Patent ID: 7481128

Claim:
A gearshift unit for a transmission of a motor vehicle, with an auxiliary unit ( 23 ), the gear shift unit including: a gearshift lever ( 31 ), by which a driver of the motor vehicle can perform gearshifts in the transmission ( 11 ) a gearshift power-assist unit ( 28 , 30 , 34 , 35 ), which is capable of exerting an additional shift force and a control device ( 37 ), which is capable of detecting an operation of the gearshift lever ( 31 ) and, depending thereon, can activate the gearshift power-assist unit ( 28 , 30 , 34 , 35 ), the control device ( 37 ) being capable of actuating the gearshift power-assist unit ( 28 , 30 , 34 , 35 ) when the gearshift lever ( 31 ) is operated to perform a gearshift, so that the additional shift force assists a shift force exerted by the driver of the vehicle, the control device ( 37 ) including means for detecting a significant increase in a moment of inertia, in excess of a normal amount required for an acceleration of masses during the shifting of a gear in the transmission ( 11 ) with a drive connection to a power unit ( 40 ) being interrupted and for activating the gearshift power-assist unit ( 28 , 30 , 34 , 35 ) to assist the shift force only when no significant increase has been detected.