DESC:SOFT COPY ATTACHED ,CLAIMS:We Claim:

1. An urea filtration system (10) for an exhaust after treatment system (50), comprising: a common rail manifold (15) placed upstream of the urea dosing pump (24) connected to an Selective Catalytic Reduction (SCR) catalyst (45); and the common rail manifold (15) having a set of inlet openings (25) on one side coupled to a urea tank (40) and an outlet opening (30) connected to a urea dosing pump (24) via a locking mechanism (22);
characterized in that the filtration system (10) has a set of two or more filtering elements (12, 14, 16, 18) connected to the common rail manifold (15) via a locking mechanism (22); and a chamber (20) formed inside the common rail manifold (15) by the filtering elements (12, 14, 16, 18) facilitate laminar flow of urea there-through in such a way that during operation of the urea dosing pump (24) a negative pressure is created which draws urea from the urea tank (40) through all the set of filtering elements (12, 14, 16, 18) and transfers the urea to the urea dosing pump (24) through the common rail manifold (15).

2. The urea filtration system (10) as claimed in claim 1, wherein the common rail manifold (15) has at least two or more filtering elements (12, 14, 16, 18) for effective filtration of the urea and replacement of the set of filtering elements (12, 14, 16, 18).

3. The urea filtration system (10) as claimed in claim 1, wherein the urea is discharged to the urea dosing pump (24) after extraneous matters such as foreign debris are removed from the urea by the filtering elements (12, 14, 16, 18) through the common rail manifold (15) before it is dosed into the after treatment system (50) to control NOx emissions.

4. The urea filtration system (10) as claimed in claim 1, wherein the filtering elements (12, 14, 16, 18) placed in parallel on the common rail manifold (15) increases a surface area available for filtration so that a time period between replacements of the filtering elements (12, 14, 16, 18) is increased.

5. The urea filtration system (10) as claimed in claim 1, wherein the common rail manifold (15) act as a mounting structure for the multiple filtering elements (12, 14, 16, 18) and draw urea from all the filtering elements (12, 14, 16, 18) and transfer it to the urea dosing pump (24) through the common rail manifold (15).

6. The urea filtration system (10) as claimed in claim 1, wherein the locking mechanism (22) locks the filtering elements (12, 14, 16, 18) and the urea dosing pump (24) to the common rail manifold (15) by a push-activated lock and release mechanism or via a fastening device.

7. The urea filtration system (10) as claimed in claim 1, wherein the urea dosing pump (24) is connected to the SCR catalyst (45) of the internal combustion engine (55) of the vehicle, such as a semi-trailer truck, passenger car, tractor, plane, and recreational vehicle, or equipment, such as a diesel generator.