公开(公告)号：US4475388A

公开(公告)日：1984-10-09

申请号：US433411

申请日：1982-10-07

申请人： Hisasi Kawai ,  Norihito Tokura ,  Tokio Kohama ,  Kenji Kanehara ,  Takayoshi Ito ,  Kazutaka Hasegawa

发明人： Hisasi Kawai ,  Norihito Tokura ,  Tokio Kohama ,  Kenji Kanehara ,  Takayoshi Ito ,  Kazutaka Hasegawa

IPC分类号： G01F1/68 ,  G01F1/696 ,  G01F1/698 ,  G01F15/04 ,  G01P5/12

CPC分类号： G01F1/698 ,  G01F1/696

摘要： A method for measuring the flow rate of fluid such as liquified petroleum gas fuel for an automobile fuel. A signal of the fluid flow rate and a signal of the fluid temperature are produced by using the signals from an electric heater and a first, second, and third temperature-dependent resistors in a signal processing circuit. The produced signals are supplied to a computer circuit to carry out modification, linearization, and multiplication by a conversion constant for linearization which is corrected regarding temperature characteristic. The result of calculation in the computer circuit is displayed on a display device.

摘要翻译： 一种用于测量汽车燃料液化石油气燃料的流体流量的方法。 通过使用来自电加热器的信号和信号处理电路中的第一，第二和第三温度依赖电阻器来产生流体流速的信号和流体温度的信号。 所产生的信号被提供给计算机电路，以通过针对温度特性校正的线性化的转换常数进行修改，线性化和乘法。 计算机电路中的计算结果显示在显示装置上。

公开(公告)号：US4550308A

公开(公告)日：1985-10-29

申请号：US486840

申请日：1983-04-20

申请人： Norihito Tokura ,  Hisasi Kawai ,  Tokio Kohama ,  Kenji Kanehara

发明人： Norihito Tokura ,  Hisasi Kawai ,  Tokio Kohama ,  Kenji Kanehara

IPC分类号： H03M1/52 ,  H03K7/08 ,  H03M1/00 ,  H03K13/20

CPC分类号： H03K7/08 ,  H03M1/504

摘要： A signal converting apparatus for converting voltage into a pulse signal with a corresponding pulse-width comprises a switching circuit for selecting either one of an input voltage to be converted or a constant voltage depending upon a binary switching signal. The selected voltage is integrated with respect to time by an integrating circuit. When the output from the integrating circuit has reached an upper limit voltage or a lower limit voltage, the above-mentioned binary switching signal which is an output signal of this signal converting apparatus is inverted by a comparator/inverter circuit.

摘要翻译： 用于将电压转换成具有相应脉冲宽度的脉冲信号的信号转换装置包括用于根据二进制切换信号选择要转换的输入电压或恒定电压中的任一个的开关电路。 所选择的电压通过积分电路相对于时间积分。 当积分电路的输出达到上限电压或下限电压时，作为该信号转换装置的输出信号的上述二进制开关信号由比较器/反相器电路反相。

公开(公告)号：US4537172A

公开(公告)日：1985-08-27

申请号：US544416

申请日：1983-10-21

申请人： Kenji Kanehara ,  Tokio Kohama ,  Hisasi Kawai ,  Norihito Tokura

发明人： Kenji Kanehara ,  Tokio Kohama ,  Hisasi Kawai ,  Norihito Tokura

IPC分类号： F02M21/02 ,  F02D19/02 ,  F02D41/14 ,  F02D41/18 ,  G01F1/68 ,  G01F1/696 ,  G01F1/698 ,  F02M21/04

CPC分类号： G01F1/698 ,  F02D19/023 ,  F02D19/027 ,  F02D41/14 ,  F02D41/187 ,  G01F1/68 ,  G01F1/696 ,  F02M21/0206 ,  F02M21/0212 ,  Y02T10/32

摘要： In a fuel supply control apparatus for an internal-combustion engine, liquid fuel is vaporized and is supplied to a fuel gas passage leading to an intake air passage. The flow rate of the vaporized fuel flowing through the fuel gas passage is detected, and the flow rate of the fuel is calculated in accordance with the load of the engine. As a result, feedback control of the fuel to be supplied to the engine is carried out so that the detected flow rate of the vaporized fuel is close to the calculated flow rate of the fuel.

