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公开(公告)号：US4632216A
公开(公告)日：1986-12-30
申请号：US624935
申请日：1984-06-27
CPC分类号： F01N13/18 , B21D41/04 , F01N1/08 , F01N2470/02 , F01N2470/24 , F01N2470/30 , F01N2490/02
摘要： The present invention is directed to muffler apparatus and a method for making same. The apparatus includes inlet and outlet tubes with a plurality of baffles extending from the inlet and outlet tubes to a housing. The outlet tube has a constricted portion near its inlet end formed with creases and lobes and a flare at the end. Such constriction increases the housing to outlet tube area ratio of the muffler which results in advantageous attenuation characteristics. The process for making the muffler is simpler than known methods since the outlet tube is formed and baffles pressed onto it in a single step.
摘要翻译： 本发明涉及消声器装置及其制造方法。 该装置包括具有从入口管和出口管延伸到壳体的多个挡板的入口管和出口管。 出口管在其入口端附近具有收缩部分，其形成有折痕和裂片，并且在末端形成火炬。 这种收缩将壳体增加到消声器的出口管面积比，这导致有利的衰减特性。 制造消音器的过程比已知方法简单，因为出口管被形成并且挡板在单个步骤中被压在其上。
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公开(公告)号：US4558891A
公开(公告)日：1985-12-17
申请号：US513920
申请日：1983-07-14
CPC分类号： F01N13/1805 , F16L25/04 , Y10T24/1435 , Y10T24/1441
摘要： The specification discloses an improved clamp (20) for securing overlapping telescoped ends of adjacent tubes in an exhaust system, or the like, to form a substantially leakproof joint. The clamp (20) includes a circular band (26) and a bolt (32) having a curved end (34) secured thereto over a predetermined circumferential distance adjacent one end of the band, and a straight threaded end extending through an extension (40) secured adjacent to the opposite end of the band. A nut (44) is provided on the straight bolt end (38) for tightening against the extension (40) to draw the ends (28 and 30) of the band (26) together in near abutting relationship to engage the lap joint over a substantially continuous circumferential area in a second embodiment (60). The extension (62) can bridge the gap to serve as a guide for the other end of the band, or it can be an integral portion (72 and 74) of the band in a third embodiment (70).
摘要翻译： 本说明书公开了一种改进的夹具（20），用于将相邻管的重叠的伸缩端固定在排气系统等中，以形成基本上防漏的接头。 夹具（20）包括圆形带（26）和螺栓（32），螺栓（32）具有固定在其上的预定圆周距离的弯曲端（34），邻近带的一端，以及延伸穿过延伸部 ）固定在带的相对端附近。 螺母（44）设置在直螺栓端部（38）上，用于紧固延伸部（40），将带（26）的端部（28和30）以近邻的关系拉在一起，以将搭接接头接合在一个 在第二实施例（60）中基本连续的周向区域。 延伸部（62）可以将间隙桥接起来用作带的另一端的引导件，或者在第三实施例（70）中可以是带的整体部分（72和74）。
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公开(公告)号：US4969537A
公开(公告)日：1990-11-13
申请号：US269571
申请日：1988-11-10
申请人： Wayne M. Wagner , John A. Campbell , William L. Burchett , John S. Wiese , John R. Hiemstra , Timothy A. Bethke
发明人： Wayne M. Wagner , John A. Campbell , William L. Burchett , John S. Wiese , John R. Hiemstra , Timothy A. Bethke
CPC分类号： F01N13/18 , F01N1/02 , F01N1/08 , F01N2210/04 , F01N2470/02 , F01N2470/06 , F01N2470/24 , F01N2470/30 , F01N2490/155
摘要： A muffler assembly includes an inner outlet tube having a tubular portion, a frusto-conical portion and a flange portion having an expanded orifice facing the outlet of an inlet tube. Both the outlet tube and inlet tube extend within a chamber defined in an outer housing. The chamber is divided into two or more subchambers by a baffle which extends between the outlet tube and the housing. One or more holes in the baffle improve the sound attenuation characteristics of the muffler. The invention also comprehends a novel blank used in forming the outlet tube, and three alternative methods which may be used to form the outlet tube.
摘要翻译： 消声器组件包括具有管状部分，截头圆锥形部分和具有面向入口管的出口的扩张孔的凸缘部分的内部出口管。 出口管和入口管都在限定在外壳中的腔室内延伸。 通过在出口管和壳体之间延伸的挡板将室分成两个或更多个子室。 挡板中的一个或多个孔改善了消声器的声音衰减特性。 本发明还包括用于形成出口管的新型坯料以及可用于形成出口管的三种替代方法。
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公开(公告)号：US4676111A
公开(公告)日：1987-06-30
申请号：US818038
申请日：1986-01-13
申请人： Wayne M. Wagner , Timothy A. Bethke
发明人： Wayne M. Wagner , Timothy A. Bethke
IPC分类号： G01H3/00 , G01M17/007 , G01M15/00
CPC分类号： G01H3/00 , G01M17/007
摘要： The present invention is directed to providing an inexpensive, yet effective, simulation for measuring the sound level of the muffler contribution to the total sound created by a truck during a drive-by. The simulation method includes disconnecting a drive shaft of the drive mechanism of the truck and installing a dynamometer. When the throttle of the engine is increased, the dynamometer applies a load so that the acceleration rate of the drive mechanism compares similarly to the acceleration rates of a truck during an actual drive-by test in accordance with CFR 40, part 202. Sound barriers are placed around sounds sources other than the muffler of the truck. Microphones are used to sense the sound during the test for recording by strip-chart recorders.
摘要翻译： 本发明旨在提供一种便宜而有效的模拟，用于测量消音器对由卡车在驱动期间产生的总声音贡献的声级。 模拟方法包括断开卡车驱动机构的驱动轴并安装测功机。 当发动机的节气门增加时，测功机施加负载，使得驱动机构的加速率与根据CFR 40，第202部分的实际驾驶试验期间的卡车的加速率类似地相比。声障 围绕卡车消声器之外的声源放置。 麦克风用于在测试期间感测由条形图记录器进行记录的声音。
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