How much engine exhaust?

Question

Let's assume: the engine is a 4 stroke 2500 cc 6 cylinder gas engine and at 60 mph, it is turning 2500 rpm's; in one minute, the engine would turn 2500 revolutions and the car would travel 1 mile. Therefore, driving one mile is equal to 2500 revolutions of the engine. Each revolution of the engine combusts 3 cylinders worth of fuel, 2 revolutions will combust all 6 cylinders. If all 6 cylinders combust, then 2500 cc's of breathable air has been turned into poisonous exhaust. If the engine converts 2500 cc's of air into exhaust every 2 rpm's, then in a mile, it will convert (2500 rpm's/2)*(2500 cc's of air) = 3,125,000 cc's, or 3,125 liters of air into exhaust every mile. If 100,000,000 cars in the U.S. drive 10 miles every day, then 3.125 trillion liters of breathable air is turned into poisonous exhaust every day.

1) How many liters of breathable air is there in the world?

2) How long can this go on before the oxygen level is so low that we all choke to death?

Answer 1

Don't forget that there is a 10:1 expansion of combustion products. Two revolutions of your gas engine will produce approximately 25,000 cc of combustion products.

Photosynthesis converts CO2 back to O2 continuously. Other combustion products are subject to secondary transformations also. Nothing is static in nature. That's the beauty of things.

Answer 2

I don't know what are you saying man!