The invention provides a range extension system including a range extension assembly, a fuel supply unit, and a second fuel storage device. The range extension assembly has a first fuel input portion and a second fuel input portion. The first fuel input portion is configured to receive a first fuel source. The second fuel input portion is configured to receive a second fuel source different from the first fuel source. The second fuel source and the first fuel source are mixed in the range extension assembly to generate an electrical output. The fuel supply unit is configured to provide the first fuel source to the first fuel input portion. The second fuel storage device is configured to store and provide the second fuel source to the second fuel input portion.

In an embodiment, an aircraft includes a fuselage; a propulsion system powered by a fuel; and a fuel cell configured to store the fuel, the fuel cell including an inner layer configured to contact the fuel; an outer layer; and a self-sealing fabric structure formed from ultra-high molecular weight polyethylene (UHMWPE), the self-sealing fabric structure being between the inner layer and the outer layer, the self-sealing fabric structure being configured to self-seal a hole formed in the inner layer and the outer layer by a projectile.

In an embodiment, an aircraft includes a fuselage; a propulsion system powered by a fuel; and a fuel cell configured to store the fuel, the fuel cell including an inner layer configured to contact the fuel; an outer layer; and a self-sealing fabric structure formed from ultra-high molecular weight polyethylene (UHMWPE), the self-sealing fabric structure being between the inner layer and the outer layer, the self-sealing fabric structure being configured to self-seal a hole formed in the inner layer and the outer layer by a projectile.

A lightweight, high power density, fault-tolerant fuel cell system, method, and apparatus for full-scale clean fuel electric-powered aircraft having a fuel cell module including a plurality of fuel cells working together to process gaseous oxygen from air compressed by turbochargers, superchargers, blowers or local oxygen supply and gaseous hydrogen from liquid hydrogen transformed by heat exchangers, with an electrical circuit configured to collect electrons from the plurality of hydrogen fuel cells to supply voltage and current to motor controllers commanded by autopilot control units configured to select and control an amount and distribution of electrical voltage and torque or current for each of the plurality of motor and propeller assemblies, wherein electrons returning from the electrical circuit combine with oxygen in the compressed air to form oxygen ions, then the protons combine with oxygen ions to form H.sub.2O molecules and heat.

The disclosure relates to a fuel cell system comprising a fuel cell stack for providing an electrical power P.sub.stack depending on a power demand, at least one auxiliary unit for operating the fuel cell stack with an electrical power consumption P.sub.aux, at least one consumer with an electrical power request P.sub.use, and a control unit for regulating the power demand as well as a method for controlling such a fuel cell system. It is provided that the control unit is configured to selectively operate the fuel cell system in a first operating mode or in a second operating mode, whereby the fuel cell stack is turned off depending on the operating mode upon the falling below of an optimal efficiency degree operating point P(η.sub.max) of the fuel cell system or a minimum operating point P.sub.min of the fuel cell stack. In particular, at least one auxiliary unit is also turned off in the first operating mode, when the optimal efficiency degree operating point decreases.

The disclosure relates to a fuel cell system comprising a fuel cell stack for providing an electrical power P.sub.stack depending on a power demand, at least one auxiliary unit for operating the fuel cell stack with an electrical power consumption P.sub.aux, at least one consumer with an electrical power request P.sub.use, and a control unit for regulating the power demand as well as a method for controlling such a fuel cell system. It is provided that the control unit is configured to selectively operate the fuel cell system in a first operating mode or in a second operating mode, whereby the fuel cell stack is turned off depending on the operating mode upon the falling below of an optimal efficiency degree operating point P(η.sub.max) of the fuel cell system or a minimum operating point P.sub.min of the fuel cell stack. In particular, at least one auxiliary unit is also turned off in the first operating mode, when the optimal efficiency degree operating point decreases.

The present disclosure relates to a thermal management system and method of adjusting and/or reversing coolant flow of a fuel cell system during stationary applications.

The present disclosure relates to a thermal management system and method of adjusting and/or reversing coolant flow of a fuel cell system during stationary applications.

A fuel cell vehicle is provided and includes a system frame on which a fuel cell is mounted and first and second side members extending in a first direction and facing each other in a second direction intersecting the first direction. A first fastening part fastens the system frame to each of the first and second side members. The system frame includes a first aperture formed therein in a horizontal direction. The first fastening part includes a first support bracket, including a second aperture, a first insertion hole, and a first tab portion extending from the first insertion hole in the horizontal direction, and a first bolt, including a first shank portion inserted into the first aperture, the second aperture, and the first insertion hole in the horizontal direction and a first threaded portion engaged with the first tab portion.

A working machine includes a vehicle body; a traveling device that supports the vehicle body; a drive that drives the traveling device; and a cabin that accommodates an operator seat. The drive has a drive motor that drives the traveling device; a fuel cell that supplies electric power to the drive motor; a controller that controls power supply from the fuel cell to the drive motor; and a hydrogen tank that supplies a hydrogen gas for fuel to the fuel cell. The hydrogen tank is disposed in an upper portion of an internal space of the cabin.