Control system for fuel cell watercraft

Abstract

There is provided a control system for a fuel cell watercraft without the need for a heater for low-temperature start-up or a switching valve to a bypass channel. In the control system for a fuel cell watercraft, the fuel cell watercraft includes: a seawater line and a seawater pump for taking in seawater from outside of the hull; a coolant line and a coolant pump for circulation of coolant between a heat exchanger on the seawater line and a fuel cell module; a battery adapted to be charged with electric power generated by the fuel cell module and to supply the electric power to the electric motor and the fuel cell module auxiliaries including the seawater pump and the coolant pump. The control system is configured to execute a start-up routine including starting the seawater pump and the coolant pump at a time of start-up, stopping the seawater pump and starting the fuel cell module when coolant temperature reaches seawater temperature or more, and restarting the seawater pump when the coolant temperature reaches steady-state operating temperature of the fuel cell module.

Dependencies are inferred from the claim text.