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公开(公告)号：US4020813A
公开(公告)日：1977-05-03
申请号：US476271
申请日：1974-06-04
CPC分类号： F02D41/1482 , F02D35/003 , F02D43/00 , F02M23/04 , Y02T10/146
摘要： An air-to-fuel ratio control means provided in a carbureter of an automobile, in which control means a control valve for controlling the rate of flow of compensating air or compensating fuel is provided. Also, a drive means is provided to fix the control valve at positions at which an optimum air-to-fuel ratio is obtained depending upon the engine operating conditions, namely at the time of cold starting, under low-load low-speed and high-load high-speed engine operating conditions.
摘要翻译： 设置在汽车的化油器中的空燃比控制装置，其中控制装置提供用于控制补偿空气或补偿燃料的流量的控制阀。 而且，提供一种驱动装置，用于将控制阀固定在根据发动机工作条件即冷启动时在低负载低速和高速下获得最佳空燃比的位置 高速发动机运行条件。
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公开(公告)号：US4128998A
公开(公告)日：1978-12-12
申请号：US764985
申请日：1977-02-02
CPC分类号： F01N9/00 , F01N3/2053 , F02D41/1446 , F01N2390/02 , F01N2410/02 , Y02T10/47
摘要： An overheat preventing system is provided for a vehicle exhaust gas purifier. The system comprises a temperature detector mounted in the locality of each of the exhaust ports of an engine, an overheat detector for detecting failure of an engine to fire from the temperature signals generated by the temperature detectors and for generating a signal, and an actuator for preventing the overheating of an exhaust gas purifier which is adapted to be operated upon the generation of the overheat signal from the overheat detector, whereby unburned gases are prevented from flowing into the exhaust gas purifier.
摘要翻译： 为车辆废气净化器提供过热防止系统。 该系统包括安装在发动机的每个排气口的位置的温度检测器，用于检测发动机从温度检测器产生的温度信号发生故障并产生信号的过热检测器，以及用于产生信号的致动器 防止排气净化器过热，该排气净化器适于在过热检测器产生过热信号时进行操作，从而防止未燃烧气体流入废气净化器。
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公开(公告)号：US4084560A
公开(公告)日：1978-04-18
申请号：US606587
申请日：1975-08-21
CPC分类号： F02D41/1484 , F02D41/1482 , F02M23/04 , Y02T10/146
摘要： A system for controlling an air-to-fuel ratio of a gas mixture supplied to a vehicle engine to a correct valve is disclosed. In response to an output signal from a discriminator circuit which receives as inputs thereto a signal from an air-to-fuel ratio detector mounted in an exhaust pipe and simultaneously in response to a signal from an aperture detector which detects the aperture of a control valve mounted in an adjusting air path provided parallel to a carburetor, a pulse motor for adjusting the aperture of the control valve provided in said air path is driven to obtain a correct air-to-fuel ratio.
摘要翻译： 公开了一种用于将提供给车辆发动机的气体混合物的空气燃料比控制到正确的阀的系统。 响应于来自鉴别器电路的输出信号，该鉴频器电路接收来自安装在排气管中的空气 - 燃料比检测器的信号作为输入，同时响应来自检测控制阀的孔径的孔径检测器的信号 安装在与化油器平行设置的调节空气路径中，驱动用于调节设置在所述空气路径中的控制阀的孔径的脉冲电机以获得正确的空气燃料比。
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公开(公告)号：US4012906A
公开(公告)日：1977-03-22
申请号：US371880
申请日：1973-06-20
CPC分类号： F02D41/1446 , F01N3/2053 , F01N9/00 , F01N2390/02 , F01N2410/02 , Y02T10/47
摘要： An overheat preventing system is provided for a vehicle exhaust gas purifier. The system comprises a temperature detector mounted in the locality of each of the exhaust ports of an engine, an overheat detector for detecting failure of an engine to fire from the temperature signals generated by the temperature detectors and for generating a signal, and an actuator for preventing the overheating of an exhaust gas purifier which is adapted to be operated upon the generation of the overheat signal from the overheat detector, whereby unburned gases are prevented from flowing into the exhaust gas purifier.
