摘要:
The invention relates to a centrifugal clutch (20) with hysteresis, in which the clutch (20) comprises: an inner output shaft (22), an outer drive drum (32) mounted such that it can pivot on the inner output shaft (22), flyweights (42) mounted with the freedom to effect a radial translational movement on the drum (32), a flange (24) radially circumscribing the flyweights, the flange (24) being firmly attached to the inner output shaft (22), the movement of the flyweights (42) in contact with the flange (24) through a centrifugal effect causing the outer drive drum to engage with the inner output shaft. The invention further relates to an accessory front end and to a vehicle comprising such a clutch (20). The invention makes it possible to obtain a vehicle accessory front end in which the continuity of drive of the front end is ensured.
摘要:
The invention relates to a coupling device between a shaft (14) and a pulley (11) as well as to an engine block suitable for being installed in a motor vehicle. The shaft (14) and a pulley (11) can rotate relative to one another about an axis (15). According to the invention, the device includes a separate declutchable means (36, 37, 40, 42, 45, 50) for driving the shaft (14) by the pulley (11) only allowing the shaft (14) to be driven by the pulley (11) when the latter is rotating at a rotation speed that is higher than a predetermined rotation speed. The engine block includes a heat engine, a reversible alternator for starting the heat engine and generating electric power, an accessory, the heat engine and the reversible alternator being suitable for rotating the accessory by means of a belt. The engine block includes a coupling device according to the invention between an output shaft (14) of the heat engine and a pulley (11) driven by the belt (10).