Additives and lubricant formulations for improved phosphorus retention properties

Abstract

A method and compositions for lubricating surfaces with lubricating oils exhibiting increased phosphorous retention. The lubricated surface includes a lubricant composition containing a base oil of lubricating viscosity, an amount of a phosphorus-containing compound and an amount of at least one hydrocarbon soluble titanium compound effective to provide an increase in phosphorus retention of the lubricant composition greater than an increase in phosphorus retention of the lubricant composition devoid of the hydrocarbon soluble titanium compound.

1 . A lubricated surface comprising a lubricant composition containing a base oil of lubricating viscosity, at least one phosphorus-containing compound, and an amount of at least one hydrocarbon soluble titanium compound effective to provide an increase in phosphorus retention of the lubricant composition greater than an increase in phosphorus retention of the lubricant composition devoid of the hydrocarbon soluble titanium compound. 
   
   
       2 . The lubricated surface of  claim 1 , wherein the lubricated surface comprises an engine drive train. 
   
   
       3 . The lubricated surface of  claim 1 , wherein the lubricated surface comprises an internal surface or component of an internal combustion engine. 
   
   
       4 . The lubricated surface of  claim 1 , wherein the lubricated surface comprises an internal surface or component of a compression ignition engine. 
   
   
       5 . The lubricated surface of  claim 1 , wherein the amount of hydrocarbon soluble titanium compound provides an amount of titanium ranging from about 50 to about 1000 ppm in the lubricant composition. 
   
   
       6 . The lubricated surface of  claim 1 , wherein the amount of hydrocarbon soluble titanium compound provides an amount of titanium ranging from about 100 to about 500 ppm in the lubricant composition. 
   
   
       7 . The lubricated surface of  claim 1 , wherein the amount of hydrocarbon soluble titanium compound provides an amount of titanium ranging from about 50 to about 300 ppm in the lubricant composition. 
   
   
       8 . The lubricated surface of  claim 1 , wherein the hydrocarbon soluble titanium compound comprises titanium neodecanoate. 
   
   
       9 . A motor vehicle comprising the lubricated surface of  claim 1 . 
   
   
       10 . The vehicle of  claim 9 , wherein the amount of hydrocarbon soluble titanium compound provides from about 1 to about 1000 parts per million titanium in the lubricant. 
   
   
       11 . A vehicle having moving parts and containing a lubricant for lubricating the moving parts, the lubricant comprising an oil of lubricating viscosity, at least one phosphorus-containing compound, and an amount of at least one hydrocarbon soluble titanium compound effective to provide an increase in phosphorus retention of the lubricant composition greater than an increase in phosphorus retention of the lubricant composition devoid of the hydrocarbon soluble titanium compound. 
   
   
       12 . The vehicle of  claim 11 , wherein the hydrocarbon soluble titanium compound comprises titanium neodecanoate. 
   
   
       13 . The vehicle of  claim 11 , wherein the moving parts comprise a heavy duty diesel engine. 
   
   
       14 . The vehicle of  claim 11 , wherein the amount of hydrocarbon soluble titanium compound provides an amount of titanium ranging from about 50 to about 1000 ppm in the lubricant composition. 
   
   
       15 . The vehicle of  claim 11 , wherein the amount of hydrocarbon soluble titanium compound provides an amount of titanium ranging from about 100 to about 500 ppm in the lubricant composition. 
   
   
       16 . The vehicle of  claim 11 , wherein the amount of hydrocarbon soluble titanium compound provides an amount of titanium ranging from about 50 to about 300 ppm in the lubricant composition. 
   
   
       17 . A fully formulated lubricant composition comprising a base oil component of lubricating viscosity, at least one phosphorus-containing compound, and an amount of hydrocarbon soluble titanium-containing agent effective to provide an increase in phosphorus retention of the lubricant composition greater than an increase in phosphorus retention of the lubricant composition devoid of the hydrocarbon soluble titanium-containing agent, wherein the titanium-containing agent is essentially devoid of sulfur and phosphorus atoms. 
   
   
       18 . The lubricant composition of  claim 17 , wherein the lubricant composition comprises a low ash, low sulfur, and low phosphorus lubricant composition suitable for compression ignition engines. 
   
   
       19 . The lubricant composition of  claim 17 , wherein the hydrocarbon soluble titanium-containing agent comprises titanium neodecanoate. 
   
   
       20 . The lubricant composition of  claim 17 , wherein the amount of hydrocarbon soluble titanium-containing agent provides from about 50 to about 1000 parts per million titanium in the lubricant composition. 
   
   
       21 . The lubricant composition of  claim 17 , wherein the amount of hydrocarbon soluble titanium compound provides an amount of titanium ranging from about 100 to about 500 ppm in the lubricant composition. 
   
   
       22 . The lubricant composition of  claim 17 , wherein the amount of hydrocarbon soluble titanium compound provides an amount of titanium ranging from about 50 to about 300 ppm in the lubricant composition. 
   
   
       23 . A method of increasing phosphorus retention in engine lubricant compositions during operation of an engine, wherein the phosphorus retention is sufficient to reduce catalyst poisoning, comprising contacting the engine parts with a lubricant composition comprising a base oil of lubricating viscosity, at least one phosphorus-containing compound, and an amount of a hydrocarbon soluble titanium compound effective to provide an increase in phosphorus retention of the lubricant composition greater than an increase in phosphorus retention of the lubricant composition devoid of the hydrocarbon soluble titanium compound. 
   
   
       24 . The method of  claim 23 , wherein the engine comprises a heavy duty diesel engine. 
   
   
       25 . The method of  claim 23 , wherein 19, wherein the hydrocarbon soluble titanium-containing agent comprises titanium neodecanoate. 
   
   
       26 . The method of  claim 23 , wherein the amount of hydrocarbon soluble titanium-containing agent provides from about 50 to about 1000 parts per million titanium in the lubricant composition. 
   
   
       27 . The method of  claim 23 , wherein the amount of hydrocarbon soluble titanium compound provides an amount of titanium ranging from about 100 to about 500 ppm in the lubricant composition. 
   
   
       28 . The method of  claim 23 , wherein the amount of hydrocarbon soluble titanium compound provides an amount of titanium ranging from about 50 to about 300 ppm in the lubricant composition.