公开(公告)号：US4214558A

公开(公告)日：1980-07-29

申请号：US836014

申请日：1977-09-23

申请人： Tetsuji Nishioka ,  Masaharu Asano ,  Makoto Anzai ,  Akio Hosaka

发明人： Tetsuji Nishioka ,  Masaharu Asano ,  Makoto Anzai ,  Akio Hosaka

IPC分类号： F02D41/14 ,  F02M7/24 ,  F02B3/00

CPC分类号： F02D41/1484

摘要： A fuel control system for an internal combustion engine includes an exhaust gas sensor from which feedback control signal is derived, a limiter for limiting the maximum and minimum voltages of the control signal and a triangular wave generator. The triangular wave has a constant amplitude peak of which the maximum value is slightly greater than the maximum voltage of the control signal and the minimum value is slightly below the minimum voltage of the control signal. A comparator is provided to produce an output at one of two binary levels depending upon whether the control signal is above or below the instantaneous value of the triangular wave. The output from the comparator is a train of pulses whose duty cycle ranges from predetermined minimum to maximum values which correspond respectively to the minimum open and closure times of air-fuel mixing control valves.

摘要翻译： 用于内燃机的燃料控制系统包括从其导出反馈控制信号的排气传感器，用于限制控制信号的最大和最小电压的限幅器和三角波发生器。 三角波具有恒定幅度峰值，其最大值稍大于控制信号的最大电压，最小值略低于控制信号的最小电压。 提供比较器以根据控制信号是否高于或低于三角波的瞬时值来产生两个二进制电平之一的输出。 比较器的输出是一列脉冲，其占空比范围从分别对应于空燃混合控制阀的最小打开和关闭时间的预定最小值到最大值。

公开(公告)号：US4131089A

公开(公告)日：1978-12-26

申请号：US767134

申请日：1977-02-09

申请人： Takeshi Fujishiro ,  Shigeo Aono ,  Akio Hosaka ,  Masaharu Asano ,  Nobuzi Manaka ,  Mituhiko Ezoe

发明人： Takeshi Fujishiro ,  Shigeo Aono ,  Akio Hosaka ,  Masaharu Asano ,  Nobuzi Manaka ,  Mituhiko Ezoe

IPC分类号： F02D41/14 ,  F02B3/08 ,  F01N3/08 ,  F02M7/12

CPC分类号： F02D41/1479

摘要： A reference voltage, which is compared with an output voltage of an exhaust gas sensor in a differential signal generator of an electronic closed loop air-fuel ratio control system, changes depending upon a mean value of an output of the exhaust gas sensor provided in an exhaust pipe extending from an internal combustion engine. Furthermore, the magnitude of the reference voltage is limited in such a manner as to be within a predetermined range, or in other words, the magnitude of the reference voltage is limited at at least one of an upper and a lower values thereof.

摘要翻译： 与电子闭环空燃比控制系统的差分信号发生器中的废气传感器的输出电压进行比较的参考电压根据设置在电子闭环空燃比控制系统中的排气传感器的输出的平均值而变化 从内燃机延伸的排气管。 此外，参考电压的大小以限制在预定范围内的方式被限制，或者换句话说，参考电压的大小被限制在其上限值和下限值中的至少一个。

公开(公告)号：US4313412A

公开(公告)日：1982-02-02

申请号：US131094

申请日：1980-03-18

申请人： Akio Hosaka ,  Masaharu Asano

发明人： Akio Hosaka ,  Masaharu Asano

IPC分类号： F02D41/34 ,  F02B1/04 ,  F02D41/06 ,  F02D41/08 ,  F02D41/10 ,  F02D41/26 ,  F02D45/00 ,  F02B3/00

CPC分类号： F02D41/086 ,  F02D41/064 ,  F02D41/068 ,  F02D41/107 ,  F02D41/263 ,  F02B1/04

摘要： A fuel supply control system is disclosed which uses a stored program type digital computer for calculating a basic amount of fuel and modifying the basic amount in accordance with various correction factors dependent upon engine operating conditions so as to determine an actual amount of fuel supplied to an engine. The actual fuel amount is determined by adding all correction factors dependent upon engine temperature and multiplying the sum by the basic fuel amount.

摘要翻译： 公开了一种燃料供给控制系统，其使用存储的程序型数字计算机来计算基本燃料量并且根据发动机操作条件根据各种校正因子来修改基本量，以便确定供应给 发动机。 实际燃料量通过加上所有依赖于发动机温度的校正因子并将总和乘以基本燃料量来确定。

公开(公告)号：US4155335A

公开(公告)日：1979-05-22

申请号：US863676

申请日：1977-12-23

申请人： Akio Hosaka ,  Masaharu Asano

发明人： Akio Hosaka ,  Masaharu Asano

IPC分类号： F02D41/14 ,  F02B33/00 ,  F01N3/00

CPC分类号： F02D41/148

摘要： The variation range defined between the maximum and the minimum output voltages of a gas sensor in the exhaust passage is detected and compared with a reference signal which can have hysterisis characteristics. Engine operational parameters are utilized to disable and/or reactivate the system as well as the sensed sensor response, while the air-fuel ratio can be arbitrarily varied to test if the sensor is below an effective working temperature and reactivate the system.

