Forum for Science, Industry and Business

Sponsored by:     3M 
Search our Site:

 

Euro 6 Truck Engine Debut: Scania collaborates with DuPont on their first thermoplastic oil pan module

28.06.2012
Zytel® nylon eliminates 6 kg from sump to improve fuel economy, reduce noise, emissions

An oil sump moulded from DuPont™ Zytel® nylon resin, is helping the Swedish commercial vehicle manufacturer Scania meet new challenges with regard to noise, emissions and weight. The lightweight yet equally robust oil sump – the lower shell of the oil pan module - is amongst the host of innovative technical solutions incorporated by Scania in its new Euro 6 engines.


Photo: DuPont
An oil sump moulded from DuPont™ Zytel® nylon resin is amongst the host of innovative technical solutions incorporated by Scania in its new Euro 6 engines. It has enabled a reduction in the weight of the component by over 50 percent, or 6 kg, versus its aluminium predecessor to improve fuel economy and reduce emissions.

The ground-breaking application was produced in Sweden by the Plastal Group AB, a leading supplier of engineered plastics to the automotive industry, with the material, design and processing support of DuPont representatives in the country and across Europe and the input of prototype specialists Idé-Pro of Skive, Denmark.

Amongst the range of technological highlights contained within the new 440 and 480 hp (324 and 353 kW) 13-litre Euro 6-compliant engines, unveiled by Scania in spring 2011, is the premiere of an oil sump moulded from a heat-stabilized, glass-fibre reinforced grade of Zytel® 66 nylon. The adoption of the DuPont material for this application - a first for the truck market and only the second development for commercial production vehicles worldwide following the launch of the award-winning Daimler oil pan module in 2008 - has enabled a reduction in the weight of the component by over 50 percent, or 6 kg, versus its aluminium predecessor to improve fuel economy and reduce emissions. Perhaps just as significantly, with regard to the environmental impact of the noise emitted by trucks, Scania found switching from metal to plastic in the oil sump dampens engine noise to help meet Euro 6 noise emission standards.

The particular grade of Zytel® used for the Scania oil sump is a 35% glass fibre reinforced, heat stabilized and lubricated polyamide 66 that is considered a material of choice for harsh, under-the-hood applications involving high temperatures and oil. Thanks to its low melt viscosity it readily fills thin section moulds, which, icombination with fast set up times, contributes to very fast moulding cycles. According to the development team at Scania, their main reasons for choosing Zytel® nylon were that it meets technical requirements when used in oxidised oil and still provides the necessary level of impact performance.

Having settled on the initial design and material, Scania contacted Idé-Pro to undertake the first steps in the parts' development. Idé-Pro not only produces tools and moulds parts, but also offers the development tools and expertise needed during the prototype stage. In such a way the design of the mould could be optimized to minimize warpage.

Beyond material selection, DuPont also assisted Scania in refining the sump's design and the production process, particularly with regard to achieving a consistently tight seal between the sump and the engine. This required very precise tolerance control of a large component, measuring 847mm (length) x 467mm (width) x 203mm (height), achieved by comprehensive mould flow analyses, prototype testing and ongoing optimisation of processing parameters. “Ribbing on the underside of the sump also plays a key role in remaining within the permitted tolerances for the part, as well as performing a secondary function as a defensive shield against stone impacts,” said Murray Smith development specialist at DuPont Performance Polymers in Sweden.

Its effectiveness in this role was tested at DuPont's European Technical Centre in Geneva, where a high-speed impact compressed air cannon was used to fire steel balls at an angle of 45 degrees and at a speed of 80 kph (50 mph) at the sump. These tests confirmed that the ribs effectively dissipate the impact energy, becoming damaged in the process, whilst the structural integrity of the sump remains preserved.

DuPont Performance Polymers is committed to working with customers throughout the world to develop new products, components and systems that help reduce dependence on fossil fuels and protect people and the environment. With more than 40 manufacturing, development and research centers throughout the world, DuPont Performance Polymers uses the industry’s broadest portfolio of plastics, elastomers, renewably sourced polymers, filaments and high-performance parts and shapes to deliver cost-effective solutions to customers in aerospace, automotive, consumer, electrical, electronic, industrial, sporting goods and other diversified industries.

