Description
As automatic transmissions have developed, they have decreased in size and their structures are more compact. At the same time the gear count has risen to even as high as 9 gears, and their efficiency has caught up with other transmission types. Due to this, the technicians need to update their knowledge on “traditional” automatic transmissions.
Presentation of different transmissions
Structure and gear ratios of an automatic transmission
Torque converter, operation and hydraulic control
Planetary gear sets and operation
Planetary gear sets’ clutches and brakes
Hydraulic pressure regulation levels and shifting pressure control
Other components of the hydraulic control system
The transmission’s control unit and shifting programme
Electrohydraulic control
Speed, temperature and pressure
Driver’s functions and transmission control
