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JPS57171092A - Motor-driven fuel pump - Google Patents

Motor-driven fuel pump

Info

Publication number
JPS57171092A
JPS57171092A JP5441881A JP5441881A JPS57171092A JP S57171092 A JPS57171092 A JP S57171092A JP 5441881 A JP5441881 A JP 5441881A JP 5441881 A JP5441881 A JP 5441881A JP S57171092 A JPS57171092 A JP S57171092A
Authority
JP
Japan
Prior art keywords
fuel
sealing section
impeller
clearance
pump
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
JP5441881A
Other languages
Japanese (ja)
Inventor
Toshihiro Takei
Kazuma Matsui
Yoshiyuki Hattori
Masahiko Watanabe
Toshiaki Nakamura
Shunsaku Onishi
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Denso Corp
Original Assignee
NipponDenso Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by NipponDenso Co Ltd filed Critical NipponDenso Co Ltd
Priority to JP5441881A priority Critical patent/JPS57171092A/en
Publication of JPS57171092A publication Critical patent/JPS57171092A/en
Pending legal-status Critical Current

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D5/00—Pumps with circumferential or transverse flow
    • F04D5/002—Regenerative pumps

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Structures Of Non-Positive Displacement Pumps (AREA)

Abstract

PURPOSE:To improve performance of a pump, by forming a clearance between an impeller and a housing for constituting a sealing section, and providing a labyrinth at the sealing section for preventing leakage of fuel from the clearance. CONSTITUTION:A plurality of blade inserting grooves 1c are formed around the outer circumference of an impeller 1 on both sides thereof. A slit-like labyrinth 3a' is formed at a sealing section 3a that is formed between a suction port 6' and an outlet port 8 of a rear housing 3. Pressure of fuel is increased gradually as it proceeds from the suction port 6' toward the outlet port 8, so that a small amount of fuel tends to leak from the clearance between the partition 3a and the outermost peripheral part of the impeller 1. However, since a plurality of slit-like labyrinths 3a' are formed at the sealing section 3a, it is enabled to prevent leakage of fuel and hence to improve performance of the pump.
JP5441881A 1981-04-13 1981-04-13 Motor-driven fuel pump Pending JPS57171092A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP5441881A JPS57171092A (en) 1981-04-13 1981-04-13 Motor-driven fuel pump

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP5441881A JPS57171092A (en) 1981-04-13 1981-04-13 Motor-driven fuel pump

Publications (1)

Publication Number Publication Date
JPS57171092A true JPS57171092A (en) 1982-10-21

Family

ID=12970149

Family Applications (1)

Application Number Title Priority Date Filing Date
JP5441881A Pending JPS57171092A (en) 1981-04-13 1981-04-13 Motor-driven fuel pump

Country Status (1)

Country Link
JP (1) JPS57171092A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS62150098A (en) * 1985-12-25 1987-07-04 Nippon Denso Co Ltd Pump device
US5607283A (en) * 1993-03-30 1997-03-04 Nippondenso Co., Ltd. Westco-type fuel pump having improved impeller

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS62150098A (en) * 1985-12-25 1987-07-04 Nippon Denso Co Ltd Pump device
US5607283A (en) * 1993-03-30 1997-03-04 Nippondenso Co., Ltd. Westco-type fuel pump having improved impeller

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