Gumout GDI Q&A Answers

click here for the Gumout GDI Q&A answers

Recent Topics
Would you use this or toss it?
by NoNameJoe
24 minutes 41 seconds ago
How do I unsubscribe from a thread on here?
by GerGa
25 minutes 32 seconds ago
Wiper Blade Recommendations?
by Tony_Mack
Today at 08:59 PM
DT 4th of July sale - reserved on line - disaster.
by howie2092
Today at 08:42 PM
Found a nice old Jeep Cherokee
by skyactiv
Today at 08:34 PM
Chinese stock market near crash status 2008 repeat
by GiveMeAVowel
Today at 08:11 PM
Is not leaking oil changing the oil?
by donba
Today at 08:06 PM
Which oil to use ?
by Diegs
Today at 07:34 PM
Maxlife Syn Blend
by oilchangeguy
Today at 06:54 PM
installing a Helicoil
by Donald
Today at 06:21 PM
0W20 oil change intervals?
by 007
Today at 06:13 PM
lightweight wheels
by 99Troopers
Today at 04:57 PM
Newest Members
Vincelum, Bigdaddyeasy, donba, DriverEd, cam1317
54592 Registered Users
Who's Online
97 registered (anl0109, Aimbot9000, bdcardinal, aquariuscsm, Bailey28, 97prizm, 11 invisible), 1524 Guests and 103 Spiders online.
Key: Admin, Global Mod, Mod
Forum Stats
54592 Members
66 Forums
233881 Topics
3756794 Posts

Max Online: 2862 @ 07/07/14 03:10 PM
Donate to BITOG
Topic Options
#3256421 - 01/22/14 03:02 PM MIT future lubrication direction preso.
Shannow Online   content


Registered: 12/12/02
Posts: 29245
Loc: a prisoner island
Presentation on the early stages of a lubricant optimisation programme from the MIT.

I'm impressed with the mid stroke viscosity optimisation concept to keep the viscosity up at the stroke ends (reduced boundary lubrication), while reducing the viscosity mid stroke where full hydrodynamic is in play.

Interesting (obvious 'though) on additive concentration in aras of oil volatising off...explains why volatility is important, and why the tests ARE representative of whathappens in an engine (hint, it's not about crankcase ventilation).

http://www1.eere.energy.gov/vehiclesandfuels/pdfs/deer_2012/friday/presentations/deer12_wong.pdf

Top
#3256490 - 01/22/14 04:09 PM Re: MIT future lubrication direction preso. [Re: Shannow]
SteveSRT8 Offline


Registered: 10/10/08
Posts: 16417
Loc: Sunny Florida
Why wouldn't we eventually end up with something like Delphi/GM's patented magnetorheological fluid one day?
_________________________
"In a democracy, dissent is an act of faith."
J. William Fulbright
Best ET-12.79 @ 111 mph
4340 pounds, Street tires
Just like we go to Publix

Top
#3256493 - 01/22/14 04:10 PM Re: MIT future lubrication direction preso. [Re: Shannow]
Eddie Offline


Registered: 12/07/03
Posts: 7257
Loc: Florida, Cape Coral
tHANKS SHANNOW. a LARGE AMOUNT OF INFORMATION/DATA IN THE PAPER. Ops caps were on. Ed
_________________________
CX5 Touring 2.5L :-)

Top
#3256535 - 01/22/14 05:22 PM Re: MIT future lubrication direction preso. [Re: Shannow]
JAG Offline


Registered: 10/23/05
Posts: 4550
Loc: Fredericksburg, VA
I too liked the concept of differentially altering liner temps. so viscosity is increased at the ends. Polymer VIIs can have a similar effect, at least qualitatively, since temporary shear thinning is greater mid-stroke than near the ends due to the piston velocity profiles. Keep HTHS constant by lowering base oil viscosity and increasing polymer concentration. That would increase temporary shear thinning, maintain true viscosity mid-stroke and increase true viscosity near stroke ends. Thanks Shannow.

Top
#3256545 - 01/22/14 05:37 PM Re: MIT future lubrication direction preso. [Re: Shannow]
Shannow Online   content


Registered: 12/12/02
Posts: 29245
Loc: a prisoner island
JAG, I was thinking the same in the shower this morning...about shear thinning that is.

Top