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unconventional mpg increases

Discussion in 'Technical Chat' started by ChewbacaTW, Apr 27, 2011.

  1. Apr 27, 2011 at 11:11 AM
    #1
    ChewbacaTW

    ChewbacaTW [OP] My progeny will be awesome!

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    I know all the conventional MPG increases that people use:

    Changing driving habits,
    Keeping your fluids changed,
    cleaning the air sensors,

    as well as some of the unconventional ones:

    using a power conditioner in the cigarette lighter,
    putting those magnet things on the fuel lines,

    But what about other unconventional things like heating the fuel for example?

    http://www.youtube.com/watch?v=VEiwWVY2j_8&feature=feedf
     
  2. Apr 28, 2011 at 7:05 AM
    #2
    wiscdave

    wiscdave Lets Do It!

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    AC by pass mod, shuts off the compressor when any Defrost setting is selected. Not sure that is possible in AZ during the summer, but here in WI its saved me some gas for sure..no need to run the compressor everytime the defrost is on. Give it a search its on here somewhere and very easy to do.
     
  3. Apr 28, 2011 at 9:02 AM
    #3
    96Taco

    96Taco Well-Known Member

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    ..stay tuned
     
  4. Apr 28, 2011 at 9:49 AM
    #4
    BlueT

    BlueT Well-Known Member

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    You forgot, limited slip will improve your mileage
    Using synthethic oils rated for fuel efficiency will improve MPG
    Correct tires with correct tire pressure.
    Speed and accessories mounted on the truck.
     
  5. Apr 28, 2011 at 10:06 AM
    #5
    chris4x4

    chris4x4 With sufficient thrust, pigs fly just fine. Staff Member

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    4.10 gears, sliders, and lots of buttons.

    What?:confused:
     
  6. Apr 28, 2011 at 10:22 AM
    #6
    Norcan

    Norcan What we don't have we make.

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    It should be left stock. Unless you want to buy a new compressor. The A/C system is lubricated by oil in A/C system. If you don't run the system for let's say 6 months (Oct-April) the compressor may seize. It also helps dry the air in the cabin to clear your windows faster.

    Not saying your wrong, but region you live in and replacement cost of the compressor should be considered. Toyota will not warrenty your compressor if it fails due to this mod. beware
     
  7. Apr 28, 2011 at 10:46 AM
    #7
    whippersnapper02

    whippersnapper02 Well-Known Member

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    Yeah me too. It won't though since you are just spinning more mass inside the diff but the difference probably isn't enough to do anything.
     
  8. Apr 28, 2011 at 11:16 AM
    #8
    chris4x4

    chris4x4 With sufficient thrust, pigs fly just fine. Staff Member

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    Correct. If anything, an LS diff eats a bit more fuel, as the friction plates require a little more power to turn when engaged.
     
  9. Apr 28, 2011 at 5:06 PM
    #9
    ChewbacaTW

    ChewbacaTW [OP] My progeny will be awesome!

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    I figured they were just voodoo. I only meant to use them as examples. Like another one that I heard of that I'm positive would screw up your lines is adding acetone to your gas. Again only an example but I thought maybe someone might have heard of other stuff. I started this post, merely an academic discussion.
     
  10. Apr 28, 2011 at 5:27 PM
    #10
    supralight

    supralight Well-Known Member

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    finding a way to use the exhaust heat to heat-up the intake air temperature during low-power engine operations (example: highway driving.). This would result in better vaporisation of fuel which would produce a more efficient burn. Most don't know, but lot of your fuel economy losses during winter are due to bad fuel vaporisation and NOT ethanol (and other factors too...). Ethanol content will reduce energy density of fuel by less than 5%.

    http://www.chevron.com/products/tips/fuel-school/
     
  11. Apr 29, 2011 at 3:04 AM
    #11
    ChewbacaTW

    ChewbacaTW [OP] My progeny will be awesome!

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    good suggestion... my buddy and I were discussing something that some people do with vegetable oil for biodiesel. The vege oil is too viscous so they use a contraption that cycles the engine coolant around a section of the fuel line in order to make it flow better.

    I was thinking that if you did something like that with a gasoline fuel line then it would heat the gas closer to the optimal burning temp of 350 degrees.

