Crankshaft having balance weight
AssigneesHyundai Motor Company, Kia Motors Corporation
InventorJae Kwon LEE
Life of this patent
Estimating the term…
Abstract
A crankshaft having a balance weight, the crankshaft a crank pin eccentric to a rotation axis of the crankshaft, a connecting rod connecting the crank pin and a piston, and a balance weight disposed to be opposite to the crank pin in the crankshaft, wherein the balance weight has radius which is a distance between the rotation axis of a crankshaft and an exterior circumferential surface of the balance weight, and wherein the radius of the balance weight is formed differently depending on a rotation direction of the balance weight.
Claims10
A crankshaft having a balance weight, the crankshaft comprising:
- a crank pin eccentric to a rotation axis of the crankshaft;
- a connecting rod connecting the crank pin and a piston;
- and
- a balance weight disposed to be opposite to the crank pin in the crankshaft,
- wherein the balance weight has radius which is a distance between the rotation axis of a crankshaft and an exterior circumferential surface of the balance weight, and
- wherein the radius of the balance weight is formed differently depending on a rotation direction of the balance weight.
An engine having a balance weight, the engine comprising:
- a crank pin eccentric to a rotation axis of a crankshaft;
- a connecting rod connecting the crank pin and a piston;
- and
- a balance weight disposed to be opposite to the crank pin in the crankshaft,
- wherein a Bottom Dead Center (BDC) line is formed to pass through the rotation axis of the crankshaft and a central axis of the crank pin,
- wherein in an exterior circumferential surface of the balance weight,
- first ranges respectively set in a rotation direction of the balance weight and in a rotation direction opposite to the rotation direction of the balance weight based on the BDC line are formed to have a first radius from the rotation axis,
- second ranges respectively set in the rotation direction of the balance weight and in the rotation direction opposite to the rotation direction of the balance weight in the first ranges are formed to have a second radius from the rotation axis,
- third ranges respectively set in the rotation direction of the balance weight and in the rotation direction opposite to the rotation direction of the balance weight in the second ranges are formed to have a third radius from the rotation axis,
- the first radius R1 being shorter than the second radius R2, and the second radius R2 being shorter than the third radius R3.
Dependencies are inferred from the claim text.