Crankshaft assembly with a centrifugal pendulum attached to the crankshaft
AssigneeSchaeffler Technologies AG & Co. KG
InventorsMathias Girnus, Pascal Strasser
Life of this patent
Estimating the term…
Abstract
A crankshaft assembly for a motor vehicle drive train, including a crankshaft segment and a centrifugal pendulum secured thereon, which has a carrier secured to the crankshaft segment and at least one pendulum mass that moves relative to the carrier along a predetermined track. The crankshaft assembly has a friction unit connected to the carrier, which rests on the at least one pendulum mass such that, with a relative movement of the pendulum mass in relation to the carrier, the friction unit applies a frictional torque on the pendulum mass counteracting the relative movement, wherein the friction unit extends over a peripheral section of less than 360°.
Claims19
A crankshaft assembly for a motor vehicle drive train, the crankshaft assembly comprising:
- a crankshaft segment;
- a centrifugal pendulum secured to the crankshaft segment, the centrifugal pendulum having a carrier that is secured to the crankshaft segment and at least one pendulum mass that moves relative to the carrier along a predetermined track;
- a friction device connected to the carrier which rests on the at least one pendulum mass such that, with a relative movement of the at least one pendulum mass in relation to the carrier, the friction device applies a frictional torque on the pendulum mass counteracting the relative movement;
- and
- the friction device extends over a peripheral section between 90° and 270°.
A crankshaft assembly for a motor vehicle drive train, the crankshaft assembly comprising:
- a crankshaft segment;
- a centrifugal pendulum secured to the crankshaft segment, the centrifugal pendulum having a carrier that is secured to the crankshaft segment and two pendulum masses that move relative to the carrier along a predetermined track;
- and
- a friction element connected to the carrier which rests on the pendulum masses such that, with a relative movement of the pendulum masses in relation to the carrier, the friction element applies a frictional torque on the pendulum mass counteracting the relative movement, wherein the friction element comprises a friction ring that is part of a friction device that extends over a peripheral section of less than 360° and presses the friction ring against the pendulum masses.
A crankshaft assembly for a motor vehicle drive train, the crankshaft assembly comprising:
- a crankshaft segment comprising a screw-on surface formed on an axial end face of the crankshaft segment;
- a centrifugal pendulum secured to the crankshaft segment, the centrifugal pendulum having a carrier that is secured to the crankshaft segment and at least one pendulum mass that moves relative to the carrier along a predetermined track;
- a friction device connected to the carrier which rests on the at least one pendulum mass such that, with a relative movement of the at least one pendulum mass in relation to the carrier, the friction device applies a frictional torque on the pendulum mass counteracting the relative movement;
- and
- the friction device extends over a peripheral section of less than 360°;
- wherein the friction device and the centrifugal pendulum are attached via a common securing device to the screw-on surface of the crankshaft segment.
Dependencies are inferred from the claim text.