rotor positioning bearing for stop-start systems

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SKF Rotor Positioning Bearing for Stop-Startsystems improves fuel economy and reduces CO2emissions

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Story

2012 May 08, 10:06 CEST

SKF announced that the SKF Rotor Positioning

Bearing has qualified into the SKF BeyondZero

Portfolio because it is an integral component of

Stop-Start systems for micro-hybrid vehicles. In

dense urban traffic, Stop-Start can reduce fuel

consumption and CO2 emissions up to 15%. Based

on an annual mileage of 14,500km, this solution

saves 75kg CO2 per vehicle per year.

The automotive industry is continually looking for

solutions to reduce CO2 output and improve vehicle

fuel efficiency, says Franco Ferro, Director SKF

Automotive, Powertrain & Electrical and Two

Wheelers. In partnership with Valeo, SKF

developed the SKF Rotor Positioning Bearing, which helps make Stop-Start

possible.

Stop-Start turns off a vehicles engine when the vehicle stops at a red light or

slows down in congested traffic situations, then restarts the engine quickly and

silently when power is needed.

The SKF Rotor Positioning Bearing consists of a high performance magnetic ring

clamped to a high-speed, high-temperature bearing. Together they produce a

powerful, accurate, repeatable and durable magnetic field. The strong magnetic

impulses produced by the SKF Rotor Positioning Bearing provide the starter-

alternator control system with the rotors exact angular position, and enable the

system to stop and start the engine quickly and quietly.

If all the cars in a city the size of Berlin were equipped with this technology,

127000 tonnes of CO2 emissions* would be avoided each year.

*According to Eurostat, between 2007 2009 there were 1,747,790 cars in

Berlin. This number assumes that they all were equipped with Peugeot or

Citroen eHDi motors.

Gothenburg, 08 May 2012

Aktiebolaget SKF

(publ)

For further information, please contact:

PRESS: Nia Kihlstrm, Press Manager,

tel: +46 31-337 28 97, mobile: +46 706 67 28 97, e-mail:

nia.kihlstrom@skf.com

TECHNICAL PRESS: Colin Roberts, SKF Group Communication, tel +31 30

6075608, mobile: +31 653 944 111, e-mail: colin.roberts@skf.com

SKF is a leading global supplier of bearings, seals, mechatronics, lubrication

systems, and services which include technical support, maintenance and

reliability services, engineering consulting and training. SKF is represented in

more than 130 countries and has around 15,000 distributor locations worldwide.

Annual sales in 2011 were SEK 66,216 million and the number of employees

was 46,039. www.skf.com

Rotor Positioning

Bearing

Image

Rotor Positioning Bearing (179 KB) preview

SKF Rotor Positioning Bearing reduces CO2 emissions

0901d19680235329 (19.5 KB)

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