Hybridized Manual Transmissions
Manual transmissions with innovative technologies
Manual transmissions combine highest internal efficiency with low weight, low cost and fun-to-drive in some applications. For these reasons they still play a big role in markets like Asia and South America that require cost-efficient transmissions, and in Europe, where many car owners are still willing to shift gears on their own.
However, there is a need to adapt manual transmissions technology to future technologies that enable even better fuel efficiency through advanced driver assistance systems (ADAS) and hybrid functions like recuperation, boosting and advanced sailing. GETRAG has developed a step-by-step approach to adapt manual transmissions to these needs.
The first step is to add an e-clutch, this improves comfort and enables decoupling the engine in situations where freewheeling can reduce fuel consumption. The e-clutch technology is based on the expertise that GETRAG has acquired for many years.
The second step is adding mild hybrid function using an e-machine that – again in analogy with current hybrid dual-clutch transmissions – is connected side-by-side to the output shaft. The advantage of the P3 architecture is that the e-motor can deliver traction power, even when the engine is decoupled by the e-clutch. This enables simple electric maneuverings like automatic parking, electric stop-and-go etc.
The third step on top is adding a module for automatic shifting, thus expanding the hybrid manual transmission to a hybrid automated manual transmission. This solution enables a partial torque fill-up through the e-motor while shifting, thus substantially improving shift comfort in everyday driving situations.
While the manual hybrid transmission is the most affordable way to open up the benefits of hybridization and ADAS, the automatic shift module adds automated shifts to this, while still being a very cost-effective solution for many use cases.
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|Max. torque capacity (in Nm)||215|
|Weight (in kg)||57|
|Installation length (in mm)||380|
|Input shaft - differential axial distance (in mm)||184|
|Gear speed ratio||4.51 - 6.01|