公开(公告)号：US4030465A

公开(公告)日：1977-06-21

申请号：US718196

申请日：1976-08-26

申请人： Tatsuro Nakagami ,  Yuhiko Kiyota

发明人： Tatsuro Nakagami ,  Yuhiko Kiyota

IPC分类号： F02M11/00 ,  F02B1/04 ,  F02B1/06 ,  F02M7/08 ,  F02M13/04 ,  F02M13/06

CPC分类号： F02M7/08 ,  F02B1/06 ,  F02M13/046 ,  F02B1/04

摘要： An improved multi-cylinder internal combustion engine for producing cleaner exhaust gas. The engine has a novel fuel gas intake device in which a lean mixture gas having an air-to-fuel ratio of about 16-20 is fed almost uniformly to all the cylinders by means of a carburetor, and some of the cylinders are provided with a fuel addition passageway to supply an appropriate amount of additional fuel in accordance with various operation conditions of the engine in response to an opening angle and abrupt opening of a throttle valve of the carburetor so that a rich mixture gas having an air-to-fuel ratio of about 12-14 may be fed to such cylinders, whereby the amount of harmful gases, such as HC, CO and NO.sub.x in the exhaust, can be effectively reduced.

摘要翻译： 一种用于生产清洁废气的改进的多缸内燃机。 发动机具有新颖的燃料气体进气装置，其中空燃比为约16-20的稀混合气体通过化油器几乎均匀地供给所有气缸，并且一些气缸设置有 燃料添加通道，其响应于化油器的节流阀的打开角度和突然打开而根据发动机的各种操作条件提供适量的附加燃料，使得具有空气燃料的富混合气体 约12-14的比例可以被供给到这种气缸，由此可以有效地减少排气中的有害气体，例如HC，CO和NO x的量。