Systems and methods for generating hydrogen gas

A hydrogen generation system comprising:

• a first supply reservoir and a second supply reservoir respectively for first and second liquid fuel components of a fuel mixture capable of generating hydrogen via a chemical reaction;
• a reaction zone;
• a single reversible fuel delivery pump for delivering the fuel components from the first and second reservoir to the reaction zone;
• first and second conduit lines extending respectively between the first supply reservoir and the reaction zone and between the second supply reservoir and the reaction zone,
• the reversible pump being disposed between the first and second conduit lines in fluid communication therewith;
• flow control means comprising at least one valve in at least one conduit upstream of the reaction zone;
• wherein the reversible pump is co-operable with the at least one valve, the pump being operable in a first direction to pump the first fuel component from the first reservoir to the reaction zone, and operable in the reverse direction to pump the second fuel component from the second reservoir to the reaction zone;
• and
• control means for selecting a duty cycle of the reversible pump for delivering to the reaction zone first and second fuel components in desired proportions.

A pump module for a hydrogen generation system for delivering at least two liquid fuel components from first and second supply reservoirs to a reaction zone, comprising:

• first and second conduits extending from inlets for connection to the first supply reservoir and second supply reservoir, respectively, and in fluid communication with at least one outlet,
• a single reversible fuel delivery pump disposed between the first and second conduit lines in fluid communication therewith,
• flow control means comprising at least one valve,
• wherein the reversible pump is co-operable with the flow control means in a forward direction of the pump to deliver the first fuel component from the inlet from a first reservoir to the outlet, and in a reverse direction of the pump to deliver the second fuel component from the inlet from the second reservoir to the outlet;
• and
• a controller for selecting a duty cycle of the pump to deliver to the outlet a mixture of the first and second fuel components in desired proportions.