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    • 3. 发明授权
    • Exhaust gas recirculation system
    • 废气再循环系统
    • US4233946A
    • 1980-11-18
    • US28765
    • 1979-04-09
    • Keigo YoriokaMikio Minoura
    • Keigo YoriokaMikio Minoura
    • F02D9/02F02M25/07F02M25/06
    • F02M26/63F02M26/39F02M26/55F02D2009/0276
    • An exhaust gas recirculation system for cleaning exhaust gas from an internal combustion engine is provided in which a variable constriction is provided between an intake pipe and a pressure control valve in operative connection to a throttle valve in the carburetor and the pressure differential across said variable constriction is maintained constant to keep off any influence of the exhaust gas pressure while the ratio of the exhaust gas flow rate to the air intake into the engine is varied in correspondence to the intake pipe negative pressure. This exhaust gas recirculation system can be adapted to a fuel injection type intake system as well as other intake systems provided with an air valve for regulating air intake or having no venturi constriction such as employed in an SU type carburetor.
    • 提供了一种用于净化内燃机废气的排气再循环系统,其中在进气管和压力控制阀之间设有可变的收缩管,其与化油器中的节流阀有效连接,并且所述可变收缩管 保持恒定以防止排气压力的影响,同时排气流量与进入发动机的进气口的比率对应于进气管负压而变化。 这种废气再循环系统可以适用于燃料喷射式进气系统以及设置有用于调节进气口的空气阀或者没有诸如在SU型化油器中使用的文氏管压缩的其它进气系统。
    • 4. 发明授权
    • Exhaust gas recirculation system for an internal combustion engine
    • 内燃机排气再循环系统
    • US4203400A
    • 1980-05-20
    • US967153
    • 1978-12-06
    • Keigo Yorioka
    • Keigo Yorioka
    • F02M25/07F02M25/06
    • F02M26/56
    • An exhaust gas recirculation system for an internal combustion engine wherein a fixed restriction, a pressure chamber and a pressure control valve are arranged in the order named in an exhaust gas recirculation passage and the pressure control valve is controlled in such a way that the pressure in the pressure chamber may be maintained equal to the combined pressure which is obtained by the comparison between two amplified pressure signals A and B both of which represent the quantity such as the negative pressure in an intake pipe which in turn represents the variations in load on the engine. With these two pressure signals A and B, the pressure in the pressure chamber may be varied from the exhaust gas pressure to the pressure a few times the negative pressure created in a venturi in the intake pipe, whereby in response to the variations in load on the engine, which may be represented by the variations in the negative pressure in the intake pipe, the ratio of the flow rate of the exhaust gases to be recirculated to the quantity of the intake air may be varied more widely than in the exhaust gas recirculation system.
    • 一种用于内燃机的废气再循环系统,其中固定式限制装置,压力室和压力控制阀按排气再循环通道中的顺序排列,并且压力控制阀以这样的方式被控制: 压力室可以保持等于通过两个放大压力信号A和B之间的比较获得的组合压力,两个压力信号表示诸如进气管中的负压的量,这又反映了在 发动机。 利用这两个压力信号A和B,压力室中的压力可以从排气压力变化到在进气管中的文氏管中产生的负压的几倍,由此响应于负载的变化 可以由进气管中的负压的变化来表示的发动机,要再循环的废气的流量与进气量的比率可以比在废气再循环中更广泛地变化 系统。