摘要翻译： 在用于内燃机的燃料供给控制装置中，液体燃料蒸发并被供给到通向进气通道的燃料气体通道。 检测流过燃料气体通道的汽化燃料的流量，并根据发动机的负荷来计算燃料的流量。 结果，进行向发动机供给的燃料的反馈控制，使得所检测到的汽化燃料的流量接近计算出的燃料流量。

公开(公告)号：US4587843A

公开(公告)日：1986-05-13

申请号：US622554

申请日：1984-06-20

申请人： Norihito Tokura ,  Hisasi Kawai ,  Kenji Kanehara ,  Tokio Kohama

发明人： Norihito Tokura ,  Hisasi Kawai ,  Kenji Kanehara ,  Tokio Kohama

IPC分类号： G01F1/68 ,  G01F1/684 ,  G01F1/688 ,  G01F1/692 ,  G01F1/698

CPC分类号： G01F1/6845 ,  G01F1/6888 ,  G01F1/698

摘要： A gas-flow measuring apparatus including a plurality of thermocouples formed in series on a substrate. Every other thermojunction of the thermocouples is located upstream of an electric heater, while the remaining thermojunctions of the thermocouples are located downstream of the electric heater.

摘要翻译： 一种气流测量装置，包括在基板上串联形成的多个热电偶。 热电偶的每个其他热电偶都位于电加热器的上游，而热电偶的其余热电偶位于电加热器的下游。

公开(公告)号：US4532798A

公开(公告)日：1985-08-06

申请号：US615910

申请日：1984-05-31

申请人： Tokio Kohama ,  Hideki Obayashi ,  Hisasi Kawai ,  Toshikazu Ina ,  Takashi Shigematsu ,  Setsuo Tokoro

发明人： Tokio Kohama ,  Hideki Obayashi ,  Hisasi Kawai ,  Toshikazu Ina ,  Takashi Shigematsu ,  Setsuo Tokoro

IPC分类号： G01M15/04 ,  G01M15/08 ,  G01M15/00

CPC分类号： G01M15/046 ,  G01M15/08 ,  F02D2200/1015

摘要： In a method for measuring variations in the output of an internal combustion engine, at least one of signals respectively representing an engine speed, torque, and internal cylinder pressure of the internal combustion engine during the firing strokes of the engine is obtained. A periodical and pulsating change in the obtained signal is detected. A differential value at a portion of the change of the signal having a maximum gradient is then detected. Another method provides measuring variations in the output of the internal combustion engine by calculating the difference between the maximum and minimum values of the change of the obtained signal. Still another method provides measuring variations in the output of the internal combustion engine by correcting the obtained value in accordance with the engine speed. Still another method provides measuring variations in the output of the internal combustion engine by calculating the difference between consecutive changes.

摘要翻译： 在一种用于测量内燃机的输出变化的方法中，获得分别代表发动机的点火行程期间内燃机的发动机转速，转矩和内汽缸压力的信号中的至少一个。 检测到所获得的信号中的周期性和脉动变化。 然后检测具有最大梯度的信号的变化的一部分的差分值。 另一种方法通过计算获得的信号的变化的最大值和最小值之间的差异来提供内燃机输出的测量变化。 另一种方法通过根据发动机转速校正获得的值来提供内燃机的输出的测量变化。 另一种方法通过计算连续变化之间的差异来提供内燃机输出的测量变化。

公开(公告)号：US4503713A

公开(公告)日：1985-03-12

申请号：US486832

申请日：1983-04-20

申请人： Hideki Obayashi ,  Tokio Kohama ,  Kimitaka Saito ,  Hisasi Kawai ,  Toshikazu Ina

发明人： Hideki Obayashi ,  Tokio Kohama ,  Kimitaka Saito ,  Hisasi Kawai ,  Toshikazu Ina

IPC分类号： G01L3/10 ,  G01L3/14 ,  G01L3/02

CPC分类号： G01L3/1407 ,  G01L3/109

摘要： A torque detector, particularly a torque detector for detecting a torque applied to a torque transmission shaft which is connected to a load such as a wheel of an automobile, comprises a first shaft connected to a driving shaft, a second shaft connected to a torque transmission shaft, and a plurality of elastic members, each of which is interposed between the first shaft and the second shaft for transmitting the torque of the first shaft to the second shaft while receiving the compression force between the first shaft and the second shaft when the driving shaft is driven. The first shaft comprises a flange portion wherein a plurality of long grooves are formed so as to extend in the rotating direction thereof. The second shaft comprises a flange portion wherein a plurality of long holes are formed so as to extend in the rotating direction thereof and penetrate therethrough at such positions as to be substantially opposed to said long grooves. Each of the elastic members is accommodated within each of the long holes. The projecting side portion of each of the elastic members is accommodated within each of the long grooves. The long holes are grouped into two kinds of long holes having different lengths in the rotating direction of the second shaft. One kind of long holes have a length equal to that of the long groove of the first shaft while the other kind of long holes have a length longer than that of one kind of long holes by a predetermined angular distance. Until the applied torque reaches a predetermined value, the first shaft is connected to the second shaft only through one kind of elastic members to decrease the total spring constant thereof and when the applied torque exceeds the predetermined value, the first shaft is connected to the second shaft through all of the elastic members to increase the total spring constant thereof. The torque detector further comprises a data processor by which the angular phase difference between the first shaft and the second shaft, which occurs due to the compression of the elastic members is detected and torque is calculated from the detected angular phase difference.

