GreenHybrid Interactive Hybrid Car Resource
Home Discuss Articles Compare Share Shop
GreenHybrid.com   Hybrid Car Forums   Tech Information   Mileage & Specs   Photo Gallery   Buying Guide  
GreenHybrid Mileage Database - Click here to track your MPG! Join Hybrid car discussions today - Create a FREE GreenHybrid Account

Go Back   GreenHybrid - Hybrid Cars > Hybrid Topics > Fuel Economy & Emissions

Fuel Economy & Emissions Talk about the mileage database, EPA, hypermiling, gas and driving strategy.

Reply
 
Thread Tools
  #11 (permalink)  
Old 04-29-2004, 07:47 PM
Stevo12886's Avatar
Ridiculously Active Enthusiast
 
Real Name: Steven Sloan
Location: Gainesville, GA
Posts: 808
Default

i'll add one to my next project,...hows that sound?
Digg this Post!Add Post to del.icio.usBookmark Post in TechnoratiFurl this Post!
Reply With Quote
  #12 (permalink)  
Old 05-01-2004, 09:51 AM
GreenHybrid Founder
 
Real Name: Jason Siegel
Location: Houston, TX
Hybrids: 2004 Toyota Prius
Posts: 4,596
Default

*snip*

I have removed the last few posts as they steered a bit off track and I did not feel they warranted an exclusive thread. Any questions should be directed to me.

.

Read my new biweekly column, The Western Street 7.
Visit my political debate forum, Volconvo.
Digg this Post!Add Post to del.icio.usBookmark Post in TechnoratiFurl this Post!
Reply With Quote
  #13 (permalink)  
Old 05-03-2004, 09:35 AM
Enthusiast
 
Location: Arlington, VA
Posts: 13
Default

I've got to say that if someone were going to kill the inventor they really should have done it before the patent was filed.

I looked at the patent and it's pretty detailed. Someone should be able to duplicate the apparatus. I imaging there will be aspects that would not work right to begin with but it should be possible to work them out.

I also did a few calculations. I don't have time to figure them out in great detail but they should be in the ballpark of correctness.

The energy content of gasoline now (I don't know what is was back then) is about 1.213x10^6 J/gal.

If this car got 100 mi/gal over the course of a mile the gas it would use has a maximum energy content of 1.213x10^6 J/mi.

The theoretical max efficiency of a gasoline engine based upon thermodynamic considerations is about 56 % so the engine could put out a maximum of 6.72x10^5 J/mi.

The car's mass was about 1844 kg so not taking into account any other losses this energy is equivalent to the energy of getting the car up to about 60 mph. This does not include any frictional losses or hill climbing and mechanical losses and is with a very generous efficiency calculation.

It could be than I am missing some aspect that would make it possible (or maybe lots of little ones) and I don't have the time to do a more detialed calculation but it seems to me based merely on the energy content of the gasoline it would be challenging to get a car of such mass to run at 100 mpg.

Christian
Digg this Post!Add Post to del.icio.usBookmark Post in TechnoratiFurl this Post!
Reply With Quote
  #14 (permalink)  
Old 05-03-2004, 10:26 AM
tmrpro's Avatar
Enthusiast
 
Posts: 27
Default

Quote:
I also did a few calculations. I don't have time to figure them out in great detail but they should be in the ballpark of correctness.
That's very interesting, Christian.

I would suggest to include some very important variables that you neglected to consider which will make the equation far more interesting and increase the variable potential dramatically:
  • energy content of oxygen
  • rotating mass
  • inertia
  • dieseling
  • compression/heat

.

TODD MARK RUBENSTEIN
nashville record producer
The String Quartet Tributes To...
Website & Forum
Digg this Post!Add Post to del.icio.usBookmark Post in TechnoratiFurl this Post!
Reply With Quote
  #15 (permalink)  
Old 05-03-2004, 11:30 AM
efusco's Avatar
Active Enthusiast
 
Real Name: Evan Fusco
Location: Nixa, MO
Hybrids: '04 Prius/BC & '06 Highlander Hybrid Limited AWD w/NAV
Posts: 66
Default

So Todd, why hasn't someone just constructed another one of these based on the patent? Or maybe it's not reproducible...one of those frustrating things science demands as proof.

.

