Sizing the drive system - Propulsion Systems for Hybrid Vehicles - page 153

Table 4.4 Types of automatic transmissions

Manufacturer Transmission Mass Application Architecture Unique
features

Aisen AW 55-50SN 89 kg FWD Simpson Double pinion

epicyclic gear 5-speed

Aisen AW A750E 89 kg RWD Simpson Double planet

epicycle gear 5-speed

ZF 6HP26 84 kg RWD Lepelletier Ravigneaux

gear set 6-speed

Integrated
TCU

In Figure 4.4, clutches (Cs), brakes (Bs), and one-way-clutches (OWC, Fs) are
shown schematically tied to the transmission case with ground symbols. The main
shaft (input) and counter shaft (output) are lines of symmetry in the schematic. Clutch
C1 is always the transmission input clutch on the turbine side of the torque converter.
The torque converter impeller and turbine are locked via the lock-up clutch (L/U).
Electrical connections to the M/G are via the stator of the electric machine
packaged around the torque converter. The M/G rotor is mounted to the torque
converter at the flex plate (impeller) and aligned with the torque converter into a
finished assembly at the torque converter assembly plant. M/G rotor encoder
assemblies would also be mounted and aligned at the torque converter plant. The

Electrical

B3 F2 B2 B1 Stator

LUC

C2 C1 Rotor

R2
C2
C11

C11

S11

S11

Input

F1

B5 B4

C3

Output

Figure 4.4 Simpson type stepped automatic transmission