Emerging Technologies and Market Trends in Automotive Transmissions

  • ID: 3422623
  • Report
  • 191 pages
  • Autelligence
1 of 4
Global Sales of Light Vehicle Transmissions to Reach 100 Million Units in 2018

FEATURED COMPANIES

  • Aisin Seiki
  • BorgWarner
  • Chongqing Tsingshan
  • Delphi
  • Eaton
  • Getrag
  • MORE
A comprehensive review of the latest advances, trends, issues, forecasts and supplier profiles.

For many years, automotive transmissions took something of a back seat as the industry’s resources were devoted to the development of enhanced engines and vehicle styling, safety and comfort.

However, the combined demands for greater fuel efficiency, lower emissions and improved driving experience have repositioned transmissions technology as a priority for manufacturers around the world.

Despite a number of transmission technologies being currently used, fuel economy and driver engagement are helping manual options to retain their market-leading position and are expected to continue doing so for the foreseeable future. Six-speed manual transmission units, compatibility with engine down-speeding and cylinder deactivation plus electronic clutch assistance will also help to support manual transmission demand.

The latest updated edition of ‘Emerging technologies and market trends in automotive transmissions’ examines the key developments within the global transmission arena, reviews the important trends across each of the major developed markets, and profiles the most important players in the sector.

Alternatives to manual transmission have also advanced significantly. The planetary automatic with torque converter provides superior shift quality and offers an increasing number of ratios alongside developments including Lepelletier gear set design, torque converter lock-up clutches and torsional pendulum dampers.

The penetration of dual-clutch transmissions is also expected to increase dramatically by 2020 as Chinese output helps to make costs more competitive.

This newly updated report examines:

- How and why future demand for six-speed automatic transmission is likely to vary compared with that for units with more ratios.
- Whether advances such as infinitely variable transmission can improve the prospects of belt-driven CVTs.
- How AVL, Magna and Schaeffler are innovating within the hybrid-electric vehicle segment.
- Why the dominance of the planetary automatic is set to continue in North America.
- The important shift in demand that is taking place in China.
- The implications of fuel economy, launch and shift quality, NVH, bearings, cost and other market drivers.
- Main players in the sector in a set of detailed company profiles

With global sales of light vehicle transmissions expected to top 100 million units within three years and technology advancing apace, developments in manual, automatic, single-clutch, dual-clutch, continuously-variable and hybrid/electric vehicle units certainly look set to be observed with increasing interest over the short to medium term.

The report provides an informed insight that will prove invaluable for automotive industry professionals with an interest in the market.

About the Author
Michael Murphy has worked in automotive research for 10 years, in which time he has worked as automotive news editor for a leading publication and written over 40 reports and numerous features for leading publishers in the industry.

READ MORE
Note: Product cover images may vary from those shown
2 of 4

FEATURED COMPANIES

  • Aisin Seiki
  • BorgWarner
  • Chongqing Tsingshan
  • Delphi
  • Eaton
  • Getrag
  • MORE
Chapter 1: Executive Summary
Global patterns of growth and development in automotive transmissions

Chapter 2: Transmission technology development drivers and challenges
Fuel economy
Launch and shift quality
Packaging, weight, torque density and ratio spread
Noise, vibration and harshness (NVH)
Lubrication
Bearings
Cost
Simulation
Sensors
Testing

Chapter 3: Manual transmissions
The effects of engine down-sizing and down-speeding
The dual-mass flywheel
Advances in synchroniser friction materials
Electronic clutch assistance
Two-shaft manuals
Three-shaft manuals
The global manual transmissions market

Chapter 4: Automatic transmissions
Planetary gear set designs
Advances with launch devices
Torque converters
Torque pulse dampers
The ZF Hydrodynamically cooled clutch
Internal clutches and brakes
Wet-clutch return springs
The Selectable One-way Clutch
Stop-start functionality
Torque sensors
Manual override systems on automatic transmissions
The challenges of research and development
Four- and five-speed automatics
Six-speed automatics
Seven-speed automatics
Eight-speed automatics
Nine-speed automatics
Ten-speed automatics
The global planetary automatic transmissions market

Chapter 5: Single-clutch automated manual transmissions
Addressing the shift-quality challenge
The global single-clutch AMT market

Chapter 6: Dual-clutch transmissions
Clutch technologies
Clutch friction materials
Actuator technologies
Control units
Double-clutch bearings
Production DCTs
Innovative DCT concepts
The global DCT market

