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公开(公告)号：US4328668A
公开(公告)日：1982-05-11
申请号：US185724
申请日：1980-09-11
申请人： Motohisa Miura
发明人： Motohisa Miura
IPC分类号： F01N3/22
摘要： A control valve is mounted on an air relief line branched off from a secondary air supply line extending from an air pump to an exhaust pipe for controlling the pressure of air in the secondary air supply line. The control valve so controls the pressure of the air in the air supply line as to increase it when acceleration of an engine starts or to decrease it when deceleration of the engine starts, whereby the amount of the secondary air supplied to the exhaust pipe is controlled in response to the acceleration and deceleration of the engine.
摘要翻译： 控制阀安装在从从空气泵延伸到排气管的二次空气供给管线分支出的空气泄放管线上，以控制二次空气供应管线中的空气压力。 控制阀因此控制供气管路中的空气的压力，以便在发动机的加速时启动时增加空气的压力，或者当发动机的减速开始时减小，从而控制向排气管供给的二次空气的量 响应发动机的加速和减速。
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公开(公告)号：US3990418A
公开(公告)日：1976-11-09
申请号：US453534
申请日：1974-03-21
CPC分类号： F02M26/58 , F02M2026/004
摘要： An exhaust gas control valve adapted for controlling exhaust gas flow returning to the upstream side of a carburetor from an exhaust line of a vehicle engine. The control valve comprises a means for reducing or stopping the returning exhaust gas when ambient temperature is very low, whereby so called carburetor icing is avoided.
摘要翻译： 一种排气控制阀，适于控制从汽车发动机的排气管路返回到化油器的上游侧的废气流。 控制阀包括当环境温度非常低时减少或停止返回废气的装置，从而避免所谓的化油器结冰。
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公开(公告)号：US4263783A
公开(公告)日：1981-04-28
申请号：US919833
申请日：1978-06-28
申请人： Motohisa Miura , Shojiro Nagano , Naohiro Naganuma , Mikiji Ito
发明人： Motohisa Miura , Shojiro Nagano , Naohiro Naganuma , Mikiji Ito
CPC分类号： F01N3/22 , F01N3/227 , F01N3/32 , F02M26/55 , F02M26/61 , F02M2026/002 , F02M2026/005 , Y02T10/20
摘要： An engine exhaust gas purification system includes an EGR line for the recirculation of exhaust gases from an engine exhaust system back into an intake system thereof. An EGR valve is provided in the EGR line to control the rate of EGR. The EGR valve is actuated by an actuator which is operated by pressurized air supplied by a diaphragm pump driven by the engine in proportion to the engine speed. The pressure of the pressurized air is substantially proportional to the engine speed, whereby the EGR rate is controlled so as to be substantially proportional to the engine speed.
摘要翻译： 发动机废气净化系统包括用于将来自发动机排气系统的废气再循环回到其进气系统中的EGR管线。 EGR阀设置在EGR管线中以控制EGR率。 EGR阀由致动器致动，致动器由与发动机转速成比例的由发动机驱动的隔膜泵供应的加压空气操作。 加压空气的压力基本上与发动机转速成比例，由此EGR速率被控制成与发动机转速成正比。
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公开(公告)号：US4245472A
公开(公告)日：1981-01-20
申请号：US041932
申请日：1979-05-23
申请人： Motohisa Miura
发明人： Motohisa Miura
摘要： A secondary air supply control apparatus for an internal combustion engine comprises an air pump for producing the secondary air flow, a secondary air supply passage leading to an exhaust system of the engine, a bypass passage leading to the atmosphere, and a valve element connected to a diaphragm. The diaphragm constitutes one wall of a pressure chamber which is supplied with a negative intake pressure prevailing in an intake system of the engine, so as to move the valve element to a position at which the secondary air flow is directed to the secondary air supply passage when the negative intake pressure is higher than a predetermined level. There is provided a control unit operable in response to the pressure of the secondary air flow supplied to the exhaust system to apply the atmospheric pressure to the pressure chamber, thereby moving the valve element to another position at which the secondary air flow is directed to the bypass passage when the pressure of the secondary air flow supplied to the exhaust system is increased beyond a level which imposes overload on the air pump.