摘要翻译： 检测排气通道中气体传感器的最大和最小输出电压之间的变化范围，并将其与具有滞后特性的参考信号进行比较。 发动机操作参数用于禁用和/或重新启动系统以及感测到的传感器响应，同时可以任意改变空燃比以测试传感器是否低于有效工作温度并重新启动系统。

公开(公告)号：US4142482A

公开(公告)日：1979-03-06

申请号：US767133

申请日：1977-02-09

申请人： Masaharu Asano ,  Takeshi Fujishiro ,  Shigeo Aono ,  Akio Hosaka ,  Nobuzi Manaka ,  Mituhiko Ezoe

发明人： Masaharu Asano ,  Takeshi Fujishiro ,  Shigeo Aono ,  Akio Hosaka ,  Nobuzi Manaka ,  Mituhiko Ezoe

IPC分类号： F02D41/14 ,  F02B3/08 ,  F01N3/08 ,  F02M7/12

CPC分类号： F02D41/1479 ,  F02D41/1456

摘要： Emission control apparatus for internal combustion engines is provided with a sensor for detecting the concentration of a particular exhaust composition in the emissions from the engine. A signal indicating the deviation of the mixture ratio from a controlled point is generated by comparing the output from the sensor with a reference level, the signal being modified in amplitude according to a predetermined control characteristic and used to regulate the air-fuel mixture ratio at the desired control point. The varying magnitude of the sensed concentration is smoothed into a signal of slowly varying magnitude which is used to control the reference level so that error introduced into the deviation indicating signal due to the change with time in the output performance of the exhaust composition sensor is self-compensated. A level sensor is provided to detect when the reference level reaches an end of the control range to change the operating mode of the engine from closed-loop to open-loop mode.

摘要翻译： 用于内燃机的排放控制装置设置有用于检测来自发动机的排放物中的特定排气组合物的浓度的传感器。 通过将传感器的输出与基准电平进行比较，产生混合比与受控点的偏差的信号，该信号根据预定的控制特性在幅度上进行改变，并用于调节空气 - 燃料混合比在 所需的控制点。 感测浓度的变化幅度被平滑化成缓慢变化幅度的信号，其用于控制​​参考电平，使得由于排气组成传感器的输出性能随时间变化而引入到偏差指示信号中的误差是自身的 补偿。 提供了一个液位传感器来检测参考电平何时达到控制范围的结束，以将发动机的运行模式从闭环模式转换到开环模式。

公开(公告)号：US4215656A

公开(公告)日：1980-08-05

申请号：US767988

申请日：1977-02-11

申请人： Nobuzi Manaka ,  Takeshi Fujishiro ,  Shigeo Aono ,  Akio Hosaka ,  Masaharu Asano ,  Mituhiko Ezoe

发明人： Nobuzi Manaka ,  Takeshi Fujishiro ,  Shigeo Aono ,  Akio Hosaka ,  Masaharu Asano ,  Mituhiko Ezoe

IPC分类号： F02D41/14 ,  F02B3/08 ,  F02M7/12

CPC分类号： F02D41/1479

摘要： A circuit is provided in an electronic closed loop air-fuel ratio control system for starting and terminating the operation of the system at different voltages from an exhaust gas sensor.

摘要翻译： 电路设置在电子闭环空燃比控制系统中，用于在与废气传感器不同的电压下启动和终止系统的操作。

公开(公告)号：US4183335A

公开(公告)日：1980-01-15

申请号：US863958

申请日：1977-12-23

申请人： Masaharu Asano ,  Akio Hosaka

发明人： Masaharu Asano ,  Akio Hosaka

IPC分类号： F02D41/14 ,  F02B3/00

CPC分类号： F02D41/1479 ,  F02D2200/0606

摘要： In a fuel mixture control system including an exhaust gas sensor located within an exhaust system of an internal combustion engine, maximum and minimum peak values of the gas sensor output are detected. A direct-current pedestal is added to the detected minimum peak value. A comparator detects when the added minimum peak exceeds the detected maximum peak value to provide a disabling signal to the mixture control system to switch its operational mode from closed loop control to open loop control when the temperature of the gas sensor falls below its operating temperature typically during prolonged idle condition.

