초록 ▼

The drive assembly includes one or more motors (103, 104) driving at least a pair of continuously variable ratio transmission devices (101, 102) which each drive a driving wheel or driving axle of the vehicle. Each transmission device includes a planetary gear (3) whose reaction element, preferably

The drive assembly includes one or more motors (103, 104) driving at least a pair of continuously variable ratio transmission devices (101, 102) which each drive a driving wheel or driving axle of the vehicle. Each transmission device includes a planetary gear (3) whose reaction element, preferably the ring gear with an inner toothing, is connected to the rotor of a pump through which a hydraulic circuit passes provided with at least an adjustable valve (63) for adjusting the speed and/or the torque of the output shaft (27), in particular to facilitate the attainment of an operating speed for the motor when starting. The hydraulic circuits of the two transmission devices are interconnected by hydraulic lines (105, 107), which assures a differential effect between the two wheels concerned. One of these lines may include an adjustable valve (109) for limiting or blocking the differential effect.

대표청구항 ▼

The drive assembly includes one or more motors (103, 104) driving at least a pair of continuously variable ratio transmission devices (101, 102) which each drive a driving wheel or driving axle of the vehicle. Each transmission device includes a planetary gear (3) whose reaction element, preferably

The drive assembly includes one or more motors (103, 104) driving at least a pair of continuously variable ratio transmission devices (101, 102) which each drive a driving wheel or driving axle of the vehicle. Each transmission device includes a planetary gear (3) whose reaction element, preferably the ring gear with an inner toothing, is connected to the rotor of a pump through which a hydraulic circuit passes provided with at least an adjustable valve (63) for adjusting the speed and/or the torque of the output shaft (27), in particular to facilitate the attainment of an operating speed for the motor when starting. The hydraulic circuits of the two transmission devices are interconnected by hydraulic lines (105, 107), which assures a differential effect between the two wheels concerned. One of these lines may include an adjustable valve (109) for limiting or blocking the differential effect. other by one-half of a number of teeth n. 13. A method of causing a drive member and a driven member, which are spaced from each other, to rotate in synchronism with each other, the method comprising the steps of: providing said drive member with a drive member toothed pulley; providing said driven member with a driven member toothed pulley; passing a timing belt over said drive member and said driven member to engage said drive member toothed pulley and said driven member toothed pulley, respectively, dividing a single timing belt to form two narrow belt parts; arranging said two narrow belt parts of said timing belt so as to be side by side each other in an axial direction of said drive member or said driven member; and canceling an eccentricity component of a first of said two narrow belt parts to cancel an eccentricity component of a second of said two narrow belt parts during rotation.