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ADDITIVES AND LUBRICANT FORMULATIONS FOR IMPROVED CATALYST PERFORMANCE

  • US 20080280796A1
  • Filed: 09/17/2007
  • Published: 11/13/2008
  • Est. Priority Date: 05/08/2007
  • Status: Active Grant
First Claim
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1. A lubricated surface of a device containing an exhaust catalyst, the surface comprising a lubricant composition including a base oil of lubricating viscosity, at least one phosphorus-containing compound, and an amount of at least one hydrocarbon soluble titanium compound that is effective to provide an aged catalyst temperature that converts at least fifty percent of exhaust gas hydrocarbons, carbon monoxide, and NOx that is lower than an aged catalyst temperature that converts at least fifty percent of exhaust gas hydrocarbons, carbon monoxide, and NOx of the lubricant composition devoid of the hydrocarbon soluble titanium compound.

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