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The Automotive Transmissions Report 2014 - Product Image

The Automotive Transmissions Report 2014

  • Published: July 2014
  • Region: Global
  • 205 Pages
  • SupplierBusiness


  • Aichi Machine Industry
  • BorgWarner
  • Getrag
  • GKN
  • Kongsberg
  • MORE

The transmissions sector is no longer primarily driven by cost control and installed capacity, but is emerging as a critical technology that can deliver much needed benefits in a cost-effective fashion compared to other areas of technology. Furthermore, transmission technology is also critical to future powertrain development in terms of its ability to deliver both drivability and emissions-reducing performance.

The transmission essentially controls the driving experience that the customer enjoys and makes a significant contribution to the fuel consumption performance of the vehicle. Therefore, as OEMs strive to differentiate their product offering transmission choice and performance have become an essential element of the ‘DNA' of the vehicle.

About this report

This popular report begins by examining transmission development drivers along with transmission development changes. The report goes on to examine transmissions technology, with particular attention to Manual Transmissions (MT), Dual Clutch Automated Manual Transmissions (DCT), Automatic Transmissions, Continuously Variable Transmissions (CVT), Hybrid Transmissions and Electric Vehicle Transmissions.


1. Introduction

Forces driving mainstream transmission changes
- Transmission development drivers
Transmission efficiency gains
Greenhouse gas emissions and fuel efficiency
- The European Union
- The United States
- Japan
- China
- Other countries
Testing regimes
The influence of engine development on transmission development
Product differentiation
Investment and installed capacity

2. Key influences on technology development

Packaging and weight
- Safety regulations
Performance characteristics
- Noise Vibration Harshness (NVH)
Ratio spread
Transmission costs

3. Transmissions technology

Manual Transmissions (MTs)
- Automated manual transmissions (AMTs)
Dual clutch automated manual transmissions (DCT)
- DCT Suppliers
- DCT introduction
- Commonality of componentry
- Dry clutch or wet clutch?
- Electro-hydraulic or electro-mechanical actuation?

4. Planetary automatic transmissions

Automatic transmissions gear set configurations
Torque converters
Six-speed automatic transmissions
Seven-speed automatic transmissions
Eight-speed transmissions
Nine-speed and ten-speed transmissions
Global AT production mix forecast by number of ratios
Manual override systems on ATs

5. Continuously variable transmissions (CVT)

Market considerations
- Next generation optimised CVT technology
Other transmission technologies

Infinitely variable transmissions (IVT) or toroidal transmissions

6. Transmissions and electrification

CVT hybrid transmissions
Planetary automatic hybrid transmissions
AMT hybrid transmissions
DCT hybrid transmissions
- EV transmissions

