Abstract: An operation method of a fuel cell system includes providing a turbo pump to supply an oxidant gas to a fuel cell to generate power through a reaction between a fuel gas and the oxidant gas. A branch valve to regulate a flow rate of the oxidant gas which flows through a branch passage that connects an oxidant gas supply passage and an oxidant off-gas discharge passage is provided. The turbo pump and the branch valve are controlled to regulate a flow rate of the oxidant gas to be supplied to the fuel cell in an extremely low power generation mode in which an extremely low generation power is requested. The extremely low generation power is less than or equal to a predetermined generation power corresponding to a minimum flow rate of the oxidant gas that is supplied by the turbo pump.

Abstract: A method of controlling a fuel cell system includes circulating a coolant through a fuel cell circulation passage in which a fuel cell and a gas liquid separator are provided. A valve is controlled selectively to connect or disconnect the fuel cell circulation passage and an air conditioning equipment circulation passage in which an air conditioning mechanism is provided. The valve is maintained to connect the fuel cell circulation passage and the air conditioning equipment circulation passage to circulate the coolant through the air conditioning equipment circulation passage when it is determined that the coolant includes air bubbles more than or equal to the threshold amount, when the valve connects the fuel cell circulation passage and the air conditioning equipment circulation passage, and when a temperature of the fuel cell is higher than or equal to a threshold temperature even if the air conditioning mechanism stops.

Abstract: A fuel cell vehicle includes a fuel cell, a first electric component, a second electric component, a battery, a first switch, a second switch, and circuitry. The first electric component is to operate the fuel cell. The second electric component is not to be used to operate the fuel cell. The first switch is to electrically connect the first electric component to the battery to supply electric power from the battery to the first electric component. The second switch is to electrically connect the second electric component to the battery to supply electric power from the battery to the second electric component. The circuitry is configured to control the first switch to electrically connect the first electric component to the battery and to control the second switch not to electrically connect the second electric component to the battery when the fuel cell is started.

Abstract: A fuel cell system includes first and second tanks, first and second pipes, a pipe, a first valve, a second valve, a pressure sensor, and circuitry. The first pipe is connected to the first tank. The second pipe is connected to the second tank. The pipe is connected to a fuel cell and connected to the first and second pipes to supply a reaction gas from the first and second tanks to the fuel cell. The first valve is provided at the first pipe. The second valve is provided at the second pipe. The pressure sensor is provided at the pipe between the joint point and the fuel cell. The circuitry determines whether a failure occurs in at least one of the first and second valves based on a change in the pressure detected by the pressure sensor while the first and second valves are controlled.

Abstract: In a fuel cell system, an adhesion detection apparatus for detecting adhesion of a second switching valve for a sub tank is provided. The adhesion detection apparatus opens a first switching valve and a second switching valve for switching to a double switching valve open state where a fuel cell performs power generation, and thereafter, closes the first switching valve and opens the second switching valve for switching to a second switching valve open state where the fuel cell performs power generation, and detects adhesion of the second switching valve based on a change of a detection value of a pressure sensor in the second switching valve open state.

Abstract: A method for stopping a fuel cell system includes supplying a fuel gas containing a fuel to an anode of a fuel cell which is to generate electric power. An oxidant gas containing an oxidant is supplied to a cathode of the fuel cell. A concentration of the oxidant gas in the cathode is reduced. An output voltage of the fuel cell is lowered while a slope of a change in the output voltage with respect to elapsed time is controlled such that an output current of the fuel cell has a predetermined relationship with a predetermined current reference value.

Abstract: A method for controlling a fuel cell system including a fuel cell, includes generating electric current via an electrochemical reaction between a fuel gas and an oxidant gas by the fuel cell including a solid polymer electrolyte membrane. An impedance of the fuel cell is detected. It is determined whether the impedance reaches a threshold impedance. The electric current generated by the fuel cell is increased when the impedance is determined to reach the threshold impedance.

Abstract: A tubular handlebar includes an internal peripheral surface and a stem head with a mounting system for a mobile device. The tubular handlebar includes a open end, a closed end, at least one speaker unit embedded into at least one through hole of the internal peripheral surface, and a bass reflex system to enhance the acoustic characteristics of the sound generated by the at least one speaker unit. The tubular handlebar has a sound box affixed to the internal peripheral surface of the tubular handlebar and housing a rear part of the at least one speaker unit. The bass reflex system includes a bass reflex duct connecting the sound box with the first end. The mounting system further includes a first connector to electrically connect the mobile device to a second connector. The second connector can be detached or reattached to the at least one speaker unit.

Abstract: In a case where a load amount of a load is a predetermined value or less, a control device of an FC vehicle implements extremely low current control for performing power generation at an extremely low current below a lower limit current of an FC for normal operation. At the time of implementing the extremely low current control, upper and lower limit values of a target output voltage of the converter are set in correspondence with the extremely low current, and the output voltage of the FC is controlled to be within a range between the upper and lower limit values.

Abstract: An electronic mirror apparatus includes: a display unit having a display screen, a mirror disposed over the screen, a drive mechanism for changing an angle of the mirror, and a controller. The controller is electrically coupled with the display unit, the drive mechanism, an illuminance sensor for monitoring illuminance of light incident from a vehicle's rearward direction, and a camera for shooting a rearward view. The controller, when the display unit is OFF and the vehicle is in a dark environment, monitors the illuminance of the light incident from the rearward direction, based on an output of the sensor. The controller, when the illuminance of the light becomes equal to or larger than a threshold value, instructs the drive mechanism to adjust the angle of the mirror to an antiglare angle and instructs the display unit to display an image that is shot by the camera and regulated in luminance.

