We claim:
1. A discharge system (200, 300, 301, 400) for a motor vehicle (100), said
discharge system (200,300,301,400) connected to apower unit (125) of said motor
vehicle (100), the discharge system (200) comprising:
a discharge pipe (205, 305,405), said discharge pipe (205, 305,405) formed by a first portion (206, 306, 406) and a second portion (207, 307, 407), said first portion (206, 306, 406) connected to an exhaust port (184) of said power unit (125) through a first-upstream end portion (208, 308, 408) thereof, said second portion (207, 307, 407) disposed downstream of said first portion (206, 306, 406), one of said first portion (206, 306, 406) and said second portion (207,307,407). being adapted to support a treatment device (211,311, 411), and
said first portion (206, 306, 406) capable of at least partially annularly enclosing said treatment device (211, 311, 411), and said first portion (206, 306, 406) includes a first-downstream end portion (209) secured to said second portion (207, 307, 407).
2. The discharge system (200, 300, 301, 400) as claimed in claim 1, wherein said first portion (206, 306, 406) provides at least partial annular gap (230, 330) formed between said treatment device (211, 311, 411) and an inner periphery of said first portion (206, 306, 406).
3. The discharge system (200) as claimed in claim 1, wherein said second portion (207) includes a second-upstream end portion (215), and said treatment device (211) is cantilevered to the second-upstream end portion (215), and wherein one end (218) of said treatment device (211) is supported by said second-upstream end portion (215) and other end (219) of said treatment device (211) projects outwards therefrom.
4. The discharge system (200) as claimed in claim 1, wherein said second-upstream end portion (215) includes a clutching member (217), said treatment device (211) being cantilevered to the clutching member (217), and said clutching member (217) integrated with second-downstream end portion (216).
F T r F rHcmtiAT -^ n . ~ -, _ _ . .

5. The discharge system (200) as claimed in claim 1, wherein said treatment device (211) can tile vered to said second-upstream end portion (215) acts as a preliminary treatment device (211) having an overall conversion efficiency lesser than an overall conversion efficiency of a primary treatment device (210), and said primary treatment device (210) disposed downstream of said preliminary treatment device (211).
6. , The discharge system (200) as claimed in claim 5, wherein said primary treatment device (210) is disposed in at least one of said second portion (207) and a muffler (135).
7. The discharge system (200) as claimed in claim 1, wherein said treatment device (211) acts as a primary treatment device having an overall conversion efficiency greater than an overall conversion efficiency of a preliminary treatment device disposed downstream of said primary treatment device.
8. The discharge system (300, 301, 400) as claimed in claim 1, wherein said discharge system (300, 301, 400) includes, an annular ring (360) adapted to cantilever support said treatment device (311, 411) about said first portion (306, 406), and said second portion (307, 407) includes a clutching member (317, 417) acting as interfacing element between said first portion (306, 406) and said second portion (307, 407).
9. The discharge system (200, 300, 301, 400) as claimed in claim 1, wherein said first portion (206, 306,406) is formed by one or more sub-member(s), wherein said one or more sub-member(s) includes a first sub-member (221, 321, 421) and a second sub-member (222. 322,422) partitioned at least along an axis (A-A') of said first portion (206, 306, 406), and each of said first sub-member (221, 321, 421) and said second sub-member (222, 322, 422) are curved outward, and said first sub-member (221, 321,421) and said second sub-member (222, 322,422), in assembled condition, define a volume therein to accommodate said treatment device (211,311, 411).
10. The discharge system (200, 300, 301, 400) as claimed in claim 9, wherein
said first portion (206) includes a first bend (240), said first sub-member (221) is
disposed substantially upward with respect to said second sub-member (222), said : IL E C H E NN AI 28/0 2/2019 12=34

