Title:
VARIABLE DISPLACEMENT PUMP
Document Type and Number:
WIPO Patent Application WO/2018/147081
Kind Code:
A1
Abstract:
In this variable displacement pump 1, first and second intake areas, which are a pair of areas in which the volume of each of a plurality of pump chambers 16 increases following rotation of a rotor 7, are disposed in symmetrical positions with respect to a rotational axis O. Furthermore, first and second discharge areas, which are a pair of areas in which the volume of each of the plurality of pump chambers 16 decreases following rotation of the rotor 7, are disposed in symmetrical positions with respect to the rotational axis O. The ratio of the amount of increase in the volume of the plurality of pump chambers 16 in the first and second intake areas, to the amount of decrease in the volume of the plurality of pump chambers 16 in the first and second discharge areas, is changed by rotating a cam ring 8 in a direction around the rotational axis O with respect to a housing 2.
Inventors:
SOEDA JUN (JP)
Application Number:
PCT/JP2018/002094
Publication Date:
August 16, 2018
Filing Date:
January 24, 2018
Export Citation:
Assignee:
HITACHI AUTOMOTIVE SYSTEMS LTD (JP)
International Classes:
F04C14/10; F04C2/344
Foreign References:
| JP2012082762A | 2012-04-26 | |||
| JP2014005781A | 2014-01-16 | |||
| JP2014163267A | 2014-09-08 |
Attorney, Agent or Firm:
ONO, Shinjiro et al. (JP)
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