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SupplierBusiness
The Automotive Transmissions Report
2014 edition supplierbusiness.com
Sectoral Report
IHS Automotive
2014 edition 2 2014 IHS
IHS Automotive SupplierBusiness | The Automotive Transmissions Report
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ContentsIntroduction ..................................................................................................................................................................... 6
Forces driving mainstream transmission changes ................................................................................................. 9Transmission development drivers ..............................................................................................................................11
Transmission efficiency gains .................................................................................................................................. 12Greenhouse gas emissions and fuel efficiency ..................................................................................................... 15
The European Union .................................................................................................................................................. 15The United States ........................................................................................................................................................17Japan ......................................................................................................................................................................... 18China ......................................................................................................................................................................... 18Other countries .......................................................................................................................................................... 18
Testing regimes .......................................................................................................................................................... 19The influence of engine development on transmission development ................................................................ 21Product differentiation .............................................................................................................................................. 22Investment and installed capacity ........................................................................................................................... 23
Key influences on technology development ............................................................................................................. 24Packaging and weight ............................................................................................................................................... 24
Safety regulations ....................................................................................................................................................... 26Performance characteristics ................................................................................................................................... 26
Noise Vibration Harshness (NVH) ............................................................................................................................... 27Ratio spread ............................................................................................................................................................... 28Transmission costs.................................................................................................................................................... 29
Transmissions technology ........................................................................................................................................... 31Manual Transmissions (MTs) .................................................................................................................................... 32
Automated manual transmissions (AMTs) ................................................................................................................... 35Dual clutch automated manual transmissions (DCT) ........................................................................................... 39
DCT Suppliers ............................................................................................................................................................ 39DCT introduction ........................................................................................................................................................ 49Commonality of componentry .................................................................................................................................... 52Dry clutch or wet clutch? ............................................................................................................................................ 53Electro-hydraulic or electro-mechanical actuation? .................................................................................................... 54
Planetary automatic transmissions ........................................................................................................................... 56Automatic transmissions gear set configurations ........................................................................................................ 58Torque converters ...................................................................................................................................................... 59Six-speed automatic transmissions ............................................................................................................................ 61Seven-speed automatic transmissions ....................................................................................................................... 63Eight-speed transmissions ......................................................................................................................................... 65Nine-speed and ten-speed transmissions .................................................................................................................. 67Global AT production mix forecast by number of ratios .............................................................................................. 70Manual override systems on ATs ................................................................................................................................ 71
2014 edition 3 2014 IHS
IHS Automotive SupplierBusiness | The Automotive Transmissions Report
Continuously variable transmissions (CVT) .............................................................................................................. 72Market considerations .............................................................................................................................................. 76
Next generation optimised CVT technology ............................................................................................................... 79
Other transmission technologies ............................................................................................................................... 81Infinitely variable transmissions (IVT) or toroidal transmissions ........................................................................ 81
Transmissions and electrification .............................................................................................................................. 84CVT hybrid transmissions......................................................................................................................................... 86Planetary automatic hybrid transmissions ............................................................................................................ 87AMT hybrid transmissions ........................................................................................................................................ 88DCT hybrid transmissions ........................................................................................................................................ 88
EV transmissions ........................................................................................................................................................ 89
Clutch development ..................................................................................................................................................... 94Clutch friction materials ..............................