Evan E. Fusco, MD
'04 Prius/BC moded to the T
'06 Highlander Hybrid Limited AWD w/NAV



Digg this Post!Add Post to del.icio.usBookmark Post in TechnoratiFurl this Post!
Reply With Quote
  #16 (permalink)  
Old 05-03-2004, 12:45 PM
tmrpro's Avatar
Enthusiast
 
Posts: 27
Default

Quote:
Originally posted by efusco@May 3rd 2004 @ 1:30 PM
So Todd, why hasn't someone just constructed another one of these based on the patent? Or maybe it's not reproducible...one of those frustrating things science demands as proof.
I don't know. <_<

I wish someone would.

I'd buy it!

.

TODD MARK RUBENSTEIN
nashville record producer
The String Quartet Tributes To...
Website & Forum
Digg this Post!Add Post to del.icio.usBookmark Post in TechnoratiFurl this Post!
Reply With Quote
  #17 (permalink)  
Old 05-03-2004, 07:20 PM
Stevo12886's Avatar
Ridiculously Active Enthusiast
 
Real Name: Steven Sloan
Location: Gainesville, GA
Posts: 808
Default

maybe the engine ran on detonation as opposed to normal combustion. hmmm
Digg this Post!Add Post to del.icio.usBookmark Post in TechnoratiFurl this Post!
Reply With Quote
  #18 (permalink)  
Old 05-03-2004, 07:38 PM
xcel's Avatar
Ridiculously Active Enthusiast
 
Real Name: Wayne Gerdes
Location: Northern Illinois
Posts: 2,567
Default

Hi Stevo12886:

___Detonation needs some type of fuel as well …

___Good Luck

___Wayne R. Gerdes
___Hunt Club Farms Landscaping Ltd.
___Waynegerdes@earthlink.net

.



Digg this Post!Add Post to del.icio.usBookmark Post in TechnoratiFurl this Post!
Reply With Quote
  #19 (permalink)  
Old 05-04-2004, 12:55 PM
tmrpro's Avatar
Enthusiast
 
Posts: 27
Default

Stevo, I think you're right.

It is my understanding that timing changes were made to intentionally achieve a "dieseling state". When fuel is heated to a vapor, it is more volatile and therefore will react differently to compression.

I do not know this for sure, but I think that because of the higher fuel volatility, there would need to be a consideration made beyond ignition timing and potentially to intake/exhaust timing. In other words, actually offsetting the camshaft to retard the events and maybe even regrinding the cam to have much shorter intake durations.

.

TODD MARK RUBENSTEIN
nashville record producer
The String Quartet Tributes To...
Website & Forum
Digg this Post!Add Post to del.icio.usBookmark Post in TechnoratiFurl this Post!
Reply With Quote
  #20 (permalink)  
Old 05-04-2004, 09:16 PM
Stevo12886's Avatar
Ridiculously Active Enthusiast
 
Real Name: Steven Sloan
Location: Gainesville, GA
Posts: 808
Default

i really dont understand why more detonation engines haven't been designed and built, its a more efficient use of gasoline. there are designs in the works for detonation ramjets to be used on airliners...i think the fuel consumption would be something like 1/6 of the original if my memory serves.
Digg this Post!Add Post to del.icio.usBookmark Post in TechnoratiFurl this Post!
Reply With Quote
Reply

Thread Tools

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off

Similar Threads
Thread Topic Starter Forum Replies Last Post
113 mpg in a few years? interested? plusaf Toyota Prius 4 04-20-2006 03:11 PM
Can you solve Barlow's Quandary? rjbarlow Fuel Economy & Emissions 25 11-10-2005 05:16 AM
ACTUAL MPG versus car's MPG ?? HappyHiHy Toyota Highlander Hybrid 11 09-11-2005 12:48 AM
1,200 + miles @ 100 + mpg - Prius II Hypermiling "Marathon - Attempt" is a GO! xcel Events & Gatherings 3 08-01-2005 01:46 PM
My commute mpg and elevation ericbecky Honda Insight 2 06-15-2005 10:19 PM


All times are GMT -7. The time now is 03:41 AM.


Home | Hybrid Discussion Forums | Hybrid Articles Archive | Mileage Database | Hybrid Photo Galleries | Compare Vehicles
Terms of Service - Privacy Policy - Advertising
GreenHybrid.com, Copyright 2008
InternetBrands.com Automotive Network

SEO by vBSEO 3.2.0

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52