With 24 companies in 19 countriesWitzenmann is number 1 in the industry worldwide.

THE GROUP

World leaderWitzenmann is a global group specialising in the design and manufacture of flexible metal elements. Guided by our vision of "managing flexibility", our company has become renowned as a reliable manufacturer and as the innovative development partner of choice within the industry. Today, Witzenmann offers the widest product range worldwide for the most diverse areas of application. This enables us to offer the correct solutions time and time again.

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Witzenmann GmbH Östliche Karl-Friedrich-Str. 13475175 Pforzheim, GermanyPhone +49 7231 581 - 0Fax +49 7231 581 - 820wi@witzenmann.comwww.witzenmann.de

FLEXIBLE METAL ELEMENTS FOR CONSTRUCTION EQUIPMENT

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APPROVALS/CERTIFICATES

FLEXIBLE METAL ELEMENTS FOR CONSTRUCTION EQUIPMENT

Engine(Pages 4-5)

Exhaust system (Pages 6-7)

Exhaust gasaftertreatment(Page 8)

Exhaust system (Pages 6-7)

REFERENCES

p Construction equipment Bomag, Case New Holland, Caterpillar, Doosan Infracore, Godreij Boyce, Hitachi Construction Machinery, Hyundai Heavy Industries, JCB, John Deere, Kawasaki Construction Machinery, Kion Group, Komatsu, Liebherr, Putzmeister, Tandano Faun, Terex, Volvo Construction Equipment, Wacker Neuson Group, Wirtgen Group, Zeppelin Baumaschinen

p Engines Bergen Engines, Caterpillar, Cummins, Daimler, Deutz, Fiat Powertrain, Innio, Kirloskar, MaK, MAN Energy Solutions, MTU, Hyundai Heavy Industries, Paccar, Perkins, STX, Volvo Penta, Wärtsilä, Weichai, Yuchai

p Trucks/Buses Ashok Leyland, Bharat-Benz, DAF Trucks, Dongfeng, Evobus, Foton, Freightliner, Fuso, Irizar, Isuzu, IVECO, JMC, MAN, Mercedes Benz, Renault Trucks, Scania, Sinotruk, Van Hool, VDL Bus, Volvo Trucks

p Agricultural equipment AGCO, Case New Holland, Claas, John Deere, Same Deutz Fahr, Yanmar

IATF 16949

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EXHAUST GAS COLLECTING MAIN

Designsp V-end expansion joint with guiding tubes clamped on both sidesp V-end as turned part for holding a seal and clamps of the guiding tubesp Counterpart according to customer specification

p Special V-end clip with profile segments made from solid material for relatively high clamping forces in high-temperature applications

OIL/EXHAUST GAS RETURN PIPE

Designsp 3-Dimensional design as integrated bend or as bend in the corrugated areap Connection by flange, union nut, V-end connection or according to customer specificationp With and without insulation or heat shield

CHARGE AIR PIPE

Designsp 3-Dimensional design asp Integrated bend (from in-house production up to DN 150)p Cast fittingp Bend in the corrugated areap Combinations of the different types are possible

EXPANSION JOINTS

With cast connecting parts

Designsp With inner-sleevep With and without insulation

p Design of cast bend according to customer specifications

p Stainless steelp Cast iron

Special expansion elements With V-end or flanges

Special Designsp With and without inner-sleevep With and without insulation

Designsp Integration of diffuser or inner-sleeve possible

Flexible pipe elements are used on the engine for absorbing thermal expansion, vibration and for compensating assembly tolerances. Depending on the installation situation, the components are supplied pre-shaped to customised requirements. This minimises subsequent assembly costs.

ENGINE

Areas of applicationExhaust gas area: collecting main, bypass, before and after turbocharger, charge air; manifold area, oil return pipes.

p Technical characteristics p Technically oil and gas-tight p Temperature, pressure and corrosion resistant p Aging resistant p Compact design for tight installation conditions

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Decoupling elements or flexible pipe systems are used in the exhaust line between the engine and exhaust gas aftertreatment. Decoupling elements can be configured as bellows or stripwound hose assemblies.

