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公开(公告)号：US4327685A
公开(公告)日：1982-05-04
申请号：US102899
申请日：1979-12-12
CPC分类号： F02M69/46 , F02M69/043 , F02M9/127
摘要： An intake system for internal combustion engines comprises a throttling system mounted in an intake pipe between a fuel injection valve and an intake manifold, the throttling system including a stationary valve body fixed in the intake pipe in opposed relation with the injection valve and a hollow valve body mounted in the intake pipe for movement in the axial direction of the intake pipe. The hollow valve body has a downwardly converged inner wall surface surrounding the stationary valve body to define therebetween valve opening of variable opening area. The stationary valve body includes a frusto-conical portion and a cylindrical portion, of which lower edge is in the form of sinusoidal wave to cooperate with the hollow valve body in producing the valve opening of gradually increasing opening area.
摘要翻译： 用于内燃机的进气系统包括安装在燃料喷射阀和进气歧管之间的进气管中的节流系统，所述节流系统包括固定在进气管中的与喷射阀相对的静止阀体和中空阀 主体安装在进气管中，用于沿进气管的轴向移动。 中空阀体具有围绕固定阀体的向下收敛的内壁表面，以在其间限定可变开口面积的阀开口。 固定阀体包括截头圆锥形部分和圆柱形部分，其下边缘为正弦波形状，以与中空阀体协作以产生逐渐增加的开口面积的阀门开口。
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公开(公告)号：US4419972A
公开(公告)日：1983-12-13
申请号：US75683
申请日：1979-09-13
CPC分类号： F02M9/1275
摘要： An intake system for an internal combustion engine comprises a throttling system mounted in an intake pipe between a fuel injection valve and an intake manifold, the throttling system including a stationary valve body fixed in the intake pipe in opposition to the injection valve and a hollow valve body mounted in the intake pipe movably in an axial direction of the intake pipe. The hollow valve body has a downwardly converged inner wall surface surrounding the stationary valve body to define therebetween valve opening of variable opening area. The axial movement of the hollow valve body causes the change in the opening area of the valve opening to control an amount of air-fuel mixture charged therethrough into the engine.
摘要翻译： 一种用于内燃机的进气系统包括安装在燃料喷射阀和进气歧管之间的进气管中的节流系统，所述节流系统包括固定在进气管中的与喷射阀相对的静止阀体和中空阀 主体安装在进气管中，沿进气管的轴向可移动。 中空阀体具有围绕固定阀体的向下收敛的内壁表面，以在其间限定可变开口面积的阀开口。 中空阀体的轴向运动导致阀开口的开口面积的变化来控制通过其进入发动机的空气燃料混合物的量。
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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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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：US4173957A
公开(公告)日：1979-11-13
申请号：US802311
申请日：1977-06-01
CPC分类号： F02D41/1482 , Y02T10/42
摘要： An additional air supply system for adjusting the air-fuel ratio of a mixture includes the improved control unit for actuating, at two different speeds, a drive motor of a bypass valve disposed in an additional air supply path. The control unit is provided with an air-fuel ratio discriminating circuit for generating high and low level signals by comparing a detected air-fuel ratio with the stoichiometric ratio, and an actuating circuit for producing pulse signals at each instant of inversion of the signal levels of the air-fuel ratio discriminating circuit in such that for a predetermined period from the instant of inversion a high frequency pulse signal is produced and then a low frequency pulse signal is produced for the remaining period until the next inversion. Since the pusle signals having two different frequencies are applied to the drive motor of the bypass valve, the bypass valve is drived at a fast speed to a predetermined amount of opening or closing and then moved slowly until the next inversion of the signal level.
