Vehicular traction inverter temperature control system
AssigneeFord Global Technologies, LLC
InventorsLihua Chen, Baoming Ge, Fan Wang, Shahram Zarei, Fan Xu, Mohammed Khorshed Alam, Yan Zhou, Shuitao Yang, Petros G. Taskas
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Abstract
A vehicular system includes a pump, configured to circulate coolant for a traction inverter, and a controller. The controller may be configured to, responsive to each of a temperature of the traction inverter falling outside a first range or a requested flow rate of the pump falling outside a second range, operate the pump at a predefined speed, otherwise, operate the pump at a speed based on a difference between the temperature and a temperature associated with the coolant.
Claims18
A vehicular system comprising:
- a pump configured to circulate coolant for a traction inverter;
- and
- a controller configured to
- responsive to each of a temperature of the traction inverter falling outside a first range or a requested flow rate of the pump falling outside a second range, operate the pump at a predefined speed,
- otherwise, operate the pump at a speed based on a difference between the temperature and a temperature associated with the coolant.
A method comprising:
- by a controller,
- responsive to a temperature of a traction inverter exceeding a first threshold, operate a pump to circulate coolant at a predefined speed,
- responsive to a requested flow rate of the pump exceeding a second threshold, operate the pump at the predefined speed, and
- otherwise, operate the pump at a speed based on a difference between the temperature and a junction temperature of the traction inverter.
A vehicular system comprising:
- a pump configured to circulate coolant for a traction inverter;
- and
- a controller configured to
- responsive to a temperature of the traction inverter falling within a first range and a requested flow rate of the pump falling outside a second range, operate the pump at one of two predefined speeds,
- responsive to the temperature falling within the first range and the requested flow rate falling within the second range, operate the pump at a speed based on a difference between the temperature and a junction temperature of the traction inverter, and
- responsive to the temperature falling outside the first range, operate the pump at one of the two predefined speeds.
Dependencies are inferred from the claim text.