Go Back   EcoModder Forum > EcoModding > Fossil Fuel Free
Register Now
 Register Now

Reply  Post New Thread
Submit Tools LinkBack Thread Tools
Old 08-12-2012, 12:36 AM   #11 (permalink)
Master EcoModder
Join Date: Sep 2010
Location: Saskatoon, canada
Posts: 1,483

ChargE (not yet running) - '92 Mazda MX6 LX
90 day: 33.89 mpg (US)

Ford Prefect - '18 Ford F150 XLT XTR
Thanks: 747
Thanked 562 Times in 445 Posts

Originally Posted by JRMichler View Post
...a patent means only that nobody else did it first..
I guess I knew that at some level (not a conscious level, obviously)

Isn't a patent a lot of work and effort to go through before you test that it works? I guess I made some assumptions when the posting included a few numbers.

  Reply With Quote
Alt Today
Popular topics

Other popular topics in this forum...

Old 08-12-2012, 05:32 PM   #12 (permalink)
Master EcoModder
JRMichler's Avatar
Join Date: Feb 2011
Location: Phillips, WI
Posts: 998

Nameless - '06 GMC Canyon
90 day: 37.45 mpg (US)

22 Maverick - '22 Ford Maverick XL
90 day: 50.35 mpg (US)
Thanks: 188
Thanked 445 Times in 277 Posts
A cellular air tank has theoretical safety and reliability advantages. Real world complications include the safety and reliability disadvantages of the valves and plumbing. The system design MUST include provisions for dealing with the failure of any component, including the fact that valves can fail fully open, fully closed, or stuck partway.

An efficient air motor for use with a high pressure air system would need both variable displacement and variable expansion ratio. The displacement would need to be variable from near zero for low power output with the air tank fully charged to large enough to get rated power with the air tank at minimum pressure.

The efficient air motor expansion ratio would be 300:1 for an air tank charge to 4500 PSI, and variable down to 8:1 when the air tank is discharged down to 100 PSI.

And the efficient air motor would need to use isothermal expansion, requiring an external source of heat.

And that is a few of the reasons why nobody has succeeded in building a practical air car.

06 Canyon: The vacuum gauge plus wheel covers helped increase summer 2015 mileage to 38.5 MPG, while summer 2016 mileage was 38.6 MPG without the wheel covers. Drove 33,021 miles 2016-2018 at 35.00 MPG.

22 Maverick: TBD
  Reply With Quote
Reply  Post New Thread

Thread Tools

Powered by vBulletin® Version 3.8.11
Copyright ©2000 - 2022, vBulletin Solutions Inc.
Content Relevant URLs by vBSEO 3.5.2
All content copyright EcoModder.com