| 摘要 |
<p>According to the method the crossover phase of the friction clutches is performed by defining a linear torque profile ( C F,dis ) for the first friction clutch (20) having a given initial value ( C F,dis (0)) and a zero final value ( C F,dis ( t f¡ )), a linear torque profile ( C F,inn ) for the second friction clutch (24) having a zero initial value ( C F,inn (0)) and a given final value ( C F,inn ( t f¡ )), and a linear torque profile ( C m ) for the engine having a given initial value ( Cm (0)) and a given final value ( Cm ( t fi )). The final value ( C F,inn ( t fi )) of the torque profile of the second friction clutch (24) is calculated, the initial value ( Cm (0)) of the engine torque being known by determining a final value of the longitudinal acceleration ( a x ) of the vehicle equal to a given percentage of the initial value. The final value ( Cm ( t fi )) of the engine torque profile is calculated, the final value ( C F,inn ( t fi )) of the torque profile of the second friction clutch (24), being known on the basis of the final value determined for the longitudinal acceleration ( a x ) of the vehicle. The initial value ( C F,dis (0)) of the torque profile of the first friction clutch (20) is chosen so as to be greater than a minimum value C F,dis (0) calculated by determining the condition of synchronism of the driving shaft (22) and of the first primary shaft (12).</p> |
