From maths point of view, I agree!gruntguru wrote: ↑Thu Nov 04, 2021 12:22 amTommy is not confused. The percentage is not the correct term for specifying the number of molecules or grams of oxygen in a given volume of air. The percentage is a dimensionless term ie g/100g or L/100L.atanatizante wrote: ↑Wed Nov 03, 2021 8:59 pmI think you confused volume percentage within a gases composition with mass percentage due to altitude/pressure ...Tommy Cookers wrote: ↑Wed Nov 03, 2021 5:51 pmyes a cubic metre of MC air contains 212 gm of oxygen (77% of the sea level amount)
Indeed, both at sea level and altitude we have the same 20.947 volume % of O2 in 1 cubic meter of air, as you correct above stated. But this volume weights differently at different altitudes/pressures due to the ideal gas law: pV=nRT. Thus, at the same volume when pressure lowers due to altitude we have fewer molecules so less mass or weight of O2 as Mattchu said in another post above ...
Anyway, no one has an idea how the ICE would cope with the new air intake plenum here in Mexico, bearing in mind it was designed to provide cooler air hence feeding more O2 for the engine?
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I don`t follow you here and maybe the reason for that is due to English is not my native language. So be kind to me, will you?
I would like you to be more detailed about this matter... because from what you are stating, I understand that what do you gain at sea level (x%), the same percentage you should lose at altitude regardless of which high is/air pressure is? And, had I`m not wrong, I don`t think it`s correct from the physics perspective ...