Arrangement of elements of system of release of the fulfilled gases of the TdV6 engine - without particulate filter
Item name | Spare part number | Description |
1 | - | intake flange |
2 | - | Flexible Coupling |
3 | - | catalytic converter |
4 | - | clamp |
5 | - | rubber support (5 pieces.) |
6 | - | Central muffler |
7 | - | Rear silencer |
Location of the components of the exhaust system of the TdV6 engine - with an additional diesel particulate filter - from model year 2008 (in the presence of)
Item name | Spare part number | Description |
1 | - | intake flange |
2 | - | Flexible Coupling |
3 | - | catalytic converter |
4 | clamp | |
5 | Differential pressure sensor | |
6 | - | rubber support (6 pcs.) |
7 | Central muffler | |
8 | - | Rear left muffler (LH) |
9 | - | Rear right muffler (RH) |
10 | - | Flange connection and gasket |
11 | DPF |
Review
The elements of the TdV6 engine exhaust system are made of stainless steel and are supplied as two separate units. A catalytic converter is installed in the front section, and a center silencer and two rear silencers are installed in the rear section.
The system is anchored to the underbody with five rubber mounts that are mounted on mild steel suspension brackets welded to the system. The rubber mounts are mounted on appropriate suspension mounts that are welded to the bottom of the body.
Spare parts are supplied to repair the exhaust system. The indentations on the rear section between the center and rear mufflers indicate where to cut off to replace the rear mufflers or the front section. The spare section is attached at the place of cutting by means of a bushing and two clamps.
On vehicles from model year 2008, a diesel particulate filter is available as an option (DPF). An exhaust system without DPF is also available on vehicles from model year 2008 as DPF is optional to meet EU4 emission standards.
CAUTION: The use of biofuels can seriously contaminate and damage the coating of the catalytic converter. The DPF and catalytic converter may be irrevocably contaminated if unspecified oils or fuels are used. As a result, the vehicle will not be able to regenerate the DPF, which will result in non-compliance with exhaust emission standards and the need to replace the catalytic converter and DPF.
CAUTION: If the engine is stopped while crossing a deep ford and the exhaust pipes are under water, water can enter the system, which can also contaminate the DPF and catalytic converter. It can also damage the catalytic converter and make the DPF unable to regenerate, requiring replacement of both elements.
Front section
A flange with three holes for three turbine studs is welded to the front section. A metal gasket is used to seal the flange. The front section is attached to the turbine studs with three nuts.
The flange is welded to the elbow, which, in turn, is welded to the coupling. Forged elements of the exhaust system are welded between the coupling and the casing of the catalytic converter. The catalytic converter outlet pipe is a 60 mm diameter pipe with a wall thickness of 2.0 mm welded to the catalytic converter housing. The outlet has a hanging bracket for mounting a rubber support.
Vehicles without DPF
The rear end of the catalytic converter outlet fits into the rear section. A collar is used to crimp the joint of the front section with the flared end of the rear section.
Vehicles with optional DPF - From model year 2008
The rear catalytic converter outlet pipe has a flared end that slides over the DPF inlet pipe and is secured with a clamp. The DPF outlet has a triangular flange that mates with a similar flange at the rear section of the exhaust system. The 2 flanges are sealed with a metal gasket and secured with three locknuts screwed onto the captive studs on the DPF flange.
Rear section
Vehicles without DPF
On non-DPF vehicles, the rear section has a short 70mm diameter, 1.5mm wall thickness stub that is designed to connect to the front section as discussed above. The branch pipe is welded to the casing of the central muffler assembly.
Vehicles with optional DPF - From model year 2008
On vehicles from model year 2008 fitted with the optional DPF, the rear section has a short 70mm tube with a triangular flange that mates with a similar flange on the front section as discussed above.
All cars
The center muffler has two pressed stainless steel shells that are welded together to give a volume of 25.2 liters (1537 inches3). Inside the muffler are partitions and perforated pipes that reduce noise when exhaust gases pass through the muffler. Suspension brackets are welded to the front right and left of the muffler for installing rubber mounts.
The muffler has two outlet pipes with a diameter of 50 mm and a wall thickness of 1.5 mm, profiled to wrap around the components of the rear suspension.
Each of the outlet pipes is welded to the rear mufflers. The outlet pipes have hanging brackets for installing rubber supports.
A hanging bracket is welded to the front of each rear muffler for mounting a rubber support. The rear muffler is a ring design with a reflective tube surrounded by fiberglass for additional noise suppression. Each muffler has a volume of 2.7 liters (165 inches3).
Each muffler has an outlet pipe with a diameter of 55 mm and a wall thickness of 1.2 mm. Each outlet is folded down to direct exhaust gases away from the rear of the vehicle.
Catalytic converter
The engine management system provides accurate fuel metering to the combustion chambers, which ensures the most efficient use of fuel and reduces the emission of toxic substances.
To further reduce carbon monoxide and hydrocarbons in the exhaust gases, a catalytic converter is integrated into the front exhaust pipe (Diesel Oxidation Catalyst). In the catalytic converter, the exhaust gases pass through honeycomb ceramic elements with a special surface treatment ("washcoat"). Layer "washcoat" increases the surface area of the walls of ceramic elements by about 7000 times. over "washcoat" coated with platinum (on vehicles without DPF) or platinum and palladium (on vehicles with DPF), is an active component that serves to convert harmful waste products into inert substances. Platinum and palladium oxidize the carbon monoxides and hydrocarbons in the exhaust gases and thus convert them into carbon dioxide and water.
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