Auxiliary emergency protective lubrication system for metal mechanical components

Patent metadata

Field	Value
Publication number	US-10150932-B2
Application number	US-201816018274-A
Country	US
Kind code	B2
Filing date	Jun 26, 2018
Priority date	Jul 22, 2016
Publication date	Dec 11, 2018
Grant date	Dec 11, 2018

Abstract

An auxiliary lubricant comprising a composition, the comprising intermediate molecular weight surfactant-functionalized nanoparticles dispersed in a base oil.

First claim

What is claimed is:

1. An auxiliary lubricant system comprising:
an auxiliary lubricant reservoir configured to contain and release an auxiliary lubricant, said auxiliary lubricant comprising a composition comprising intermediate molecular weight surfactant-functionalized nanoparticles dispersed in a base oil wherein the intermediate molecular weight surfactant-functionalized nanoparticles comprise head groups adsorbed on nanoparticle surfaces, leaving intermediate molecular weight tails extended out and forming a boundary-like layer around the nanoparticle surfaces, said intermediate molecular weight tails having backbones 15-30 atoms in length;
at least one fluid delivery device fluidly coupled to said auxiliary lubricant reservoir;
at least one lubricant supply line fluidly coupled to said auxiliary lubricant reservoir;
at least one system component fluidly coupled to said auxiliary lubricant reservoir via said at least one lubricant supply line, wherein said at least one system component is lubricated by a lubricant; and
an off-normal instrumentation and control device coupled to said auxiliary lubricant reservoir configured to actuate at least one fluid delivery device to deliver said auxiliary lubricant to said at least one system component responsive to an off-normal system event.

2. The auxiliary lubricant system of claim 1 , wherein nanoparticles comprises at least one of a carbon-containing phase and an inorganic phase.

3. The auxiliary lubricant system of claim 1 , wherein said nanoparticles are functionalized with amphoteric surfactants containing alcohol, amine, carboxylic acid, carbonate, ester, ether alcohol, sulfate, sulphonate, phosphate, phosphite, or phosphonate head groups and intermediate molecular weight hydrocarbon, fluorocarbon or siloxane tails.

4. The auxiliary lubricant system of claim 1 , wherein said nanoparticles are dispersed in a base stock.

5. The auxiliary lubricant system of claim 1 , wherein said lubricant is configured to lubricate through multiple lubrication regimes, said multiple lubrication regimes comprising at least one of a boundary lubrication regime, mixed lubrication regime; an elasto-hydrodynamic lubrication regime; and a hydrodynamic lubrication regime.

6. The auxiliary lubricant system of claim 5 , wherein said protective layers that can be formed by the auxiliary lubricant after off-normal events can block metal surface-catalyzed coke formation.

Assignees

• United Technologies Corp

Inventors

• Opalka Susanne M
• Zhang Huan
• Chaudhry Zaffir A

Classifications

• C10M2201/087

  Boron oxides, acids or salts · CPC title

• C10M2203/065

  used as base material · CPC title

• C10M2207/0406

  used as base material · CPC title

• C10M2207/2835

  used as base material · CPC title

• C10M2201/066

  Molybdenum sulfide · CPC title