Shift-feel durability enhancement

C - Chemistry – Metallurgy – 10 – M

Patent

Rate now

  [ 0.00 ] – not rated yet Voters 0   Comments 0

Details

253/136

C10M 133/06 (2006.01)

Patent

CA 1301736

SHIFT-FEEL DURABILITY ENHANCEMENT Abstract of the Disclosure Improved durability of shift-feel frictional charac- teristics in automotive transmission fluids is achieved by use of an initially substantially inert (friction-wise) compound -- viz., an aliphatic tertiary amine having one long chain and two short chain groups -- incorporated into a formulation which is otherwise balanced for initially good shift-feel frictional properties. When the fluid is subjected to the oxidative and thermal degradation condi- tions encountered under normal service conditions, the friction modifiers that give the fluid good initial shift-feel frictional properties degrade. However, as this occurs the aliphatic tertiary amine has itself been transformed by a mechanism that activates it so that in its new form it acquires the ability to provide good shift-feel properties. Thus this additive serves as a time-activated or delayed action substitute for the friction modifiers that have been degraded during service. The result is a continuation of good shift-feel performance over a long period of severe operation. In one embodiment of the invention, oil-soluble aliphatic diamines are used as the primary (i.e., initially effective) friction-reducing additives with which the delayed action tertiary amines are used. In another embodiment, the primary (i.e., initially effective) friction-reducing additives with which the delayed action tertiary amines are used are oil-soluble N-substituted dialkanolamines.

585609

LandOfFree

Say what you really think

Search LandOfFree.com for Canadian inventors and patents. Rate them and share your experience with other people.

Rating

Shift-feel durability enhancement does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Shift-feel durability enhancement, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Shift-feel durability enhancement will most certainly appreciate the feedback.

Rate now

     

Profile ID: LFCA-PAI-O-1255622

  Search
All data on this website is collected from public sources. Our data reflects the most accurate information available at the time of publication.