This Paperwill Look At The Exhaust Gas Emissions Based On A Gravimetric Analysis, From Combined Hydrogen/Dieselcombustion. Ultimately the Aim of Thisinvestigation Was to Determine If A Combination Of Hydrogen Induction And Exhaust Gas Recirculation (Egr) Could Be Used To Simultaneously Reduce The Carbon Monoxide, Total Unburnt Hydrocarbons and Nitrogen Oxidesemissions. This Being the Case, Anoperating Strategy For Each of the Investigated Speeds and Loads Has Beenproposed.