Coventry Plant
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AUTOMOTIVE Coventry Plant HYDRAGAS MICROVON AIR SPRINGS PNEURIDE LEVELLING VALVES ECAS NEXT GENERATION CONTACT US AUTOMOTIVE Company Profile Trelleborg Automotive’s Coventry plant has a heritage that can be traced back over a hundred years, to the time when Dr John Boyd Dunlop began manufacturing bicycle tyres here in the city. By the mid 1950’s Dunlop were able to draw on their expertise in the design & manufacture of tyres & rubber products to introduce Pneuride Air Suspension. Commencing initially with convoluted bellows & levelling valves, the product range extended to introduce rolling diaphragms, complete trailer axle kits & in the mid 80,s the award winning drive axle air suspension, factory fitted by Iveco Ford amongst others. In 1985 BTR bought Dunlop, retaining the specialist products & technology, but disposing of the automotive tyre business to Sumitomo. BTR provided investment funds, management skills & saw the suspension business grow & prosper. HYDRAGAS MICROVON AIR SPRINGS PNEURIDE LEVELLING VALVES ECAS NEXT GENERATION CONTACT US AUTOMOTIVE In 1996 Dunlop Ltd Suspension & Components position was further strengthened by its incorporation into the BTR Automotive Anti Vibrations Systems Group which offered access to world-wide manufacturing facilities. On 1st March 2000 BTR Automotive Anti Vibration Systems was purchased by Trelleborg who promptly incorporated the Coventry Plant into the Trelleborg Automotive Group. Trelleborg Automotive AVS, Systems & Components, Coventry is recognised as a world class supplier of suspension systems & components, & has the following OEM Customers: Volvo Terex Equipment Transbus International Bell Equipment Renault ERF Isuzu Scania Land Rover LDV Ford Leyland Trucks General Motors MG Rover HYDRAGAS MICROVON AIR SPRINGS PNEURIDE LEVELLING VALVES ECAS NEXT GENERATION CONTACT US AUTOMOTIVE To compliment this customer base, Trelleborg Automotive AVS, Systems & Components, Coventry has been accredited the following quality standards: ISO 9001 Ford Q1 ISO 14001 OHSAS 18001 ISO/TS16949 HYDRAGAS MICROVON AIR SPRINGS PNEURIDE LEVELLING VALVES ECAS NEXT GENERATION CONTACT US AUTOMOTIVE Capability HYDRAGAS MICROVON AIR SPRINGS PNEURIDE LEVELLING VALVES ECAS NEXT GENERATION CONTACT US Capability AUTOMOTIVE • Trelleborg Automotive AVS, Systems & Components, Coventry can Design & Develop Electronic Control Air Suspension Systems, Air springs & Polyurethane bump stops to meet customer requirements from conception of design to volume production. • The Coventry plant has dedicated project managers along with supporting design & development engineers to support all projects. Additional support can also be provided in the form of resident engineers & video conferencing. • In-house test facility is equipped with the latest test equipment & machines required to conduct Design Verification testing of all our products. • Various CAD & FEA tools are available to support in the design & development of new products. Further information can be obtained by contacting Trelleborg Automotive AVS, Systems & Components, Coventry. HYDRAGAS MICROVON AIR SPRINGS PNEURIDE LEVELLING VALVES ECAS NEXT GENERATION CONTACT US AUTOMOTIVE Coventry Product Profile Hydragas Microvon Air Suspension (Air Springs) Electronically Controlled Air Suspension (E.C.A.S) HYDRAGAS MICROVON AIR SPRINGS PNEURIDE LEVELLING VALVES ECAS NEXT GENERATION CONTACT US Hydragas AUTOMOTIVE Trelleborg Hydragas suspension is a simple thoroughly developed system which has proved itself on a variety of vehicles with a range of gross weights. The Hydragas suspension combines the function of a coil spring & shock absorber into compact units at each wheel station which are interconnected to provide an extremely low pitch rate. Inert gas provides the springing medium & water based fluid,regulated by a damper valve pack,controls the bump & rebound. The units are interconnected, simply & conveniently by hydraulic pipe. HYDRAGAS MICROVON AIR SPRINGS PNEURIDE LEVELLING VALVES ECAS NEXT GENERATION CONTACT US Features AUTOMOTIVE Besides simplicity, Hydragas suspension offers significant advantages which can be applied to a variety of vehicle types. Much lower pitch rate. Relatively high bounce & roll rates - no need for anti-roll bars. Less intrusion into passenger & luggage space. Maintenance free. Sealed for life unit. Highly tuneable - can be adapted to meet a wide variety of pitch, bounce, bump & rebound conditions. HYDRAGAS MICROVON AIR SPRINGS PNEURIDE LEVELLING VALVES ECAS NEXT GENERATION CONTACT US Hydragas - Application AUTOMOTIVE HYDRAGAS MICROVON AIR SPRINGS PNEURIDE LEVELLING VALVES ECAS NEXT GENERATION CONTACT US AUTOMOTIVE Introduction To Microvon Trelleborg recognised the market need for an improved