Chapter 7: Continuously-variable transmissions
Variator pulleys
Belts
Chains
Actuators and pumps
Production CVTs
Infinitely-variable transmissions
The global CVT market

Chapter 8: Hybrid-electric vehicle transmissions
Planetary hybrid transmissions
Planetary automatic hybrid transmissions
AMT hybrid transmissions
DCT hybrid transmissions
CVT hybrid transmissions
The General Motors Voltec transmission
Novel hybrid-electric transmission concepts
The global hybrid-electric vehicle transmission market

Chapter 9: Electric vehicle transmissions
Single-speed EV transmissions
Two-speed EV transmissions
Three-speed EV transmissions
Multi-speed EV transmissions
The global hybrid-electric and electric vehicle transmissions market

Chapter 10: Transmission market forecasts
Global
Europe
North America
Japan and South Korea
Greater China
South America

Profiles
Aisin Seiki
BorgWarner
Chongqing Tsingshan
Delphi
Eaton
Getrag
INA
JATCO (Japanese Automatic Transmission Company)
Magneti Marelli
Oerlikon Graziano
Shaanxi Fast Auto Drive Group Company
Valeo
ZF Friedrichshafen AG
Zhejiang Wanliyang Transmission

Table of figures
Figure 1: Eight drivers of transmissions development
Figure 2: CO2 emissions targets in major markets converted to NEDC
Figure 3: Automatic transmission fuel economy gains since five-speed units
Figure 4: Technology advances and improved efficiency of wet-clutch, six-speed DCTs
Figure 5: Efficiency of automatics (AT), DCTs and CVTs, present and past
Figure 6: Comparison of the efficiencies of different transmission types
Figure 7: Traction diagrams for a NA ICE with six- and nine-speed transmissions
Figure 8: Launch response comparison of automatic (AT) and DCT with turbocharging
Figure 9: AVL shift line driveability (DRB) optimiser
Figure 10: Jatco Adaptive Shift Control
Figure 11: Global vehicle segment trends
Figure 12: Global engine cylinder count trends
Figure 13: Ratio spread of AT, DCT and CVT, present and past
Figure 14: Full load engine torsional fluctuations
Figure 15: Gear tooth force level versus torque at pinion: stage 1 & 2
Figure 16: Noise level comparison: standard push belt vs two belts with improved element sequence
Figure 17: Synchroniser cut-off sleeve
Figure 18: Acrylic transmission housing used for oil flow analysis
Figure 19: One piece gear wheel and two-piece steel equivalent
Figure 20: Principles of component shielding
Figure 21: Principles of a high-level sump
Figure 22: Stribeck curve of coefficient of friction versus (viscosity x velocity)/load
Figure 23: Different additive mixes typically in gear oil and ATF
Figure 24: Coefficient of friction over time, wet clutches in oil A, oil B and oil C
Figure 25: Comparison of Shell GtL ATF with Group III synthetic ATF C
Figure 26: Friction reduction using optimised bearings on an AT main shaft
Figure 27: Bearing friction torque at 50kph: deep-groove ball bearings (dgbb) versus tapered roller bearings (trbs)
Figure 28: Bearing friction torque at 50kph: deep-groove ball bearings (dgbb) versus tapered roller bearings (trbs)
Figure 29: Efficiency of automatics (AT), DCTs and CVTs, present and past
Figure 30: Importance of transmission attributes by region
Figure 31: Simulation and actual measurement of secondary flywheel side speed during diesel engine start
Figure 32: Modelling of transmission durability with ICE changed from gasoline to diesel
Figure 33: Simulation projects during the development of the GM M1x transmission
Figure 34: Flow field comparison of the PIV data with the second CFD solver results
Figure 35: Optimisation of axial oil flow within a wet clutch using simulation
Figure 36: Axial flow distribution optimised using CFD
Figure 37: Sensor technology guide
Figure 38: Schaeffler dual-mass flywheel with centrifugal pendulum-type absorber
Figure 39: Performance of a DMF versus a traditional clutch spring damper
Figure 40: The principle of rolling cylinder deactivation on a three-cylinder engine
Figure 41: Order analysis of RCD 1.5 operation with a centrifugal pendulum-type absorber
Figure 42: HOERBIGER hybrid synchroniser ring
Figure 43: Friction performance comparison: woven carbon synchronisers with two different lubricants
Figure 44: LuK e-clutch designs