摘要翻译： 为车辆废气净化器提供过热防止系统。 该系统包括安装在发动机的每个排气口的位置的温度检测器，用于检测发动机从温度检测器产生的温度信号发生故障并产生信号的过热检测器，以及用于产生信号的致动器 防止排气净化器过热，该排气净化器适于在过热检测器产生过热信号时进行操作，从而防止未燃烧气体流入废气净化器。
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公开(公告)号：US4192268A
公开(公告)日：1980-03-11
申请号：US30953
申请日：1979-04-17
CPC分类号： F02D41/1481 , F02M23/04 , F02B1/04 , Y02T10/146
摘要： An air flow amount adjusting system produces an air-fuel mixture of a desirable air-fuel ratio by controlling the direction of movement of a bypass valve mounted in an additional air supply pipe adapted to supply additional air into either the intake system or exhaust system of an internal combustion engine in accordance with an output signal produced from a gas sensor mounted in the exhaust system of the engine and indicative of the air-fuel ratio of the mixture supplied to the engine. A two-level mode signal whose threshold corresponds to the desired air-fuel ratio is produced in accordance with the output signal of the gas detector. After the two-level mode signal has changed from one level to the other level, the movement of the bypass valve is stopped for a certain period of time. If desired, the stopping period of the bypass valve may be changed in accordance with the temperature of the engine.
摘要翻译： 空气流量调节系统通过控制安装在附加空气供应管中的旁通阀的运动方向来产生期望空燃比的空气 - 燃料混合物，该附加空气供应管适于将额外空气供应到进气系统或排气系统 根据从安装在发动机的排气系统中的气体传感器产生的输出信号的内燃机，其指示供应给发动机的混合物的空燃比。 根据气体检测器的输出信号产生阈值对应于所需空燃比的两电平模式信号。 在双电平模式信号从一个电平变化到另一个电平之后，旁路阀的运动停止一段时间。 如果需要，可以根据发动机的温度来改变旁通阀的停止时段。
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公开(公告)号：US4140093A
公开(公告)日：1979-02-20
申请号：US792768
申请日：1977-05-02
申请人： Tadashi Hattori , Akira Takata , Tamotsu Fukuda , Takamichi Nakase , Toyota Jidosha Kogyo Kabushiki Kaisha
发明人： Tadashi Hattori , Akira Takata , Tamotsu Fukuda , Takamichi Nakase , Toyota Jidosha Kogyo Kabushiki Kaisha
CPC分类号： F02D41/1482 , F02B1/04
摘要： An air-fuel ratio controlling system for an internal combustion engine including a control circuit for controlling, in accordance with a detected air-fuel ratio, the operation of a drive motor of a control valve mounted in an additional air supply passage. The control circuit includes a timing pulse generator for generating timing pulses synchronized with a running speed of the engine and thus the control valve is intermittently rotated by a predetermined amount in response to the timing pulses. By increasing the frequency of the timing pulses during the periods of rapid acceleration and deceleration, a response to the change in the engine speed is further improved.
摘要翻译： 一种用于内燃机的空燃比控制系统，包括控制电路，该控制电路根据检测到的空燃比控制安装在附加空气供应通道中的控制阀的驱动电动机的操作。 控制电路包括定时脉冲发生器，用于产生与发动机的运行速度同步的定时脉冲，因此控制阀响应于定时脉冲间歇地旋转预定量。 通过在快速加速和减速期间增加定时脉冲的频率，进一步提高对发动机转速变化的响应。
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公开(公告)号：US4106451A
公开(公告)日：1978-08-15
申请号：US782748
申请日：1977-03-30
CPC分类号： F02D41/1482
摘要： An air-fuel ratio adjusting system controls the amount of additional air supply through the bypass passage of the carburetor to ensure optimum engine operation even in a warming up condition of the engine. The air-fuel ratio adjusting system includes an air-fuel ratio sensor disposed in the exhaust manifold, a warm-up sensor for detecting the temperature of engine cooling water or engine block, and a control unit for providing a control signal to a driving motor for the bypass valve. The bypass valve is controlled so that the air-fuel ratio of the mixture becomes the stoichiometric one and at the same time, during the warming up condition, the maximum opening of the bypass valve is limited to a predetermined degree depending on the temperature of the engine.
