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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
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。
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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
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。
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公开(公告)号：US4680964A
公开(公告)日：1987-07-21
申请号：US874854
申请日：1986-06-16
申请人： Yoshihisa Sato , Masumi Kinugawa , Susumu Akiyama , Toshitaka Yamada , Tiaki Mizuno , Atsushi Suzuki , Kengo Sugiura
发明人： Yoshihisa Sato , Masumi Kinugawa , Susumu Akiyama , Toshitaka Yamada , Tiaki Mizuno , Atsushi Suzuki , Kengo Sugiura
CPC分类号： G01F1/698 , G01F1/6986 , G01P5/12
摘要： A heater, which comprises an element whose resistance varies with changes in temperature, and a temperature element are provided in the air intake pipe of an engine. This heater and temperature element together with resistors form a bridge circuit to which heating power is supplied via a transistor. An engine control unit generates start signals Tin simultaneously with the rotation of the engine. A flip-flop circuit is set by these start signals and, when set, the transistor is turned on and the heating power rises. The output signal from the bridge circuit is supplied to a comparator and the output signal of the comparator resets the flip-flop circuit, which outputs a pulse-shaped signal representing the airflow quantity as a length of time. This pulse-shaped time signal is sent via a constant current circuit to another comparator, where it is compared with a reference voltage and the output signal from the comparator is supplied together with the above time signal to an exclusive OR circuit. This exclusive OR circuit outputs a first and second pulse signal as the measurement output signal Tout synchronously with the rise and fall of the time signal and this signal is supplied to the engine control unit.
摘要翻译： 在发动机的进气管中设置有加热器，其包括其电阻随温度变化而变化的元件和温度元件。 该加热器和温度元件与电阻器一起形成桥式电路，通过晶体管供应加热功率。 发动机控制单元在发动机旋转的同时产生起始信号Tin。 触发器电路由这些启动信号设定，当置位时，晶体管导通，加热功率上升。 来自桥接电路的输出信号被提供给比较器，并且比较器的输出信号复位触发器电路，其将表示气流量的脉冲信号输出为时间长度。 该脉冲形时间信号通过恒流电路发送到另一个比较器，在此与比较器进行比较，将来自比较器的输出信号与上述时间信号一起提供给异或电路。 该异或电路输出作为测量输出信号Tout的第一和第二脉冲信号与时间信号的上升和下降同步，并将该信号提供给发动机控制单元。
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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
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。
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公开(公告)号：US4669306A
公开(公告)日：1987-06-02
申请号：US743492
申请日：1985-06-11
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。
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6.发明授权Apparatus for measuring the quantity of airflow passing through an intake passage of an engine 失效用于测量通过发动机的进气通道的气流量的装置
公开(公告)号：US4565091A
公开(公告)日：1986-01-21
申请号：US723894
申请日：1985-04-16
申请人： Katsunori Ito , Susumu Akiyama , Tiaki Mizuno , Toshitaka Yamada , Tomoaki Abe
发明人： Katsunori Ito , Susumu Akiyama , Tiaki Mizuno , Toshitaka Yamada , Tomoaki Abe
CPC分类号： G01F1/6986 , F02D41/187 , G01F1/68 , G01F1/6983
摘要： Disposed in an intake pipe of an engine is a temperature-sensitive element formed of a resistance element whose resistance value varies with temperature. A heating current is supplied to the temperature-sensitive element through a transistor. The voltage of the heating current is set by a constant-voltage circuit. The temperature of the temperature-sensitive element is compared with a reference temperature of an auxiliary temperature-sensitive element. When the temperature of the temperature-sensitive element is increased to a predetermined level, an output signal is delivered from a comparator. A flip-flop circuit is reset by the output signal from the comparator, and is set by a start pulse signal. When the flip-flop circuit is set, the transistor is turned on, allowing the heating current to be supplied to the temperature-sensitive element. A burning-off instruction signal is supplied to a monostable multivibrator, and a signal with a duration suited for the burning-off operation is delivered from an AND circuit. In response to the output signal from the AND circuit, the flip-flop circuit is held set, and a reference voltage supplied to the differential amplifier is changed to a low level.
摘要翻译： 在发动机的进气管中设置的是由电阻值随温度变化的电阻元件形成的感温元件。 通过晶体管将加热电流提供给感温元件。 加热电流的电压由恒压电路设定。 将温度敏感元件的温度与辅助温度敏感元件的参考温度进行比较。 当温度敏感元件的温度升高到预定电平时，输出信号从比较器输出。 触发器电路由比较器的输出信号复位，并由起始脉冲信号设定。 当触发器电路被置位时，晶体管导通，允许加热电流被提供给温度敏感元件。 烧断指令信号被提供给单稳态多谐振荡器，并且具有适合于断电操作的持续时间的信号从AND电路传送。 响应于AND电路的输出信号，触发器电路被保持置位，并且提供给差分放大器的参考电压变为低电平。
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公开(公告)号：US4596138A
公开(公告)日：1986-06-24
申请号：US721182
申请日：1985-04-08
申请人： Katsunori Ito , Susumu Akiyama , Tiaki Mizuno , Toshitaka Yamada , Tomoaki Abe
发明人： Katsunori Ito , Susumu Akiyama , Tiaki Mizuno , Toshitaka Yamada , Tomoaki Abe
CPC分类号： G01F1/6986 , F02D41/187 , G01F1/6983
摘要： The intake airflow rate supplied to an internal combustion engine is measured and an obtained airflow rate measurement signal is used for detecting the operating state of the internal combustion engine. The internal combustion engine is electronically controlled, and an airflow rate measuring unit includes a heat-generating element having a temperature-resistance characteristic. A heating current which rises in correspondence with a signal synchronous with rotation of the engine is supplied to the heat-generating element. The heating current is controlled to rise when the heat-generating element is heated to a predetermined temperature, and the heating current duration indicates the airflow rate measurement signal. A burn-off command signal is generated so as to burn off dust attached to the heat-generating element. The command signal is used to generate a periodic signal having a preset effective duration. The pulse signal sets a continuous supply of the heating current to the element for the pulse duration, so that the heat-generating element is heated to a temperature for burning off dust attached thereto.