first sub-member (221) having a first radius of curvature (231) for forming said first bend (240) and said second sub-member (222) includes a second radius of curvature (232) for forming said first bend (240), and said second radius of curvature (232) substantially greater than said first radius of curvature (231).
11. The discharge system (200) as claimed in claim I, wherein said discharge . pipe (205) includes one or more bends (240), said treatment device (211) disposed substantially between a first bend (240) and a second bend thereof.
12. The discharge system (200, 300, 301, 400) as claimed, in claim 1, wherein the first portion (206, 306,406) includes a flange member (223, 323, 423) provided at said first-upstream end portion (208, 308), said flange member (223, 323, 423) at least partially holding a first sub-member (221, 321, 421) and a second sub-member (222, 322, 422) of said first portion (206, 306, 406), wherein said flange portion (223, 323, 423) includes a cylindrical upstream end adapted to engage with an exhaust port (184) of the power unit (125).
13. The discharge system (200) as claimed in claim 8, wherein first sub-member (221) and said second sub-member (222) are having a first radius of curvature (231) and a second radius of curvature (232) respectively, taken at an angular portion of a first bend 240 of said first portion (206), and a ratio of said second radius of curvature (232) to said first radius of curvature (231) is in the range of 3 to 8.
14. The discharge system (200) as claimed in claim 1, wherein the first portion (206), subsequent to a first bend (240), is having an upper circumferential portion (226) disposed at a first distance (235) from an imaginary horizontal line (236) passing through said first-upstream end portion (208) of said first portion (206), and a lower circumferential portion (227) disposed at a second distance (237) from the imaginary horizontal line (236) passing through said first-upstream end portion (208) of said first portion (206).
15. A discharge system (300, 301,400) for a motor vehicle (100), said discharge system (300, 301, 400) connected to a power unit (125) of said motor vehicle (100), the discharge system (300, 301, 400) comprising:
a discharge pipe (305, 405), said discharge pipe (305, 405) formed by a
■ j~ , _.._ iirst portion (306,406) and a second portion (307,407), said first portion • FI C E CrfENN AT 1 R t n -> , on * o. , \ . A „

(306. 407) connected to an exhaust port (184) of said power unit (125) through a first-upstream end portion (308, 408) thereof, said second portion (307, 407) disposed downstream of said first portion (306,406), one of said first portion (306, 406) and said second portion (307, 407) being adapted to support a treatment device (311,411), said first portion (306, 407) capable of at least partially annularly enclosing said treatment device (311,411), and said first portion (306, 406) includes a first-downstream end portion secured to said second portion (307), and
said treatment device (311, 411) includes a substrate (313, 413) supported by a sleeve (312, 412) thereof, said sleeve (312, 412) is configured to support a sensor member (345) disposed upstream to said substrate (313, 413).
16. The discharge system (300, 301, 400) as claimed in claim 15, wherein said sleeve (312, 412) of said treatment device (311) includes an upstream-extended portion (314, 414) provided on an upstream end thereof, and said sensor member (345) is secured at said upstream-extended portion (314, 414)
17. The discharge system (300, 301, 400) as claimed in claim 15, wherein said sensor member (345) is secured to a mounting bracket (350), and said mounting bracket (350) is secured to said upstream-extended portion (314, 414) through an aperture (355, 455) formed on said first portion (306, 406).
18. The discharge system (300, 301, 400) as claimed in claim 17, wherein said aperture (355,455) includes an inward edge (356), said inward edge (356) annularly surrounding said mounting bracket (350) is bent inward to abut an outer periphery of said sleeve (312,412).
19. A discharge system (400) for a motor vehicle (100), said discharge system (400) connected to a power unit (125) of said motor vehicle (100), the discharge system (400) comprising:
a discharge pipe (405), said discharge pipe (405) formed by a first
portion (406) and a second portion (407), said first portion (406)
_. T _ __ connected to an exhaust port (184) of said power unit (125) through a -ICE CHEKNAI 18 * 02 / 201 9 12= 34

ftrst-upstream end portion (408) thereof, said second portion (407) disposed downstream of said first portion (406), one of said first portion (406) and said second portion (407) being adapted to support a treatment device (411),
said first portion (406) capable of at least partially annularly enclosing said treatment device (411), and said first portion (406) includes a first-downstream end portion secured to said second portion (407), and
wherein at least one resistance member (465, 466) mounted to said treatment device (411).
20. The discharge system (400) as claimed in claim 19, wherein said at least one resistance member includes one or more first resistance member(s) (465) mounted to a sleeve (412) at an upstream portion of a substrate (413) supported by said treatment device (411), and said first resistance member (465) includes plurality of perforations.
21. The discharge system (400) as claimed in claim 19, wherein said at least one resistance member includes one or more second resistance member(s) (466) mounted to a sleeve (412) at a downstream portion of a substrate (413) supported by said treatment device (411), and said second resistance member (466) includes plurality of perforations.
22. The discharge system (400) as claimed in claim 19, wherein said treatment device (411) is provided with a stopper plate (480) provided at the downstream end thereof, and said second resistance member(s) (466) provided with plurality of perforations formed radially on said sleeve (412).
23. The discharge system (200) as claimed in claim 19, wherein said at least one resistance" member (465, 466) includes perforations having an overall area in the range of 50-150% of an area of a frontal area of said treatment device (411).