Manual gearboxes
Transmission system for motorcar
Article REF: BM2586 V1
Manual gearboxes
Transmission system for motorcar

Authors : Elian BARON, Philippe PESCAROU

Publication date: January 10, 2016, Review date: June 29, 2023 | Lire en français

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4. Manual gearboxes

Manual gearboxes are gearboxes where gear changes and clutch (dis)engagement are performed by the driver. Today, they are all synchronized.

One way of classifying manual gearboxes is to consider the number of meshing gear pairs involved in power transmission for a given ratio (in the case of automotive transmissions, reverse gear and final gear are not included in this calculation, even if they are integrated into the gearbox).

4.1 Manual gearbox configurations

There are three types of configuration, illustrated on figure 13 for a 4-speed gearbox:

  • single-stage (a single pair of meshing gears transmits power);...

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