Science > Physics > Slick Surfaces: Pressure builds to make better motor oils
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Science > Physics |
| User: |
"Sam Wormley" |
| Date: |
12 Mar 2005 06:08:44 AM |
| Object: |
Slick Surfaces: Pressure builds to make better motor oils |
[Materials Science]
Slick Surfaces: Pressure builds to make better motor oils
Motor oil's protection against the wear and tear of steel
engine parts takes effect only at high pressures.
http://www.sciencenews.org/articles/20050312/fob6.asp
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| User: "Uncle Al" |
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| Title: Re: Slick Surfaces: Pressure builds to make better motor oils |
12 Mar 2005 12:01:45 PM |
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Sam Wormley wrote:
[Materials Science]
Slick Surfaces: Pressure builds to make better motor oils
Motor oil's protection against the wear and tear of steel
engine parts takes effect only at high pressures.
http://www.sciencenews.org/articles/20050312/fob6.asp
Line the aluminum black with steel sleeves.
--
Uncle Al
http://www.mazepath.com/uncleal/
(Toxic URL! Unsafe for children and most mammals)
http://www.mazepath.com/uncleal/qz.pdf
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| User: "tj Frazir" |
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| Title: Re: Slick Surfaces: Pressure builds to make better motor oils |
14 Mar 2005 06:24:04 PM |
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Build a bigger motor and run it slow stupid.
That way the oil is OK . Its that biuld a small cheep fast rpm engine
that has lube problems.
You use more fuel in the small fast engine and waist more heat.
Then as the engine is smaller and HP higher then a bushing is smaller
and has more force per berring aria and till wear out faster.
Don't blaim your small fast shotty engineering on the oil.
If they make the oil then thats all you an use because they will
makethe engine so fragel other oil would blow it up.
Biuld big slow engines that run 10 times longer and the oil neads no
additives.
Then the seals will last .
The slicker the oil the sooner you nead seals.
I hate to tear a good engine down just to put seals in the fucker
because oil additives ate the fuckers.
I ran a mack ship 2500 kw for 10 years and 2 gen sets 250 hp. rebiult
it once and ran it for 10 years 24 hours a day .
I know a bunch about oil too.
dont put a mulible grade in any tractor.
run strate 30 or 40.
let the sluge in our engine sleep.
You dump the wrong ***** in and tat slug will mix with your oil and plug
up the crank .
acid will eat the additivves and I use a tea spoon of baking soada
in a cap full of 2 cycle oil and out it in the block with non detugent
oil and never have slug and my seals are clean and normal.
Blowby in your car is normal and acid eats additives. Then its slug
waiting to plug up the crank.
250 rpm service speed and 35 rpm dead slow because a smaller engine
at 2500 rpm would not last long.
I likethe sound of a diesel at 109 rpm .
whats your pults ?
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| User: "Andy Resnick" |
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| Title: Re: Slick Surfaces: Pressure builds to make better motor oils |
14 Mar 2005 08:00:05 AM |
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Sam Wormley wrote:
[Materials Science]
Slick Surfaces: Pressure builds to make better motor oils
Motor oil's protection against the wear and tear of steel
engine parts takes effect only at high pressures.
http://www.sciencenews.org/articles/20050312/fob6.asp
It is unclear from the article- what is the actual pressure environment
inside the piston? I'd be surprised if it got near 17 GP, or 7 GP.
--
Andrew Resnick, Ph.D.
Department of Physiology and Biophysics
Case Western Reserve University
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| User: "" |
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| Title: Re: Slick Surfaces: Pressure builds to make better motor oils |
14 Mar 2005 02:32:06 PM |
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In article <d145dc$6f4$1@eeyore.INS.cwru.edu>, Andy Resnick <andy.resnick@op.case.edu> writes:
Sam Wormley wrote:
[Materials Science]
Slick Surfaces: Pressure builds to make better motor oils
Motor oil's protection against the wear and tear of steel
engine parts takes effect only at high pressures.
http://www.sciencenews.org/articles/20050312/fob6.asp
It is unclear from the article- what is the actual pressure environment
inside the piston? I'd be surprised if it got near 17 GP, or 7 GP.
A car piston? I would be surprised if it got higher then few MP.
Mati Meron | "When you argue with a fool,
meron@cars.uchicago.edu | chances are he is doing just the same"
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| User: "" |
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| Title: Re: Slick Surfaces: Pressure builds to make better motor oils |
14 Mar 2005 03:25:43 PM |
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wrote:
In article <d145dc$6f4$1@eeyore.INS.cwru.edu>, Andy Resnick
<andy.resnick@op.case.edu> writes:
Sam Wormley wrote:
[Materials Science]
Slick Surfaces: Pressure builds to make better motor oils
Motor oil's protection against the wear and tear of steel
engine parts takes effect only at high pressures.
http://www.sciencenews.org/articles/20050312/fob6.asp
It is unclear from the article- what is the actual pressure
environment
inside the piston? I'd be surprised if it got near 17 GP, or 7 GP.
A car piston? I would be surprised if it got higher then few MP.
Mati Meron | "When you argue with a fool,
meron@cars.uchicago.edu | chances are he is doing just the
same"
You might get pressures of a few GPa in some of the
elastohydrodynamically lubricated contacts in the engine (such as the
valve train, and the gears). It is in these contacts that the antiwear
film ZDTP is most effective. In the piston ring zone, the peak pressure
in the combustion chamber will be around 5 MPa (for a gasoline engine)
and perhaps 20 MPa for a heavy duty diesel truck engine. There is an
"amplification factor" under the rings due to the pressure generation
caused by realistic solutions to the Reynolds' lubication equation, but
even so, I would suprised if you can pressures much above 50-80 MPa.
Ian Taylor
http://www.iantaylor.org.uk/
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| User: "tj Frazir" |
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| Title: Re: Slick Surfaces: Pressure builds to make better motor oils |
14 Mar 2005 06:33:39 PM |
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My oil presure is 90 psi and the injector presure is 8000 psi.
80 mpa would be 11000 psi and that would heat the ol up and detnate
it.
The starter on a rusky busted and the oil got in the compresion side
of the starter and detnated ... blow me down.
whale of a tail but its all true I swaer on my new tatoo.
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