| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide an exhaust bypass valve capable of being reliably closed, even under a large exhaust pressure, even when an actuator is not enlarged. <P>SOLUTION: An exhaust bypass valve 40 includes a lever ratio variable mechanism 50 capable of varying a lever ratio (L1/L2) being a ratio of a lever length L1 of an arm 42 to a lever length L2 of a lever 43 by changing the lever length L2 of the lever 43 to be longer as the arm 42 and the lever 43 turn to a closing side. The lever ratio variable mechanism 50 includes a pin 51 connected to an actuator and a circular arc-like slit 52 which is provided at the lever 43 and with which the pin 51 is engaged. The lever length L2 of the lever 43 is changed so as to be longer as the arm 42 and the lever 43 turn to the closing side, by moving the pin 51 in a direction away from a turning shaft 44 along the slit 52 when the arm 42 and the lever 43 turn to the closing side. <P>COPYRIGHT: (C)2013,JPO&INPIT |
