Lubricant oil filter with continuous release additive vessel

Abstract

An oil filter that includes an additive vessel to introduce additive material into oil flowing through the filter. The additive material includes an over-based detergent and optionally one or more of: a weak base additive, an anti-oxidant additive, an anti-wear additive, a friction modifier additive, a dispersant additive, an anti-foam additive, a nano-additive, a corrosion inhibitor additive, a pour point depressant additive and a surfactant additive.

1 . An oil filter, comprising:
 a housing defining an interior chamber and having a first end and a second end, an oil inlet and an oil outlet at the first end of the housing, and an oil flow pathway between the inlet and the outlet for oil flowing through the interior chamber;   filter media disposed within the interior chamber in the oil flow pathway between the inlet and the outlet, the filter media configured to filter oil flowing through the interior chamber;   an additive vessel in the interior chamber, the additive vessel configured to introduce additive material contained therein into oil flowing through the interior chamber, the additive material includes an over-based detergent and optionally one or more of: a weak base additive, an anti-oxidant additive, an anti-wear additive, a friction modifier additive, a dispersant additive, an anti-foam additive, a nano-additive, a corrosion inhibitor additive, a pour point depressant additive and a surfactant additive.   
     
     
         2 . The oil filter of  claim 1 , wherein the filter media comprises a pleated filter media and a by-pass media disposed between the pleated filter media and the second end, the by-pass media includes a center oil passageway extending therethrough that is in communication with an interior of the pleated filter media, and the by-pass media does not include additive material intended to be introduced into the oil;
 a venturi disposed within the interior of the pleated filter media;   the additive vessel includes a capillary tube with an inlet end disposed inside the additive vessel and an outlet end disposed within the center oil passageway of the by-pass media.   
     
     
         3 . The fluid filter of  claim 2 , wherein the additive vessel further includes a one-way oil inlet that communicates the inside of the additive vessel with the interior chamber of the housing. 
     
     
         4 . The oil filter of  claim 1 , wherein the additive material comprises the over-based detergent in an amount ranging from about 10% to about 90% by weight of the additive material, about 0.2% to about 3% by weight of the friction modifier additive, about 0.5% to about 3% by weight of the anti-oxidant additive, about 1.0% to about 5% by weight of the anti-wear additive, and about 0 to about 88.3% by weight of an inert solvent. 
     
     
         5 . The oil filter of  claim 1 , wherein the additive material comprises the over-based detergent in an amount ranging from about 20% to about 90% by weight of the additive material, about 0% to about 90% by weight of hindered amines, about 0.5% to about 30% by weight of the friction modifier additive, about 1.0% to about 30% by weight of the anti-oxidant additive, about 1.0% to about 30% by weight of the anti-wear additive, and about 0 to about 77.5% by weight of an inert solvent. 
     
     
         6 . The oil filter of  claim 1 , wherein the filter media comprises a pleated filter media. 
     
     
         7 . The oil filter of  claim 1 , wherein the filter media comprises stacked ring-shaped discs having a center passageway. 
     
     
         8 . The oil filter of  claim 1 , wherein the filter media comprises a pleated filter media and a by-pass media disposed between the pleated filter media and the second end; the additive vessel is disposed between the by-pass media and the second end; the by-pass media includes a center oil passageway extending therethrough that is in communication with an interior of the pleated filter media; and
 the additive vessel includes a capillary tube with an inlet end disposed inside the additive vessel and an outlet end disposed within the center oil passageway of the by-pass media, and a one-way oil inlet that communicates the inside of the additive vessel with the interior chamber of the housing.   
     
     
         9 . The oil filter of  claim 1 , wherein the additive material comprises the over-based detergent and one or more of: a weak base additive, the anti-oxidant additive, an anti-wear additive, a friction modifier additive, a dispersant additive, an anti-foam additive, a nano-additive, a corrosion inhibitor additive, a pour point depressant additive and a surfactant additive. 
     
     
         10 . The oil filter of  claim 9 , wherein the additive material comprises the over-based detergent and two or more of: a weak base additive, the anti-oxidant additive, an anti-wear additive, a friction modifier additive, a dispersant additive, an anti-foam additive, a nano-additive, a corrosion inhibitor additive, a pour point depressant additive and a surfactant additive. 
     
     
         11 . The oil filter of  claim 1 , wherein the additive vessel includes an inlet located at a region exposed to a first pressure and an outlet located at a region exposed to a second pressure, and the first pressure is greater than the second pressure. 
     
     
         12 . An additive vessel configured to introduce an additive into oil in an oil filter, the additive vessel comprising:
 a housing defining an interior space, a one-way oil inlet into the interior space located at a region that in use is exposed to a first pressure, and a capillary tube having an inlet end disposed within the interior space and an outlet end disposed outside the interior space at a region that in use is exposed to a second pressure; the first pressure is greater than the second pressure; and   additive material contained within the interior space, the additive material includes an over-based detergent and optionally one or more of: a weak base additive, an anti-oxidant additive, an anti-wear additive, a friction modifier additive, a dispersant additive, an anti-foam additive, a nano-additive, a corrosion inhibitor additive, a pour point depressant additive and a surfactant additive.   
     
     
         13 . The additive vessel of  claim 12 , wherein the additive material comprises the over-based detergent in an amount ranging from about 10% to about 90% by weight of the additive material, about 0.2% to about 3% by weight of the friction modifier additive, about 0.5% to about 3% by weight of the anti-oxidant additive, about 1.0% to about 5% by weight of the anti-wear additive, and about 0 to about 88.3% by weight of an inert solvent. 
     
     
         14 . The additive vessel of  claim 12 , wherein the additive material comprises the over-based detergent in an amount ranging from about 20% to about 90% by weight of the additive material, about 0% to about 90% by weight of hindered amines, about 0.5% to about 30% by weight of the friction modifier additive, about 1.0% to about 30% by weight of the anti-oxidant additive, about 1.0% to about 30% by weight of the anti-wear additive, and about 0 to about 77.5% by weight of an inert solvent. 
     
     
         15 . The additive vessel of  claim 12 , wherein the additive material comprises the over-based detergent and one or more of: a weak base additive, the anti-oxidant additive, an anti-wear additive, a friction modifier additive, a dispersant additive, an anti-foam additive, a nano-additive, a corrosion inhibitor additive, a pour point depressant additive and a surfactant additive. 
     
     
         16 . The additive vessel of  claim 15 , wherein the additive material comprises the over-based detergent and two or more of: a weak base additive, the anti-oxidant additive, an anti-wear additive, a friction modifier additive, a dispersant additive, an anti-foam additive, a nano-additive, a corrosion inhibitor additive, a pour point depressant additive and a surfactant additive. 
     
     
         17 . The additive vessel of  claim 12 , wherein the capillary tube is disposed along a central axis of the housing, and the oil inlet is located radially outward of the capillary tube.