PSA Citroën patent number FR2880657 entitled “Exhaust gas recirculation circuit” (with reformer and hydrogen injection to promote combustion)
(…) It has been shown that adding a gas rich in hydrogen (H2) to the combustion chamber intake manifold, during recirculation of the exhaust gases, makes it possible to reduce hydrocarbon emissions. unburnt (HC), carbon monoxide (CO) and soot.
The power output of the engine is thus improved while limiting the emissions of carbon products.
In a manner known per se, the reforming of fuel is obtained by reacting fuel molecules with water and / or air to produce hydrogen according to the following chemical reactions ...
The following in the document.
Read more and debate: injection of hydrogen into the fuel