公开(公告)号：US4612894A

公开(公告)日：1986-09-23

申请号：US791526

申请日：1985-10-25

申请人： Yoshihisa Satoh ,  Susumu Akiyoma ,  Katsunori Ito ,  Katsuhiro Ina ,  Masumi Kinugawa ,  Atsushi Suzuki

发明人： Yoshihisa Satoh ,  Susumu Akiyoma ,  Katsunori Ito ,  Katsuhiro Ina ,  Masumi Kinugawa ,  Atsushi Suzuki

IPC分类号： F02D41/18 ,  F02M51/00

CPC分类号： F02D41/187

摘要： An engine control system has a heater and a temperature measuring element with a temperature-resistance characteristic. The heater and element are provided in the intake pipe of an engine. Heating, which initiated by a start pulse signal generated by an engine control unit in synchronism with engine rotation is supplied to the heater through a transistor. When the heater temperature has reached a reference temperature preset in accordance with the intake air temperature measured by the element, a comparator generates an output to deenergize the heater. The period of supplying the heating power is represented by a pulse signal from a flip-flop. This pulse signal is supplied as an airflow measurement signal to the engine control unit. The engine control unit calculates the basic fuel injection quantity and determines if the starting of the pulse signal received by the control unit falls within a predetermined period from the starting of the start pulse signal. If the starting has fallen outside the predetermined period, the output signal is considered to have been generated in response to a noise signal. In this case, a normal output signal next to the output signal generated in response to the noise signal is corrected.

摘要翻译： 发动机控制系统具有加热器和耐温特性的温度测量元件。 加热器和元件设置在发动机的进气管中。 由发动机控制单元产生的与发动机旋转同步的起动脉冲信号启动的加热通过晶体管供给加热器。 当加热器温度达到根据由元件测量的进气温度预设的参考温度时，比较器产生一个使加热器灭弧的输出。 提供加热功率的周期由来自触发器的脉冲信号表示。 该脉冲信号作为气流测量信号提供给发动机控制单元。 发动机控制单元计算基本燃料喷射量，并确定由控制单元接收到的脉冲信号的启动是否落在从开始脉冲信号开始的预定时间段内。 如果启动已经落在预定时间段之外，则输出信号被认为是响应于噪声信号而产生的。 在这种情况下，校正与响应于噪声信号而产生的输出信号相邻的正常输出信号。

公开(公告)号：US4665745A

公开(公告)日：1987-05-19

申请号：US729852

申请日：1985-05-02

申请人： Katsuhiro Ina ,  Yoshihisa Sato ,  Masumi Kinugawa ,  Atsushi Suzuki ,  Katsunori Ito ,  Susumu Akiyama ,  Tiaki Mizuno ,  Toshitaka Yamada ,  Tomoaki Abe

发明人： Katsuhiro Ina ,  Yoshihisa Sato ,  Masumi Kinugawa ,  Atsushi Suzuki ,  Katsunori Ito ,  Susumu Akiyama ,  Tiaki Mizuno ,  Toshitaka Yamada ,  Tomoaki Abe

IPC分类号： G01F1/698 ,  G01F1/68

CPC分类号： G01F1/6986

摘要： An air flowrate measuring apparatus with a heat wire measures the flow rate of the air flowing through the intake pipe of an engine. The apparatus has a temperature sensitive element which has a specific temperature-resistance characteristic and is disposed in the intake pipe. Constant heating voltage is applied to this element in response to a start signal, thus heating the element. When the temperature of the element rises to a specified value, the application of the voltage is stopped. At the same time, a pulse signal whose width corresponds to the period of applying the voltage is generated. The signal is supplied to an interface circuit through a drive circuit driven by a reference voltage which has been also used to control the heating voltage. The interface circuit comprises two wave-shaping circuits. The first wave-shaping circuit has a filter means of a small integration time constant. The second wave-shaping circuit has a filter means whose integration time constant is large enough to remove noise from the input signal.

