and Number:
Japanese Patent JP3959012
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To reduce power consumption by improving pump efficiency of a friction regenerative fuel pump of a side channel shape.
SOLUTION: Lead-in passages 3b, 4b for leading fuel into main flow passages 3a, 4a are respectively and independently provided in the main flow passages 3a, 4a, and lead-out passages 3c, 4c are provided on the outside of an outer peripheral end of an impeller 5 by annexing the two main flow passages 3a, 4a. Therefore, a conventional communicating hole 102b provided on a cascade 5b portion of the impeller 5 can be abolished. Swirling flow is generated from a close part to end points of the lead-in passages 3b, 4b(starting points of the main flow passages 3a, 4a) into the cascade 5b, so that boosting action of discharging pressure starts to improve the pump efficiency. As a result, the power consumption of the fuel pump can be reduced.
Inventors:
Masanori Ikeya
Application Number:
JP2002303611A
Publication Date:
August 15, 2007
Filing Date:
September 10, 2002
Export Citation:
Assignee:
Aisan Industry Co., Ltd.
International Classes:
F04D5/00; (IPC1-7): F04D5/00
Domestic Patent References:
| JP5018388A | ||||
| JP6229389A | ||||
| JP57038693A |
Foreign References:
| WO1999028631A1 | ||||
| EP0118027A1 |
Attorney, Agent or Firm:
Okada International Patent Office
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