7. Clutch development

Clutch friction materials

8. Market development

Global transmissions manufacturing
- Design source

List of Figures

Figure 1: Sensor proliferation and driveline complexity
Figure 2: Changing industry drivers from an OEM perspective
Figure 3: Changes in transmission attributes CVT, DCT, AT
Figure 4: Market growth in AT types
Figure 5: Relative fuel consumption and loss sources
Figure 6: Global CO2 (g/km) progress normalised to NEDC test cycle
Figure 7: The effect of alternative German proposals for CO2 reduction regulation for Europe
Figure 8: CO2 (g/km) performance and standards in the EU new cars 1994–2011
Figure 9: Additional costs entailed by tougher European CO2 legislation for a vehicle with emissions of 161g per km
Figure 10: Comparison of different test regimes for EU, US and Japan
Figure 11: Launch response comparison of AT and DCT with turbocharging
Figure 12: Engine design trends 2011–2020
Figure 13: Changes in average engine displacement and power density 2011–2020
Figure 14: Regional and global vehicle segment trends 2011–2020
Figure 15: Regional and global vehicle cylinder count trends 2011–2020
Figure 16: Engine and AMT package in Volkswagen's compact up! model
Figure 17: Influence of engine trends on transmission driveline NHV
Figure 18: Consumer add-on transmissions prices
Figure 19: Willingness to pay extra for AMTs, CVTs and DCTs
Figure 20: Global MT production by number of forward speeds, 2012–2017
Figure 21: European transmission installations
Figure 22: North American transmission installation market
Figure 23: Chinese transmission installations
Figure 24: Japan/ Korea transmission installations
Figure 25: Global MT production proportions 2012–2017
Figure 26: Oerlikon Graziano's innovative 7-speed AMT
Figure 27: Global AMT production, 2012–2017
Figure 28: A 3 dimensional model of FEV's 7-xDCT gearset
Figure 29: FEV's 10-xDCT overview
Figure 30: The FTP C635 transmissions family in MT and DCT form
Figure 31: Fiat Powertrain Technologies transmissions portfolio 2014
Figure 32: Getrag's FWD DCT product roadmap
Figure 33: Getrag's product development strategy
Figure 34: Getrag's 6DCT250 DCT with dry clutch
Figure 35: Getrag's FWD DCT family based on 7DCT300
Figure 36: LuK dry and wet double clutch assemblies for DCTs
Figure 37: ZF's 7DT multi-plate wet clutch DCT
Figure 38: ZF's Traxon modular heavy duty transmission
Figure 39: Global DCT production, 2012–2017
Figure 40: DCT hardware comparison conventional vs one-way clutch design
Figure 41: BorgWarner FWD Power Split transmission architecture
Figure 42: Electromechanical gear actuation Getrag's 7DCT300
Figure 43: AT and DCT ratio production trend, 2012–2020
Figure 44: Relative CO2 output improvements for AT together with powertrain electrification
Figure 45: Hydrodynamically cooled clutch
Figure 46: Bosch Mechatronic Control Module
Figure 47: GM's 6T70 6-speed AT developed in collaboration with Ford
Figure 48: Average percentage fuel economy improvement for 7G-Tronic Plus (NEDC)
Figure 49: Mercedes-Benz 7G-Tronic Plus automatic transmission
Figure 50: ZF's 8HP AT
Figure 51: A schematic of ZF's hydraulic impulse storage system
Figure 52: ZF 9HP
Figure 53: GM Ford collaboration 9-speed AT
Figure 54: Mercedes-Benz 9G-Tronic AT
Figure 55: 7G-Tronic gear set
Figure 56: Ratio proportions 2012–2017
Figure 57: Tiptronic shifter on a 2003 Porsche 911
Figure 58: Audi-LuK MultiTronic link-plate chain
Figure 59: Jatco's next-generation CVT, the first to apply an auxiliary gearbox
Figure 60: A Fixed Pitch Continuously Variable Transmission (FPCVT) assembly with two FPCVT units connected in series
Figure 61: Honda's CR-Z CVT
Figure 62: CVT production, 2012–2017
Figure 63: Jatco's CVT7
Figure 64: CVT production by region 2012–2017
Figure 65: Key technologies in improving CVT performance
Figure 66: Partial (left) and full (right) toroidal spaces within an IVT
Figure 67: Torotrak IVT variator
Figure 68: Torotrak's Flybrid flywheel and IVT system
Figure 69: Progressive drivetrain electrification
Figure 70: Additional functionality requires higher voltages – 48 volts
Figure 71: Toyota's Synergy hybrid Drive (SHD)
Figure 72: ZF's 8HP hybrid transmission
Figure 73: IAV's 7H-DCT280 hybrid transmission
Figure 74: Representation of a full sequence of a shift event using Oerlikon Graziano's eDCT
Figure 75: BorgWarner's 31-03 eGearDrive single speed transmission
Figure 76: Getrag's 2eDCT600 EV transmission
Figure 77: Wrightspeed GTD
Figure 78: Xtrac transmission for the Rolls-Royce 102EX
Figure 79: Comparison of baseline and forced dry-clutch cooling on traffic jam driving
Figure 80: Controlled cooling simulation during full-throttle launch
Figure 81: ZF's hydrodynamically cooled clutch
Figure 82: LuK's dry double clutch unit
Figure 83: Global transmissions production by region, 2012–2017
Figure 84: Global transmissions design source by region, 2014
Figure 85: Global transmissions design source by region, 2021

List of Tables

Table 1: Relating sector drivers to technical requirements
Table 2: Range of fuel consumption reduction potential, 2015-2020, for powertrain technologies
Table 3: Comparison of fuel economy regulations
Table 4: Transmission value contribution by technology
Table 5: Dry versus wet DCT performance
Table 6: Getrag's FWD DCT family showing hybridisation options
Table 7: Top 20 transmissions manufacturers 2012 and 2020

- Aichi Machine Industry
- BorgWarner
- Getrag
- Kongsberg
- Oerlikon
- Torotrak
- Univance
- Valeo

Note: Product cover images may vary from those shown


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