ALEXANDRIA, Va., March 5 -- United States Patent no. 12,241,546, issued on March 4, was assigned to HYUNDAI MOTOR COMPANY (Seoul, South Korea) and KIA Corp. (Seoul, South Korea).
"Vehicle powertrain shift control method" was invented by Sang Chul Lee (Seoul, South Korea).
According to the abstract* released by the U.S. Patent & Trademark Office: "A vehicle powertrain shift control method includes a step of determining which of four types of divided hydraulic pressure difference areas a main hydraulic pressure difference belongs, by a controller, the main hydraulic pressure difference being a value obtained by subtracting a coupling-side preparatory hydraulic pressure from a coupling-side preliminary target pressure, and a step of limiting...