New Zytek Powertrain Selected for Yamaha Motiv e Zytek Automotive

2 Июн 2014 | Author: | Комментарии к записи New Zytek Powertrain Selected for Yamaha Motiv e Zytek Automotive отключены
Yamaha Motiv city car concept

New Zytek Powertrain Selected for Yamaha Motiv.e

New Zytek high-efficiency electric powertrain selected for Yamaha’s innovative, fun-to-drive MOTIV.e city car concept

Advances in ultra-high-speed motor design, thermal management and control integration cut cost, weight and size for new powertrain

Yamaha’s new MOTIV.e city car concept, shown at the Tokyo motorshow, is powered by an advanced electric drive from Zytek that employs a range of new design approaches to minimise the cost, weight and size of the system while maximising the performance and range. By supplying a number of core high voltage components as an optimised system, Zytek is also minimising the time required for vehicle development.

MOTIV.e comes from the partnership between Yamaha and Gordon Murray Design, using Murray’s revolutionary iStream® manufacturing technology to deliver a highly efficient yet fun-to-drive electric vehicle at an affordable price. Zytek’s sales and marketing director, Steve Tremble says that taking a fresh approach to the powertrain is central to achieving these goals.

“Yamaha wanted the vehicle to reflect the company’s reputation for outstanding engines,” he adds. “Interpreting this in an electric vehicle has driven excellence in performance and driveability, but also in weight reduction and efficiency to build on the potential of iStream to deliver an agile drivers’ car as well as maximising the range.”

Zytek supplies the electric motor, paired with a reduction gearbox from Vocis, and the electronic vehicle control module (EVCM) which provides the interface between the powertrain and the rest of the vehicle. The low cost power electronics is manufactured in high volumes by Zytek’s technical partner Continental. In keeping with the light weight and high efficiency targets for the MOTIV.e, the 25kW motor revs to 15,000rpm, much higher than comparable units, and drives through a single-speed reduction gearbox to give the required wheel speed.

Increasing motor speed allows the electric engine to be smaller, lighter and more cost-effective than previous-generation units.

“The motor weighs just 13kg, the gearbox just 11kg,” explains Zytek’s engineering program manager, Neil Cheeseman. “These are components that you can pick up with one hand.”


Cheeseman believes the power electronics also set new standards for weight and packaging. The inverter, for example, weighs just 7.5kg “By making everything in house, Continental has eliminated many of the compromises that stem from using bought-in components,” he said. “Their substantial investment in power electronics has delivered a scalable, power-dense and cost-effective product range that is already proven on everything from small city cars to hybrid commercial vehicles.”

The Zytek EVCM is unique, being built on an electronics platform that duals as a development tool and a cost-effective production unit complying with all relevant automotive standards. Zytek says that unlike other dual-purpose systems that are suitable for production, their unit is cost-competitive with bespoke production technologies. It is also thought to be the only EVCM that takes a big further step in powertrain control integration by including thermal management within the decision-making algorithms.

“This is a new generation of EVCM that integrates torque arbitration, temperature control and voltage management to allow better decision making,” Cheeseman explains. “It optimises the driver’s torque request based on a broad range of parameters including battery charge and temperature and the grip available at the tyres to support control. By integrating these decisions, we can provide more with less to improve both the driving experience and the range while reducing the size, weight and cost of the power electronics and battery pack.”

Zytek says it is the world’s most experienced specialist EV/HEV design consultancy, having worked with many of the major vehicle manufacturers worldwide. Today the company is a leading supplier of all aspects of hybrid and electric vehicle powertrain technologies across all vehicle sectors, complemented by expertise in control systems, vehicle integration and manufacturing. There are now more than 4,000 vehicles on the road driven by Zytek powertrains. www.zytekautomotive.co.uk

Yamaha Motiv city car concept

Press Enquiries — Richard Gotch, Market Engineering North Bar House, North Bar, Banbury, Oxfordshire, OX16 0TH, UK

+44 (0)1295 277050 / +44 (0)7831 569732

Illustrations — A wide range of illustrations is available from megan.davies@m-eng.com and can also be downloaded from www.autopresspoint.com Editors’ Notes:

•  Yamaha Motor Company Limited is a Japanese motorized vehicle-producing company.  Yamaha Motor Company (headquarters is located in Iwata, Shizuoka) is a sister company of Yamaha Corporation who shares its brands and corporate philosophy.  Along with expanding Yamaha Corporation into the world s biggest piano maker, then Yamaha CEO Genichi Kawakami took Yamaha into the field of motorized vehicles on July 1, 1955.

The company s intensive research into metal alloys for use in acoustic pianos had given Yamaha wide knowledge of the making of lightweight, yet sturdy and reliable metal constructions. This knowledge was easily applied to the making of metal frames and motor parts for motorcycles. Yamaha Motor produces motorcycles, all-terrain vehicles, boats, marine engines including outboards, automobile engines, personal watercraft and snowmobiles.  For more information please visit www.yamaha-motor.eu/eu/index.aspx .

•  Gordon Murray Design Limited is a British company operating from Shalford in Surrey. The Company is recognised as a world leader in automotive design and reverses the current industry trend for sub-contracting by having a complete in-house capability for design, prototyping and development. The Company is compact and focused and undertakes automotive and other engineering programmes in an efficient and innovative way. For more information please visit www.gordonmurraydesign.com .

•  Zytek Automotive is a subsidiary of Continental, the global powertrain, chassis and interior products supplier. Zytek are a specialist EV/HEV/fuel cell engineering consultancy, delivering innovative products and engineering services, ranging from off the shelf traction motors inverters from 40kW to 250kW to fully custom high voltage products and system solutions. Designed to ISO26262/ASIL D functional safety requirements, Zytek’s powertrains generate class-leading levels of torque accuracy and control.

Complimenting standard products, Zytek’s engineering teams can develop custom solutions for any Roadcar or Motorsport application. For more information please visit www.zytekautomotive.co.uk .

Yamaha Motiv city car concept
Yamaha Motiv city car concept
Yamaha Motiv city car concept
Yamaha Motiv city car concept
Yamaha Motiv city car concept

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