Abstract: A fuel cell system includes an ECU that sets the fuel cell stack to a state of idling stop by lowering both a revolution speed of an air pump and a discharge current value of the fuel cell stack to less than during idling power generation within a range larger than 0, in response to a predetermined idling stop initiation condition having been satisfied during idling power generation. The ECU decreases the discharge current value further as the lowest cell voltage value CV_low of the fuel cell stack decreases so that the lowest cell voltage value CV_low does not fall below a cancellation threshold B, with an event of the lowest cell voltage CV_low of the fuel cell stack having fallen below the cancellation threshold B as a cancellation condition of idling stop.

Abstract: A receiving device associates a first one-way function value determined by an operation using a one-way function with a first destination. Next, the receiving device determines a second one-way function value by the operation using the one-way function from identification information stored in the receiving device and element information received from a transmitting device. When the second one-way function value is different from the first one-way function value, the receiving device associates the second one-way function value with a second destination, and returns the identification information to the transmitting device.

Abstract: A communication apparatus includes a memory that stores data transmitted using a protocol that a transmission source receives a response indicating a reception status of data and transmits or retransmits the data based on the response, a transmitter that transfers the data stored in the memory to a transfer destination, and a controller that inhibits transmission of the response transmitted to the transmission source when a value pertaining to the data transfer to the transfer destination becomes a given range.

Abstract: A fuel cell system that can quickly transition to idling stop and can suppress degradation of the electrolyte membrane and decline in cell voltage during idling stop, without requiring a discharge resistor to be provided, and a control method thereof are provided. A fuel cell system (1) includes a fuel cell (10) configured by layering a plurality of fuel cell cells that generate power by reactant gas being supplied thereto, and a supply device 20 that supplies reactant gas to the fuel cell (10), in which idling stop control is initiated to supply air of a lower flow rate than during idling power generation to the fuel cell (10), while producing lower current than during idling power generation from the fuel cell (10), in a case of a predetermined condition being established during idling power generation.

Abstract: A tubular handlebar includes an internal peripheral surface and a stem head with a mounting system for a mobile device. The tubular handlebar includes a open end, a closed end, at least one speaker unit embedded into at least one through hole of the internal peripheral surface, and a bass reflex system to enhance the acoustic characteristics of the sound generated by the at least one speaker unit. The tubular handlebar has a sound box affixed to the internal peripheral surface of the tubular handlebar and housing a rear part of the at least one speaker unit. The bass reflex system includes a bass reflex duct connecting the sound box with the first end. The mounting system further includes a first connector to electrically connect the mobile device to a second connector. The second connector can be detached or reattached to the at least one speaker unit.

Abstract: A fuel cell system calculates amount of fluid discharged from a fuel gas circulation path with water and fuel gas in accordance with an ordinary process map if inside an anode is not scavenged when a fuel cell stops electrochemical reaction; measures amount of water remaining in a fuel gas circulation path in accordance with cumulative electricity output, temperature, or elapsed time after starting the electrochemical reaction if the inside the anode is scavenged previously; and determines whether the inside the fuel gas circulation path is in dry condition or humid condition. The fuel cell system calculates amount of fluid discharged from the fuel gas circulation path with water or the fuel gas in accordance with a map predetermined for the dry condition if the fuel cell system determines that the inside the fuel gas circulation path is in the dry condition.

Abstract: A method for stopping a fuel cell system includes supplying a fuel gas containing a fuel to an anode of a fuel cell which is to generate electric power. An oxidant gas containing an oxidant is supplied to a cathode of the fuel cell. A concentration of the oxidant gas in the cathode is reduced. An output voltage of the fuel cell is lowered while a slope of a change in the output voltage with respect to elapsed time is controlled such that an output current of the fuel cell has a predetermined relationship with a predetermined current reference value.

Abstract: An operation method of a fuel cell system includes providing a turbo pump to supply an oxidant gas to a fuel cell to generate power through a reaction between a fuel gas and the oxidant gas. A branch valve to regulate a flow rate of the oxidant gas which flows through a branch passage that connects an oxidant gas supply passage and an oxidant off-gas discharge passage is provided. The turbo pump and the branch valve are controlled to regulate a flow rate of the oxidant gas to be supplied to the fuel cell in an extremely low power generation mode in which an extremely low generation power is requested. The extremely low generation power is less than or equal to a predetermined generation power corresponding to a minimum flow rate of the oxidant gas that is supplied by the turbo pump.

Abstract: A fuel cell device is equipped with an ECU 60 which executes a start-up control of a fuel cell stack 20, and executes a normal electric distribution control, after completion of the start-up control, for controlling a supply flow rate of a fuel gas to an anode electrode and a supply flow rate of an oxidant gas to a cathode electrode, so that a predetermined target current is supplied from the fuel cell stack 20 to an electric load 31. The ECU 60 makes a current adjustment element 30 to be in a state where a current larger than a minimum current necessary for the fuel cell stack 20 in the normal electric distribution control is supplied from the fuel cell stack 20 to the electric load 31, in the start-up control, during the period from starting of the supply of hydrogen to the anode electrode 22 until a gas channel of the anode electrode 22 is filled with hydrogen.