US 10,519,818 B2 · Valve duration control apparatus and engine provided with the same

Abstract

A continuous variable valve duration system may include a camshaft, a first cam portion including a first cam, into which the camshaft is inserted and of which a relative phase angle of the first cam with respect to the camshaft is variable, a rocker shaft disposed parallel to the camshaft, a first rocker arm rotatably disposed to the rocker shaft of which a first end contacts with the first cam and a second end is connected to a first valve, an inner bracket to transmit rotation of the camshaft to the first cam portion, a slider housing into which the inner bracket is rotatably inserted, on which a control hole is formed and on which a guide portion is formed for guiding movement of the slider housing, an eccentric shaft inserted into the control hole, and a control portion to selectively rotate the eccentric shaft.

Claims21

Dependent claims

A valve duration control system comprising:

a camshaft;
a first cam portion including a first cam, into which the camshaft is inserted and of which a relative phase angle of the first cam with respect to the camshaft is variable;
a rocker shaft disposed parallel to the camshaft;
a first rocker arm rotatably disposed to the rocker shaft of which a first end contacts with the first cam and a second end is connected to a first valve;
an inner bracket configured to transmit rotation of the camshaft to the first cam portion;
a slider housing into which the inner bracket is rotatably inserted, on which a control hole is formed and on which a guide portion is formed for guiding movement of the slider housing;
an eccentric shaft inserted into the control hole;
and
a control portion configured to rotate the eccentric shaft for the slider housing to be moved.

6 more elements

An engine comprising:

a camshaft;
a first cam portion including a first cam, of which the camshaft is inserted therein and of which relative phase angle of the first cam with respect to the camshaft is variable;
a rocker shaft disposed parallel to the camshaft;
a first rocker arm rotatably disposed on the rocker shaft and of which a first end contacts the first cam and a second end is connected to a first valve;
an inner bracket configured to transmit rotation of the camshaft to the first cam portion;
a slider housing of which the inner bracket is rotatably inserted therein, of which a control hole is formed thereto, and of which a guide portion is formed thereto for guiding movement of the slider housing;
an eccentric shaft inserted into the control hole;
a control portion configured to rotate the eccentric shaft for the slider housing to be moved;
and
a cam cap supporting the eccentric shaft and mounted to a cylinder head of the engine.

7 more elements

Dependencies are inferred from the claim text.

Valve duration control apparatus and engine provided with the same

Life of this patent

Valve duration control apparatus and engine provided with the same

Life of this patent

Abstract

Claims21