公开(公告)号：US20180306184A1

公开(公告)日：2018-10-25

申请号：US15767791

申请日：2016-09-16

Applicant: KYB Corporation

Inventor： Yoshinari NAKAMURA ,  Shinji YAKABE ,  Kazunari SUZUKI ,  Koichiro AKATSUKA ,  Hirohito WATANABE

IPC: F04C15/06 ,  F04C2/344

CPC classification number: F04C15/06 ,  F04C2/344 ,  F04C2/3446 ,  F04C2240/10

Abstract: A vane pump includes a rotor; a plurality of vanes; a cam ring; a second side plate; a suction port provided in the second side plate, the suction port being configured to guide working fluid to the pump chambers; a pump cover arranged so as to sandwich the second side plate with the cam ring; and a low-pressure chamber formed in the pump cover, the low-pressure chamber having an opening portion communicating with the suction port. The suction port is arranged so as to be shifted towards a forward side of in a rotating direction of the rotor with respect to the opening portion of the low-pressure chamber.