Efficient Automotive Transmission & Driveline
The move to higher, multi-speed automatic transmissions to reduce emissions and improve fuel economy invites opportunities to reduce weight and frictional loss.
More sophisticated transmissions systems face aggressive fluids and increased weight from additional components. DuPont high-performance thermoplastics, elastomers, and specialty polymers can be used in automotive transmission and driveline components and systems to take out unneeded weight and also reduce frictional loss while extending the durability and reliability of mechanical components.
Powertrain Efficiency: Six of every seven liters of fuel put into a vehicle are lost to inefficiency, and a large portion of that is due to frictional loss. DuPont solutions reduce frictional loss and have the added benefit of reducing manufacturing costs.
Lightweighting: Using high-performance plastics and composites can shed pounds in valve bodies and covers, transmission control modules, baffles, and more.
Improved Performance: DuPont synthetic lubricants and DuPont™ Vespel® parts reduce friction and improve the performance and lifespan of underhood components.
FEATURED
Meeting a Baffling Design Challenge
An integrated baffle and seal lip assembly, made of DuPont™ Hytrel® thermoplastic polyester elastomer, is used in two new transmissions from General Motors. The unique solution helps condense packaging space and enable better clutch and transmission durability.
DuPont “Science of Friction”
It has been calculated that six of every seven liters of fuel put into a vehicle are lost to inefficiencies. Connecting inefficiencies to friction, studies have found that somewhere around 10 percent of this lost energy is attributed to friction between moving parts.
INFORMATION & IDEAS
INFORMATION & IDEAS
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Kevlar® Engineered Elastomer for Tire Reinforcement
Kevlar® Engineered Elastomer for tire reinforcement is based on a new method to disperse para-aramid pulp into rubber. Read the study that explains the science behind this innovative pulp that has been adopted with success in the automobile industry.
CASE STUDIES
CASE STUDIES
DuPont™ Vespel®SP-21D Thrust Washers
Thinner, lighter Vespel® SP-21D thrust washers replace all-metal needle bearings in a new 7-speed automatic transmission for rear-drive vehicles
Case Study: Cooling System Hoses
DuPont™ Vamac® and DuPont™ Kevlar® work together to help create cooling system hoses with exceptional strength, chemical resistance, and durability in automobiles.
DUPONT BRANDS
DUPONT BRANDS
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Rynite® PET Polyester Resin
DuPont™ Rynite® PET polyester resins combine stiffness, temperature performance, dimensional stability, and a high gloss finish in glass reinforced resins, to produce high-performance parts that can be molded conventionally. -
Hytrel® TPC-ET Thermoplastic Elastomer
DuPont™ Hytrel® TPC-ET thermoplastic elastomer offers the flexibility of rubbers, the strength of plastics, and the processability of thermoplastics. making Hytrel® a material of choice for parts required to bend, twist, or compress. -
Zytel® Resins
Zytel® nylon resin is the most versatile of plastics - easy to process, easy to modify, and environmentally responsible in production and in reuse. It's tough, light and surprisingly resilient in hot, chemically aggressive and humid environments. DuPont™ Zytel® HTN high-performance polyamide bridges the performance gap between conventional engineering resins and high-end specialty polymers. -
Delrin® Acetal Resin
Engineers choose DuPont™ Delrin® acetal resins when a component has to be strong and perform reliably – especially in gears and critical moving parts. -
Vamac® Ethylene Acrylic Elastomers
DuPont™ Vamac® ethylene acrylic elastomer products thrive in harsh environments, performing in turbocharger hoses, oil cooler hoses, seals and gaskets. Vamac® elastomers can be fashioned into cured compounds with superb low-temperature resistance, high-temperature durability, and resistance to auto fluids, such as transmission fluid and engine oils. -
Kapton® Polyimide Films
DuPont™ Kapton® polyimide films make innovative design solutions possible for a broad swath of automotive and other industrial applications, including photovoltaic and wind energy, aerospace, and consumer electronics.
USES AND APPLICATIONS
USES AND APPLICATIONS
Automotive Hoses & Belts Reinforcements
DuPont™ Kevlar® brand fiber helps improve the safety, performance, and durability of automotive components such as automotive hoses and automotive belts for a wide variety of vehicles, from passenger cars and trucks to professional racecars.
