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Old 02-28-2021, 11:32 PM   #13 (permalink)
Isaac Zachary
High Altitude Hybrid
 
Join Date: Dec 2020
Location: Gunnison, CO
Posts: 330

Avalon - '13 Toyota Avalon HV
90 day: 37.6 mpg (US)

Prius - '06 Toyota Prius
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Quote:
Originally Posted by cRiPpLe_rOoStEr View Post
Why would anyone be willing to add more COČ than what an EGR already does?
My idea was to completely replace nitrogen based air with CO2 in order to completely eliminate NOx emissions.

The idea goes like this.
  1. Feed CO2 (and water vapor) into the intake.
  2. Add oxygen and fuel. (The hard part is getting pure oxygen efficiently to make up about 20% of the mix)
  3. Burn in a traditional gasoline or diesel style combustion cycle.
  4. Take exhaust and cool it, remove liquid water.
  5. Feed cooled exhaust (now mostly CO2 and water vapor) back into the intake for an unlimited supply of CO2.

The theoretical result being able to run as high CR, lean bien, timing advance, etc, as possible without having to worry about NOx emissions.
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