A saddle-ride type vehicle includes a vehicle body frame steerably supporting a front fork by a head pipe and swingably supporting a rear wheel unit around a pivot, an air-cooled type fuel cell unit supported by the vehicle body frame on a rear side of the head pipe and including an outside air intake port facing forward, and a vehicle body cover defining a front of an intake air space that is connected to the intake port. The vehicle body cover includes a traveling air passage changing a direction of traveling air that flows in from a front. Accordingly, it is possible to efficiently supply traveling air to a fuel cell unit that includes a fuel cell.

There is provided a fuel cell system that generates an electric power by supplying an anode gas and a cathode gas to a fuel cell. The fuel cell system includes: auxiliary machines and a drive motor driven by the generated electric power of the fuel cell; a pressure control unit configured to control a pressure of the cathode gas to be supplied to the fuel cell at a normal target pressure, the normal target pressure being used for ensuring an oxygen partial pressure within the fuel cell in accordance with the generated electric power of the fuel cell; and a warming-up pressure control unit configured to control the pressure of the cathode gas to be supplied to the fuel cell to become a predetermined warm-up acceleration target pressure during warm-up of the fuel cell, the predetermined warm-up acceleration target pressure being higher than the normal target pressure. In a case where there is a request to drive the drive motor during the warm-up of the fuel cell, the warming-up pressure control unit controls the pressure of the cathode gas to be supplied to the fuel cell to a warm-up target pressure between the normal target pressure and the warm-up acceleration target pressure.

A fuel cell oxygen delivery system, method, and apparatus for full-scale clean fuel electric-powered vehicle having a fuel cell module including a plurality of fuel cells working together that augments gaseous oxygen from ambient air and gaseous hydrogen extracted from liquid hydrogen by pressure change or heat exchangers, with fuel cells containing electrical circuits configured to collect electrons from the plurality of hydrogen fuel cells to supply voltage and current to motor controllers commanded by control units configured to control an amount and distribution of electrical voltage and torque or current for each of one or more motor and propeller or rotor assembly, wherein electrons returning from the electrical circuits combine with both oxygen derived from air and onboard oxygen from the delivery system to form oxygen ions, then protons combine with oxygen ions to form H.sub.2O molecules and heat.

A fuel cell oxygen delivery system, method, and apparatus for full-scale clean fuel electric-powered vehicle having a fuel cell module including a plurality of fuel cells working together that augments gaseous oxygen from ambient air and gaseous hydrogen extracted from liquid hydrogen by pressure change or heat exchangers, with fuel cells containing electrical circuits configured to collect electrons from the plurality of hydrogen fuel cells to supply voltage and current to motor controllers commanded by control units configured to control an amount and distribution of electrical voltage and torque or current for each of one or more motor and propeller or rotor assembly, wherein electrons returning from the electrical circuits combine with both oxygen derived from air and onboard oxygen from the delivery system to form oxygen ions, then protons combine with oxygen ions to form H.sub.2O molecules and heat.

A motor-driven compressor is installed in a fuel cell vehicle to supply air to a fuel cell. The motor driven compressor includes a rotation shaft, an electric motor, a compression unit that compresses air, a housing that includes a motor chamber and a compression chamber, and a seal member that restricts a flow of a fluid between the motor chamber and the compression chamber. The housing includes an inlet and an outlet. The inlet draws, into the motor chamber, the air-conditioning refrigerant that has passed through the evaporator but has not reached the air-conditioning compressor as a low-temperature refrigerant. The outlet discharges the low-temperature refrigerant, which is drawn from the inlet into the motor chamber, out of the motor chamber.

A device unit is provided with a first heating element, a second heating element configured to generate a heat in an amount smaller than that generated by the first heating element, and a cooler located between the first heating element and the second heating element. The cooler has a coolant flow passage through which a coolant flows, and cooling fins disposed on a first heating element side in the coolant flow passage in a manner as to be substantially in parallel with a flow direction of the coolant, and a fluid resistance of the coolant in the coolant flow passage is smaller on a second heating element side than on the first heating element side.

A reactor unit includes reactors; and a cooler. The reactors are disposed in at least one line on a reactor cooling surface that is one of outer surfaces of the cooler. The cooler has a cooling medium flow passage that is in contact with an inner surface on a reverse side of the reactor cooling surface. The cooling medium flows linearly from an inlet portion to an outlet portion of the cooling medium flow passage. A direction in which the cooling medium flows inside the cooling medium flow passage is same as a direction in which the reactors are disposed in the at least one line. Cooling fins are provided on the inner surface on the reverse side of the reactor cooling surface. A longitudinal direction of each cooling fin is same as the direction in which the cooling medium flows inside the cooling medium flow passage.

A fuel cell vehicle includes a lid, a switch, a sensor, and circuitry. The lid opens and closes a fuel inlet through which fuel gas is to be supplied to a tank. The switch takes an opening position to open the lid and a closing position to close the lid. The sensor detects whether the lid opens or closes the fuel inlet. The circuitry is configured to prohibit the fuel cell vehicle from travelling when the sensor detects that the lid opens the fuel inlet while the switch takes the opening position.

A cooling system for a vehicular fuel cell utilizes packet pumps to electrically isolate the fuel from a grounded radiator. Fluid in a packet pump is transported from an inlet port to an outlet port in discrete packets. Because these packets are physically separated from one another, electricity does not flow through the fluid from the inlet port to the outlet port. Packet pumps include peristaltic pumps and external gear pumps.

The invention relates to a method for operating a fuel cell system (10) using a first operating mode, in which, when all of the fuel cell stacks (22, 26) are inactive, one fuel cell stack (22) is pre-heated using a coolant that is pre-heated by means of an electric heater (42) while bypassing all cooler circuits (58) of the active coolant circuits (14) via bypass lines (64) and the one pre-heated fuel cell stack (22) is activated in order to pre-heat an additional fuel cell stack (26) of the fuel cell system. Other operating modes for operating a fuel cell system are disclosed in additional embodiments.