摘要翻译： 具有热丝的空气流量测量装置测量流过发动机的进气管的空气的流量。 该装置具有温度敏感元件，该温度敏感元件具有特定的耐温特性并且设置在进气管中。 响应于启动信号对该元件施加恒定的加热电压，从而加热元件。 当元件的温度上升到指定值时，停止施加电压。 同时，产生宽度对应于施加电压的周期的脉冲信号。 该信号通过由参考电压驱动的驱动电路提供给接口电路，该参考电压也被用于控制加热电压。 接口电路包括两个波形整形电路。 第一波形整形电路具有小积分时间常数的滤波器装置。 第二波形整形电路具有滤波器装置，其积分时间常数足够大以从输入信号中去除噪声。

公开(公告)号：US4713765A

公开(公告)日：1987-12-15

申请号：US704032

申请日：1985-02-21

申请人： Tomoaki Abe ,  Hideya Fujisawa ,  Norio Omori ,  Masumi Kinugawa ,  Katsunori Ito ,  Susumu Akiyama ,  Tiaki Mizuno ,  Toshitaka Yamada

发明人： Tomoaki Abe ,  Hideya Fujisawa ,  Norio Omori ,  Masumi Kinugawa ,  Katsunori Ito ,  Susumu Akiyama ,  Tiaki Mizuno ,  Toshitaka Yamada

IPC分类号： F02D41/18 ,  F02M51/00 ,  G01F1/68

CPC分类号： F02D41/187

摘要： A control system for an engine has a temperature sensitive element as part of a device for measuring the air flow in an air intake manifold to the engine. Further, a first pulse signal is generated, corresponding to the rotation of the engine, for controlling the setting of a flip-flop. A transistor is conducted in the set state of the flip-flop to supply a heating electric current to the element. The element supplied with the current is raised to the temperature that corresponds to the air flow in the manifold. When the temperature of the element is raised until the specified temperature difference to the air temperature (measured by a sub temperature sensitive element) is set, the temperature difference is detected by a comparator, and the flip-flop is reset by the detection signal. A pulse-shaped signal corresponding to the set state of the flip-flop is produced as a measurement output signal, supplied as one detection signal of the operating state of the engine to an engine control unit, and the current to the element is controlled to be supplied by the pulse-shaped signal.

摘要翻译： 用于发动机的控制系统具有温度敏感元件，作为用于测量到发动机的进气歧管中的气流的装置的一部分。 此外，产生与发动机的旋转对应的第一脉冲信号，用于控制触发器的设定。 晶体管在触发器的置位状态下被导通，以向元件提供加热电流。 提供电流的元件升高到对应于歧管中气流的温度。 当元件的温度升高直到与空气温度（由次级温度敏感元件测量）的指定温度差设定为止时，通过比较器检测温度差，并且触发器由检测信号复位。 产生与触发器的设定状态相对应的脉冲状信号作为测量输出信号，作为发动机的运行状态的一个检测信号提供给发动机控制单元，并且将对该元件的电流控制为 由脉冲信号提供。

公开(公告)号：US4671242A

公开(公告)日：1987-06-09

申请号：US736373

申请日：1985-05-21

申请人： Susumu Akiyama ,  Katsunori Ito ,  Yuzi Hirabayashi ,  Masumi Kinugawa ,  Norio Omori

发明人： Susumu Akiyama ,  Katsunori Ito ,  Yuzi Hirabayashi ,  Masumi Kinugawa ,  Norio Omori

IPC分类号： F02D41/00 ,  F02D41/18 ,  F02D41/24 ,  F02D41/34

CPC分类号： F02D41/2412 ,  F02D41/182 ,  F02D41/187

摘要： An engine control apparatus has an air flow rate measuring device for measuring an intake air flow rate. A temperature sensing element having a temperature characteristic and constituting the device is arranged in an intake pipe. The device generates an output pulse signal having a pulse width T corresponding to the intake air flow rate. An engine control unit has the one-dimensional map for storing the relationship between the engine speed N and the pulse width to of the signal corresponding to the air flow rate. This data to is read out from the one-dimensional map in accordance with the engine speed N. Subsequently, the data to is subtracted from the data T to calculate a time duration t. The unit also has a two-dimensional map for storing the relationship between each time duration t and the corresponding rate G/N in correspondence with each of the present engine speeds. A corresponding rate G/N is read out from the two-dimensional map in response to the calculated time duration t. The resultant rate G/N is used to calculate fuel injection quantity.

