公开(公告)号：US20050201567A1

公开(公告)日：2005-09-15

申请号：US11077672

申请日：2005-03-10

申请人： Alan Browne ,  Donald Nefske ,  Shung Sung

发明人： Alan Browne ,  Donald Nefske ,  Shung Sung

IPC分类号： A61F11/06 ,  G10K11/16 ,  H03B29/00

CPC分类号： G10K11/178

摘要： An exhaust system includes an exhaust conduit; a piezoelectric patch secured to the exhaust conduit; a sensor in operative communication with the exhaust conduit; and a controller in operative communication with the piezoelectric patch and the sensor, wherein the controller is configured to provide a signal to the piezoelectric patch and modify a sound emitted from the exhaust system. A method includes producing an exhaust gas in an exhaust conduit of an exhaust system; measuring an acoustic property of the exhaust gas, an acoustic property of the exhaust conduit, or a combination comprising at least one of the foregoing acoustic properties; applying an electrical signal to a piezoelectric patch, wherein the piezoelectric patch is secured to the exhaust conduit; and deforming the piezoelectric patch mechanically to modulate a sound emitted from the exhaust system.

摘要翻译： 排气系统包括排气管道; 固定到排气导管的压电贴片; 传感器，其与所述排气管道可操作地连通; 以及与所述压电贴片和所述传感器可操作地通信的控制器，其中所述控制器被配置为向所述压电贴片提供信号并修改从所述排气系统发出的声音。 一种方法包括在排气系统的排气管道中产生废气; 测量废气的声学特性，排气导管的声学特性或包括上述声学特性中的至少一个的组合; 将电信号施加到压电贴片，其中所述压电贴片固定到所述排气导管; 并且机械地使压电贴片变形以调制从排气系统发出的声音。