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公开(公告)号：US4178896A
公开(公告)日：1979-12-18
申请号：US961119
申请日：1978-11-16
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）。
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公开(公告)号：US4175523A
公开(公告)日：1979-11-27
申请号：US890901
申请日：1978-03-27
CPC分类号： F02M27/02 , F02M26/56 , F02M2026/009
摘要： An internal combustion engine is provided with an EGR system and a system for catalytic coversion of a rich air-fuel mixture into a reformed combustible gaseous mixture rich with free hydrogen. During a low or medium engine load engine operation, the engine is operated solely by an air-gasoline mixture and with an exhaust gas recirculation at a rate not higher than a predetermined first EGR rate. During a high engine load engine operation, the reformed combustible gaseous mixture is added to the air-gasoline mixture supply and simultaneously the exhaust gas recirculation is increased to a rate higher than the predetermined first EGR rate to increase the engine output, improve the engine drivability and improve the consumption of the reformed combustible gaseous mixture. The intake manifold vacuum is electrically detected to determine the load on the engine and to control valves associated with the EGR system and reformed gas supply system.
摘要翻译： 内燃机设置有EGR系统和用于将富空燃混合物催化转化成富含游离氢的重整可燃气体混合物的系统。 在低或中等发动机负载发动机运行期间，发动机仅由空气 - 汽油混合物和排气再循环以不高于预定的第一EGR率的速率运行。 在高发动机负载发动机运转期间，将重整的可燃气体混合物加入到空气 - 汽油混合物供应中，同时排气再循环增加到比预定的第一EGR率高的速率以增加发动机的输出，提高发动机的运转性能 并改善可燃气体混合物的消耗。 电气检测进气歧管真空以确定发动机上的负载并控制与EGR系统和重整气体供应系统相关联的阀。
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公开(公告)号：US4168684A
公开(公告)日：1979-09-25
申请号：US864082
申请日：1977-12-23
申请人： Syunichi Aoyama
发明人： Syunichi Aoyama
CPC分类号： F02M26/61 , F02M26/56 , F02M2026/0025
摘要： An EGR (Exhaust Gas Recirculation) control system comprises EGR control valve means including a first fluid chamber the vacuum in which increases and decreases in accordance with operating conditions of the engine whereby EGR control valve means control the recirculated amount of exhaust gases back to the engine and a second fluid chamber receiving therein a suction vacuum to thereby cause multiplication of the vacuum in the first chamber without altering the correspondency between the operating condition of the engine and the degree of opening of the EGR control valve means whereby the variable range of the vacuum in the first fluid chamber is optimally enlarged.An EGR control system further comprises relief valve means for reducing the EGR ratio below a predetermined constant level upon high speed low load operating condition of the engine and which includes a fluid chamber directly communicating with the first fluid chamber of the EGR control valve means whereby the relief valve means is operated by the vacuum substantially equal to the vacuum in the first fluid chamber of the EGR control valve means.
摘要翻译： EGR（排气再循环）控制系统包括EGR控制阀装置，其包括第一流体室，其中根据发动机的操作条件增加和减少的真空，由此EGR控制阀装置控制回流到发动机的废气的再循环量 以及第二流体室，其中容纳有吸入真空，从而使第一室中的真空倍增，而不改变发动机的运行状态与EGR控制阀装置的打开程度之间的对应关系，由此真空的可变范围 在第一流体室中被最佳地扩大。
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公开(公告)号：US4150646A
公开(公告)日：1979-04-24
申请号：US834422
申请日：1977-09-19
CPC分类号： F02M26/60 , F02M26/56 , F02M2026/0025 , F02M2026/009
摘要： An engine equipped with an electronically controlled fuel injection system is provided with an EGR control system which accurately regulates the EGR rate in accordance with a vacuum signal produced at a venturi formed in the intake passageway of the engine, under low and medium load engine operating conditions. However, under high speed and high load engine operating conditions, a part of intake air is bypassed through a bypass passage connecting the upstream and downstream sides of the venturi in order to prevent increase of the flow resistance of the intake air.
