Vehicle Technology
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Vehicle Technology ENABLING A BETTER AUTOMOTIVE WORLD 150 Stephenson Hwy, Troy, MI 48083 ph(248) 619-8300 www.valeo.com The new technologies presented today by Valeo confirm the appropriateness of the company’s strategy to develop global solutions which improve safety, comfort and driving pleasure while at the same time reducing fuel consumption and pollutant emissions. 2 StARS Micro-hybrid 3 StARS starter alternator Opportunity to reduce fuel consumption in city driving by up to 15%, without making any radical changes to the engine architecture. The reduction of fuel consumption, greenhouse gases and pollutant emissions is one of the major challenges that the automotive industry faces today. Automakers are making massive R&D investments in a bid to improve the efficiency of their engines. But progress is only made in small steps. Since, in city driving, vehicles are at a standstill for almost 35% of the time, during which the engine idles needlessly, the benefits of the Stop-Start system are quite obvious. This system switches off the engine when the vehicle stops, at a traffic light, for example, and starts it up again as soon as the driver asks for power. Valeo’s StARS solution (Starter Alternator Reversible System) fully automates this function and can achieve fuel consumption savings of up to 28% in congested city driving. The StARS solution combines the alternator and starter functions. In starter mode, the engine is started immediately and silently by the belt linking the system to the crankshaft. The alternator mode features a new technology that improves the electrical efficiency of the system. These two decisive advantages make StARS the ideal product to achieve fuel savings and to improve comfort by doing away with the vibrations and noise made by the engine when it stops and restarts. Thanks to its advanced design, the StARS starter alternator can be adapted to any Stop-Start strategy required by the automaker. The system can also take into account a multitude of parameters related to the engine, clutch, gearbox, brakes or other comfort and safety equipment. It also allows the engine to be restarted when in the process of stopping, if, for example, the driver unexpectedly changes their mind. Conventional starters do not offer this function. StARS can be used with any gasoline engine with a capacity of up to 2.0 liters and Diesel engines up to 1.6 liters, and with all types of gearboxes. By 2009, the system will be available for all gasoline and diesel-fuelled vehicles, irrespective of the engine capacity. POWERTRAIN EFFICIENCY The engine runs only when the vehicle is moving In 2004, Valeo became the first automotive #FMUESJWFO4UBSUFS"MUFSOBUPSTZTUFN 4U"34 supplier to market a starter alternator. StARS The unit has a dual function, vehicle was launched in Citroën C3 1.4i 16V, and then alternator and starter motor. This CHARACTERISTICS in Citroën C2. Today’s smart fortwo mhd (micro electronically controlled system t /PGVFMDPOTVNQUJPO OPJTFBOEQPMMVUJPOXIFOBUB TUBOETUJMM DVSSFOUMZNPSFUIBOPGUSBWFMUJNFJOVSCBO reduces both fuel consumption trac conditions. hybrid drive) also offers the benefits of the StARS and CO2 emissions by t &MFDUSPOJDDPOUSPMPWFSUIFBMUFSOBUPSTSFWFSTFNPUPSNPEF approximately 10% in urban MPXVOJUJOFSUJB BOECFMUESJWFDPNCJOFUPQSPWJEFRVJDLBOE starter alternator. Valeo’s solution reduces its cycles and over 20% in real silent engine starting. trac conditions. t *OBMUFSOBUPSNPEF UIFTZTUFNJTBIJHIMZFóDJFOUDVSSFOU fuel consumption in busy city driving by 13% to generator. t &BTZUPJOTUBMMoUIFVOJUJTNPVOUFEPODPOWFOUJPOBM 4 l/100 km and emits just 103 grams/kilometer alternator xing points, Both generator and electronic DPOUSPMVOJUBSFBJSDPPMFE t 4ZTUFNJTDPNQBUJCMFXJUIFYJTUJOHWFIJDMFFMFDUSJDBM of CO2 (provisional figures). The ingenious design BSDIJUFDUVSFTBOEPOCPBSEQPXFSOFUXPSLT t *NQSPWFEFóDJFODZoUIFTZTUFNHFOFSBUFT L8PG of Valeo’s StARS starter alternator was rewarded 7DVSSFOU5IFöSTU7CFMUESJWFOTUBSUFSBMUFSOBUPS system is based on a claw unit. with the 2006 PACE Award, the Grand Prix of the EPCOS/SIA Jury and the 2004 Engineering Award, distinctions that underscore the keen interest shown by the automotive industry in this solution. %VSJOHCSBLJOH UIFFOHJOFDVUTPVU automatically when the vehicle speed slows to MFTTUIBOLQI8IFOUIFCSBLFQFEBMJTSFMFBTFE DPNQMFUFMZ JOBVUPNBUJDUSBOTNJTTJPOWFIJDMFT PSUIFESJWFSFOHBHFTBHFBS JONBOVBM USBOTNJTTJPOWFIJDMFT UIFFOHJOF automatically restarts. 