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DUPONT ZYTEL NYLON HIGH-PRESSURE OIL TANK OF FOR BMW MOTORCYCLE
To replace the oil-pan, a separate oil-tank of glass-reinforced DuPont Zytel nylon acts as the oil reservoir. Developed by the Mahle Group of Stuttgart, this tank holds 2.8 litres of oil and is located in the triangle of the frame, just behind the motor and above the rear wheel. The motor develops 167 hp and has maximum torque of 130 Nm. “The oil-tank for the K 1200 S is a critical part from a safety point of view,” comments Jörg Stange of Mahle’s OEM marketing department. “It must stay leak-proof in normal use throughout the lifetime of the motorcycle. If oil were to leak from it and drip onto the rear wheel, severe falls could be the result. That is why we chose Zytel 70G35 HSLRA4, a resin tested and proven in our own company.” This DuPont 66-type nylon, reinforced with 35 percent glass fibre, offers high stiffness and strength, so that the tank withstands the extremely high internal pressures created when the motor starts up with an overfilled tank. “Thanks to the melt’s easy-flow properties, this Zytel type can be processed very costeffectively,” Stange adds. “That is particularly important for this oil tank, because we produce the cover and the main body together in a single tool. The good flow characteristics also contribute to the part’s high-class surface finish, which is a requirement for this highly visible part.” The resin chosen by Mahle offers very good resistance to a broad range of chemicals, and to hot oil in particular; it is suitable for use at continuous temperatures from –20 °C to +140 °C. The Mahle Group, established 80 years ago, is a major international manufacturer of high-performance parts and systems for the automotive industry. The product range includes pistons and motor components, filter systems and valve actuation systems. With some 30 000 employees at 60 locations in Europe, America and Asia, Mahle has a global presence. The DuPont Engineering Polymers business manufactures and sells DuPont Crastin PBT and DuPont Rynite PET thermoplastic polyester resins, DuPont Delrin acetal resins, DuPont Hytrel thermoplastic polyester elastomers, DuPont ETPV engineering thermoplastic vulcanizates, DuPont Minlon mineral reinforced nylon resins, DuPont Thermx PCT polycyclohexylene dimethyl terephthalate, DuPont Tynex filaments, DuPont Vespel parts and shapes, DuPont Zenite LCP liquid crystal polymers and DuPont Zytel nylon resins. These products serve global markets in the aerospace, appliance, automotive, consumer, electrical, electronic, industrial, sporting goods and many other diversified industries. DuPont is a science company. Founded in 1802, DuPont puts science to work by creating sustainable solutions essential to a better, safer, healthier life for people everywhere. Operating in more than 70 countries, DuPont offers a wide range of innovative products and services for markets including agriculture, nutrition, electronics, communications, safety and protection, home and construction, transportation and apparel.
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