Figure 45: LuK hydrostatic clutch actuator (HCA)
Figure 46: Relative cost of manual, e-clutch, AMT and DCT
Figure 47: Single-lay-shaft ZF six-speed manual transmission
Figure 48: Two-lay-shaft manual transmission schematic
Figure 49: Manual transmission proportion in new cars in the US, 1975 – 2011
Figure 50: Market share of manual transmissions <250Nm in Europe
Figure 51: Simple epicyclic planetary gear set
Figure 52: Ravigneaux gear set
Figure 53: Vibration as a function of damper spring stiffness ratio
Figure 54: LuK spring mass and pendulum damper
Figure 55: Torsional damping of conventional and pendulum dampers on a six-cylinder diesel engine
Figure 56: ZF Sachs’ Hydrodynamically cooled clutch
Figure 57: Torque drag with differing spring load tolerances
Figure 58: Component numbers in selectable versus friction-plate one-way clutches
Figure 59: Schematic of ratchet design in selectable clutch
Figure 60: Drag torque reduction, friction packs versus selectable clutches
Figure 61: BorgWarner accumulator control solenoid
Figure 62: Schematic of normally-engaged clutch
Figure 63: NEC start performance versus baseline transmission with electric hydraulic pump
Figure 64: Performance of a magneto-elastic torque sensor
Figure 65: Comparison of baseline transmission and one with the magneto-elastic sensor control strategy
Figure 66: Tiptronic shifter on a 2003 Porsche 911
Figure 67: Electronically controlled clutch slip step response
Figure 68: Clutch slip control hysteresis response
Figure 69: Bosch TEHCM seen from underneath a GM 6L80 automatic transmission
Figure 70: Controlled torque converter clutch slip during acceleration tip-in
Figure 71: General Motors GF6 transmission
Figure 72: Mazda SKYACTIV-Drive transmission
Figure 73: Linearity and responsiveness of the SKYACTIV-Drive with a five-speed automatic
Figure 74: Antonov TX6 automated transmission
Figure 75: Average fuel economy improvements by transmission component on the 7G-Tronic Plus
Figure 76: Mercedes-Benz 7G-Tronic Plus automatic transmission
Figure 77: Second-generation ZF 8HP automatic transmission
Figure 78: ZF 9HP
Figure 79: Global automatic transmissions market forecast (millions), 2014 to 2021
Figure 80: Easytronic clutch actuator
Figure 81: Zeroshift synchronisers/drive rings
Figure 82: Component inventory in 7-speed manual, DQ200 DSG and MCA
Figure 83: Comparison of baseline and forced dry-clutch cooling
Figure 84: Controlled cooling simulation during full-throttle launch
Figure 85: Hill start simulation with dry-clutch friction materials
Figure 86: Drag loss advances in wet clutch friction materials
Figure 87: Energy requirements of valve hydraulic versus pump actuation
Figure 88: Level of end-of-line rejects before and after the introduction of an automated design process for robustness
Figure 89: Clutch fill time with the new-generation Tremec solenoid valve
Figure 90: Torque interruption during DCT ratio shift
Figure 91: Torque boost DCT ratio shift
Figure 92: Getrag six-speed DSG250
Figure 93: Comparison of conventional and supported shift
Figure 94: Comparison of torque delivery during conventional and supported upshift
Figure 95: Schematic of FINEMECH ten-speed DCT concept
Figure 96: Dry- and wet-clutch DCT production forecast to 2018
Figure 97: Audi Multitronic link-plate chain and variator
Figure 98: Schematic of RotorCVT
Figure 99: Sources of efficiency losses within the variator of a belt-driven CVT
Figure 100: Comparison of torque delivery during conventional and supported upshift
Figure 101: Sources of efficiency losses in a belt-driven CVT
Figure 102: The effects of over-clamping on efficiency of a CVT
Figure 103: Jatco CVT7
Figure 104: Jatco stop-start launch assist brake compared to vehicle brakes or no braking
Figure 105: Schematic of the CVP
Figure 106: VariGlide transmission cross-section
Figure 107: Ratio spread comparison: CVP versus Lepelletier design six-speed
Figure 108: Schematic of the Ultimate Transmissions TBox IVT
Figure 109: Time speed curve: T-Box IVT versus J1 five-speed manual
Figure 110: : Engine speed over time: T-Box IVT versus J1 five-speed manual
Figure 111: CVT market shares and volume (millions), 2000 to 2013
