In colder climates air is more dense, therefore more air enters into the combustion chamber by volume, hence more fuel is needed to maintain the stoichiometric ratio and prevent burned valves. Is it safe to say then that in colder climates a vehicle's fuel economy is worse than in warmer climates? If this is true then the fuel economy will degrade even further with any sort of forced induction?
Lower temperature and atmospheric pressure definitely increase power because the engine has a higher mass air to burn.
But on spark ignition engine the volume (and therefore mass) of air entering the cylinders is controlled by the throttle butterfly It is like turbo charging the fuel consumption will only increase if you use the extra power.
" We're trying to plug a hole in the universe, what are you doing ?. "
(Walter Bishop Fringe TV show)
Lower temperature and atmospheric pressure definitely increase power because the engine has a higher mass air to burn.
But on spark ignition engine the volume (and therefore mass) of air entering the cylinders is controlled by the throttle butterfly It is like turbo charging the fuel consumption will only increase if you use the extra power.
" We're trying to plug a hole in the universe, what are you doing ?. "
(Walter Bishop Fringe TV show)