摘要翻译： 用于内燃机的二次空气供应控制装置包括用于产生二次空气流的气泵，通向发动机的排气系统的二次空气供给通道，通向大气的旁通通路，以及连接到 隔膜。 隔膜构成压力室的一个壁，该压力室被供给在发动机的进气系统中的负吸入压力，以便将阀元件移动到二次空气流被引导到二次空气供给通道的位置 当负吸入压力高于预定水平时。 提供了一个控制单元，其响应于供应到排气系统的二次空气流的压力而被操作，以将大气压力施加到压力室，从而将阀元件移动到另一个位置，在该位置二次空气流被引导到 当提供给排气系统的二次空气流的压力增加到超过在空气泵上施加过载的水平时，旁路通道。
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公开(公告)号：US4189915A
公开(公告)日：1980-02-26
申请号：US900308
申请日：1978-04-26
申请人： Motohisa Miura
发明人： Motohisa Miura
摘要： An air switching valve for controlling supply of secondary air to an exhaust system of an engine closes an air release port thereof to increase an amount of secondary air to be supplied at least at an initial stage of an engine acceleration operation. The air switching valve closes a secondary air supply line to stop the supply of the secondary when the engine acceleration operation continues for more than a predetermined time period, thus to prevent an exhaust gas purifier disposed in the exhaust system from over-heat.
摘要翻译： 用于控制向发动机的排气系统供给二次空气的空气切换阀将至少在发动机加速运转的初始阶段关闭其空气释放口，以增加要供给的二次空气的量。 当发动机加速操作持续超过预定时间段时，空气切换阀关闭二次空气供应管线以停止二次供应，从而防止排放系统中排放的废气净化器过热。
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公开(公告)号：US4044739A
公开(公告)日：1977-08-30
申请号：US602313
申请日：1975-08-06
IPC分类号： F16K31/126 , F02M25/07 , F02M25/00
CPC分类号： F02M26/58 , Y10S137/907
摘要： An exhaust gas control valve comprising a diaphragm interposed between an outer upper casing and an outer lower casing of the diaphragm housing, the diaphragm and the upper outer casing defining a first pressure chamber, an inner upper casing attached to the upper surface of the diaphragm within the first pressure chamber, an inner lower casing attached to the undersurface of the diaphragm within the outer lower casing, the inner lower casing and the diaphragm defining a second pressure chamber, a valve housing attached to the bottom of the diaphragm housing and provided with an exhaust gas intake port, an exhaust gas discharge port and a valve seat member disposed in a passage between the exhaust gas intake and discharge ports, a valve head with a stem whose upper end is attached to the center of the diaphragm so that the valve head may be moved toward and away from the valve seat member depending upon the deflection of the diaphragm, the space or chamber defined by the diaphragm and the inner upper casing and the space or chamber defined by the diaphragm and the outer lower casing being communicated with the surrounding atmosphere, and the different negative pressures being transmitted to the first and second pressure chambers, respectively, whereby the quantity of exhaust gases to be recirculated may be controlled depending upon the operating conditions of the engine to minimize the nitrogen oxide (NOx) emission.
