Claims:1. An exhaust gas treatment system for vehicle, the system comprising at
least a dosing module (101) placed downstream a diesel particulate
filter (DPF (102)) in an exhaust gas pipe 5 (105), the system
characterized by an imaging unit (104) placed in the exhaust gas pipe
(105), the imaging unit (104) placed downstream from the DPF (102)
and upstream from the dosing module (101), the imaging unit (104) in
communication with an Electronic Control Unit (ECU (103)).
2. The exhaust gas treatment system for vehicle as claimed in claim 1,
wherein the imaging unit (104) is placed in exhaust gas pipe (105) by
means of a pivoted support.
3. A method (200) for detecting urea crystals in an exhaust gas treatment
system, the system comprising at least dosing module (101) placed
downstream a diesel particulate filter (DPF (102)) in an exhaust gas
pipe (105), an imaging unit (104) placed in the exhaust gas pipe (105),
20 the imaging unit (104) placed downstream from the Diesel Particulate
Filter (DPF (102)) and upstream from the dosing module (101), the
imaging unit (104) in communication with an Electronic Control Unit
(ECU (103)), the method steps comprising:
capturing (201) images of the exhaust gas pipe (105) by means of
25 the imaging unit (104);
sending (202) said captured images to the ECU (103);
analyzing (203) the captured images by means of the ECU (103) to
detect urea crystals in the exhaust gas treatment system.
4. The method (200) for detecting urea crystals 5 in an exhaust gas
treatment system as claimed in claim 3, wherein images are captured
for the region between the DPF (102) and a mixer (106), the mixer
(106) placed downstream of the dosing module (101). , Description:The present disclosure proposes an exhaust gas treatment 5 system for
vehicle. The system comprises at least a dosing module (101) placed
downstream a diesel particulate filter (DPF (102)) in an exhaust gas pipe
(105). The system is characterized by an imaging unit (104) placed in the
exhaust gas pipe (105), downstream from the DPF (102) and upstream
10 from the dosing module (101). The imaging unit (104) is in
communication with an Electronic control Unit (ECU (103)). In method
step 201, the imaging unit (104) captures images of the exhaust gas pipe
(105) by means of the imaging unit (104). In step 202, the captured images
are sent to the ECU (103) by means of a wired or wireless mode of
15 communication. In step 203, the ECU (103) analyses the captured images
by means of the processor to detect urea crystals in the exhaust gas
treatment system.