When i look at the maps and i see the pKa column i feel a bit dazzled when i try to apply that to the boost/vaccum figures i see on the gauge.
I understand that 200pKa = 1bar absolute(gauge reading)
Can someone please give me the pKa readings for vaccum though?
on the map i have 30,46,56,80pka and i want to know how that resembles the vaccum readings i get when on idle/cruise so that i can deal with idle VE table settings as well as fueling under cruising speeds.
thanks
vasilis
1bar = 14.7psi = 100Kpa ~ 1013mbar
Kpa´s are ratios basically of 1bar.
50Kpa is half a bar and so on.
i realise that half a bar is 50pKa BUT what happens with vaccum which in gauge terms is -0.5bar etc?
Is it : 20pKa=100-80, therefore -0.8bar(in gauge terms)?
i think something like that was sort of an explanation in wiki.
otherwise,how is the map table done on vaccum conditions?
it should be something like:
pKa vs vacuum
30 = -0.7
46 = -0.64
56 = -0.46
80 = -0.2
100 = 0
Quote from: gunni on May 04, 2009, 11:08:53 PM
1bar = 14.7psi = 100Kpa ~ 1013mbar
Kpa´s are ratios basically of 1bar.
50Kpa is half a bar and so on.
Just to be precise: 1bar = 14.50...psi = 100Kpa= 1000mbar
Quote from: A80Avant on May 04, 2009, 11:18:09 PM
i realise that half a bar is 50pKa BUT what happens with vaccum which in gauge terms is -0.5bar etc?
Is it : 20pKa=100-80, therefore -0.8bar(in gauge terms)?
i think something like that was sort of an explanation in wiki.
otherwise,how is the map table done on vaccum conditions?
it should be something like:
pKa vs vacuum
30 = -0.7
46 = -0.64
56 = -0.46
80 = -0.2
100 = 0
100kpa is 0kpa gauge pressure.
So 50kpa is 0.5bar vacuum
And the tables are based on absolute pressure.