US 11,702,608 B2
Lubrication method
Yuji Shitara, Tokyo (JP); Yohei Shono, Tokyo (JP); Hidetoshi Ogata, Tokyo (JP); Kazushi Kodama, Tokyo (JP); Hiroshi Matsuura, Tokyo (JP); and Satoshi Masuyama, Tokyo (JP)
Assigned to ENEOS CORPORATION, Tokyo (JP)
Appl. No. 17/258,310
Filed by ENEOS Corporation, Tokyo (JP)
PCT Filed Jul. 30, 2019, PCT No. PCT/JP2019/029891
§ 371(c)(1), (2) Date Jan. 6, 2021,
PCT Pub. No. WO2020/031796, PCT Pub. Date Feb. 13, 2020.
Claims priority of application No. 2018-147692 (JP), filed on Aug. 6, 2018.
Prior Publication US 2021/0269731 A1, Sep. 2, 2021
Int. Cl. C10M 105/32 (2006.01); C10M 103/02 (2006.01); C10M 171/02 (2006.01); C10M 171/06 (2006.01)
CPC C10M 105/32 (2013.01) [C10M 103/02 (2013.01); C10M 171/02 (2013.01); C10M 171/06 (2013.01); C10M 2201/0413 (2013.01); C10M 2201/0613 (2013.01)] 5 Claims
OG exemplary drawing
 
1. A lubrication method, comprising:
storing a lubricating oil composition which comprises an ester as a lubricating base oil in a storage unit, and
applying the lubricating oil composition stored in the storage unit to a sliding unit in a refrigerant circulation system via a circulation type supply unit,
wherein the sliding unit is a unit which is provided with a pair of sliding members facing each other and relatively moving, and slides through a sliding surface in at least one of the sliding members;
wherein at least one of the sliding members comprises at least one selected from the group consisting of
a liquid crystal polymer and
a polyetheretherketone;
wherein the sliding member further comprises a solid lubricant and a reinforcement fiber; and
wherein a viscosity of the lubricating base oil based on the ISO viscosity grade is VG2 or more and VG3 or less.