Abstract: A thermal management system is provided for a vehicle that includes a traction battery. The thermal management system includes refrigerant and cooling subsystems. The cooling subsystem includes a cabin coolant loop that provides thermal management of a passenger cabin of the vehicle, a battery coolant loop that provides thermal management of the traction battery and a drivetrain coolant loop that provides thermal management of a drivetrain and power electronics of the vehicle. The cabin, battery and the drivetrain coolant loops are interconnected via coolant proportional valves and fluid lines.

Abstract: A vehicle apparatus (10a; 10b; 10c) having at least one thermal management unit (12a; 12b; 12c) which has at least one first throughflow region (14a; 14b; 14c) and at least one second throughflow region (16a; 16b; 16c), which are connectable in accordance with demand in each case to a first heat circuit (18a) and/or to a second heat circuit (20a), and has a heat-exchange unit (22a; 22b; 22c) which, in at least one operating state, exchanges heat in accordance with demand between the first throughflow region (14a; 14b; 14c) and the second throughflow region (16a; 16b; 16c).

Abstract: Method of cooling a heat exchanger of an engine using a cooling fan system includes: measuring conditions of an engine cooling system, determining a desired fan cooling demand. Based on the fan cooling demand, a fan control circuit operates to selectively control an electrically commutated (EC) motor at a continuously variable speed for an EC cooling fan and to control a direct current (DC) motor of a DC cooling fan. The DC motor is controlled to: not operate the DC cooling fan, operate the DC motor at a first predetermined operating speed, and operate the DC motor at a second predetermined operating speed corresponding to a second DC motor speed signal that is less than the first predetermined operating speed. The conditions for determining fan cooling demand include at least one of a temperature and a pressure of an engine coolant and of a refrigerant of a vehicle air conditioning system.

Abstract: An axial fan assembly includes a hub, a plurality of connection structures, and a plurality of isolated members. The hub is rotatable about an axis of rotation and includes a radially extending face and a cylindrical portion extending axially from the face. The face includes a radially inner face portion and a radially outer face portion. The plurality of connection structures extends radially inwardly from the radially outer face portion and extends radially outward from the radially inner face portion. The plurality of isolated members extends radially outwardly from the radially inner face portion and is isolated from the plurality of connection structures and from the radially outer face portion by a plurality of slots.

Abstract: A system for operating a rotating component. The system includes a rotating component, a motor driving the rotating component, a sensor detecting a stimulus related to the rotating component, and a controller. The controller receives an indication of the magnitude of the stimulus from the sensor and is configured to adjust a speed of the rotating component when the stimulus indicates the rotating component is operating at a resonant frequency.

Abstract: Fastening device (1) for an armature lamella stack (2) of a DC motor, characterized in that the fastening device (1) is disposed between the armature lamella stack (2) and a shaft (3) of the DC motor and is designed as a torsionally soft connection of said armature lamella stack (2) to the shaft (3).

Abstract: An axial fan assembly includes a hub, a plurality of connection structures, and a plurality of isolated members. The hub is rotatable about an axis of rotation and includes a radially extending face and a cylindrical portion extending axially from the face. The face includes a radially inner face portion and a radially outer face portion. The plurality of connection structures extends radially inwardly from the radially outer face portion and extends radially outward from the radially inner face portion. The plurality of isolated members extends radially outwardly from the radially inner face portion and is isolated from the plurality of connection structures and from the radially outer face portion by a plurality of slots.

Abstract: A system for operating a rotating component. The system includes a rotating component, a motor driving the rotating component, a sensor detecting a stimulus related to the rotating component, and a controller. The controller receives an indication of the magnitude of the stimulus from the sensor and is configured to adjust a speed of the rotating component when the stimulus indicates the rotating component is operating at a resonant frequency.