DESC:[001] The present disclosure generally relates to an engine mounted turbo coupled diesel oxidation catalyst system (DOC). More particularly, the present disclosure relates to an engine mounted turbo coupled diesel oxidation catalyst System to reduce the significant consumption and requirement of precious metal (PGM) in the in exhaust after treatment system and method of manufacturing thereof.
[002] In automobile sectors significantly reducing the load of PGM is a main requirement to attain good temperatures at DOC inlet to create necessary NOx conversion. Thereby the concept of close coupled engine mounted DOC can be evolved. Hence by close coupling of DOC, there is likely chances of reduction in the substrate size by more than half, we can be able to reduce volume of substrate from 3.5 L to 1.6 L and weight of DOC from 12 Kg to 4.5 kg, approximately. Further requirement would be to make assembly easily maintainable and light weight. Further since the DOC and SCR systems are separate; it is easy to handle the components with less manpower.
[003] Further to reduce the PGM content in the catalyst for saving the cost of substrate to a greater extent. In addition to it, there is a need of effective heat shield system for the high temperature application in a safety environment. Also, the packaging is a constraint as we need to use the exhaust heat only for letting happen the catalyst reactions.
[004]
[005] Therefore, there is an unmet need of cost effective, simple, user friendly engine mounted turbo coupled diesel oxidation catalyst system to reduce the significant consumption and requirement of precious metal (PGM) in the in exhaust after treatment system and method of manufacturing thereof.
[006] The present invention solves the aforementioned and other allied problems by the way of providing engine mounted turbo coupled diesel oxidation catalyst System to reduce the significant consumption and requirement of precious metal (PGM) in the in exhaust after treatment system and method of manufacturing thereof.
[007] The present invention designed a 4.5 Kg. DOC in comparison of 12 Kg. of Existing DOC which is heavy in weight and not compact in nature. As we know the effect of diameter in the volume of the substrate is having squared effect, so we reduce the diameter and increase the length with the optimization of cell density.
[008] The below illustration explained the substrate packaging front of the present invention vis-a-viz conventional and existing substrate packaging front.
DOC/ Substrate Parameter Diameter Length Volume Volume Factor Weight with substrate Image

Existing DOC
9.5”
3”
3.5 l
0.9
12 Kg

DOC of the present invention
5.2”
4.72”
1.6 l
0.4
4.5 Kg

[009] In one embodiment, the present invention provides the engine mounted DOC in commercial vehicle segment, wherein the close-coupled DOC at turbo end, enables to reduce the catalyst PGM loading by almost half. It also providing scope to the industry the reduce the quantity even more by optimizing the design. As the present system is a high temperature application system, which taking it in engine peripheral in vicinity of other components, so we have given good metallic heat shield which works on insulating both side heats.
BRIEF DESCRIPTION OF DRAWINGS
[0010] Aspects of the present disclosure are illustrated by way of example(s), and not by way of limitation, in the accompanying drawings, wherein:
[0011] FIG. 1 is an exploded view of the Engine mounted DOC installation in E494 engine and E483 engine; and
[0012] FIG. 2 is a layout of engine mounted DOC at turbo end on Engine E494 Engine
DETAILED DESCRIPTION OF ILLUSTRATIVE EMBODIMENTS
[0013] The present invention belongs to the field of an engine mounted turbo coupled diesel oxidation catalyst system to reduce the significant consumption and requirement of precious metal (PGM) in the in exhaust after treatment system and method of manufacturing thereof.
[0014] Referring to FIG. 1 exploded view of the engine mounted DOC installation in E494 engine and E483 engine. The FIG.1 explain the exploded view of the engine mounted DOC installation in E494 engine and E483 engine.
[0015] The FIG. 2 is a layout of engine mounted DOC at turbo end on Engine E494 Engine. The present system represent layout of engine mounted DOC at turbo end on Engine E494 Engine
[0016] Although the present disclosure is described in terms of certain preferred embodiments and examples, other embodiments and examples will be apparent to those of ordinary skill in the art, given the benefit of this disclosure, including embodiments and examples that do not provide all of the benefits and features set forth herein, which are also within the scope of this disclosure. It is to be understood that other embodiments may be utilized, without departing from the true spirit and scope of the present invention.
[0017] It is to be understood that other embodiments of the present disclosure will become readily apparent to those skilled in the art from the following detailed description, wherein it is shown and described only various embodiments of the disclosure by way of illustration. Accordingly, the drawings and description are to be regarded as illustrative in nature and not as restrictive.
[0018] It would become abundantly clear to a person in the art, after reading this specification that the present subject matter also provides an engine mounted turbo coupled diesel oxidation catalyst System to reduce the significant consumption and requirement of precious metal (PGM) in the in exhaust after treatment system and method of manufacturing thereof. More specifically, the present subject matter discloses a engine mounted turbo coupled diesel oxidation catalyst System to reduce the significant consumption and requirement of precious metal (PGM) in the in exhaust after treatment system effectively and without departing from the spirit of the present subject matter. While the subject matter may be susceptible to various modifications and alternative forms, specific embodiments have been shown by way of example in the drawings and have been described herein. Alternate embodiments or modifications may be practiced without departing from the spirit of the present subject matter. The drawings shown are schematic drawings and may not be to the scale. While the drawings show some features of the subject matter, some features may be omitted. Alternatively, in some other cases some features may be emphasized while others are not. Further, the methods disclosed herein may be performed in manner and/or order in which the methods are explained. Alternatively, the methods may be performed in manner or order different than what is explained without departing from the spirit of the present subject matter. It should be understood that the subject matter is not intended to be limited to the particular forms disclosed. Rather, the subject matter is to cover all modifications, equivalents, and alternatives falling within the spirit and scope of the subject matter.

Yours Faithfully

ANIL KUMAR PANDEY
(IN P/A 2359)
AGENT FOR THE APPLICANT(S)
,CLAIMS:We claim:

1) An engine mounted turbo coupled diesel oxidation catalyst system to reduce the significant consumption and requirement of precious metal (PGM) in the in exhaust after treatment system lubricating system characterized by 4.5 Kg. diesel oxidation catalyst system
2) The engine mounted turbo coupled diesel oxidation catalyst system as claimed in Claim 1, wherein said close-coupled diesel oxidation catalyst system at turbo end, enables to reduce the catalyst PGM loading by almost half.

Yours Faithfully

ANIL KUMAR PANDEY
(IN P/A 2359)
AGENT FOR THE APPLICANT(S)