Title:
FUEL SUPPLY PUMP
Document Type and Number:
WIPO Patent Application WO/2017/203812
Kind Code:
A1
Abstract:
The objective of the present invention is to provide: a suction valve which has a simple structure requiring a small number of man-hours for processing and ensures a sufficient flow path cross-sectional area so as to enable highly accurate flow rate control by preventing increase in pressure loss even when the flow rate of discharge fuel is high; and a low-cost fuel supply pump using the suction valve. The abovementioned objective can be achieved by a fuel supply pump provided with a pump body having a pressurization chamber formed therein, and with a suction valve disposed on the suction side of the pressurization chamber, the fuel supply pump being further provided with: an overlap part which is disposed between the pressurization chamber and the suction valve and which overlaps with the suction valve in the axial direction of the suction valve; and a plurality of fixation parts which, on a side closer to an outer periphery than an outer-periphery-side surface of the overlap part, are integrally formed with the overlap part, and fix the overlap part, wherein a first flow path is formed between the outer-periphery-side surface of the overlap part and a housing part disposed at a side further closer to the outer periphery than the outer-periphery-side surface of the overlap part, the first flow path is connected to a second flow path on a side closer to the pressurization chamber than a pressurization-chamber-side surface of the overlap part, and the first flow path and the second flow path are formed so as to be contiguously connected by the housing part.
Inventors:
ARITOMI SHUNSUKE (JP)
SUGANAMI MASAYUKI (JP)
HIGUMA MASATO (JP)
KOSHIZAKA ATSUSHI (JP)
SUGANAMI MASAYUKI (JP)
HIGUMA MASATO (JP)
KOSHIZAKA ATSUSHI (JP)
Application Number:
PCT/JP2017/011297
Publication Date:
November 30, 2017
Filing Date:
March 22, 2017
Export Citation:
Assignee:
HITACHI AUTOMOTIVE SYSTEMS LTD (JP)
International Classes:
F02M59/34; F02M59/20; F02M59/36
Foreign References:
| JP2005514571A | 2005-05-19 | |||
| JP2015057554A | 2015-03-26 | |||
| JP2012154295A | 2012-08-16 | |||
| JP2014141896A | 2014-08-07 |
Attorney, Agent or Firm:
TODA Yuji (JP)
Download PDF:
Previous Patent: WIRE-TYPE WINDOW REGULATOR
Next Patent: SPINDLE ROTATING UNIT AND MACHINING TABLE STRUCTURE FOR CAN MANUFACTURING APPARATUS
Next Patent: SPINDLE ROTATING UNIT AND MACHINING TABLE STRUCTURE FOR CAN MANUFACTURING APPARATUS