摘要翻译： 发动机控制装置具有用于测量进气流量的空气流量测量装置。 具有温度特性并构成装置的温度感测元件设置在进气管中。 该装置产生具有对应于进气流量的脉冲宽度T的输出脉冲信号。 发动机控制单元具有存储发动机转速N与对应于空气流量的信号的脉冲宽度对的关系的一维映射。 根据发动机转速N从一维映射中读出该数据。接着，从数据T中减去数据，计算持续时间t。 该单元还具有用于存储与每个当前发动机速度相对应的每个持续时间t和相应速率G / N之间的关系的二维图。 响应于计算的持续时间t，从二维图中读出对应的速率G / N。 合成速率G / N用于计算燃料喷射量。

公开(公告)号：US4669306A

公开(公告)日：1987-06-02

申请号：US743492

申请日：1985-06-11

申请人： Susumu Akiyama ,  Katsunori Ito ,  Toshitaka Yamada ,  Tiaki Mizuno ,  Masumi Kinugawa

发明人： Susumu Akiyama ,  Katsunori Ito ,  Toshitaka Yamada ,  Tiaki Mizuno ,  Masumi Kinugawa

IPC分类号： G01F1/68 ,  G01F1/698 ,  G01F15/12

CPC分类号： G01F1/6986 ,  G01F1/6983

摘要： A heat generating element having a thermal characteristic such that its resistance varies in response to changes in temperature is provided in the intake pipe of an engine. A heating power, the voltage of which is set by a reference voltage source, is supplied to the heat generating element via a transistor. The supply of this heating power is controlled by a start pulse signal periodically generated by a set flip-flop circuit when the ignition switch is on. When the heat generating element reaches a predetermined temperature, the supply is cut off by the flip-flop circuit. A measurement signal having a pulse width corresponding to the time period of heating power supply is generated from the flip-flop circuit. The opening of the ignition switch is detected and a one-shot multivibrator is driven to produce a burn-off signal having a pulse width to which the burn-off period corresponds. This burn-off control signal turns the transistor on and heating power is supplied to the heat generating element and the voltage of the reference power source is reduced so that the voltage of the heating power is switched to a low level.

摘要翻译： 在发动机的进气管中设置具有热特性使得其电阻随温度变化而变化的发热元件。 其电压由参考电压源设定的加热功率通过晶体管提供给发热元件。 当点火开关接通时，通过由设置的触发器电路周期性地产生的起动脉冲信号来控制该加热功率的供应。 当发热元件达到预定温度时，电源被触发器电路切断。 从触发电路产生具有与加热电源的时间段对应的脉冲宽度的测量信号。 检测点火开关的打开，并且驱动单稳态多谐振荡器以产生具有燃烧时间对应的脉冲宽度的燃烧断开信号。 该熄火控制信号使晶体管接通，向发热元件供给加热电力，降低基准电源的电压，使加热电力的电压切换为低电平。

公开(公告)号：US4736302A

公开(公告)日：1988-04-05

申请号：US742524

申请日：1985-06-07

申请人： Masumi Kinugawa ,  Norio Omori ,  Tomoaki Abe ,  Katsunori Ito ,  Susumu Akiyama ,  Yuzi Hirabayashi

发明人： Masumi Kinugawa ,  Norio Omori ,  Tomoaki Abe ,  Katsunori Ito ,  Susumu Akiyama ,  Yuzi Hirabayashi

IPC分类号： F02D41/00 ,  F02D41/18 ,  F02D41/24 ,  F02D41/26 ,  F02D45/00 ,  H01L21/302 ,  F02M51/00 ,  G01F1/68

CPC分类号： F02D41/187 ,  F02D41/263

摘要： A system for controlling the operating condition of an engine in which a temperature sensing element constitutes an airflow measuring device disposed in an intake air passage of the engine. The temperature sensing element is supplied with a heating current in response to a start pulse signal produced with every one-half period of each combustion cycle of the engine. A comparator delivers an output signal when a reference temperature set on the basis of the air temperature measured by an auxiliary temperature sensing element is reached by the temperature of the temperature sensing element. A pulse signal indicative of the time interval between the generation of the start pulse signal and a rise in the output signal of the comparator is delivered as an airflow measurement signal. The average airflow quantity responsive to one combustion cycle of the engine is detected, and a correction factor K is calculated from the difference between two airflow rate data measured in each combustion cycle and the average airflow quantity. Based on the correction factor K, the injection quantity, injection timing and the like are calculated.

