Powertrain Technology
The 7G-TRONIC automatic transmission: high-tech in the powertrain
 
  Enlarge
  
1  Drive side – transferring engine torque to the transmission
2  Torque converter lock-up clutch with damping elements
3  Hydrodynamic torque converter
4  Shifting components with multi-plate clutch and gear sets of the planetary gear
5  Control and regulator unit, electronics and sensors integrated in the oil pan
6  Mechanical link to selector lever
7  Parking lock
8  Driving force – transferring torque to the drive axle
Faster, smoother shifting, and outstanding fuel economy: that was what the Daimler engineers aimed to achieve when they set out to design the
7G-TRONIC – the world’s first series production, seven-speed automatic transmission.
Using seven gear ratios makes it possible for the automatic transmission toretain the small increases in engine speed that are important for ensuring optimum gear ratios, while at the same time offering a larger ratio spread between the lowest and highest gears.
Since its launch in 2003, the transmission has become available in all Mercedes-Benz cars with six- and eight-cylinder engines and is designed to deliver 700 Nm of continuous torque. Depending on the vehicle model, the
7G-TRONIC cuts standard fuel consumption (NEDC) by up to 0.6 liters per
100 kilometers, and fuel savings of more than one liter per 100 kilometers are even possible in everyday driving.
Download
Print version of this article
pdf file
(187 kB)
© 2008 Daimler AG. All rights reserved.
Provider, Legal Notices and Terms, Privacy Statement