摘要翻译： 一种排气控制阀，包括插入在隔膜壳体的外上壳体和外下壳体之间的隔膜，隔膜和上外壳限定第一压力室，内上壳体，其附接到膜片的上表面 所述第一压力室，在所述外部下部壳体内附接到所述隔膜的下表面的内部下部壳体，所述内部下部壳体和所述隔膜限定第二压力室，附接到所述隔膜壳体的底部并设置有 排气进气口，废气排放口和设置在废气进入和排出口之间的通道中的阀座构件，具有杆的阀头，其上端附接到隔膜的中心，使得阀头 可以根据隔膜的偏转，由隔膜限定的空间或室来移动和离开阀座构件 内部上部壳体和由隔膜和外部下部壳体限定的空间或室与周围大气连通，并且不同的负压分别被传递到第一和第二压力室，由此废气的量 可以根据发动机的操作条件来控制再循环以最小化氮氧化物（NOx）排放。
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公开(公告)号：US4175387A
公开(公告)日：1979-11-27
申请号：US871933
申请日：1978-01-24
申请人： Motohisa Miura
发明人： Motohisa Miura
摘要： A system for controlling secondary air supply from an engine-driven air pump through a supply line into the engine exhaust manifold has a control valve with air inlet and outlet ports and a slidable, spring-biased valve seat member defining main and auxiliary air release openings. A first valve member is movable by a valve actuator to control the communication between the air inlet and outlet ports and the main air release opening. A second valve member is resiliently urged by a second spring against the valve seat member to control the communication between the auxiliary air release apertures in the valve seat member and the air release port. The valve actuator has first and second air pressure chambers connected to the secondary air supply line upstream of the secondary air control valve. The first control chamber is connected to the engine intake system. Control valves are provided to control the supply of air pressure into the first and second chambers such that, at least at the initial stage of an engine acceleration, the air release pressure at which the second valve member is moved away from the valve seat member to permit release of the secondary air is increased with resultant increase in the secondary air supply to the engine exhaust system. Pressure delay valves are provided for the control valves whereby the secondary air supply is interrupted when acceleration has lasted for more than a predetermined time.
摘要翻译： 用于控制从发动机驱动的空气泵通过供应管线进入发动机排气歧管的二次空气供应的系统具有带有空气入口和出口的控制阀以及限定主要和辅助空气释放开口的可滑动的弹簧偏压阀座构件 。 第一阀构件可通过阀致动器移动，以控制空气入口和出口与主空气释放口之间的连通。 第二阀构件被第二弹簧弹性地推靠在阀座构件上，以控制阀座构件中的辅助空气释放孔与空气释放口之间的连通。 阀致动器具有连接到二次空气控制阀上游的二次空气供应管线的第一和第二空气压力室。 第一控制室连接到发动机进气系统。 提供控制阀以控制进入第一和第二室的空气压力的供应，使得至少在发动机加速的初始阶段，第二阀构件从阀座构件移开的释放压力到 允许二次空气的释放增加，从而导致对发动机排气系统的二次空气供应的增加。 为控制阀提供压力延迟阀，由此当加速持续超过预定时间时二次空气供应中断。
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公开(公告)号：US4147033A
公开(公告)日：1979-04-03
申请号：US858625
申请日：1977-12-06
申请人： Motohisa Miura , Mikiji Ito
发明人： Motohisa Miura , Mikiji Ito
摘要： A relief pressure control valve for controlling the pressure in a secondary air supply line has first and second pressure chambers divided by a diaphragm, a spring for biasing the diaphragm towards the second pressure chamber, a relief port connected to the secondary air supply line, a valve head connected to the diaphragm and being biased to close the relief port.The air pumped out from an air pump is supplied to the first pressure chamber and the first pressure chamber is communicated with the second pressure chamber through an orifice. Accordingly, during stable running operations of the engine, the pressures in the first and second pressure chambers are made equal by means of the orifice, while during the accelerations pressure difference is produced between the chambers for a certain time period. The pressure difference urges the diaphragm in the same direction as that of the urging force of the spring, whereby the pressure in the secondary air supply line controlled by the relief pressure control valve is increased during the accelerations so as to supply the increased amount of the secondary air to the exhaust pipe of the engine.
摘要翻译： 用于控制二次空气供应管线中的压力的安全压力控制阀具有由隔膜分隔开的第一和第二压力室，用于将隔膜朝向第二压力室偏压的弹簧，连接到二次空气供应管线的排放口， 阀头连接到隔膜并被偏压以关闭泄放口。
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