US 12,007,018 B2
Hydraulic pressure control method for a vehicle transmission
Jin Young Hwang, Suwon-si (KR); Bong Uk Bae, Daegu (KR); Ki Bum Kim, Seoul (KR); Se Hwan Jo, Bucheon-si (KR); and Seong Min Son, Pohang-si (KR)
Assigned to HYUNDAI MOTOR COMPANY, Seoul (KR); and KIA CORPORATION, Seoul (KR)
Filed by HYUNDAI MOTOR COMPANY, Seoul (KR); and KIA CORPORATION, Seoul (KR)
Filed on May 13, 2022, as Appl. No. 17/744,193.
Claims priority of application No. 10-2021-0109045 (KR), filed on Aug. 18, 2021.
Prior Publication US 2023/0053741 A1, Feb. 23, 2023
Int. Cl. F16H 61/00 (2006.01); F16H 59/42 (2006.01); F16H 59/44 (2006.01); F16H 59/48 (2006.01); F16H 59/50 (2006.01); F16H 59/72 (2006.01); F16H 61/02 (2006.01); F16H 59/14 (2006.01)
CPC F16H 61/0021 (2013.01) [F16H 59/42 (2013.01); F16H 59/44 (2013.01); F16H 59/48 (2013.01); F16H 59/50 (2013.01); F16H 59/72 (2013.01); F16H 61/0025 (2013.01); F16H 61/0265 (2013.01); F16H 61/0274 (2013.01); F16H 61/0276 (2013.01); F16H 2059/147 (2013.01); F16H 2061/0096 (2013.01)] 9 Claims
OG exemplary drawing
 
1. A hydraulic pressure control method for a vehicle transmission, the hydraulic pressure control method comprising:
accumulating factors representing usage of a vehicle;
accumulating factors representing a driving tendency of a driver of the vehicle;
calculating a first line pressure compensation value according to the usage based on accumulated values of the factors representing the usage of the vehicle;
calculating a second line pressure compensation value according to the driving tendency based on accumulated values of the factors representing the driving tendency;
determining a final line pressure by adding the first line pressure compensation value according to the usage and the second line pressure compensation value according to the driving tendency to a basic line pressure; and
operating a transmission hydraulic system according to the final line pressure.