So just like waterinjection...
Aren't people already making their own HHO devices at home?
William Lowndes
Professor Sam DeMaria pioneered this at The University of South Australia back in the late ‘80s. E2RG!
It saves fuel and cuts emissions-great! The next step is using hydrogen in fuel cells to power big rigs,which will eliminate emissions entirely,assuming the H2 is made from renewables. H2 will never work for private autos,but will have a bright future powering heavy equipment,trains,ships and aircraft. There is already a flying taxi in development powered by cryogenic H2 with a range of 400 miles and refueling time of a few minutes: https://newatlas.com/alakai-skai-hydrogen-vtol-air-taxi/59911/
"directly injects it into the air-fuel mixture just before the combustion stage"

This is not how diesels work.
if this works, it could essentially put us back where we thought we were before the Dieselgate fiasco. Cutting particulates on diesels is particularly good, because those cause all kinds of illness.
Seems like a no brainer for ships.
Adrian Akau
There are some methods of electrolysis (using pulsed current) that are supposed to make electrolysis energy efficient. It is not stated in the article if the electrolysis is with DC or pulsed DC from a patented design.
No, pulsed current does not make electrolysis efficient absent a particular material deficiency whose counterreaction can be avoided by changing the current. This looks pretty great for heavy not-diesel trucks...I guess?
Sorry, but I'm obviously missing something, here. The power for making the H2 comes from the alternator. The alternator is powered from the engine and the engine gets it source of energy from fossil fuel (diesel). Over-unity, anyone? I cannot see how this can be saving fuel, given that the process of making H2 and then burning it is only about 25% efficient. I could be convinced that - in some whacky magical way (or maybe it's just chemistry) - the addition of H2 to the combustion process could improve emissions but saving fuel? Nah!