摘要翻译： 用于调节混合物的空燃比的另外的空气供应系统包括改进的控制单元，用于以两种不同的速度驱动设置在附加空气供应路径中的旁通阀的驱动马达。 控制单元设置有用于通过将检测到的空燃比与化学计量比进行比较来产生高电平和低电平信号的空燃比鉴别电路，以及用于在信号电平的每个反转时刻产生脉冲信号的致动电路 空燃比鉴别电路，在从反转时刻开始的规定期间，产生高频脉冲信号，然后产生低频脉冲信号，直至下一次反转为止。 由于具有两个不同频率的消息信号被施加到旁通阀的驱动电动机，旁通阀以快速的速度被驱动到预定的开启或关闭量，然后缓慢地移动直到信号电平的下一个反转。
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公开(公告)号：US4285319A
公开(公告)日：1981-08-25
申请号：US91755
申请日：1979-11-06
CPC分类号： F02D41/1481 , F02B1/04
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：US4175521A
公开(公告)日：1979-11-27
申请号：US782733
申请日：1977-03-30
CPC分类号： F02D41/1482 , F02D41/068 , F02D43/00
摘要： Additional air is supplied through an additional air passage having a bypass valve into the main air passage of an internal combustion engine downstream of the throttle valve, and the amount of the additional air is controlled in accordance with the opening of the bypass valve. The direction of rotation of a bypass valve driving pulse motor is controlled in accordance with the output signal of an air-fuel mixture ratio sensor mounted in the exhaust system of the engine. Also the rotational speed of the pulse motor is varied in accordance with the operating conditions of the engine during warm-up operation.
摘要翻译： 附加的空气通过具有旁通阀的附加空气通道供应到节流阀下游的内燃机的主空气通道中，并且根据旁通阀的打开来控制附加空气的量。 根据安装在发动机的排气系统中的空气 - 燃料混合比传感器的输出信号来控制旁通阀驱动脉冲电动机的旋转方向。 此外，脉冲电动机的转速也根据发动机在预热运转时的运转条件而变化。
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公开(公告)号：US4146000A
公开(公告)日：1979-03-27
申请号：US803936
申请日：1977-06-06
CPC分类号： F02D41/1482
摘要： In an air flow control system including a gas sensor for detecting the concentration of a constituent of the exhaust gases from an internal combustion engine, an air passage for supplying additional air into the intake system or exhaust system of the engine, a by-pass valve for varying the passage area of the additional air passage, and means for controlling the opening and closing of the by-pass valve in accordance with the detection signal from the gas sensor whereby the amount of additional air supplied into the intake system or exhaust system of the engine is controlled in accordance with the concentration of the constituent of the exhaust gases, there is further provided an acceleration/deceleration sensor for detecting acceleration or deceleration of the engine, whereby when a transition from the acceleration or deceleration operating condition to the steady-state operating condition is detected, the opening and closing control of the by-pass valve is accomplished in such a manner that the amount of opening and closing movement of the by-pass valve is gradually decreased. Thus, when the engine comes into the steady-state operation from the transient operation, the rate of change in the opening of the by-pass valve is gradually decreased to reduce variation of the air-fuel ratio upon the transition from the acceleration/deceleration operation to the constant speed operation.
摘要翻译： 在包括用于检测来自内燃机的废气的组分的浓度的气体传感器的气流控制系统中，用于向发动机的进气系统或排气系统中供给附加空气的空气通道，旁通阀 用于改变附加空气通道的通道面积，以及用于根据来自气体传感器的检测信号控制旁通阀的打开和关闭的装置，由此供应到进气系统或排气系统中的附加空气的量 根据排气成分的浓度对发动机进行控制，还设置有用于检测发动机的加速或减速的加减速传感器，由此，当从加速或减速运行状态向稳定运转状态转变时， 检测到状态运行状态，旁路阀的打开和关闭控制是以这种方式完成的 r，旁通阀的开闭运动量逐渐减小。 因此，当发动机从瞬时动作进入稳态运转时，旁通阀的开度变化率逐渐降低，以减少从加速/减速过渡时的空燃比的变化 操作到恒速运行。
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