Go Back   EcoModder Forum > EcoModding > Hybrids
Register Now
 Register Now

Reply  Post New Thread
Submit Tools LinkBack Thread Tools
Old 04-24-2011, 02:11 PM   #1 (permalink)
EcoModding Lurker
Join Date: Aug 2010
Location: Wisconsin
Posts: 45

Slowpoke - '00 Hyundai Sonata GLS
90 day: 32.82 mpg (US)
Thanks: 25
Thanked 0 Times in 0 Posts
Lightbulb cryo-ICE hybrid

Hey just had an idea come across my mind. How practical would it be to have a small Liquid nitrogen engine that uses internal combustion engine waste heat to run in a hybrid setup?

Since the liquid nitrogen engine is essentially a cooling source for the ICE you could even do a radiator delete yielding weight reduction (maybe not net though). You could insulate the engine bay so it could work in wintertime too.

I could also see the LN2 engine perhaps charging a gas-electric hybrid battery. LN2 is about 6 cents (US) per liter in truckload quantities making it pretty cheap. Idk if this is offset by its low energy density... even about 30 times less energy density than gasoline that comes to about $1.80 to get the same potential energy (efficiency may be a problem).

Seems like an obvious synergistic fit to me, but I haven't seen any examples of this online yet. would too much cooling from the ln2 reduct the ICE efficiency? Am I ignoring basic laws of thermodynamics here? Thoughts?


Slowly modding my 2000 sonata to what it should be... one project at a time.
  Reply With Quote
Alt Today
Popular topics

Other popular topics in this forum...

Old 04-26-2011, 01:52 PM   #2 (permalink)
Master EcoModder
Phantom's Avatar
Join Date: Jan 2010
Location: Independence, KY
Posts: 602

Blue Meanie - '02 Volkswagon Golf TDI
90 day: 48.52 mpg (US)

Wife's car - '05 WV Passat TDI

Rudy - '94 Chevy C2500
Thanks: 89
Thanked 46 Times in 43 Posts
The super cooling of the engine would hurt efficiency and you would have to watch for the change in volume from the expansion of the liquid to gas.
I move at the speed of awesome.

"It's not rocket surgery!" -MetroMPG
  Reply With Quote
Old 05-20-2014, 01:56 PM   #3 (permalink)
EcoModding Lurker
Join Date: Dec 2012
Location: Phoenix, AZ
Posts: 6
Thanks: 4
Thanked 0 Times in 0 Posts
It would also be range limited by the nitrogen, you'd have a real nightmare on your hands when you ran out of coolant, but one idea to save this would be that if you had a cryogenic primary fuel such as natural gas, you could use a radiator coil and a fan as the gas travels to the injection point (or carb whichever fuel delivery mechanism you prefer) and you have AC when you need it. just have to have something to keep the coils from icing over unacceptably.

  Reply With Quote
Reply  Post New Thread

cryo, hybrid, ice, liquid nitrogen

Thread Tools

Powered by vBulletin® Version 3.8.11
Copyright ©2000 - 2021, vBulletin Solutions Inc.
Content Relevant URLs by vBSEO 3.5.2
All content copyright EcoModder.com