公开(公告)号：US5801343A

公开(公告)日：1998-09-01

申请号：US481445

申请日：1995-06-16

申请人： Mitsuro Suzuki ,  Kazunari Ohno ,  Kunihiko Fujiwara ,  Tetsuo Kato ,  Takanori Morishita

发明人： Mitsuro Suzuki ,  Kazunari Ohno ,  Kunihiko Fujiwara ,  Tetsuo Kato ,  Takanori Morishita

IPC分类号： F01N1/02 ,  F01N1/08 ,  F01N1/16 ,  F01N13/08 ,  F01N1/00

CPC分类号： F01N13/085 ,  F01N1/02 ,  F01N1/084 ,  F01N1/089 ,  F01N1/165 ,  F01N1/166 ,  F01N2290/10 ,  F01N2490/155

摘要： In a muffler for an internal combustion engine which is provided with a valve capable of closing and opening an open end of a by-pass inner pipe, the opening and closing operation of the valve is performed by means of the exhaust gas pressure, without being affected by external factors. Also, the structure is simple and easy to be assembled. On a fixed shaft (36) supported proximate an open end (28a) of a by-pass inner pipe (28) is a valve (32), rotatably mounted. The valve (32) is urged against the open end (28a) by a coil spring (42), and when fitted in a flange part (38), it closes the open end (28a). When the revolving speed of internal combustion engine is low, the pressure inside the by-pass inner pipe (28) is smaller than the operative force which is an addition of the urging force by the coil spring (42) and the external pressure. The open end (28a) is therefore closed. On the other hand, when the revolving speed rises and the pressure has increased to a predetermined pressure, their relation is reversed. Specifically, the valve retracts from the open end (28a), thereby placing the by-pass inner pipe (28) in a communicated condition.

摘要翻译： PCT No.PCT / JP94 / 01889第 371日期：1995年6月19日 102（e）1995年6月19日PCT PCT 1994年11月9日PCT公布。 出版物WO95 / 13460 日期1995年5月18日在内燃机用消音器中，设有能够封闭旁通内管的开口的阀，阀的打开和关闭操作通过排气 压力，不受外界因素的影响。 此外，结构简单易于组装。 在靠近旁通内管（28）的开口端（28a）支撑的固定轴（36）上是可旋转地安装的阀（32）。 阀（32）通过螺旋弹簧（42）推靠在开放端（28a）上，并且当装配在凸缘部分（38）中时，其封闭开口端（28a）。 当内燃机的转速低时，旁通内管28内的压力小于由螺旋弹簧42施加的作用力和外部压力的作用力。 因此，开放端（28a）是封闭的。 另一方面，当转速上升并且压力增加到预定压力时，它们的关系相反。 具体地，阀从开口端部（28a）缩回，从而使旁通内管（28）处于连通状态。

公开(公告)号：US5971098A

公开(公告)日：1999-10-26

申请号：US888

申请日：1997-12-30

申请人： Mitsuro Suzuki ,  Kazunari Ohno ,  Kunihiko Fujiwara ,  Tetsuo Kato ,  Takanori Morishita

发明人： Mitsuro Suzuki ,  Kazunari Ohno ,  Kunihiko Fujiwara ,  Tetsuo Kato ,  Takanori Morishita

IPC分类号： F01N1/02 ,  F01N1/08 ,  F01N1/16 ,  F01N13/08 ,  F01N1/00

CPC分类号： F01N13/085 ,  F01N1/02 ,  F01N1/084 ,  F01N1/089 ,  F01N1/165 ,  F01N1/166 ,  F01N2290/10 ,  F01N2490/155

摘要： In a muffler for internal combustion engine which is provided with a valve capable of closing and opening an open end of by-pass inner pipe, the opening and closing operation of the valve is performed via the exhaust gas pressure, without being affected by external factors. Also, the structure is simple and easy to be assembled. On a fixed shaft (36) supported in the vicinity of an open end (28a) of a by-pass inner pipe (28) is a valve (32) rotatably mounted. The valve (32) is urged against the open end (28a) by a coil spring (42), and when fitted in a flange part (38), it closes the open end (28a). When the revolving speed of the internal combustion engine is low, the pressure inside the by-pass inner pipe (28) is smaller than the operative force which is an addition of the urging force by the coil spring (42) and the external pressure. The open end (28a) is therefore closed. On the other hand, when the revolving speed rises and the pressure has increased to a predetermined pressure, their relation is reversed. Specifically, the valve retracts from the open end (28a) thereby placing the by-pass inner pipe (28) in a communicated condition.

摘要翻译： 在内燃机用消音器中，设有能够封闭旁通内管的开放端的阀，阀的打开和关闭操作经由废气压力进行，而不受外部因素的影响 。 此外，结构简单易于组装。 在旁通内管（28）的开口端（28a）附近的固定轴（36）上是可旋转地安装的阀（32）。 阀（32）通过螺旋弹簧（42）推靠在开放端（28a）上，并且当装配在凸缘部分（38）中时，其封闭开口端（28a）。 当内燃机的转速低时，旁通内管28内的压力小于由螺旋弹簧42施加的作用力和外部压力的作用力。 因此，开放端（28a）是封闭的。 另一方面，当转速上升并且压力增加到预定压力时，它们的关系相反。 具体地，阀从开口端（28a）缩回，从而使旁通内管（28）处于连通状态。