schenectady locomotive works

Fire, Frost, and Arcane. Those are the three Mage specs (specializations) in the World of Warcraft. Frost is usually employed for PvP, Arcana for mounting up big numbers against Bosses in PvE, and Fire for spreading those glorious flames all over the place (and setting up some pretty nice numbers in both PvP and PvE.) The EGR system routes a few of the exhaust gases (6 ? 10%) through the EGR valve, back in towards the Intake System, and ultimately within the combustion chamber. The exhaust gases are inert i.e. they do not burn in the combustion chamber; also, the exhaust gases undertake a few of the space which may preferably be taken with the intake air. This reduces the quantity of intake air available for the combustion process during each Power Stroke; which decreases the peak combustion temperatures. This results in lower NOx emissions.