Saic Motor Corporation Limited

Bright Dairy & Food Co., Ltd.

Chengjie Ma

Jian Ding

Zhengmin Gu

Jian Wang

Jun Sun

Hongxiang Leng

Peng Zhang

Jing Gu

Jiang Wu

Benheng Guo

Feng Hang

Jin Han

Zhengjun Wu

Pengjun Zhang

Xianjun Ye

A transmission control system for a hybrid-power driving system includes at least a gear shifting actuation module to control engagement of specific gearwheels and a clutch actuation module to control a clutch that couples an engine to the transmission. Gear shifts are required for each of the engine and the electric motor in the hybrid-power driving system. The control system minimizes power loss when a gear shift is occurring for the engine or the electric motor. By selectively controlling the clutch and engagement of specific gearwheels, power loss associated with a gear shift for one of these power sources can be directly offset by using the other power source.

Control systems and methods for transmission of hybrid power vehicle

A controlling apparatus and method for an electric drive transmission used in a dual-motor electric vehicle are disclosed, wherein when the second motor is in the zero torque state, the synchronizer is shifted to a neutral position, the second motor the required torque being kept to be zero; after shifted to the neutral position, if the target gear position is the neutral position, gearshifting is completed, an if the target gear position is not the neutral position, speed control to the second motor is conducted to adjust its speed towards a target speed; once the second motor is adjusted to the target speed, the second motor is subjected to zero torque control, the second motor the required torque being zero; once the second motor comes into a zero torque state, the synchronizer is shifted to a target gear position, the required torque of the second motor being kept to be zero; once the synchronizer is located in the target gear position, the required torque of the second motor changes towards a target value at a proper changing rate; once the second motor real torque and is equal to or larger than target torque, gearshifting is judged as completed. Loss in wheel driving torque caused by the second motor in the whole gearshifting procedure is compensated by the first motor, so that gearshifting without power interruption can be achieved.

Controlling apparatus and method for electric drive transmission of dual-motor electric vehicle

A transmission control system for a hybrid-power driving system includes at least a gear shifting actuation module to control engagement of specific gearwheels and a clutch actuation module to control a clutch that couples an engine to the transmission. Gear shifts are required for each of the engine and the electric motor in the hybrid-power driving system. By selectively controlling the clutch and engagement of specific gearwheels, the transmission control system can start the engine when the vehicle is initially powered by the electric motor alone. Starting the internal combustion engine in this case switches the vehicle from a pure motor driving mode to a hybrid driving mode. Additionally, the transmission control system can start the engine when the vehicle is in a parked state, for example, to put the vehicle in a battery charging mode for the electric motor.

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Shanghai, China

Chengjie Ma