US 12,313,067 B2
Dual gerotor apparatus, a powertrain assembley and an electrified vehicle
Yejin Jin, Shanghai (CN); Kai Chen, Shanghai (CN); and Guoqiang Sun, Shanghai (CN)
Assigned to VALEO POWERTRAIN (NANJING) CO., LTD., Nanjing (CN)
Appl. No. 18/042,140
Filed by VALEO POWERTRAIN (NANJING) CO., LTD., Nanjing (CN)
PCT Filed Aug. 17, 2021, PCT No. PCT/CN2021/112984
§ 371(c)(1), (2) Date Feb. 17, 2023,
PCT Pub. No. WO2022/037569, PCT Pub. Date Feb. 24, 2022.
Claims priority of application No. 202010836023.1 (CN), filed on Aug. 19, 2020.
Prior Publication US 2024/0011483 A1, Jan. 11, 2024
Int. Cl. F04C 2/10 (2006.01); F04C 2/22 (2006.01); F04C 11/00 (2006.01); F04C 23/00 (2006.01)
CPC F04C 2/102 (2013.01) [F04C 2/10 (2013.01); F04C 2/22 (2013.01); F04C 11/001 (2013.01); F04C 23/001 (2013.01)] 14 Claims
OG exemplary drawing
 
1. A dual gerotor apparatus, comprising:
a housing configured to provide a first and second hydraulic fluid circuit sharing a same single fluid inlet and a same single fluid outlet;
a gerotor assembly coupling with a rotatable shaft, the gerotor assembly includes a first gerotor pump and a second gerotor pump; and
a separation element disposed between the first gerotor pump and the second gerotor pump in an axial direction,
wherein the gerotor assembly is configured to transfer a hydraulic fluid flowing through the first or second hydraulic fluid circuit from the single fluid inlet to the single fluid outlet, and
wherein the first gerotor pump is configured to be in operation when the rotatable shaft rotates in a first direction, and the second gerotor pump is configured to be in operation when the rotatable shaft rotates in a second direction,
wherein the separation element is configured for isolating the fluid communication between the first and second gerotor pumps and for forming the first hydraulic fluid circuit,
wherein the separation element comprises an outer circumferential wall axially extending from a body portion of the separation element and along an outer periphery the first gerotor pump, the outer circumferential wall is configured for limiting a radial displacement for the first gerotor pump and for directing the first hydraulic fluid flowing through the first hydraulic fluid circuit, and
wherein a portion of the first hydraulic circuit is positioned between an outer surface of the outer circumferential wall and an inner circumferential surface of the housing.