EXHAUST SYSTEM

Technical characteristics p Optimised flow technology p Geometric and technical characteristics as well as the connection technology can be adapted to the particular customised installation situation

p Technically gas-tight p Temperature, pressure and corrosion resistant p Aging resistant

p Decoupling of engine movements, expansion and vibrationp Noise insulationp Compensation for assembly tolerances

DECOUPLING ELEMENTS

Designsp Circular, ovalp With and without inner linerp With and without external damping

PIPE SYSTEMS FOR THE EXHAUST GAS AREA

Designsp Optionally segment and/or integrated bend (up to DN 150) from in-house productionp With and without insulationp Flexible metal element as bellow or stripwound hose

STRIPWOUND HOSE ASSEMBLIES

Designsp Corrugated profilep Interlocked profile

Technical characteristics p Adequately technically gas-tight, low leakagesp Not sensitive to torsional movements

STRUCTURE-BORNE NOISE DECOUPLING ELEMENTS

Designsp Short, compact metal bellows with external meshp With inner sleeve

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Flexible pipelines and pipe systems are used in an extremely wide range of configurations. They are designed to meet the customer's needs and for use in special applications.

OTHER APPLICATIONS

Technical characteristics p Resistant to diffusion p Low weight due to thin-walled tubes p Technically oil and gas-tight p Temperature, pressure and corrosion resistant p Aging resistant

Decoupling elements or flexible pipe systems are used within the exhaust gas aftertreatment.

EXHAUST GAS AFTERTREATMENT

Technical characteristics p Optimised flow technology p Geometric and technical characteristics as well as the connection technology can be adapted to the particular customised installation situation

p Technically gas-tight p Temperature, pressure, corrosion and aging-resistant

p Decoupling of thermal expansion and vibrationp Compensation for assembly tolerances

BELLOWS ELEMENT WITH CUSTOMISED CONNECTIONS

Designsp With and without insulation or heat shieldp With and without inner linerp 3-Dimensional design profile according to customer specification

BELLOWS

Designsp With and without inner sleevep With and without inner liner

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PRESSURE TUBE CASING

HOSE ASSEMBLIES FOR AIR AND FLUID SYSTEMS

Areas of applicationLeak-tight protection system for injection tubes and single-walled pipes for flammable liquids (fuel, engine oil, hydraulic oil). Leak detection possibility with connection to monitoring devices.

Technical characteristicsp Even with large nominal diameters, the flexibility permits adaptation to the particular pipeline routingp Existing type approvals permit use in maritime applications

Areas of application Cooling water pipe, oil duct, compressed air pipe

Designs p With and without braidingp Combinations of flexible hose segments and rigid pipe sections made from stainless steel or cast elements according to customer specificationp Pipe routing optimised with regard to installation space because of bent segments

EXHAUST GAS COLLECTOR

Areas of application Exhaust gas collector for complete geometries downstream from multiple turbo char-gers and on to the customer connection

Designs p Completely pre-insulated pipeline for direct assembly on the enginep Components required for technical flow reasons such as diffusers are integrated in the pipe system

PIPELINE FOR SPECIAL MEDIA

Areas of application Supply pipe systems for flammable and volatile media

Designs p 3-Dimensional design according to customer specificationp Combination of rigid and flexible elements

PIEZO INJECTORS

Areas of applicationMetal bellows as highly dynamic seal of piezo elements against fuel

Technical characteristics p Durable design for movement, pressure pulses and vibration excitation:

>1,000,000,000 load cycles

p Pressure pulse up to 300 bar, static pressure stability > 700 bar p Corrosion resistant against all current fuels

Millimetre

Areas of application p Flexible hose lines for CO2 high-pressure air-conditioning systems

Designs p In the coolant area, completely pre-insulated or sheathed pipelines for direct mounting