DuPont (NYSE: DD) has been bringing world-class science and engineering to the global marketplace in the form of innovative products, materials, and services since 1802. The company believes that by collaborating with customers, governments, NGOs, and thought leaders we can help find solutions to such global challenges as providing enough healthy food for people everywhere, decreasing dependence on fossil fuels, and protecting life and the environment. For additional information about DuPont and its commitment to inclusive innovation, please visit www.dupont.com.

The DuPont Oval Logo, DuPont, The miracles of science and all product names denoted with ® are trademarks or registered trademarks of E.I. Du Pont de Nemours and Company or its affiliates.

PP-EU-2012-02

DuPont press contact
Rémi Daneyrole
Tel.: +41 (0)22 717 54 19
Fax: +41 (0)22 580 22 45
remi.daneyrole@dupont.com

Rémi Daneyrole | DuPont
Further information:
http://www.dupont.com

More articles from Automotive Engineering:

nachricht The car of the future – sleeper cars and travelling offices too?
18.06.2018 | Fraunhofer-Institut für Arbeitswirtschaft und Organisation IAO

nachricht Self-driving cars for country roads
07.05.2018 | Massachusetts Institute of Technology, CSAIL

All articles from Automotive Engineering >>>

The most recent press releases about innovation >>>

Die letzten 5 Focus-News des innovations-reports im Überblick:

Im Focus: Color effects from transparent 3D-printed nanostructures

New design tool automatically creates nanostructure 3D-print templates for user-given colors
Scientists present work at prestigious SIGGRAPH conference

Most of the objects we see are colored by pigments, but using pigments has disadvantages: such colors can fade, industrial pigments are often toxic, and...

Im Focus: Unraveling the nature of 'whistlers' from space in the lab

A new study sheds light on how ultralow frequency radio waves and plasmas interact

Scientists at the University of California, Los Angeles present new research on a curious cosmic phenomenon known as "whistlers" -- very low frequency packets...

Im Focus: New interactive machine learning tool makes car designs more aerodynamic

Scientists develop first tool to use machine learning methods to compute flow around interactively designable 3D objects. Tool will be presented at this year’s prestigious SIGGRAPH conference.

When engineers or designers want to test the aerodynamic properties of the newly designed shape of a car, airplane, or other object, they would normally model...

Im Focus: Robots as 'pump attendants': TU Graz develops robot-controlled rapid charging system for e-vehicles

Researchers from TU Graz and their industry partners have unveiled a world first: the prototype of a robot-controlled, high-speed combined charging system (CCS) for electric vehicles that enables series charging of cars in various parking positions.

Global demand for electric vehicles is forecast to rise sharply: by 2025, the number of new vehicle registrations is expected to reach 25 million per year....

Im Focus: The “TRiC” to folding actin

Proteins must be folded correctly to fulfill their molecular functions in cells. Molecular assistants called chaperones help proteins exploit their inbuilt folding potential and reach the correct three-dimensional structure. Researchers at the Max Planck Institute of Biochemistry (MPIB) have demonstrated that actin, the most abundant protein in higher developed cells, does not have the inbuilt potential to fold and instead requires special assistance to fold into its active state. The chaperone TRiC uses a previously undescribed mechanism to perform actin folding. The study was recently published in the journal Cell.

Actin is the most abundant protein in highly developed cells and has diverse functions in processes like cell stabilization, cell division and muscle...

All Focus news of the innovation-report >>>

Anzeige

Anzeige

VideoLinks
Industry & Economy
Event News

LaserForum 2018 deals with 3D production of components

17.08.2018 | Event News

Within reach of the Universe

08.08.2018 | Event News

A journey through the history of microscopy – new exhibition opens at the MDC

27.07.2018 | Event News

 
Latest News

Smallest transistor worldwide switches current with a single atom in solid electrolyte

17.08.2018 | Physics and Astronomy

Robots as Tools and Partners in Rehabilitation

17.08.2018 | Information Technology

Climate Impact Research in Hannover: Small Plants against Large Waves

17.08.2018 | Life Sciences

VideoLinks
Science & Research
Overview of more VideoLinks >>>