performance version of our already low cost environmentally friendly ‘Daltek’ microcellular MDI (DiPhenyl Methane Diisocyanate) polyurethane product,- which led to the development of Daltek NV. HYDRAGAS MICROVON AIR SPRINGS PNEURIDE LEVELLING VALVES ECAS NEXT GENERATION CONTACT US AUTOMOTIVE DALTEK NV Trelleborg Automotive together with our development partner Huntsman Polyurethanes have developed DALTEK NV (New Variant) - an improved performance microcellular MDI polyurethane material. HYDRAGAS MICROVON AIR SPRINGS PNEURIDE LEVELLING VALVES ECAS NEXT GENERATION CONTACT US AUTOMOTIVE Method of Manufacture Microcellular Polyurethane is produced by low pressure mixing of the two components at high speed. Polyol & Isocyanate. This liquid mix is then immediately injected into a heated steel tool. The microcellular polyurethane expands to fill the form cut into the mould and cures to a blown elastomer. Parts can then be automatically removed from the mould by robot, after a cure time of typically 4 minutes. HYDRAGAS MICROVON AIR SPRINGS PNEURIDE LEVELLING VALVES ECAS NEXT GENERATION CONTACT US AUTOMOTIVE Performance Properties Daltek NV has much improved processing range over Daltek. This allows greater scope in meeting load deflection characteristics at a range of densities and alternative profiles. The uniform performance of Daltek NV over a wide processing range results in less material variation during production and greater consistency of product performance. Daltek NV exhibits much improved green strength at demould which dramatically reduces splitting and cracking. Daltek NV has been developed to a specification which ensures that a single material, has a wide application range. HYDRAGAS MICROVON AIR SPRINGS PNEURIDE LEVELLING VALVES ECAS NEXT GENERATION CONTACT US Performance Properties – cont. AUTOMOTIVE The general mechanical properties, tear strength, tensile strength, elongation at break and compression set, are more than adequate to provide the requisite energy management functions over the life of the vehicle. Daltek NV additionally exhibits low water absorption without the need for specific additives and the requisite solvent resistance for use in the automotive environment (oils, fuel, glycol and brake fluid) due to its skinned, open, microcellular structure. Daltek NV has improved resilience over Daltek. This property gives the new variant a dramatically improved fatigue performance in a wider variety of applications. In addition to the ability of the new material to survive high cyclic fatigue at constant load, the material demonstrates much lower height loss after completion of the test due to a reduced hysteresis effect. HYDRAGAS MICROVON AIR SPRINGS PNEURIDE LEVELLING VALVES ECAS NEXT GENERATION CONTACT US AUTOMOTIVE Performance Properties - summary Daltek NV has excellent resistance to both hydrolysis and bio degradation. These properties are inherent in the polymer and are not dependent upon specialised additives. HYDRAGAS MICROVON AIR SPRINGS PNEURIDE LEVELLING VALVES ECAS NEXT GENERATION CONTACT US AUTOMOTIVE Low Environmental Impact Raw Materials All isocyanates are potential respiratory irritants. Both NDI (Naphthalene Diisocyanate) and TDI (Tolulene Diisocyanate) are many times more volatile than MDI and therefore more likely to damage the environment. MDI has the least environmental impact. The base material of MDI used by Trelleborg, has the least environmental impact. HYDRAGAS MICROVON AIR SPRINGS PNEURIDE LEVELLING VALVES ECAS NEXT GENERATION CONTACT US AUTOMOTIVE Recycling Huntsman PU have identified and trialled, on a pilot commercial scale, a method for recycling MDI polymers. This process produces a high yield of flexible and rigid polyol precursors in equal quantities. The flexible polyol can be re-used in the original application whilst the remainder can be used for rigid applications. TDI/NDI products can also be recycled but have a tendency to produce toxic by products. HYDRAGAS MICROVON AIR SPRINGS PNEURIDE LEVELLING VALVES ECAS NEXT GENERATION CONTACT US AUTOMOTIVE Current Applications Spring Aids. Bump Stops. Radiator Mounts. Dust Covers for Steering Joints. Dust Seals for Steering Joints. Anti-Vibration Mounts. HYDRAGAS MICROVON AIR SPRINGS PNEURIDE LEVELLING VALVES ECAS NEXT GENERATION CONTACT US AUTOMOTIVE Potential Applications Shock Absorber Mounting Eye & Bush. Suspension Spring Seat Isolation Mount Anti Roll Bar Bushes. Suspension Control Arm Bushes. Engine Anti-Vibration Mounts. Shock Absorber Top Mounts. HYDRAGAS MICROVON AIR SPRINGS PNEURIDE LEVELLING VALVES ECAS NEXT GENERATION CONTACT US AUTOMOTIVE Benefits of DALTEK NV Improved performance when compared to DALTEK. Improved process tolerance providing excellent process capability Optimised balance of physical properties that are approaching NDI.