Abstract: An energy management module (EMM) configured to electrically interconnect at least one first energy storage unit, at least one second energy storage unit, and a power bus; and configured to select a mode of operation. Each first energy storage unit has a first permissible charge rate; each second energy storage unit has a second permissible charge rate less than the first permissible charge rate. Under an energy storage mode of operation, the EMM is configured to allocate electrical current from the power bus among the first and second energy storage units. Under an energy balance mode of operation, the EMM is configured to transfer electrical charge among the first energy storage unit(s) and the second energy storage unit(s). Under an energy discharge mode of operation, the EMM is configured to deliver electrical current from the first and second energy storage units to the power bus.

Abstract: Silencing equipment is provided for an air-cooling assembly in a large off-road vehicle having wheels, traction motors for the wheels that operate in a motoring mode to propel the vehicle and a power generating dynamic braking mode, resistor grids for dissipating the dynamic braking power, and a blower for moving cooling air past the grids to cool them. The silencing equipment may include a resistor grid housing 24 and at least one upper inlet 22 for passing cooling air to the interior of the housing. The inlet includes noise-absorbing material. A conduit 28 is provided for directing cooling air from the upper inlet through a transition chamber to reach the blower and at least one resistor grid in the housing. The conduit is lined with noise-absorbing material. A removable cover 30 is provided for the conduit for accessing the air blower in the housing through the transition chamber, whereby servicing of the blower may be performed without removal of the entire upper inlet.