US 12,330,474 B2
Control device and control method
Takayuki Shimauchi, Toyota (JP)
Assigned to TOYOTA JIDOSHA KABUSHIKI KAISHA, Toyota (JP)
Filed by TOYOTA JIDOSHA KABUSHIKI KAISHA, Toyota (JP)
Filed on Sep. 2, 2021, as Appl. No. 17/465,082.
Claims priority of application No. 2020-163307 (JP), filed on Sep. 29, 2020.
Prior Publication US 2022/0097476 A1, Mar. 31, 2022
Int. Cl. B60H 1/00 (2006.01); B60H 1/03 (2006.01); B60L 58/27 (2019.01)
CPC B60H 1/0073 (2019.05) [B60H 1/03 (2013.01); B60L 58/27 (2019.02); B60H 2001/00949 (2013.01)] 6 Claims
OG exemplary drawing
 
1. A control device configured to control a vehicle coolant circuit including a water pump configured to circulate a coolant, a plurality of heat sources configured to heat the coolant, a heat using portion configured to use heat of the coolant, and a coolant passage configured to connect the water pump, the heat sources, and the heat using portion, the control device comprising a processor configured to:
calculate a target coolant temperature and control the heat sources based on the target coolant temperature;
correct the target coolant temperature by increasing the target coolant temperature in consideration of a loss of the heat of the coolant in the coolant passage;
calculate, based on a coolant flow rate, a correction value for correcting the target coolant temperature in consideration of the loss of the heat of the coolant in the coolant passage; and
calculate the coolant flow rate based on rotation speed of the water pump.