摘要翻译： 在包括位于内燃机的排气系统内的排气传感器的燃料混合物控制系统中，检测气体传感器输出的最大和最小峰值。 在检测到的最小峰值中增加直流基座。 比较器检测何时添加的最小峰值超过检测到的最大峰值，以便当混合气体传感器的温度通常低于其工作温度时向混合物控制系统提供禁用信号以将其操作模式从闭环控制切换到开环控制 在长时间的闲置状态。

公开(公告)号：US4167925A

公开(公告)日：1979-09-18

申请号：US863603

申请日：1977-12-23

申请人： Akio Hosaka ,  Masaharu Asano

发明人： Akio Hosaka ,  Masaharu Asano

IPC分类号： F02D41/14 ,  F02B33/00 ,  F01N3/00

CPC分类号： F02D41/1479 ,  F02D41/1456

摘要： A reference signal with which the output of a gas sensor is compared is produced by detecting the maximum and minimum values of the output of the gas sensor and adding via a voltage divider these values to each other. The variation of the reference signal may be limited with predicted maximum and minimum values of the output of the gas sensor. The reference signal produced in such a manner may be utilized for disabling and reactivating the feedback control.

摘要翻译： 通过检测气体传感器的输出的最大值和最小值，并通过分压器将这些值相加来产生比较气体传感器的输出的参考信号。 参考信号的变化可以通过气体传感器的输出的预测最大值和最小值来限制。 以这种方式产生的参考信号可用于禁用和重新激活反馈控制。

公开(公告)号：US4153023A

公开(公告)日：1979-05-08

申请号：US863604

申请日：1977-12-23

申请人： Masaharu Asano ,  Akio Hosaka

发明人： Masaharu Asano ,  Akio Hosaka

IPC分类号： F02D41/14 ,  F02B75/10

CPC分类号： F02D41/1455

摘要： In a mixture control system having an exhaust gas sensor located in an exhaust system of an internal combustion engine for controlling the air-fuel ratio of the mixture supplied to the engine, a detection system for detecting when the temperature of the exhaust gas sensor is within its normal operating range. A deviation signal is derived from the exhaust gas sensor to represent the deviation of the air-fuel ratio within the exhaust system from a desired air-fuel ratio. The peak value of the deviation signal is detected and stored in a storage circuit and compared with a threshold which represents the normal operating temperature of the exhaust gas sensor to provide a disabling signal for the mixture control system to suspend feedback control operation when the temperature of the sensor falls below its normal operating temperature. The exhaust gas sensor is then supplied with a current in response to the presence of the disabling signal so that the voltage across the sensor's internal impedance increases because of its high impedance value at low sensor temperatures. The output from the gas sensor is compared with a preset value higher than the maximum output level of the sensor when operating at or above its normal operating temperature but lower than the minimum output level of the sensor when operating below its normal operating temperature with the current being fed. When the gas sensor output falls below the preset value, the system determines that the temperature of the gas sensor has risen above its normal operating temperature to resume feedback control operation.

摘要翻译： 在具有位于内燃机的排气系统中的排气传感器的混合控制系统中，用于控制供给发动机的混合物的空燃比，用于检测排气传感器的温度何时在内的检测系统 其正常工作范围。 从排气传感器得到偏差信号，以表示排气系统内的空燃比与期望的空燃比的偏差。 偏差信号的峰值被检测并存储在存储电路中，并与表示废气传感器的正常工作温度的阈值进行比较，以提供用于混合控制系统的禁用信号，以在混合控制系统的温度 传感器低于正常工作温度。 然后响应于禁用信号的存在而向排气传感器提供电流，使得传感器内部阻抗两端的电压由于其在低传感器温度下的高阻抗值而增加。 将气体传感器的输出与在正常工作温度以上工作时高于传感器的最大输出电平的预设值进行比较，但低于传感器在正常工作温度以下运行时的最小输出电平 被喂食 当气体传感器输出低于预设值时，系统确定气体传感器的温度升高到其正常工作温度以恢复反馈控制操作。

公开(公告)号：US4132200A

公开(公告)日：1979-01-02

申请号：US767989

申请日：1977-02-11

申请人： Masaharu Asano ,  Shigeo Aono ,  Akio Hosaka ,  Kokichi Ochiai ,  Michiyoshi Yamane

发明人： Masaharu Asano ,  Shigeo Aono ,  Akio Hosaka ,  Kokichi Ochiai ,  Michiyoshi Yamane

IPC分类号： F02D41/14 ,  F02B75/10

CPC分类号： F02D41/1479 ,  F02D41/149

摘要： A closed-loop emission control apparatus for internal combustion engines includes exhaust composition sensor for feedback control of the air-fuel mixture. When the temperature in the exhaust passage is lower than the operating temperature of the sensor, control is switched to an open-loop mode. The feedback control signal is fluctuated above and below a predetermined DC bias at periodic intervals during the open-loop mode to switch the control to the closed-loop mode in a minimum transition time as soon as the sensor's temperature condition warrants feedback control.

摘要翻译： 用于内燃机的闭环排放控制装置包括用于空气 - 燃料混合物的反馈控制的排气组成传感器。 当排气通道中的温度低于传感器的工作温度时，控制切换到开环模式。 一旦传感器的温度条件需要反馈控制，反馈控制信号在开环模式期间以周期性间隔在预定的DC偏压之上和之下波动，以在最小转换时间内将控制切换到闭环模式。