Fuel Economy, Hypermiling, EcoModding News and Forum - EcoModder.com - View Single Post - Cooled EGR vs Water Injection vs Super Lean

Isaac Zackary · 06-15-2015, 04:06 PM

Thanks for the posts! Lot's to think about. It seems that for this particular engine most see the hottest EGTs around an AFR of 15:1. They usually see quite a bit less by 16:1.

One question, will 18.4:1 AFR run as cool as 16.1:1 + 15% EGR? I mean, at that lean is EGR even necessary as the air is just as inert as the Cooled EGR gasses?

06-15-2015, 04:06 PM	#13 (permalink)
Isaac Zackary Full sized hybrid. Join Date: Apr 2015 Location: Colorado Posts: 602 Suzy - '13 Toyota Avalon Hybrid XLE 90 day: 37.18 mpg (US) Thanks: 369 Thanked 108 Times in 84 Posts	Thanks for the posts! Lot's to think about. It seems that for this particular engine most see the hottest EGTs around an AFR of 15:1. They usually see quite a bit less by 16:1. One question, will 18.4:1 AFR run as cool as 16.1:1 + 15% EGR? I mean, at that lean is EGR even necessary as the air is just as inert as the Cooled EGR gasses?