| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To achieve switching between the contact state where a driving cam and a rocker arm abut on each other and the non-contact state without abutting only by one electromagnetic actuator. <P>SOLUTION: This variable valve train 9 includes: a first spiral groove 32; a second spiral groove 37; an engaging member 40; and a driving device 50. The first spiral groove 32 and the second spiral groove 37 are respectively provided to rotate together with a cam shaft 15, extended spirally in the circumferential direction of the cam shaft 15, and made different from each other right and left in the spiral advance direction. The engaging member 40 is provided to displace in the intersecting directions intersecting the lateral direction, and includes a first lock-in part 42 and a second lock-in part 47 which are caused to alternatively lock in the first spiral groove 32 and the second spiral groove 37 by displacement in one intersecting direction and the other intersecting direction. Further the driving device 50 includes only one electromagnetic actuator 51, thereby driving the engaging member 40 in one intersecting direction and in the other intersecting direction. <P>COPYRIGHT: (C)2011,JPO&INPIT</p> |