摘要翻译： 测量供应到内燃机的进气流量，并且使用获得的气流速率测量信号来检测内燃机的运行状态。 内燃机是电子控制的，气流量测量单元包括具有耐温特性的发热元件。 对应于与发动机的旋转同步的信号上升的加热电流被供应到发热元件。 当发热元件被加热到预定温度时，加热电流被控制上升，加热电流持续时间指示气流速度测量信号。 产生燃烧命令信号，以便燃烧附着在发热元件上的灰尘。 命令信号用于产生具有预设有效持续时间的周期信号。 脉冲信号使脉冲持续时间内的元件的加热电流连续供给，从而将发热元件加热至附着于其上的灰尘的温度。
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公开(公告)号：US4967597A
公开(公告)日：1990-11-06
申请号：US336381
申请日：1989-04-11
申请人： Toshitaka Yamada , Tiaki Mizuno , Masahito Imai , Haruyuki Ikeo , Hirohito Sioya , Masahito Muto , Motomi Iyoda
发明人： Toshitaka Yamada , Tiaki Mizuno , Masahito Imai , Haruyuki Ikeo , Hirohito Sioya , Masahito Muto , Motomi Iyoda
IPC分类号： G01P1/00
CPC分类号： G01P1/003
摘要： When an acceleration sensor is used, it is attached to a measured object to detect an acceleration applied to the object. The acceleration sensor includes a package having at least one chamber. A sensor element is disposed in the chamber and has a portion which vibrates in response to the acceleration. Damping liquid is sealed within the package and has a quantity which allows the sensor element to be submerged in the damping liquid and which allows a predetermined quantity of gas to remain in the package. The gas absorbs a thermally-induced volume change of the damping liquid. In the absence of the acceleration, a gas bubble is prevented from separating from the gas. In addition, the gas bubble is prevented from staying in the chamber.
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9.发明授权
公开(公告)号：US4624234A
公开(公告)日：1986-11-25
申请号：US713681
申请日：1985-03-20
CPC分类号： F02P15/008 , F02P1/086 , F02P11/00 , F02P11/02 , F02P5/1506 , Y02T10/46
摘要： An ignition timing adjusting system for an internal combustion engine wherein the output of a magneto-type generator driven by the engine is used as a power source to generate a constant voltage output through a voltage regulator circuit, and a rotational angular position of the engine is detected by a sensor and the corresponding output signal being used as a reference signal in order to electronically determine an ignition timing by an advance angle computing circuit energized by the constant voltage output of the voltage regulator circuit, and further detecting the constant voltage output of the regulator circuit, and an advance angle adjusting circuit cancels the computed output from the advance angle adjusting circuit when the detected voltage is less than a voltage which is an absolute minimum voltage necessary for the accurate ignition timing operation, whereby when the detected constant voltage output is not adequately regulated the computed output of the advance angle adjusting circuit causing the excessively advanced ignition timing is ignored, instead, forcibly timing the ignition to occur at the low-speed fixed angular position.
摘要翻译： 一种用于内燃机的点火正时调整系统，其中由发动机驱动的磁致发电机的输出用作电源，以通过电压调节器电路产生恒定电压输出，并且发动机的旋转角位置为 由传感器检测，相应的输出信号用作参考信号，以便通过由稳压器电路的恒定电压输出激励的提前角计算电路电子地确定点火正时，并进一步检测 调节器电路和提前角度调整电路当检测电压小于作为精确点火正时动作所需的绝对最小电压的电压时，抵消来自提前角调整电路的计算输出，由此当检测到的恒定电压输出为 没有充分调节提前角调整的计算输出 导致引起过高点火正时的g电路被忽略，而是强制地将点火定时发生在低速固定角位置。
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公开(公告)号：US4829822A
公开(公告)日：1989-05-16
申请号：US98050
申请日：1987-09-17
申请人： Masahito Imai , Toshitaka Yamada , Tiaki Mizuno , Hirohito Shioya
发明人： Masahito Imai , Toshitaka Yamada , Tiaki Mizuno , Hirohito Shioya
CPC分类号： G01P15/0802 , G01P1/003 , G01P15/123 , G01P2015/0828
摘要： A semiconductor accelerometer includes a package containing damping liquid. A base is fixedly disposed within the package. A semiconductor plate is disposed within the package and is supported on the base. The semiconductor plate has a movable free end and a deformable diaphragm. A semiconductor strain gauge is associated with the diaphragm and deforms in accordance with deformation of the diaphragm. The base has a first surface opposing the semiconductor plate free end. The first surface of the base has a recess for limiting movement of the semiconductor plate free end. The recess extends to and opens at a second surface of the base which differs from the first surface.
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