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How do the HYDI units work?

The HYDI hydrogen on demand system supplies hydrogen gas to a diesel engine’s intake. On a mass-to-mass basis, hydrogen has three times the energy content of diesel and delivers a higher flame speed to improve combustion efficiency.  This powerful combination reduces fuel consumption, carbon and greenhouse gas exhaust emissions and increases performance.



HYDI Units do not contain or require any base chemicals, just demineralised water.


HYDI Units use the latest technology. Electronics monitor and optimise hydrogen production while Bluetooth enables the operation status to be displayed in real time.


Cutting-edge electronics allow HYDI Units to minimise the electrical input required for maximum output of hydrogen.


The effectiveness of our units has been proven over years of field trials. Independent testing at the University of South Australia is validating our results.


Sophisticated safety features ensure the HYDI Unit does not store hydrogen and only produces it while the engine is running.


Durable welded 316 stainless-steel construction ensures the HYDI Unit performs optimally in harsh environments.


A HYDI Unit offers rapid return on investment based on fuel cost savings.