07-11-2013, 07:53 PM
No confusion, Ruan, if you burn x amount of fuel with y amount of air, the resulting combustion temperature will be cooler than if you burn x amount of fuel with 2y amount of air, assuming that y air isn't already able to burn 100% x fuel. You're getting confused and talking about injecting more fuel, rather than less air.
Fair enough Matt, sorry, thought you were disputing the physics behind it lol. To resume; if you're talking about the same amount of fuel with less air, then you get still-burning fuel going down the exhaust. The fuel itself takes some heat with it, and the heat the fuel would have produced inside the chamber gets produced in the exhaust instead, so never makes it into the coolant.
Fair enough Matt, sorry, thought you were disputing the physics behind it lol. To resume; if you're talking about the same amount of fuel with less air, then you get still-burning fuel going down the exhaust. The fuel itself takes some heat with it, and the heat the fuel would have produced inside the chamber gets produced in the exhaust instead, so never makes it into the coolant.