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1. 发明申请

US20080245604A1 PASSIVE SECONDARY AIR MUFFLER 有权
标题翻译：被动二次空气压缩机
公开(公告)号：US20080245604A1
公开(公告)日：2008-10-09
申请号：US12044088
申请日：2008-03-07
申请人： Troy M. Saunders , Ronald J. Donahue
发明人： Troy M. Saunders , Ronald J. Donahue
IPC分类号： F01N7/08
CPC分类号： F01N3/34 , F01N1/083 , F01N1/085 , F01N1/089 , F01N1/14 , F01N3/2885 , F01N13/002 , F01N13/082 , F01N13/1872 , F01N2230/04 , F01N2450/20 , F01N2470/30 , Y02T10/20
摘要： A passive secondary air muffler for a small internal combustion engine. The secondary air muffler may include a venturi device and a catalytic converter. The venturi device may be in the form of a stamped sheet metal insert which, along with the outer muffler housing or shell, forms a secondary or auxiliary air intake device. The venturi device may also be formed from baffles separating an inlet chamber from an outlet chamber of the muffler. The secondary air intake device provides auxiliary or secondary air to the exhaust gas stream exiting the engine upstream of the catalytic converter to improve the efficiency of the catalytic converter. In an exemplary embodiment, the venturi device has a hemispherical cross-sectional shape or a circular cross-sectional shape taken along a plane substantially perpendicular to the direction of flow of the exhaust gas stream.
摘要翻译：用于小型内燃机的无源二次空气消声器。二次空气消声器可以包括文氏管装置和催化转化器。文氏管装置可以是冲压的金属板插件的形式，其与外消声器壳体或外壳一起形成二次或辅助进气装置。文丘里装置也可以由将入口室与消音器的出口室分开的挡板形成。二次进气装置为催化转化器上游离开发动机的排气流提供辅助或二次空气以提高催化转化器的效率。在示例性实施例中，文丘里装置具有半球截面形状或圆形横截面形状，其沿着基本上垂直于废气流的流动方向的平面截取。

2. 发明授权

US07854296B2 Passive secondary air muffler 有权
标题翻译：被动二次空气消音器
公开(公告)号：US07854296B2
公开(公告)日：2010-12-21
申请号：US12044088
申请日：2008-03-07
申请人： Troy M. Saunders , Ronald J. Donahue
发明人： Troy M. Saunders , Ronald J. Donahue
IPC分类号： F01N13/10
CPC分类号： F01N3/34 , F01N1/083 , F01N1/085 , F01N1/089 , F01N1/14 , F01N3/2885 , F01N13/002 , F01N13/082 , F01N13/1872 , F01N2230/04 , F01N2450/20 , F01N2470/30 , Y02T10/20
摘要： A passive secondary air muffler for a small internal combustion engine. The secondary air muffler may include a venturi device and a catalytic converter. The venturi device may be in the form of a stamped sheet metal insert which, along with the outer muffler housing or shell, forms a secondary or auxiliary air intake device. The venturi device may also be formed from baffles separating an inlet chamber from an outlet chamber of the muffler. The secondary air intake device provides auxiliary or secondary air to the exhaust gas stream exiting the engine upstream of the catalytic converter to improve the efficiency of the catalytic converter. In an exemplary embodiment, the venturi device has a hemispherical cross-sectional shape or a circular cross-sectional shape taken along a plane substantially perpendicular to the direction of flow of the exhaust gas stream.
摘要翻译：用于小型内燃机的无源二次空气消声器。二次空气消声器可以包括文氏管装置和催化转化器。文氏管装置可以是冲压的金属板插件的形式，其与外消声器壳体或外壳一起形成二次或辅助进气装置。文丘里装置也可以由将入口室与消音器的出口室分开的挡板形成。二次进气装置为催化转化器上游离开发动机的排气流提供辅助或二次空气以提高催化转化器的效率。在示例性实施例中，文丘里装置具有半球形横截面形状或沿着基本上垂直于废气流的流动方向的平面截取的圆形横截面形状。

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