US 11,754,176 B2
Control method and apparatus for protecting damper clutch of vehicle
Sung-Hyun Park, Gyeonggi-do (KR); Se-Hoon Son, Gyeonggi-do (KR); John-Ha Lee, Gyeonggi-do (KR); and Nam-Hoon Kim, Gyeonggi-do (KR)
Assigned to Hyundai Kefico Corporation, Gyeonggi-Do (KR)
Filed by Hyundai Kefico Corporation, Gyeonggi-do (KR)
Filed on Nov. 9, 2022, as Appl. No. 17/983,912.
Claims priority of application No. 10-2021-0154140 (KR), filed on Nov. 10, 2021.
Prior Publication US 2023/0146695 A1, May 11, 2023
Int. Cl. F16H 61/14 (2006.01); F16H 45/02 (2006.01)
CPC F16H 61/143 (2013.01) [F16H 45/02 (2013.01); F16H 2045/0221 (2013.01); F16H 2061/145 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A control apparatus for protecting a damper clutch of a vehicle from a repetitive tip-in (an action of pressing an accelerator pedal to realize acceleration)/tip-out (an action of depressing the accelerator pedal to release the acceleration), the control apparatus comprising:
a solenoid for the damper clutch, the solenoid being configured to control an operation of the damper clutch; and
a Transmission Control Unit (TCU) configured to control a transmission and the solenoid for the damper clutch by cooperating with an Engine Control Unit (ECU), wherein the TCU comprises:
a slip power calculation unit configured to calculate a slip power in real time on the basis of a turbine speed of a torque converter, an engine speed, a capacity coefficient of the torque converter, a clutch torque, and a hydraulic torque;
an intention determination unit configured to determine whether the repetitive tip-in/tip-out that is intentionally performed occurs or not on the basis of a change in the slip power that is calculated in real time for a set time by the slip power calculation unit; and
a protection logic operation unit configured to operate a damper clutch protection logic set to restrain a slip of the damper clutch by increasing hydraulic pressure applied to the damper clutch when it is determined that the repetitive tip-in/tip-out that is intentionally performed occurs.