摘要翻译： 配备有电子控制燃料喷射系统的发动机设置有EGR控制系统，该EGR控制系统根据在发动机的进气通道中形成的文丘里管处产生的真空信号，在低和中等载荷的发动机运行条件下精确地调节EGR率 。 然而，在高速和高负载的发动机运行条件下，一部分进气通过连接文氏管的上游侧和下游侧的旁路通路旁通，以防止进气的流动阻力增加。
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公开(公告)号：US4142496A
公开(公告)日：1979-03-06
申请号：US784446
申请日：1977-04-04
申请人： Masaaki Saito , Akihiro Ohnishi
发明人： Masaaki Saito , Akihiro Ohnishi
CPC分类号： F02M26/56 , F02M2026/004 , Y10T137/86919
摘要： Two thermally operated control valves which, in cooperation with each other, admit into the vacuum chamber of the diaphragm unit for the EGR control valve atmospheric air only during cold engine operation, both atmospheric air and engine suction vacuum during engine warming-up operation, and engine suction vacuum only during engine normal operation.
摘要翻译： 两个热操作的控制阀，它们彼此配合，仅在冷发动机运行期间进入用于EGR控制阀大气的隔膜单元的真空室中，在发动机预热操作期间，大气和发动机抽吸真空，以及 发动机吸入真空只在发动机正常运行时。
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公开(公告)号：US4114575A
公开(公告)日：1978-09-19
申请号：US627351
申请日：1975-10-30
申请人： Hidetaka Nohira , Masaaki Tanaka
发明人： Hidetaka Nohira , Masaaki Tanaka
CPC分类号： F02M26/615 , F02M26/56 , F02M2026/0025
摘要： An exhaust pressure regulating system for use with an exhaust gas recirculating system of an internal combustion engine, and particularly for an automobile, utilizing a control valve of the butterfly or poppet type in the exhaust pipe for adjusting the back pressure in the exhaust, a vacuum-sensitive device for actuating the control valve, a pressure-signal passage for applying the pressure in the intake manifold to the vacuum-sensitive device and a pressure-comparing valve sensitive to the quantity of air being taken into the engine and the adjusted back pressure in the exhaust for modulating the pressure in the pressure-signal passage. The pressure-comparing valve includes a pair of interlocked diaphragms actuated in opposed relationship interacting with a biased valve member in the pressure-signal passage, one of the interlocked diaphragms being actuated by the venturi vacuum pressure created by the quantity of air being taken into the engine through the carburetor and the other of the diaphragms being actuated by the adjusted back pressure and tending to open the valve and bleed-off pressure in the pressure-signal passage. A booster valve is preferably used to amplify the venturi vacuum pressure and a pressure-changeover valve, sensitive to operating conditions of the engine, may be disposed in the pressure-signal passage.
摘要翻译： 一种用于内燃机的排气再循环系统，特别是用于汽车的排气压力调节系统，其利用排气管中的蝶阀或提升阀的控制阀来调节排气中的背压，真空 用于致动控制阀的敏感装置，用于将进气歧管中的压力施加到真空敏感装置的压力信号通道和对进入发动机的空气量敏感的压力比较阀和调节后的反压 在用于调制压力信号通道中的压力的排气中。 压力比较阀包括一对互锁的隔膜，其以相对的关系致动，与压力信号通道中的偏压阀构件相互作用，互锁隔膜中的一个由通过进入该空气的空气量产生的文丘里管真空压力致动 发动机通过化油器并且另一个隔膜由调节的背压致动并且倾向于打开阀门并在压力信号通道中泄放压力。 增压阀优选地用于放大文丘里管真空压力，并且对发动机的操作条件敏感的压力转换阀可以设置在压力信号通道中。
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公开(公告)号：US4106452A
公开(公告)日：1978-08-15
申请号：US797607
申请日：1977-05-16
申请人： Kohichi Mizutani
发明人： Kohichi Mizutani
CPC分类号： F02M26/56
摘要： An exhaust gas recirculator in an internal combustion engine wherein a part of the exhaust gas is supplied to a suction manifold only at the time when the throttle valve is opened and in some time interval immediately after the time afterwards, and the supply of the exhaust gas is stopped in time interval in the steady operation of the engine at the degree of opening of the throttle valve in the above supply period.
