Uptake by land and ocean is constrained by the known O2: CO2 stoichiometric ratio of these processes, defining the slopes of the respective arrows. (ipcc.ch)
This not only helps to suppress catalyst deterioration, but also expands driving range at the optimum, stoichiometric air - fuel ratio. (cheersandgears.com)
The multi-hole injectors can create the ideal stoichiometric fuel / air mixture in the cylinders for good emissions control. (hondanews.com)