| 摘要 |
<p>PROBLEM TO BE SOLVED: To provide a valve timing changing device which can stop the relative turning of a timing pulley and a camshaft at any position and reduce generation of noise. SOLUTION: This valve timing changing device is provided with a timing pulley 7, a camshaft 1, a second rotor 10, which can rotate and cannot axially move relative to the camshaft 1, and a rotation control means 25, which controls the rotation of the second rotor 10 by electromagnetic force without contacting this second rotor 10. The timing pulley 7, camshaft 1 and second rotor 10 are connected to each other through an irreversible linking means 35, in such a way that torque can be transmitted from the timing pulley 8 to the camshaft 1 and the second rotor 10, but is cannot be transmitted from the second rotor 10 to the timing pulley 7 and camshaft 1, and when relative rotation is generated between the timing pulley 7 and the second rotor 10, the camshaft 1 is rotated relatively with respect to the timing pulley 7.</p> |
