VT2+: Further improving the fuel economy of the VT2 transmission
Gert-Jan Vogelaar
Punch Powertrain
pulleys
Introduction
•VT2 in the market
•Project approach •Transmission losses •Flexibility and range
•Idle stop and idle speed •Summary of improvements •Conclusions
Current VT2 Applications
Fuel consumption comparison -6,0%
-4,0%
-2,0%0,0%
2,0%
4,0%6,0%8,0%2008
20092010201120122013
DCT
AMT
VT2 Applications
Trend VT2
•VT2 applications keep on achieving better fuel economy •From 2011, as good as Manual Transmission •VT2 gets within range of DCTs and AMTs
Project approach
•Identify relevant working areas •Identify contribution of different losses •Attack the most contributing losses •Identify limiting factors on flexibility and range
•Select and improve critical components

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