4 StARS starter alternator Operating principle The starter alternator is driven by a belt that can also be used to drive other accessories, such as the air conditioning compressor, the water pump or the power steering. A reversible tensioner allows power to be transmitted in both directions, depending on whether the StARS starter alternator is working as a starter or a generator. The system features a battery based on technology that accepts high numbers of charge/discharge cycles. The battery is also fitted with a sensor that enables the system to inhibit the Stop-Start function if the charge level is too low or to restart the engine if the charge level drops below a critical threshold. Details of the StARS starter alternator The StARS starter alternator is a synchronous machine with a claw rotor. It is air-cooled and uses a three-phase current that is transformed to 12 V DC voltage by a separate electronic transformer. In starter mode, the electronic transformer delivers three currents with a 120° phase shift in relation to the data from the machine’s three position sensors. It is capable of delivering a 600 A current generating enough torque to drive the internal combustion engine immediately and at higher revs than a conventional starter. The machine can start the engine in less than 0.4 seconds, before immediately switching to alternator mode. In this configuration, the electronic transformer uses MOSFET field effect transistor technology to rectify the three phases. This is one of the reasons behind the outstanding 82% efficiency of the StARS starter alternator, which is a full 10 points higher than the best conventional alternators on the market. The machine delivers a current of up to 180 A. The benefits of the StARS starter alternator Advantages for the automaker • The StARS starter alternator significantly reduces fuel consumption and CO2 emissions with minimal investment. • At 2.5 kW at 14 V, the starter power is high. • Electrical efficiency is greater than that of a conventional alternator. • The engine can be restarted when in the process of stopping, if, for example, the driver unexpectedly changes their mind. • Installation on the cylinder block and electrical integration are simple. • The length of the powertrain is not increased, as it is when starter alternators are incorporated in the shaft line. Advantages for the user • Consumption is reduced by up to 15% in city driving. • CO2 emissions are reduced by up to 15% in city driving. • The engine stops and restarts automatically. • The engine restarts in less than 350 milliseconds and in complete silence. • Engine noise and vibrations are eliminated when the vehicle is at a temporary standstill, which represents 35% of city driving time. 5 Press release Valeo’s StARS™ starter-alternator now equips the new micro-hybrid smart Paris, France, 12th July 2007 – Valeo, first on the market in 2004 with its micro-hybrid starter- alternator technology StARS™, announces today that this system will now be standard equipment on the smart fortwo mhd (micro-hybrid drive). “Valeo is leading the way in developing solutions that meet society’s needs for cars with lower fuel consumption and emissions at reasonable cost. We are delighted that another automaker has recognised the value of the StARS™ system in achieving these objectives: the potential fuel savings offered by this system are up to 28% in congested urban traffic” says Thierry Morin, Valeo Chairman and CEO. The StARS™ system features the capacity to stop the engine at a red light or in a traffic jam and then restart it immediately and silently when the brake is released. This technology offers significant fuel savings and emission reductions without disrupting the driver’s normal driving habits. On the smart mhd, the Valeo system offers up to 13% fuel economy in urban driving conditions. The StARS™ system represents a key part of Valeo’s Powertrain Efficiency Domain which aims at enhancing performance and driving pleasure while reducing fuel consumption and pollutant emissions. This Domain covers various aspects of powertrain and vehicle transmission, such as electrical systems, engine cooling and clutch systems, for smoother, more economical transfer of power and torque to the wheels. Valeo solutions in this domain can reduce fuel consumption by up to 40%. Valeo is an independent industrial group dedicated to the design, production and sale of components, integrated systems and modules for cars and trucks. It is one of the world’s leading automotive suppliers. The Group has 133 production sites, 67 R&D centers, 9 distribution platforms, and employs 72,300 people in 29 countries worldwide. For all additional information, please contact: Claire Vidal Pilo, Media Relations, Tel: +33 1.40.55.21.26 [email protected] For more information about the Group and its activities, please visit our web site www.valeo.com www.valeo.com 6 Blind Spot Alert System 7 Blind Spot Alert System Road safety enhanced by warning of vehicles present in rear blind spots Winner of a 2007 PACE award for product innovation, Valeo’s blind spot