| 摘要 |
<P>PROBLEM TO BE SOLVED: To obtain excellent accelerator operation feeling by suppressing an impact when an upstream side throttle valve and downstream side throttle valve are integrated in a prescribed opening or more of the upstream side throttle valve. <P>SOLUTION: A second throttle shaft is coupled to a first throttle shaft 6 via a link lever 15. A biasing spring 19 for biasing a second throttle lever 14 and link lever 15 in a mutually opposite rotating direction therebetween is provided to weaken biasing force in response to valve opening of the first throttle valve 6 in a range where the first throttle valve 6 is less than a prescribed opening. The link lever 15 is biased in a direction of closing the second throttle valve 8 by the second return spring 18. The second throttle valve 8 is biased in a valve closing direction by the second return spring 18 via the biasing spring 19. <P>COPYRIGHT: (C)2012,JPO&INPIT |