    I was also wondering about whether or not you'd have to start fiddling with the fuel management in the computer. If you are sufficiently heating the intake and the fuel to achieve a better combustion wouldn't you have to decrease the pressure in order to keep from getting a mixture that's too rich?
     
  12. Apr 29, 2011 at 8:24 AM
    #12
    Evil Monkey

    Evil Monkey There's an evil monkey in my truck

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    http://www.fuelsaving.info/unburnt_fuel.htm

    http://www.fuelsaving.info/atomisation.htm
     
  13. Apr 29, 2011 at 8:42 AM
    #13
    chris4x4

    chris4x4 With sufficient thrust, pigs fly just fine. Staff Member

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    So what your saying is....If they only had a system of heating the throttle body, or part throttle combustion chamber operation....wait a min!!! I belive they do! The "EGR" and the Coolant lines which heat the TB....FWIW, Fuel econ loss in the winter months is due to colder, denser air, along with fuel with less specific energy.
     
  14. Apr 29, 2011 at 9:22 AM
    #14
    ChewbacaTW

    ChewbacaTW [OP] My progeny will be awesome!

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    Why would the fuel be instantly cooled? I mean I know that it will cool if the air it hits is cooler than the fuel temperature but the idea of heating the fuel is to increase the total input temperature of the system. It won't cool as much as it would if it weren't heated and that's the point.... to make it easier for the fuel to vaporize.
     
  15. Apr 29, 2011 at 3:07 PM
    #15
    supralight

    supralight Well-Known Member

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    ok guys thanks for the heads-up. That was just an idea I though would have been good in theory.

    At least one person thought the same thing:

    http://www.metrompg.com/posts/wai-test.htm

     
  16. May 1, 2011 at 10:07 PM
    #16
    MountainEarth

    MountainEarth Well-Known Member

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    I save gas by asking my wife to get out and push
     
  17. May 15, 2011 at 4:42 PM
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    rose

    rose New Member

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    As far as shutting down the refrigeration compressor during the winter months; not the worst idea, but the compressor does need to be run once and a while "to protect the compressor shaft seal." What typically has happened in the past, is that if the compressor hasn't be run for long periods of time, the shaft seal doesn't receive lubrication, and eventually starts leaking out freon. Then when the system is out of freon, it could seez up due to possible moisture intake, but most likely the high and low cut out pressure switches will keep the compressor clutch from kicking in and running the system at all, or it will kick in and out quite rapidly.

    P.S. - Someone on the sight, helped me repair my temperature and directional read out (solder problem), and for that I am very greatful. Thank You!
     
  18. May 15, 2011 at 4:52 PM
    #18
    brannman

    brannman Well-Known Member

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    i don't see why you need a "mod" to not use the AC. just push the button and it turns off....seems simple enough to me
     
  19. May 15, 2011 at 8:11 PM
    #19
    Tacoyota

    Tacoyota senile member

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    Buy a prius , go 50 , get skinnier tires, kick the trim n rear seats out, go live on a country road with no red lights , cut a leg off to save more weight , date anhorexics, and you still wont likely break 120 mpg drafting a semi , illegally.

    Best way to save gas for me, bike to work, live closer to work for when you dont, I'm 4 miles.
    Honsetly , we pick the life we want, it costs fuel , there is only so much room to complain. If you go 80 mph on a modded truck travelling 60+ miles each way, and your wife drives the suburban..... we chose that life Its only going to get worse in the coming years as far as cost of fuels go. Miracle mpg gains , sheesh, Iv'e seen em since the 70s, I'm sure they go back to the model T, theyre not there, if they were they'd be all over google an youtube, and we would ALL have them.

    ps, there used to be motorcycle races for mph, I think the record was 500+mpg
     
  20. May 16, 2011 at 9:50 AM
    #20
    Old Soul

    Old Soul Well-Known Member

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    not to many, love it the way it is
    acetone only works to increase mpg when using non ethanol treated gasoline. This used to work but now almost all gas has ethanol in it.

    coating(or making from scratch) the entire engine and exhaust system with ceramics and using hydrogen as fuel is the wave of the future for cars.. a little electricity and water will create good burning gas(hydrogen). We just need to have some better batteries that are not heavy and last forever before hydrogen takes off. the cost of water (potable water)when this happens will be extreme no doubt..
     
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