You getting bored Tech ?



Had a look at the site, takes a bit of working out, as I want to figure out the cylinder pressure for a supercharged engine I punched in an altitude of minus -1000 meters, only trouble is, is that I have to figure out what the air pressure is 1000 meters down ?

I figure it like this atmospheric pressure at sea level is 14.7 lbs/inch squared or 1 atmosphere so if we had a boost of 7 lbs it would be approx 1.5 atmospheres. But there must be a formula lying around somewhere to figure increases of air pressure below sea level so that I can get a reasonably accurate boost pressure and air temp in the cylinders