| 摘要 |
<p>A drive pulley, particularly for automotive auxiliary equipment, includes an input (12;56) for connection to an engine and an output (37;48), one of the input and the output comprising a hollow cylindrical member (38;68), whose outer surface constitutes a pulley belt engagement surface. The input and output are connected by a transmission system including an epicyclic gearset comprising two or more planet gears (10;52), which are carried by respective planet shafts (8;50) and are in mesh with a sun gear (6;58) and with an annulus gear (12;56). The planet shafts are connected to a common carrier (37;48). The input is connected to the annulus gear (12;56) and the output is connected to the carrier (37;48). The transmission system further includes two electric motor/generators, the rotors (17;62) of which are connected to the output and the sun gear, respectively, the electrical connections of the stators (16;64) of which are connected to a controller arranged selectively to control the flow of electrical power between them. The transmission is at least partially accommodated within the hollow cylindrical member (38;68). At least one of the motor/generators is remote from the hollow cylindrical member (38;68).</p> |
