Supplier Spotlight

Video Exclusives

Inside the SRT Demon

gtr

Tim Kuniskis, Head of Passenger Cars – Dodge, talks through some of the mechanical changes behind the fastest accelerating, and most-powerful muscle car ever; the 2017 Dodge Challenger SRT Demon.


Lucid Air prototype testing

gtr

With 1,000hp and up to 400 miles driving range, the Lucid Air is one of the most exciting EC developments of the year so far. Watch here the prototype being tested earlier this year.

Click here/on image to watch video

Web Exclusives

« back to listing

DSD and Solvay develop plastic EV transmission

A new development partnership for DSD and Solvay, which aims to improve the efficiency and reduce the weight of transmissions, through the innovative use of structural plastics

 

A new development partnership will improve the efficiency and reduce the weight of transmissions through the increased use of structural plastics. Drive System Design (DSD) and Solvay aim to make the large scale use of plastic composites in transmissions a viable solution for future vehicles. DSD is contributing the transmission know-how while Solvay the materials expertise.

Explains DSD’s president for North America, Shaun Mepham, “The partnership began when we worked together on a plastic transmission housing to improve the NVH of an electric vehicle. The approach was so effective that it raised the possibility of improving the efficiency of the meshing gears by using tooth geometry that would normally be considered unacceptable because of noise.”

The improved efficiency due to the greater inherent damping provided by polymeric materials permits the use of gears that are much more efficient but would have unacceptable noise characteristics in a conventional casing. Examples of this approach include the use of reduced helix angles or spur gears and high efficiency tooth profiles with shorter height for reduced sliding and increased rolling.

Potential exists for shafts, casings and hydraulic cylinders to be made from plastic, suitably reinforced where appropriate. Full implementation could produce savings of up to 45% in terms of the casing weight for a typical passenger car transmission although with an NVH ‘skin’ included this reduces to 25%, but enables a reduction in transmission losses of up to 0.5% per gear mesh.

“New and unfamiliar materials bring pitfalls for the unwary because of the subtleties of the mechanical properties, which can change by up to 50% over the operating temperature range due to non-linear behavior. It’s always good practice to work with a materials supplier from the earliest stage of design but when the material properties are as different as polymers and metals it is absolutely essential.”

DSD and Solvay are in discussions with vehicle manufacturers to determine the areas within transmission and driveline systems that offer the best potential for material substitution in the future.

According to Solvay’s global automotive marketing manager, Mark Wright, it is important to approach potential customers with a range of alternative ideas. “Each customer has individual priorities, whether that is related to weight reduction, NVH improvement or increased efficiency. We have to reflect that by presenting the most appropriate options for their particular case.”

The technology is currently in the development phase to optimize the most suitable materials and processes in a near production-ready state. DSD and Solvay anticipate a 5 to 10-year timescale before the first applications come to market. Once proven in niche applications such as in EVs, and processing costs have been reduced by expanding the volumes, it could become a mainstream technology for passenger car transmissions.

 

6 July 2016

Read Latest Issue

International Engine of the Year Awards
Read Latest Issue
Read Latest Issue

Web Exclusive Articles

Jaguar F-Type 2.0-liter: The Knowledge
Jaguar is broadening the appeal of the its F-Type performance coupe, with the introduction of the a new 2.0-liter entry-level model, powered by a state-of-the-art four-cylinder Ingenium petrol engine
Read Now

Engines on test: Bentley Bentayga W12 TSI
The first Bentley SUV packs a 608ps, 900Nm punch via an all-new 6.0-liter twin-turbo W12 TSI powerplant. But staggering power levels aside, is it any good? 
Read Now

Fleet trialling sustainable ethanol fuel
Clariant, in conjunction with Mercedes-Benz and Haltermann Carless, have been trialling the use of sustainable cellulosic ethanol on a number of vehicles over a twelve month period
Read Now


Supplier Spotlight

Supplier SpotlightClick here for listings and information on leading suppliers covering all aspects of the engine technology industry. Want to see your company included? Contact aboobaker.tayub@ukimediaevents.com for more details.

فروشگاه اینترنتی فروشگاه اینترنتی سیستم همکاری در فروش خرید شارژ ایرانسل دانلود فیلم دانلود فیلم

Submit your industry opinion

Industry BlogDo you have an opinion you'd like to share with the engine technology community? We'd like to hear your views and opinions on the leading issues shaping the industry. Share your comments by sending up to 500 words to d.slavnich@ukimediaevents.com

Submit Your Recruitment Ad

Recruitment AdTo send us your recruitment advertising or to receive information on placing a banner please email aboobaker.tayub@ukimediaevents.com