US 12,247,178 B2
Lubrication of rechargeable hybrid vehicle engine and hybrid vehicle comprising a range extender
Gautier Burette, Solaize (FR); Mickael Debord, Solaize (FR); and David Senard, Solaize (FR)
Assigned to TotalEnergies OneTech, Courbevoie (FR)
Appl. No. 18/285,040
Filed by TotalEnergies OneTech, Courbevoie (FR)
PCT Filed Mar. 30, 2022, PCT No. PCT/EP2022/058431
§ 371(c)(1), (2) Date Sep. 29, 2023,
PCT Pub. No. WO2022/207715, PCT Pub. Date Oct. 6, 2022.
Claims priority of application No. 21 03252 (FR), filed on Mar. 30, 2021.
Prior Publication US 2024/0191153 A1, Jun. 13, 2024
Int. Cl. C10M 169/04 (2006.01); C10M 135/18 (2006.01); C10N 20/02 (2006.01); C10N 30/00 (2006.01); C10N 30/02 (2006.01); C10N 30/04 (2006.01); C10N 40/00 (2006.01); C10N 40/25 (2006.01)
CPC C10M 169/04 (2013.01) [C10M 135/18 (2013.01); C10M 2203/003 (2013.01); C10M 2219/068 (2013.01); C10N 2020/02 (2013.01); C10N 2030/02 (2013.01); C10N 2030/04 (2013.01); C10N 2030/54 (2020.05); C10N 2030/74 (2020.05); C10N 2040/25 (2013.01); C10N 2040/40 (2020.05)] 18 Claims
OG exemplary drawing
 
1. A method for lubricating a rechargeable hybrid vehicle engine or a hybrid vehicle engine comprising a range extender, comprising contacting at least one mechanical part of the engine with a lubricant composition of grade OW-8 according to the SAEJ300 classification, comprising at least one base oil, at least one friction modifying additive, from 0.1 to 10% by weight of at least one polymer improving the viscosity index, the lubricant composition having a kinematic viscosity measured at 40°° C. according to standard ASTM D445 lower than 20 mm2/s, a kinematic viscosity measured at 100° C. according to standard ASTM D445 lower than 5 mm2/s, and a Noack volatility measured at 250° C. according to standard CEC-L-40-A-93 of between 25% and 85%.