A vehicle, which is a fuel cell vehicle, has an EV mode and an FC mode. In the EV mode, power generation by the FC stack is stopped and an electric power is supplied from a battery to a motor generator. In the FC mode, an electric power supplied from the FC stack to the motor generator is greater than an electric power supplied from the battery to the motor generator. In the EV mode, ECU controls an MID so that the MID displays the instantaneous electric power efficiency of the vehicle and does not display the instantaneous fuel efficiency of the vehicle. In the FC mode, ECU controls MID so that the MID displays the instantaneous fuel efficiency of the vehicle and does not display the instantaneous electric power efficiency of the vehicle.

A vehicle, which is a fuel cell vehicle, has an EV mode and an FC mode. In the EV mode, power generation by the FC stack is stopped and an electric power is supplied from a battery to a motor generator. In the FC mode, an electric power supplied from the FC stack to the motor generator is greater than an electric power supplied from the battery to the motor generator. In the EV mode, ECU controls an MID so that the MID displays the instantaneous electric power efficiency of the vehicle and does not display the instantaneous fuel efficiency of the vehicle. In the FC mode, ECU controls MID so that the MID displays the instantaneous fuel efficiency of the vehicle and does not display the instantaneous electric power efficiency of the vehicle.

An automotive fuel cell stack includes anodes and cathodes, and a controller that, after receiving data indicating that load current demand is within a first pre-determined range, modulates a flow rate of air to the cathodes between zero and a pre-determined value until a cell output voltage achieves a value falling within a second pre-determined range greater than zero.

An automotive fuel cell stack includes anodes and cathodes, and a controller that, after receiving data indicating that load current demand is within a first pre-determined range, modulates a flow rate of air to the cathodes between zero and a pre-determined value until a cell output voltage achieves a value falling within a second pre-determined range greater than zero.

A power transmission device for a commercial vehicle having an electric axle, may include a first differential ring gear fixedly mounted on a first rear-wheel driveshaft; a second differential ring gear mounted on a second rear-wheel driveshaft; a propeller shaft, with a first differential drive gear engaged with the first differential ring gear being connected to a front-end portion of the propeller shaft and a second differential drive gear engaged with the second differential ring gear being connected to a rear end portion thereof; a reducer connected to the first differential ring gear or the propeller shaft; and a motor, an output shaft of the motor being connected to an input gear of the reducer.

A power transmission device for a commercial vehicle having an electric axle, may include a first differential ring gear fixedly mounted on a first rear-wheel driveshaft; a second differential ring gear mounted on a second rear-wheel driveshaft; a propeller shaft, with a first differential drive gear engaged with the first differential ring gear being connected to a front-end portion of the propeller shaft and a second differential drive gear engaged with the second differential ring gear being connected to a rear end portion thereof; a reducer connected to the first differential ring gear or the propeller shaft; and a motor, an output shaft of the motor being connected to an input gear of the reducer.

A fuel cell system in which a fuel cell is coupled to a motor driving battery and a vehicular auxiliary machine is coupled to the motor driving battery via a first voltage converter, the fuel cell system including a fuel cell auxiliary machine coupled to the first voltage converter; and a second voltage converter that couples the fuel cell auxiliary machine to the fuel cell.

A fuel cell system in which a fuel cell is coupled to a motor driving battery and a vehicular auxiliary machine is coupled to the motor driving battery via a first voltage converter, the fuel cell system including a fuel cell auxiliary machine coupled to the first voltage converter; and a second voltage converter that couples the fuel cell auxiliary machine to the fuel cell.

A soil processing machine, in particular a soil compactor, comprises a machine frame and a casing (26, 28) carried on the machine frame and/or at least partially providing it and bounding a unit receptacle space (24), wherein the casing (26, 28) has a cooling air inlet area (30) and a cooling air outlet area (32) for cooling air flowing through the unit receptacle space (24), wherein a plurality of units around which cooling air can flow through the unit receptacle space (24) from the cooling air inlet area (30) to the cooling air outlet area (32) are arranged in the unit receptacle space (24), wherein at least two of the units arranged in the unit receptacle space (24) have maximum permissible operating temperatures different from one another and at least one unit having higher maximum permissible operating temperature is arranged upstream in a cooling air flow direction from the cooling air inlet area (30) to the cooling air outlet area (32) with respect to at least one unit having lower maximum permissible operating temperature.

A soil processing machine, in particular a soil compactor, comprises a machine frame and a casing (26, 28) carried on the machine frame and/or at least partially providing it and bounding a unit receptacle space (24), wherein the casing (26, 28) has a cooling air inlet area (30) and a cooling air outlet area (32) for cooling air flowing through the unit receptacle space (24), wherein a plurality of units around which cooling air can flow through the unit receptacle space (24) from the cooling air inlet area (30) to the cooling air outlet area (32) are arranged in the unit receptacle space (24), wherein at least two of the units arranged in the unit receptacle space (24) have maximum permissible operating temperatures different from one another and at least one unit having higher maximum permissible operating temperature is arranged upstream in a cooling air flow direction from the cooling air inlet area (30) to the cooling air outlet area (32) with respect to at least one unit having lower maximum permissible operating temperature.