1. A urea dosing system (100) for a vehicle, the urea dosing system (100) comprising: a urea tank (102) configured to store a urea solution; a urea pump (104) fluidly coupled to the urea tank (102) and configured to deliver pressurized urea to a dosing injector; and a backflow connector (108) fluidly coupled between the urea pump (104) and the urea tank (102), wherein the backflow connector (108) comprises a throttle-based flow restriction formed as a fixed orifice throttle, wherein the backflow connector (108) is configured to generate a controlled pressure drop to maintain a predefined backpressure for proper operation of the urea pump (104) while allowing reverse flow during purging.

2. The urea dosing system (100) as claimed in claim 1, wherein the fixed orifice throttle is configured to limit ingress of hard or crystallized urea particles toward the urea pump (104), thereby reducing a risk of pump damage and system failure.

3. The urea dosing system (100) as claimed in claim 1, wherein the bac

Description:UREA DOSING SYSTEM FOR A VEHICLE
FIELD OF THE DISCLOSURE
[0001] This invention generally relates to a field of a urea supply system for vehicles, and in particular, to a urea dosing system for a vehicle and method thereof.
BACKGROUND
[0002] The subject matter discussed in the background section should not be assumed to be prior art merely as a result of its mention in the background section. Similarly, a problem mentioned in the background section or associated with the subject matter of the background section should not be assumed to have been previously recognized in the prior art. The subject matter in the background section merely represents different approaches, which in and of themselves may also correspond to implementations of the claimed technology.
[0003] Urea dosing systems are widely employed in modern vehicles equipped with selective catalytic reduction (SCR) technology to reduce nitrogen oxide (NOx) emissions from exhaust gases. A typical urea supply module includes a urea pump configured t , Claims:We Claim:
1. A urea dosing system (100) for a vehicle, the urea dosing system (100) comprising:
a urea tank (102) configured to store a urea solution;
a urea pump (104) fluidly coupled to the urea tank (102) and configured to deliver pressurized urea to a dosing injector; and
a backflow connector (108) fluidly coupled between the urea pump (104) and the urea tank (102), wherein the backflow connector (108) comprises a throttle-based flow restriction formed as a fixed orifice throttle,
wherein the backflow connector (108) is configured to generate a controlled pressure drop to maintain a predefined backpressure for proper operation of the urea pump (104) while allowing reverse flow during purging.

2. The urea dosing system (100) as claimed in claim 1, wherein the fixed orifice throttle is configured to limit ingress of hard or crystallized urea particles toward the urea pump (104), thereby reducing a risk of pump damage and system failure.
3. The urea dosing system (100) as claimed in claim 1, wherein the bac