摘要翻译： 一种用于控制发动机的操作状态的系统，其中温度感测元件构成设置在发动机的进气通道中的气流测量装置。 响应于在发动机的每个燃烧循环的每半个周期产生的起动脉冲信号，向温度感测元件供应加热电流。 当基于由辅助温度感测元件测量的空气温度设定的参考温度达到温度感测元件的温度时，比较器输出输出信号。 指示起始脉冲信号的产生和比较器的输出信号的上升之间的时间间隔的脉冲信号作为气流测量信号被输送。 检测响应于发动机的一个燃烧循环的平均气流量，并且根据在每个燃烧循环中测量的两个气流速率数据与平均气流量之间的差计算校正因子K. 基于校正因子K，计算喷射量，喷射正时等。

公开(公告)号：US4571991A

公开(公告)日：1986-02-25

申请号：US645393

申请日：1984-08-29

申请人： Tomoaki Abe ,  Masumi Kinugawa ,  Atsushi Suzuki

发明人： Tomoaki Abe ,  Masumi Kinugawa ,  Atsushi Suzuki

IPC分类号： G01F1/68 ,  G01F1/698 ,  G01M15/00

CPC分类号： G01F1/698

摘要： An air flow detecting element is located in the air flow to be measured. This air flow detecting element comprises a heater made of resistant material having a positive temperature coefficient and wound around a first heat resistant frame, a first heat sensitive element wound around the first frame together with the heater and made of resistant material having a positive temperature coefficient and receiving heat from the heater, and a second heat sensitive element wound around a second heat resistant frame and made of resistant material having a positive temperature coefficient, and serving to measure the temperature of the air. A bridge circuit comprises a series circuit consisting of the heater and fixed resistances connected in series with each other, and a series circuit consisting of the first and second heat sensitive elements connected in series with each other. Potential differences at the output terminal of this bridge circuit are compared by an OP amplifier. The base of a transistor, with controls the power source current relative to the bridge circuit, is controlled by the OP amplifier. An output voltage signal which corresponds to the value of the current flowing to the heater is detected and supplied as a terminal voltage of the fixed resistance.

摘要翻译： 空气流量检测元件位于要测量的空气流中。 这种气流检测元件包括由耐温材料制成的加热器，其具有正温度系数并缠绕在第一耐热框架上，第一热敏元件与加热器一起缠绕在第一框架周围，并由具有正温度系数的电阻材料制成 并且从加热器接收热量，以及缠绕在第二耐热框架周围并由具有正温度系数的耐热材料制成并用于测量空气温度的第二热敏元件。 桥式电路包括由加热器和彼此串联连接的固定电阻组成的串联电路，以及由彼此串联连接的第一和第二热敏元件组成的串联电路。 该桥式电路输出端的电位差由OP放大器进行比较。 控制电源电流相对于桥式电路的晶体管的基极由OP放大器控制。 检测并输出与流过加热器的电流值对应的输出电压信号作为固定电阻的端子电压。

公开(公告)号：US4945883A

公开(公告)日：1990-08-07

申请号：US318185

申请日：1989-03-02

申请人： Kenichi Ono ,  Masumi Kinugawa ,  Masakazu Ninomiya ,  Atsushi Suzuki

发明人： Kenichi Ono ,  Masumi Kinugawa ,  Masakazu Ninomiya ,  Atsushi Suzuki

IPC分类号： F02D41/04 ,  F02B1/04 ,  F02B75/02 ,  F02D41/00 ,  F02D41/18 ,  F02M51/00

CPC分类号： F02D41/187 ,  F02B1/04 ,  F02B2075/027

摘要： An internal combustion engine control device is constructed to estimate an engine air intake quantity based on an engine speed when the engine is running in an intake air pulsation generating range to control the engine in accordance with the air intake quantity thus estimated. The estimated air intake quantity is corrected by a correction value which is related to the density of the intake air.

