Mechanical Transmission Performance; Mechanical Transmission - Electric Controlled Hydraulic Unit - Chery QQ Service Manual

The electronically controlled hydraulic system mounted on the transmission is comprised of two
transmission mechanisms:
à Transmission mechanism for gear position selection and speed change
à Transmission mechanism for clutch and hydraulic unit
The entire hydraulic system is connected with transmission and engine computers.
Gear position selection is implemented through operating the gearshift handle:
à Automatic mode: the transmission computer carries out speed change according to the predetermined
vehicle control policy.
à Manual mode: the driver sends a signal to the gearshift lever and further to the transmission computer
for implementation of speed change.
When the vehicle speed is changed, the transmission computer will control the engine torque to restrict
vibration so that the driver can place his/her foot onto the accelerator pedal.
This automated mechanical transmission employs the automatic mode based on the DP0 design, which
integrates control methods suitable for concrete drive modes and road surfaces.
The automated mechanical transmission is based on traditional manual transmission equipped with an
electronically controlled hydraulic unit, thus realizing automatic five-speed transmission.
Overview:
1. Clutch
2. Pump
3. Oil tank
4. Energy storage
5. Transmission module
6. Low-pressure pipeline
7. High-pressure pipeline
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CHERY SQR7080 EZ Drive SERVICE MANUAL

MECHANICAL TRANSMISSION PERFORMANCE

MECHANICAL TRANSMISSION
– ELECTRIC CONTROLLED HYDRAULIC UNIT
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