Figure 112: Schematic of Toyota series/parallel hybrid-electric powertrain
Figure 113: Torque Auto Technologies compound planetary hybrid transmission
Figure 114: ZF 8P75PH plug-in hybrid transmission
Figure 115: Customer rating of stop-start launch performance compared to baseline
Figure 116: FEV 7H-AMT hybrid transmission
Figure 117: Getrag PowerShift 7HDT300 power-split hybrid drivetrain
Figure 118: Jatco CVT8 Hybrid transmission
Figure 119: Schematic of General Motors Voltec drivetrain
Figure 120: AVL Future Hybrid Transmission operating modes
Figure 121: Punch Powerglide hybrid transmission power flow diagram
Figure 122: Punch Powerglide hybrid transmission power flow diagram
Figure 123: CAD model of the Hofer powertrain hybrid transmission concept
Figure 124: Schematic of Magna Powertrain integrated hybrid traction module
Figure 125: Schaeffler 48V electric drive axle with torque vectoring
Figure 126: Engine downsizing with Torotrak Flybrid KERS
Figure 127: Hybrid market penetration in major markets, 2015 to 2021
Figure 128: Efficiency map, wheel torque versus vehicle speed, two-speed transmission
Figure 129: Efficiency map, wheel torque versus vehicle speed, three-speed transmission
Figure 130: Optimum EV transmission ratios for each performance requirement
Figure 131: BorgWarner 31-03 eGearDrive single-speed transmission 1
Figure 132: Xtrac single-speed EV transmission with integrated differential 1
Figure 133: Continental electric axle drive 1
Figure 134: Schaeffler transverse, two-speed electric drive axle 1
Figure 135: IAV DrivePacEV80 1
Figure 136: GKN eAxle efficiency versus motor speed at 100Nm 1
Figure 137: GKN two-speed eAxle 1
Figure 138: Antonov three-speed EV transmission 1
Figure 139: Exploded view of the SST three-speed EV transmission 1
Figure 140: MSYS three-speed electric drive 1
Figure 141: Oerlikon Graziano-Vocis multispeed-speed EV transmission 1
Figure 142: Global light vehicle transmissions sales (millions) forecast to 2020 1
Figure 143: Global transmission production forecast by type, 2013 to 2024 1
Figure 144: Global CVT market (millions) forecast to 2020 1
Figure 145: Global transmissions type forecasts (millions) to 2018 by region 1
Figure 146: Global stop-start technology production, 2009 to 2024 1
Figure 147: Market penetrations and volumes of stop-start technology, 2015 to 2021 1
Figure 148: Transmission installation forecasts by type in Europe, 2012 to 2017 1
Figure 149: European CVT market (millions) forecast to 2020 1
Figure 150: Changes in market share of transmission types in Europe, 2012 to 2017 1
Figure 151: Transmission installation forecasts by type in North America, 2012 to 2017 1
Figure 152: Front-wheel drive transmission installation forecasts by type in North America, 2012 to 2017 1
Figure 153: Rear-wheel drive transmission installation forecasts by type in North America, 2012 to 2017 1
Figure 154: North American CVT market (millions) forecast to 2020 1
Figure 155: Changes in market share of transmission types in North America, 2012 to 2017 1
Figure 156: Transmission installation forecasts by type in Japan & S. Korea, 2012 to 2017 1
Figure 157: Japan and rest of Asia CVT market (millions) forecast to 2020 1
Figure 158: Changes in market share of transmission types in Japan & S. Korea, 2012 to 2017 1
Figure 159: Transmission installation forecasts by type in Greater China, 2012 to 2017 1
Figure 160: CVT market (millions) in China forecast to 2020 1
Figure 161: Changes in market share of transmission types in Greater China, 2012 to 2017 1
Figure 162: Transmission installation forecasts by type in South America, 2012 to 2017 1
Figure 163: Changes in market share of transmission types in South America, 2012 to 2017 1

Note: Product cover images may vary from those shown
3 of 4

Loading
LOADING...

4 of 4
- Aisin Seiki
- BorgWarner
- Chongqing Tsingshan
- Delphi
- Eaton
- Getrag
- INA
- JATCO (Japanese Automatic Transmission Company)
- Magneti Marelli
- Oerlikon Graziano
- Shaanxi Fast Auto Drive Group Company
- Valeo
- ZF Friedrichshafen AG
- Zhejiang Wanliyang Transmission
Note: Product cover images may vary from those shown
5 of 4
Note: Product cover images may vary from those shown
Adroll
adroll