摘要翻译： 内燃机控制装置被构造成当发动机在进气脉动产生范围内行驶时基于发动机转速来估计发动机进气量，以根据如此估计的进气量来控制发动机。 通过与进气密度相关的校正值来校正估计进气量。

公开(公告)号：US4683858A

公开(公告)日：1987-08-04

申请号：US863938

申请日：1986-05-16

申请人： Yoshihisa Sato ,  Masumi Kinugawa ,  Susumu Akiyama ,  Toshitaka Yamada ,  Tiaki Mizuno ,  Atsushi Suzuki

发明人： Yoshihisa Sato ,  Masumi Kinugawa ,  Susumu Akiyama ,  Toshitaka Yamada ,  Tiaki Mizuno ,  Atsushi Suzuki

IPC分类号： F02D45/00 ,  F02D41/00 ,  F02D41/18 ,  G01F1/696 ,  G01F1/698 ,  F02D41/34 ,  G01M15/00

CPC分类号： G01F1/6965 ,  F02D41/187 ,  G01F1/698 ,  G01F1/6986

摘要： In an apparatus for controlling an engine, as an air flow sensor for measuring intake air flow quantity, a heater resistor having temperature-resistance characteristic and a temperature sensitive resistor for sensing air temperature are provided in an intake passage, and heating electric power is supplied to the heater resistor in response to a start signal generated periodically. The heating electric power is cut off when the temperature of the heater resistor is raised to a specified reference temperature predetermined in accordance with the air temperature, so that an output signal indicative of the time width in which the heating electric power is supplied is applied to an electronic control unit to measure air flow quantity therefrom. Further, compensation coefficient stored in a memory is derived in correspondence to the intake air temperature sensed by the temperature sensitive resistor, and the output signal is compensated for by the compensation coefficient to compensate the measured air flow quantity. Based on the compensated air flow quantity, fuel injection quantity, ignition timing or the like is computed in the electronic control unit.

摘要翻译： 在用于控制发动机的装置中，作为用于测量进气流量的气流传感器，具有耐温特性的加热电阻器和用于感测空气温度的感温电阻器设置在进气通道中，并且供应加热电力 响应于周期性地产生的启动信号到加热器电阻器。 当加热电阻器的温度升高到根据空气温度预定的指定参考温度时，加热电力被切断，从而将表示加热电力的时间宽度的输出信号施加到 电子控制单元，用于测量气流量。 此外，存储在存储器中的补偿系数相应于由感温电阻感测的进气温度导出，并且通过补偿系数补偿输出信号以补偿测量的空气流量。 基于补偿空气流量，在电子控制单元中计算燃料喷射量，点火正时等。

公开(公告)号：US5343701A

公开(公告)日：1994-09-06

申请号：US949689

申请日：1992-09-23

申请人： Hisayo Douta ,  Masumi Kinugawa ,  Atsushi Suzuki

发明人： Hisayo Douta ,  Masumi Kinugawa ,  Atsushi Suzuki

IPC分类号： F02D41/10 ,  F02D41/14 ,  F02D41/16

CPC分类号： F02D41/1486 ,  F02D41/1477 ,  F02D41/2445 ,  F02D41/2454 ,  F02D41/2474

摘要： An air-fuel ratio control system for an internal combustion engine utilizes a pre-stored standard relation between an air-fuel ratio sensor signal and a standard air-fuel ratio indicative value for deriving the standard air-fuel ratio indicative value based on the sensor signal. The system further utilizes a pre-stored modified relationship between the standard air-fuel ratio indicative value and a for-control air-fuel ratio indicative value for deriving a for-control air-fuel ratio indicative value based on the derived standard air-fuel ratio indicative value. In the modified relationship, the for-control air-fuel ratio indicative value varies with respect to a corresponding variation of the standard air-fuel ratio indicative value within a given range across the standard air-fuel ratio indicative value representing a stoichiometric air-fuel ratio.

摘要翻译： 用于内燃机的空燃比控制系统利用空燃比传感器信号和标准空燃比指示值之间的预先存储的标准关系，以基于传感器得出标准空燃比指示值 信号。 该系统进一步利用标准空燃比指示值和用于控制空燃比指示值之间的预先存储的改进关系，用于基于导出的标准空气燃料导出控制空燃比指示值 比率指标值。 在修改关系中，控制空燃比指示值相对于表示理论空燃比的标准空燃比指示值的给定范围内的标准空燃比指示值的相应变化而变化 比。