Twin clutch automated transmission with integrated transfer case

A twin-clutch transmission for use in a motor vehicle having an engine and first and second drivelines;

• a first output shaft adapted for connection to the first driveline;
• a second output shaft adapted for connection to the second driveline;
• a first input shaft;
• a second input shaft;
• a first engine clutch operable for establishing a releasable drive connection between the engine and said first input shaft;
• a second engine clutch operable for establishing a releasable drive connection between the engine an d said second input shaft;
• a geartrain including first and second output gears fixed to a mainshaft, a first speed gear supported on said first input shaft and meshed with said first output gear, a second speed gear supported on said second input shaft and meshed with said first output gear, a third speed gear supported on said first input shaft and meshed with said second output gear, and a fourth speed gear supported on said second input shaft and meshed with said second output gear;
• an interaxle differential driven by said mainshaft and interconnecting said first and second out put shafts;
• a first shift clutch operable for releasable coupling said first and third speed gears to said first input shaft;
• a second shift clutch operable for releasably coupling said second and fourth speed gears to said second input shaft;
• a first motor/generator connected to said first input shaft;
• a second motor/generator connected to said second input shaft;
• and
• a transmission controller for controlling coordinated actuation of said first and second engine clutches, said first and second shift clutches and said first and second motor/generators to cause powershift sequential gear shifts, such that when one of said first and second input shafts is released from driven connection with the engine, said motor/generator associated with the released one of said first and second input shafts is actuated to synchronize the rotary speed of the released one of said first and second input shaft with said mainshaft.

A twin-clutch transmission for use in a motor vehicle having an engine and first and second drivelines, comprising:

• a first input shaft rotatably supporting a first speed gear;
• a second input shaft rotatably supporting a second speed gear;
• a mainshaft having an output gear fixed thereto which is meshed with said first and second speed gears;
• a first engine clutch operable for establishing a releasable drive connection between the engine and said first input shaft;
• a first shift clutch operable for releaseably coupling said first speed gear to said first input shaft to establish a drive connection between said first input shaft and said mainshaft;
• a second engine clutch operable for establishing a releasable drive connection between the engine and said second input shaft;
• a second shift clutch operable for releasably coupling said second speed gear to said second input shaft to establish a drive connection between said second input shaft and said mainshaft;
• a first output shaft driven by said mainshaft and adapted for connection to the first driveline;
• a second output shaft adapted for connection to the second driveline;
• a transfer clutch for transferring drive torque from said first output shaft to said second output shaft;
• a first motor/generator connected to said first input shaft;
• a second motor/generator connected to said second input shaft;
• and
• a controller for controlling actuation of said first and second motor/generators.