VS - Electrical Systems From Stop-Start to Hybridization

Table of Contents

1. Disclaimer

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2. Valeo Techassist 3. Valeoscope library

4. Valeo, the Electrical Systems specialist

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5. The quest to reduce CO 2 6. Homologation cycles

Regenerative braking

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The early stage of regenerative braking in the main 12v battery To more energy recovery with i-StARS Gen3 18. Valeo in the race for affordable Mild-Hybrid .

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7. Stop-Start function, a concrete answer to reduce CO 2 12 8. Micro-Hybrid Stop-Start system at a glance 13 9. Valeo StARS system 14 System overview . 15 The StARS machine 16 The StARS controller 16 StARS - in alternator mode 16 StARS - in starter mode 19 10. Belt drive designs 22 The wrap angle 22 Automatic tensioners 23 11. Belt Starter Generator drives 24 To new Front End Accessory Drive 24 Engine acyclisms 25 Engine downsizing and acyclisms level 26 Single stage BSG tensioner 26 Dual stage BSG reversible tensioner 27 Decoupling Alternator Tensioner 28 Mounting 28 Operational behavior 28 Benefits 29 High-capacity V-ribbed belts 29 12. A fast, smooth and flexible drive 30 For a quick engine start 30 For better NVH performances 30 For reflex start features 31 For stalling comfort 31 13. i-StARS, the challenge 33 System overview 33 The i-StARS machine 34 14. What’s more with i-StARS? 35 Boost /Torque assist 35 Regeneration capacity 35 Engine-Off coasting and reflex start 35 The reflex start offer 36 15. i-StARS scalability 37 16. “i-StARS +” to more power 38 17. i-StARS Gen3 - From Micro-Hybrid to Mild-Hybrid 39 Mild-Hybrid architectures 40 Benefit from vehicle kinetic energy 42 emissions and fuel consumption 11 What are Stop-Start benefits? 11 Stop-Start is at the heart of car makers’ strategy

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19. Valeo e-Charger

20. The reinforced starter ReStART

Challenges faced by ReStART machines

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The ReStART machine

Two ReStART families for more flexibility 51 21. Impacts on the electrical system 52 The cranking pulse 52 Secure the cranking capacity and stabilize the board net voltage 53 The load balance 53 Stabilize the board net voltage 53 22. A few reminders on battery characteristics 54 Nominal voltage: 54 Terminal voltage (V) 54 Open-Circuit Voltage (V) 54 Battery nominal capacity (Cn) : 54 Battery Cold Cranking Current (CCA) 55 State of Charge (SoC) 56 Internal Resistance 57 23. Cranking capability vs. Depth of Discharge 58 Evolution of Cranking Capability at Low Temperatures 59 24. Monitor battery activity 61 The battery sensor 61 Stop-Start status versus State Of Charge 63 25. To new battery types & classification 64 New technologies for new applications 64 What is stratification in batteries? 65 26. New standards for new batteries 66 Micro cycling 66 Dynamic charge acceptance 66 Endurance 66 Classification of types 66 27. Stop-Start management 67 Engine working conditions 68 Battery State Of Health (SoH) 68 State of Function (SoF) 68 28. Stop-Start systems diagnostics 69 Analyze before changing parts 69 Stop-Start disabling after servicing operations 70 Battery disconnection 70 Battery change 70