Method for performing gear shifting control on automated gear shifting transmission

Abstract

A method for performing gear shifting control on an automated gear shifting transmission. A torque conversion clutch device is placed in front of the transmission and includes: a hydraulic torque converter which has a pump impeller connected with a transmission shaft of a driving motor of an internal combustion engine configured for turbocharging, and a turbine connected with a middle shaft; a retarder of a rotor which is in transmission connection with the middle shaft; and a cut-off clutch configured to be an automated friction clutch and arranged between the middle shaft and an input shaft of the transmission, during traction and gear shafting, the input shaft of the transmission remains torque-free as far as possible through reduction of a load when gear shifting begins. To prevent weakening of motive force of the driving motor when traction and gear shifting finish and the load is established, the arrangement is that: in the circumstance of maintaining motor torque output by the driving motor, the reduction of the load on the input shaft is caused by absorbing correspondingly high retarding torque in the retarder, and the retarding torque absorbed from the retarder increases to above the motor torque of the driving motor at the beginning of traction and gear shifting, and reduces to zero when traction and gear shifting finish.

Description

technical field [0001] The invention relates to a method for the shift control of an automated gearshift transmission, in which a torque converter clutch (Wandlerschaltkupplung) transmission technology is preceded, the torque converter clutch comprising a hydraulic torque converter, It has a pump wheel connected to the drive shaft of the drive motor of a turbocharged internal combustion engine and a turbine wheel connected to the countershaft; it also includes a retarder with a rotor drive-connected to the countershaft; and a friction clutch designed as an automation and a separating clutch arranged between the countershaft and the input shaft of the shift transmission, wherein, during a traction shift (traction upshift or traction downshift), the input shaft of the shift transmission is dropped by the load that occurs at the start of the shift to keep it as moment-free as possible. Background technique [0002] Automated shift transmissions are being used more and more fre...

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