摘要翻译： 一种内燃机中的废气再循环器，其特征在于，仅在节流阀打开时和后一段时间内将排气的一部分供给到吸入歧管，并且排气的供给 在上述供给期间以节气门的打开程度在发动机的稳定运转中以时间间隔停止。
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58.发明授权Internal combustion engine and method of reducing toxic compounds in the exhaust gases therefrom 失效内燃机及其排放气体中有毒化合物的还原方法
公开(公告)号：US4094286A
公开(公告)日：1978-06-13
申请号：US717408
申请日：1976-08-24
CPC分类号： F02B23/08 , F02M26/15 , F02M26/39 , F02M26/42 , F02M26/56 , F02B1/04 , F02M26/21 , Y02T10/125
摘要： A multiple-cylinder spark-ignition internal combustion engine for an automotive vehicle, in which the ratio of the inactive compounds in the mixture gases produced in each combustion chamber to the fuel component in the combustible mixture inducted into the chamber is maintained within a predetermined range and the spark plug for each engine cylinder is arranged so that the flame travel from the spark plug is reduced to a minimum for promoting the combustion reaction to proceed in the least possible time. Improvements are further made in respect of the exhaust gas recirculation rate, the location and measurements of the spark plug, the configurations and measurements of the engine cylinder and the arrangement of the intake and exhaust ports so as to reduce the concentrations of toxic compounds in the exhaust gases without impairing the performance efficiency of the engine.
摘要翻译： 一种用于机动车辆的多缸火花点火内燃机，其中在每个燃烧室中产生的混合气体中的无活性化合物与引入室中的可燃混合物中的燃料组分的比率保持在预定范围内 并且每个发动机气缸的火花塞被布置成使得来自火花塞的火焰传播减少到最小，以促进燃烧反应在最短的时间内进行。 进一步对废气再循环率，火花塞的位置和测量值，发动机气缸的结构和尺寸以及进气和排气口的布置进行改进，以便降低有毒化合物的浓度 排气而不损害发动机的性能效率。
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公开(公告)号：US4094284A
公开(公告)日：1978-06-13
申请号：US624494
申请日：1975-10-21
申请人： William Fred Gesell
发明人： William Fred Gesell
CPC分类号： F15C1/14 , F02M26/14 , F02M26/39 , F02M26/56 , F02M26/58 , F02M26/61 , F15C1/10 , F02M2026/0025 , Y10T137/2273
摘要： Exhaust gas is recirculated to an intake manifold of an engine by a shut-off valve and a fluidic amplifier for modulation in accordance with different engine parameters. The shut-off valve is normally biased to a closed position and it is opened to permit recirculation in response to a signal received from a fluidic NOR gate which operates in accordance with position of a carburetor throttle, engine speed and engine temperature. The fluidic amplifier includes a power jet chamber receiving a supply of exhaust and a vent chamber in fluid communication with a venturi disposed in the exhaust manifold, a receiver chamber and a pair of control jets. One of the control jets may be in fluid communication with the intake manifold or with a carburetor venturi. The other control jet may be open to atmospheric pressure compensated for the effect of changes in air density or engine speed.
摘要翻译： 废气通过截止阀和流体放大器再循环到发动机的进气歧管，用于根据不同的发动机参数进行调节。 截止阀通常被偏置到关闭位置，并且其被打开以允许响应于从根据化油器节流阀的位置，发动机转速和发动机温度操作的流体NOR门接收到的信号来再循环。 流体放大器包括接收排气供应的动力喷射室和与布置在排气歧管中的文氏管流体连通的通气室，接收器室和一对控制喷嘴。 控制射流中的一个可以与进气歧管或化油器文氏管流体连通。 另一个控制喷气机可以打开到大气压，补偿空气密度或发动机转速变化的影响。
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公开(公告)号：US4041917A
公开(公告)日：1977-08-16
申请号：US699038
申请日：1976-06-21
申请人： Yukio Suzuki
发明人： Yukio Suzuki
CPC分类号： F02M26/56
摘要： This application discloses an EGR system in which the vacuum control valve is improved to comprise:A first diaphragm;A second diaphragm;A first chamber which is formed outside said first diaphragm and communicating with the atmosphere;A second chamber which is formed between said first and second diaphragm and communicating with the pressure control chamber of the EGR valve, and;A third chamber which is formed outside said second diaphragm and communicating with the intake pipe of the engine at the downstream of the throttle valve of the carburetor.
摘要翻译： 本申请公开了一种EGR系统，其中真空控制阀被改进为包括：
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