Title:
OIL PUMP
Document Type and Number:
WIPO Patent Application WO/2020/189008
Kind Code:
A1
Abstract:
A discharge passage that leads from a pump discharge hole to a discharge port connected to an internal combustion engine is formed in a first housing and a second housing accommodating a pump constituent body. The discharge passage is provided with: a first passage that extends in a first direction, which is the direction running along the rotational axis of the pump constituent body, to communicate with the pump discharge hole, that extends in a second direction orthogonal to the first direction, and that is formed larger than the passage area of the pump discharge hole; and an enlarged passage that communicates with the first passage, that extends in the second direction, and that increases in passage area from the first passage towards a discharge port.
Inventors:
YOH EISHUN (JP)
SAGA KOJI (JP)
SAGA KOJI (JP)
Application Number:
PCT/JP2020/002446
Publication Date:
September 24, 2020
Filing Date:
January 24, 2020
Export Citation:
Assignee:
HITACHI AUTOMOTIVE SYSTEMS LTD (JP)
International Classes:
F04C2/344; F04C15/06
Foreign References:
| JPS5773881A | 1982-05-08 | |||
| JP2016104967A | 2016-06-09 |
Attorney, Agent or Firm:
ONO, Shinjiro et al. (JP)
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