Transmission Description - Overview: Overview
The 10R80 MHT automatic transmission is a hybrid 10-speed electronically controlled transmission with a main control valve body unit with 8 solenoids, a transmission fluid auxiliary pump containing 1 solenoid, and a torque converter. Gear selection is achieved by the control of transmission fluid to operate various internal clutches. The PCM operates the electrical components and provides control of gear selection, shift pressure and torque converter slip. The SOBDMC controls the hybrid drive unit functions.
This transmission includes:
- Hybrid drive unit with a electric motor and a integral disconnect clutch
- Torque converter with an integral converter clutch
- Electronic shift and pressure controls
- Four planetary gearsets
- Two multi-disc holding clutches
- Four multi-plate drive clutches
- One one way holding clutch
- Main control valve body unit
- Transmission fluid auxiliary pump
The main control consists of a valve body assembly with solenoids inside the transmission and is controlled by a PCM. The PCM operates the electrical components to provide refined engagement feel, shift feel, and shift scheduling.
Engine power reaches the transmission by a torque converter with an integral clutch. The 10 forward gears and one reverse gear are obtained from 4 planetary gearsets.