(EP842548-A1)      The temperature regulating system includes an electric motor (15) for driving wheels (20) of the vehicle which is powered from the fuel cell stack (30) e.g. via a DC-DC booster or DC-AC inverter (40). At least one conduit external to the fuel cell stack defines a coolant medium path (55) from at least one coolant outlet port to at least one coolant inlet port of the fuel cell stack.    The resistor (70) in a sealed resistor housing (75) having a coolant inlet and outlet, is in communication with the cooling medium for heating it. The resistor is connected to a source of power such as electric power comprising regenerative electrical power derived from regenerative braking of the vehicle, shore electric power and fuel cell stack generated electric power. A cooling pump and radiator and disposed in the coolant path, with a fan generating air flow over the radiator. Hydrogen and air supply systems are included for generating electric power in the fuel cell stack.    ADVANTAGE -   Helps maintain temp. of fuel cell stack within range for satisfactory cell performance. Resistor acts as bleed resistor at shut down by consuming reactants remaining in fuel cell stack to lower stack voltage and leave it in electrically safe state.    (EP842548-B1)      The temperature regulating system includes an electric motor (15) for driving wheels (20) of the vehicle which is powered from the fuel cell stack (30) e.g. via a DC-DC booster or DC-AC inverter (40). At least one conduit external to the fuel cell stack defines a coolant medium path (55) from at least one coolant outlet port to at least one coolant inlet port of the fuel cell stack.    The resistor (70) in a sealed resistor housing (75) having a coolant inlet and outlet, is in communication with the cooling medium for heating it. The resistor is connected to a source of power such as electric power comprising regenerative electrical power derived from regenerative braking of the vehicle, shore electric power and fuel cell stack generated electric power. A cooling pump and radiator and disposed in the coolant path, with a fan generating air flow over the radiator. Hydrogen and air supply systems are included for generating electric power in the fuel cell stack.    ADVANTAGE -   Helps maintain temp. of fuel cell stack within range for satisfactory cell performance. Resistor acts as bleed resistor at shut down by consuming reactants remaining in fuel cell stack to lower stack voltage and leave it in electrically safe state.    (DE29623879-U1)      The temperature regulating system includes an electric motor (15) for driving wheels (20) of the vehicle which is powered from the fuel cell stack (30) e.g. via a DC-DC booster or DC-AC inverter (40). At least one conduit external to the fuel cell stack defines a coolant medium path (55) from at least one coolant outlet port to at least one coolant inlet port of the fuel cell stack.    The resistor (70) in a sealed resistor housing (75) having a coolant inlet and outlet, is in communication with the cooling medium for heating it. The resistor is connected to a source of power such as electric power comprising regenerative electrical power derived from regenerative braking of the vehicle, shore electric power and fuel cell stack generated electric power. A cooling pump and radiator and disposed in the coolant path, with a fan generating air flow over the radiator. Hydrogen and air supply systems are included for generating electric power in the fuel cell stack.    ADVANTAGE -   Helps maintain temp. of fuel cell stack within range for satisfactory cell performance. Resistor acts as bleed resistor at shut down by consuming reactants remaining in fuel cell stack to lower stack voltage and leave it in electrically safe state.    (US6186254-B1)      The temperature regulating system includes an electric motor (15) for driving wheels (20) of the vehicle which is powered from the fuel cell stack (30) e.g. via a DC-DC booster or DC-AC inverter (40). At least one conduit external to the fuel cell stack defines a coolant medium path (55) from at least one coolant outlet port to at least one coolant inlet port of the fuel cell stack.    The resistor (70) in a sealed resistor housing (75) having a coolant inlet and outlet, is in communication with the cooling medium for heating it. The resistor is connected to a source of power such as electric power comprising regenerative electrical power derived from regenerative braking of the vehicle, shore electric power and fuel cell stack generated electric power. A cooling pump and radiator and disposed in the coolant path, with a fan generating air flow over the radiator. Hydrogen and air supply systems are included for generating electric power in the fuel cell stack.    ADVANTAGE -   Helps maintain temp. of fuel cell stack within range for satisfactory cell performance. Resistor acts as bleed resistor at shut down by consuming reactants remaining in fuel cell stack to lower stack voltage and leave it in electrically safe state.