Patent ID: 8919317

Claim:
An inertia incremental apparatus for a flywheel of an engine, comprising: a drive plate integrally connected to a crankshaft; a flywheel rotatably connected to the crankshaft via a planetary gear set, receiving a rotational force from the drive plate through the planetary gear set, and rotating relatively to the crankshaft; and a stiffness-providing unit disposed on a path of transmitting the rotational force between the drive plate and the flywheel; wherein the planetary gear set operably disposed between the drive plate and the flywheel including a first rotary element connected to the drive plate, a second rotary element connected to the flywheel, and a third rotary element which is continuously stationary, wherein the second rotary element connected to the flywheel increases in speed with respect to the first rotary element connected to the drive plate; and wherein the stiffness-providing unit includes an elastic member that elastically extends or retracts with respect to relative rotation of two rotary elements out of the three rotary elements to adjust the stiffness between the crankshaft and the flywheel, wherein the two rotary elements are disposed to be rotatable relatively to each other.