公开(公告)号：US4376369A

公开(公告)日：1983-03-15

申请号：US198663

申请日：1980-10-20

申请人： Masafumi Horikoshi ,  Michikatsu Sato ,  Takanori Onishi

发明人： Masafumi Horikoshi ,  Michikatsu Sato ,  Takanori Onishi

IPC分类号： F01N3/22 ,  F02D35/00 ,  F02D37/00 ,  F02D41/14 ,  F02D43/00 ,  F02M7/24 ,  F02B75/10

CPC分类号： F01N3/222 ,  F01N3/22 ,  F01N3/227 ,  F02D35/00 ,  F02D37/00 ,  F02D41/1488 ,  F02D41/1489 ,  F02M7/24

摘要： An internal combustion engine has an exhaust manifold, an inlet manifold, and a carburetor which has a fuel jet. An oxygen sensor is mounted within the exhaust manifold, and produces an output signal according to the oxygen present within the exhaust gases. A computing means computes a corrective signal according to the oxygen sensor output signal. This corrective signal is fed as an input signal both to a means for supplying secondary air into the exhaust manifold, and also to a means for supplying bleed air to the jet of the carburetor. In a particular embodiment, a secondary air signal cutoff device selectively intercepts supply of the corrective signal to the secondary air supply means, and an air bleed signal cutoff device selectively intercepts the supply of the corrective signal to the air bleed supply means. These cutoff devices may be controlled according to vehicle road speed, engine temperature, engine rotational speed, inlet manifold vacuum, and the temperature of a catalytic converter. The corrective signal may be a duty ratio coded pulse signal.

摘要翻译： 内燃机具有排气歧管，入口歧管和具有燃料射流的化油器。 氧气传感器安装在排气歧管内，并根据废气中存在的氧气产生输出信号。 计算装置根据氧传感器输出信号计算校正信号。 该校正信号作为输入信号被馈送到用于将二次空气供应到排气歧管中的装置，以及用于向化油器的喷射流体供给放气的装置。 在特定实施例中，二次空气信号切断装置选择性地拦截对二次空气供应装置的校正信号的供应，并且排气信号切断装置选择性地拦截向排气供应装置提供校正信号。 这些切断装置可以根据车辆道路速度，发动机温度，发动机转速，进气歧管真空度和催化转化器的温度来控制。 校正信号可以是占空比编码脉冲信号。

公开(公告)号：US4178896A

公开(公告)日：1979-12-18

申请号：US961119

申请日：1978-11-16

申请人： Masafumi Horikoshi ,  Hidetaka Nohira ,  Masaaki Tanaka

发明人： Masafumi Horikoshi ,  Hidetaka Nohira ,  Masaaki Tanaka

IPC分类号： F02M25/07 ,  F02M25/06

CPC分类号： F02M26/56

摘要： Controlled exhaust gas recycling can be accomplished by a pneumatically actuated valve which restricts the flow of exhaust gas from an exhaust manifold of an internal combustion engine to the intake manifold. Exhaust gas may be removed from the manifold and enters a pressure chamber through a reduction means, such as an aperture in a plate. The effective cross-sectional area of hydrodynamic flow of the reduction means is chosen to be greater than the effective cross-sectional area of hydrodynamic flow of the valve. The valve is actuated by a diaphragm control means which is coupled to the intake and exhaust manifold. The diaphragm control means controls the amount of partial pressure applied to the pneumatically actuated valve according to the exhaust pressure from the exhaust manifold. Thus, the ratio of exhaust gas recycled through the internal combustion engine relative to the amount of engine air intake, decreases as the air intake volume increases, such as when the engine is under high loads or operating at high rates (RPM).

摘要翻译： 受控的废气再循环可以通过气动致动的阀来实现，其将排气从内燃机的排气歧管的流量限制到进气歧管。 废气可以从歧管移除并通过诸如板中的孔的还原装置进入压力室。 选择还原装置的流体动力流动的有效横截面面积大于阀的流体动力流动的有效横截面面积。 该阀由隔膜控制装置致动，隔膜控制装置联接到进气歧管和排气歧管。 隔膜控制装置根据来自排气歧管的排气压力来控制施加到气动致动阀的分压量。 因此，通过内燃机再循环的废气相对于发动机进气量的比例随着进气量的增加而减小，例如当发动机处于高负荷或高速运转（RPM）时）。