US 12,311,945 B2
Eco-friendly vehicle and launch control method therefor
Jin Kyeom Cho, Suwon-si (KR); Jea Mun Lee, Seoul (KR); Sung Bae Jeon, Ansan-si (KR); Hui Un Son, Suwon-si (KR); and Joon Young Park, Seoul (KR)
Assigned to HYUNDAI MOTOR COMPANY, Seoul (KR); and KIA MOTORS CORPORATION, Seoul (KR)
Filed by HYUNDAI MOTOR COMPANY, Seoul (KR); and KIA MOTORS CORPORATION, Seoul (KR)
Filed on Dec. 4, 2019, as Appl. No. 16/703,455.
Claims priority of application No. 10-2019-0082740 (KR), filed on Jul. 9, 2019.
Prior Publication US 2021/0009130 A1, Jan. 14, 2021
Int. Cl. B60W 10/10 (2012.01); B60W 10/08 (2006.01); B60W 30/18 (2012.01); B60W 50/14 (2020.01)
CPC B60W 30/18027 (2013.01) [B60W 10/08 (2013.01); B60W 10/10 (2013.01); B60W 50/14 (2013.01); B60W 2050/146 (2013.01); B60W 2510/082 (2013.01); B60W 2520/10 (2013.01); B60W 2520/28 (2013.01); B60W 2540/12 (2013.01); B60W 2552/15 (2020.02); B60W 2710/08 (2013.01); B60W 2710/10 (2013.01)] 11 Claims
OG exemplary drawing
 
11. A controller for an eco-friendly vehicle which comprises an engine, a motor, an engine clutch coupled between the engine and the motor, and a transmission coupled between the motor and wheels of the eco-friendly vehicle, the controller comprising:
a determination unit including a processor configured to determine whether a first condition for enabling a preset stop control is satisfied, and configured to make a first request for enabling the preset stop control when the first condition is satisfied; and
a controller configured to turn off a control configured to generate a creep torque from the motor upon the first request,
wherein the processor of the determination unit is configured to make a second request to the controller for turning off the preset stop control, control the transmission to transition from a lock state into an open state and enabling a launch control in response that a brake is released from a pressed state under the preset stop control while the first condition is satisfied,
wherein a gear arrangement of the transmission is in a rear alignment state when the brake is released from the pressed state;
wherein the controller is configured to control the transmission in the open state and enable the control for generating the creep torque upon the second request until revolutions per minute (RPM) of the motor enters a preset threshold range;
wherein the processor of the determination unit is configured to make a third request to the controller for turning off the launch control upon determining that the RPM of the motor enters the preset threshold range while the transmission is in the open state;
wherein the controller is configured to sequentially control the transmission from a slip state to the lock state upon the third request, and
wherein the first condition is satisfied when a transmission lever is in a drive stage, the eco-friendly vehicle is in a downhill road situation, the brake is manipulated, and a vehicle speed or a wheel speed is zero (0).