Patent ID: 11898929
Assignee: SUBARU CORPORATION
Field: Transport (Mechanical engineering)
Classification: CPC G  B | IPC B  G

Claim 0:
1. A thermal management system for a vehicle, the thermal management system comprising:
a first flow path through which a heating medium flows;
a first pump that is located on the first flow path and that circulates the heating medium in the first flow path;
a first temperature sensor that is located on the first flow path and that is configured to measure a first temperature of the heating medium;
a second flow path through which the heating medium flows;
a second pump that is located on the second flow path and that circulates the heating medium in the second flow path;
a second temperature sensor that is located on the second flow path and that is configured to measure a second temperature of the heating medium;
a switching valve configured to switch between a first mode in which the first flow path and the second flow path are separated and a second mode in which a part of the first flow path and a part of the second flow path are connected to constitute a third flow path; and
a control unit that determines whether the switching valve is in a slightly open state, wherein:
a temperature of the heating medium in the second flow path is higher than a temperature of the heating medium in the first flow path; and
in the first mode, the control unit
acquires a measured value of the first temperature from the first temperature sensor and a measured value of the second temperature from the second temperature sensor at first predetermined time that is when a predetermined amount of time has passed since at least one of the first temperature and the second temperature started to rise,
acquires an estimated value of the first temperature and an estimated value of the second temperature at the first predetermined time that are estimated values when the switching valve is not in the slightly open state, and
determines that the switching valve is in the slightly open state when the measured value of the first temperature is higher than the estimated value of the first temperature by a value greater than a first predetermined threshold and the measured value of the second temperature is lower than the estimated value of the second temperature by a value greater than a second predetermined threshold.