| 摘要 |
<P>PROBLEM TO BE SOLVED: To accurately and precisely control an EGR valve and an intake throttle valve or an exhaust throttle valve with a simple configuration. <P>SOLUTION: An EGR valve 15 includes a motor 27 and a main pulley 29 driven by the motor. An intake throttle valve 13 (and/or an exhaust throttle valve) includes a driven pulley 30 rotating together with a valve element 18. The main pulley 29 and the driven pulley 30 are connected by a wire 34. Each of valves 13, 14, 15 is a butterfly valve, and the valve element 18 opens even when it is rotated in any direction from the totally closed state. Two driving parts 36, 37 having different outer peripheral profiles from each other are distributed on the main pulley 29 so as to differentiate interlocking relations of the intake and exhaust valves 13, 14 between the normal rotation and the reverse rotation of the valve element 18 of the EGR valve 15. <P>COPYRIGHT: (C)2013,JPO&INPIT |
