Diesel motor having improved properties

Abstract

The present invention describes a motor designed for biodiesel compatibility comprising a particulate filter, a motor control unit being able to inject fuel to the engine in order to increase the exhaust temperature, and a lubricant composition, characterized in that the lubricant composition comprises at least one ester group containing polymer.

1 . A motor designed for biodiesel compatibility, comprising:
 a particulate filter,   a motor control unit suitable for injecting fuel to an engine in order to increase an exhaust temperature, and   a lubricant composition, wherein the lubricant composition comprises an ester group comprising polymer.   
     
     
         2 . The motor according to  claim 1 , wherein the motor meets requirements of exhaust emission standard EURO 5. 
     
     
         3 . The motor according to  claim 1 , wherein the motor further comprises a common rail system. 
     
     
         4 . The motor according to  claim 1 , wherein the motor further comprises an exhaust gas recirculation. 
     
     
         5 . The motor according to  claim 1 , wherein the particulate filter is a wall-flow filter. 
     
     
         6 . The motor according to  claim 1 , wherein the ester group comprising polymer is an alkyl (meth)acrylate polymer. 
     
     
         7 . The motor according to  claim 1 , wherein the lubricant composition comprises a mixture of at least two polymers comprising ester groups. 
     
     
         8 . The motor according to  claim 1 , wherein the lubricant composition comprises an alkyl (meth)acrylate polymer and an ethylene vinyl acetate polymer. 
     
     
         9 . The motor according to  claim 1 , wherein the lubricant composition comprises an ester group comprising polymer and an olefinic polymer. 
     
     
         10 . The motor according to  claim 1 , wherein the ester group comprising polymer is an alkyl (meth)acrylate polymer comprising dispersing groups. 
     
     
         11 . The motor according to  claim 1 , wherein the ester group comprising polymer is an alkyl (meth)acrylate polymer comprising units derived from (meth)acrylates comprising from 23 to 4000 carbon atoms. 
     
     
         12 . The motor according to  claim 1 , wherein the ester group comprising polymer is a graft copolymer comprising a nonpolar alkyl (meth)acrylate polymer as a graft base and an dispersing monomer as a graft layer. 
     
     
         13 . The motor according to  claim 1 , wherein the ester group comprising polymer has a weight-average molecular weight of from 10 000 to 600 000 g/mol. 
     
     
         14 . The motor according to  claim 1 , wherein the ester group comprising polymer is obtained by a processing comprising: polymerizing a monomer composition which comprises
 a) 0 to 40% by weight, based on the monomer composition, of one or more ethylenically unsaturated ester compounds of formula (I)   
       
         
           
           
               
               
           
         
         wherein: 
         R is hydrogen or methyl, 
         R 1  is a linear or branched alkyl radical comprising from 1 to 6 carbon atoms, and 
         R 2  and R 3  are each independently hydrogen or a —COOR′ group, wherein R′ is hydrogen or an alkyl group comprising from 1 to 6 carbon atoms, 
         b) 5 to 100% by weight, based on the monomer composition, of one or more ethylenically unsaturated ester compounds of formula (II) 
       
       
         
           
           
               
               
           
         
         wherein: 
         R is hydrogen or methyl, 
         R 4  is a linear or branched alkyl radical comprising from 7 to 15 carbon atoms, and 
         R 5  and R 6  are each independently hydrogen or a —COOR″ group, wherein R″ is hydrogen or an alkyl group comprising from 7 to 15 carbon atoms, 
         c) 0 to 80% by weight, based on the monomer composition, of one or more ethylenically unsaturated ester compounds of formula (III) 
       
       
         
           
           
               
               
           
         
         wherein: 
         R is hydrogen or methyl, 
         R 7  is a linear or branched alkyl radical comprising from 16 to 4000 carbon atoms, and 
         R 8  and R 9  are each independently hydrogen or a —COOR′″ group, wherein R′″ is hydrogen or an alkyl group comprising from 16 to 4000 carbon atoms, and 
         d) 0 to 50% by weight, based on the monomer composition, of comonomer, 
         thereby obtaining the ester group comprising polymer. 
       
     
     
         15 . The motor according to  claim 1 , wherein the ester group comprising polymer comprises:
 units derived from ester monomers comprising from 7 to 15 carbon atoms in an alcohol part, and   units derived from ester monomers comprising from 16 to 4000 carbons in an alcohol part,   wherein a weight ratio of the units derived from ester monomers comprising from 7 to 15 carbon atoms in the alcohol part to the units derived from ester monomers comprising from 16 to 4000 carbon atoms in the alcohol part is of from 3:1 to 1.1:1.   
     
     
         16 . The motor according to  claim 15 , wherein the ester group comprising polymer comprises a polar block comprising dispersing repeat units each independently derived from a heterocyclic vinyl compound or an ethylenically unsaturated polar ester compound of formula (IV) 
       
         
           
           
               
               
           
         
         wherein: 
         R is hydrogen or methyl, 
         X is oxygen, sulfur or an amino group of formula —NH— or —NR a —, wherein R a  is an alkyl radical comprising from 1 to 40 carbon atoms, 
         R 10  is a radical comprising from 2 to 1000 carbon atoms and a heteroatom, and 
         R 11  and R 12  are each independently hydrogen or a group of formula —COX′R 10′ , wherein X′ is oxygen or an amino group of formula —NH— or —NR a′ —, wherein R a′  is an alkyl radical comprising from 1 to 40 carbon atoms, and R 10′  is a radical comprising from 1 to 100 carbon atoms. 
       
     
     
         17 . The motor according to  claim 15 , wherein the ester group comprising polymer comprises a hydrophobic block and a polar block, and a weight ratio of the hydrophobic block and the polar block is of from 100:1 to 1:1. 
     
     
         18 . The motor according to  claim 1 , wherein the ester group comprising polymer is a block copolymer comprising a block of ester group comprising units and an olefinic block. 
     
     
         19 . The motor according to  claim 1 , wherein the lubricant composition comprises an additive. 
     
     
         20 . The motor according to  claim 19 , wherein the additive comprises a viscosity index improver, a pour point improver, a dispersant, a detergent, a defoamer, a corrosion inhibitor, an antioxidant, an antiwear additive, an extreme pressure additive, or a friction modifier. 
     
     
         21 . The motor according to  claim 20 , wherein the antiwear additive and the extreme pressure additive is each independently selected from the group consisting of a phosphorous compound, a compound comprising sulfur and phosphorous, a compound comprising sulfur and nitrogen, a sulfur compound comprising elemental sulfur and H 2 S-sulfurized hydrocarbons, a sulfurized glyceride, a fatty acid ester, an overbased sulfonate, a chlorine compound, a graphite and a molybdenum disulfide. 
     
     
         22 . A method of improving a low temperature performance of a lubricant comprising biodiesel, the method comprising: including the motor according to  claim 1  in the lubricant comprising biodiesel in need thereof.