摘要翻译： 空燃比调节系统控制通过化油器的旁通通道的附加空气供给量，以确保即使在发动机的预热状态下发动机的最佳运转。 空燃比调节系统包括设置在排气歧管中的空燃比传感器，用于检测发动机冷却水或发动机缸体的温度的预热传感器，以及用于向驱动电动机提供控制信号的控制单元 用于旁通阀。 控制旁通阀使得混合物的空燃比变为化学计量比，同时在升温状态下，旁通阀的最大开度根据温度的不同而被限制在预定的程度 发动机。
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公开(公告)号：US4052968A
公开(公告)日：1977-10-11
申请号：US605175
申请日：1975-08-15
IPC分类号： F02D41/14 , F02D43/00 , F02M7/12 , F02M7/133 , F02M23/04 , F02D1/04 , F02B15/00 , F02D33/00 , F02D35/00
CPC分类号： F02D43/00 , F02D41/1441 , F02D41/1488 , F02M23/04 , F02M7/133 , Y02T10/146
摘要： A carburetor for applying air-fuel mixture to an internal combustion engine includes a main passage for applying air-fuel mixture and principally controlling the amount thereof.The air-to-fuel ratio of the air-fuel mixture to be supplied to the engine is detected by an air-to-fuel ratio detector mounted in an exhaust pipe of the engine, and when the detected ratio is lower than a stoichiometrically optimum air-to-fuel ratio for perfect combustion of the air-fuel mixture additional air is supplied to the main passage through a bypass passage, the amount of which is controlled by a bypass valve mounted in the bypass passage.An intake air pressure detecting device is mounted in an intake pipe of the engine, and when the detected pressure (absolute pressure) in the intake pipe becomes higher additional fuel is supplied to the main passage through an auxiliary fuel jet provided in the carburetor.
摘要翻译： 用于向内燃机施加空气 - 燃料混合物的化油器包括用于施加空气 - 燃料混合物并主要控制其量的主通道。
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公开(公告)号：US4051817A
公开(公告)日：1977-10-04
申请号：US556953
申请日：1975-03-10
CPC分类号： F02D41/182 , F02D41/345 , Y02T10/44
摘要： There is provided a fuel injection system for an internal combustion engine comprising fuel injection means provided for each of the cylinders of the engine, a main computing circuit for determining the timing of the injection and the duration of the injection in accordance with the charging and discharging of electric energy corresponding to the number of revolutions of the engine and the quantity of air drawn thereinto and generating pulse signals, a distribution circuit for distributing the pulse signals to the fuel injection means, and a reference signal generating circuit for generating an electric signal to complete the charging of electric energy in the main computing circuit within 720.degree./(2 .times. the number of cylinders) of crank travel, whereby the construction of the system is simplified since there is no need to modify in any way the conventional fuel injection valves or the like and provide the main computing circuit for each of the cylinders, and moreover fuel can be separately injected into each cylinder in turn in accordance with the firing order of the engine.
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公开(公告)号：US4164914A
公开(公告)日：1979-08-21
申请号：US783429
申请日：1977-03-31
CPC分类号： F02M23/04 , F02D35/003 , Y02T10/146
摘要： An apparatus for controlling the air-fuel ratio of an air-fuel mixture to be supplied into a combustion chamber of an internal combustion engine comprises a passage bypassing a carburetor and a throttle valve of the engine for supplying an additional air into the engine intake duct downstream of the throttle valve to dilute the air-fuel mixture to an air-fuel ratio most suited for the engine operation. An air valve is provided in the bypass passage to vary the air-flow cross-sectional area of the passage. The opening of the air valve is controlled mainly in accordance with the air-fuel ratio of the mixture as detected by an air-fuel ratio detector in the path of flow of engine exhaust gases. A variable orifice is provided in the bypass passage downstream of the air valve and defined by a valve seat and a needle valve operatively associated therewith to vary the opening area of the orifice. The needle valve is actuated by a pneumatic valve actuator which is responsive to variations in the engine manifold vacuum. The arrangement is such that the pressure difference across the air valve is kept substantially constant whereby the supply of the additional air is substantially in proportion to the engine intake air and free from influence by the engine manifold vacuum.
摘要翻译： 用于控制供给到内燃机的燃烧室中的空气燃料混合物的空燃比的装置包括绕过化油器的通道和用于向发动机进气管道中供应附加空气的发动机的节气门 在节流阀的下游，将空气 - 燃料混合物稀释到最适合发动机运转的空燃比。 在旁通通道中设置有空气阀，以改变通道的气流横截面积。 主要由发动机废气流动路径中的空燃比检测器检测出的混合气的空燃比主要控制空气阀的开度。 在空气阀下游的旁通通道中设置可变孔口，并由阀座和与其可操作地相关联的针阀限定，以改变孔口的开口面积。 针阀由气动阀致动器致动，该致动器响应发动机歧管真空度的变化。 这种布置使得跨越空气阀的压力差保持基本恒定，由此附加空气的供应基本上与发动机进气成正比并且不受发动机歧管真空的影响。
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