公开(公告)号：US5431013A

公开(公告)日：1995-07-11

申请号：US170751

申请日：1993-12-21

申请人： Yasuhito Yamaki ,  Hiroaki Kaneko ,  Katsumi Nakazato ,  Yoshimitsu Tateno

发明人： Yasuhito Yamaki ,  Hiroaki Kaneko ,  Katsumi Nakazato ,  Yoshimitsu Tateno

IPC分类号： F01N1/24 ,  F01N3/033 ,  F01N3/30 ,  F01N3/34 ,  F01N3/20

CPC分类号： F01N3/306 ,  F01N3/0335 ,  F01N3/34 ,  F01N1/24 ,  F01N2270/02 ,  Y02T10/20

摘要： An engine exhaust apparatus comprises a sound suppressing section for lowering the exhaust noise level as an exhaust gas discharged from the exhaust port passes through it. The exhaust apparatus is provided with an ejector section for introducing secondary air into the exhaust gas delivered from the sound suppressing section and mixing the gases, and a post-treatment section for purifying the gas mixture delivered from the ejector section. The exhaust gas discharged from an exhaust manifold gets into the ejector section through the sound suppressing section, and is then purified in the post-treatment section. Therefore, the ejector effect cannot be reduced by the sound suppressing section which is subject to high flow resistance. Thus, the exhaust noise level can be lowered with the ejector effect of the introduction of the secondary air improved considerably, and low cost and simple construction can be enjoyed.

摘要翻译： 发动机排气装置包括声音抑制部分，用于当从排气口排出的废气通过时，降低排气噪声水平。 排气装置设置有用于将二次空气引入到从声音抑制部输送的排气中并混合气体的喷射部，以及用于净化从喷射部输送的气体混合物的后处理部。 从排气歧管排出的废气通过声音抑制部进入喷射器部，然后在后处理部中进行净化。 因此，由于流动阻力高的声音抑制部不能降低喷射效果。 因此，能够显着提高二次空气的喷出效果，能够降低排气噪声水平，能够实现低成本，简单的结构。