公开(公告)号：US4425792A

公开(公告)日：1984-01-17

申请号：US376133

申请日：1982-05-07

申请人： Tokio Kohama ,  Hideki Obayashi ,  Hisasi Kawai ,  Tsuneyuki Egami

发明人： Tokio Kohama ,  Hideki Obayashi ,  Hisasi Kawai ,  Tsuneyuki Egami

IPC分类号： G01F1/69 ,  G01F1/68

CPC分类号： G01F1/69

摘要： In a fluid flow rate measuring apparatus having a sensor including an electric heater resistance wire and first and second temperature dependent resistance wires and a measuring circuit, each of the resistance wires is wound to be held firmly in place on a supporting member made of an electrical insulating material, and the electric heater resistance wire and the first temperature dependent resistance wire, which is responsive to the temperature of the fluid under measurement heated by the electric heater resistance wire, are wound on the same supporting member alternately and close to each other so that the winding direction thereof makes an angle from 60.degree. to 120.degree. to the direction of the flow of the fluid under measurement. Further, each of the supporting members is constructed and arranged so as to minimize the influence of the heat capacity thereof and also to avoid the occurrence of turbulence in the flow of the fluid which is detrimental to the flow rate measurement. This construction can provide a fluid flow rate measuring apparatus having high precision, improved response and elevated reliability.

摘要翻译： 在具有包括电加热器电阻丝和第一和第二温度依赖性电阻丝的传感器和测量电路的流体流量测量装置中，每个电阻线被卷绕以牢固地保持在由电气制成的支撑部件上的适当位置 绝缘材料和电加热器电阻丝和第一温度依赖性电阻丝，其响应于由电加热器电阻丝加热的被测量流体的温度，彼此交替地彼此缠绕在相同的支撑件上，所以 其卷绕方向与被测流体的流动方向成60°到120°的角度。 此外，每个支撑构件被构造和布置成使得其热容的影响最小化，并且还避免了流体流动中的湍流的发生，这对流量测量是不利的。 该结构可以提供具有高精度，改进的响应和提高的可靠性的流体流量测量装置。

公开(公告)号：US4257382A

公开(公告)日：1981-03-24

申请号：US85319

申请日：1979-10-16

申请人： Takeshi Matsui ,  Tokio Kohama ,  Hisasi Kawai ,  Akira Nishimatsu ,  Toshikazu Ina ,  Hidetaka Nohira ,  Kiyoshi Kobashi

发明人： Takeshi Matsui ,  Tokio Kohama ,  Hisasi Kawai ,  Akira Nishimatsu ,  Toshikazu Ina ,  Hidetaka Nohira ,  Kiyoshi Kobashi

IPC分类号： F02D21/08 ,  F02D43/00 ,  F02M7/24 ,  F02M7/28 ,  F02M25/07 ,  F02B47/08

CPC分类号： F02D41/005 ,  F02M7/24 ,  Y02T10/47

摘要： In an exhaust gas recirculation system adapted to an internal combustion engine, the system comprises a servomotor to be operated by pneumatic pressure and a control valve actuated by the servomotor to control the quantity of exhaust gases recirculated into an intake manifold from an exhaust pipe. The pneumatic pressure applied to the servomotor is electrically controlled without undesired errors to satisfy the following function in relation to the engine intake manifold vacuum and the engine speed:Pe=f(Pv, N)where Pe is the pneumatic pressure applied to the servomotor, Pv and N respectively indicate the engine intake manifold vacuum and the engine speed.

摘要翻译： 在适于内燃机的废气再循环系统中，该系统包括由气动压力操作的伺服电动机和由伺服电机致动的控制阀，以控制从排气管道再循环到进气歧管中的废气量。 施加到伺服电动机的气压被电控制，没有不期望的误差，以满足关于发动机进气歧管真空和发动机转速的以下功能：Pe = f（Pv，N）其中Pe是施加到伺服电机的气动压力， Pv和N分别表示发动机进气歧管真空度和发动机转速。

公开(公告)号：US4200843A

公开(公告)日：1980-04-29

申请号：US865114

申请日：1977-12-28

申请人： Tsuneyuki Egami ,  Hisasi Kawai ,  Tokio Kohama ,  Hideki Obayashi

发明人： Tsuneyuki Egami ,  Hisasi Kawai ,  Tokio Kohama ,  Hideki Obayashi

IPC分类号： G06G7/28 ,  G06G7/30 ,  H03K17/00

CPC分类号： G06G7/30

摘要： A non-linear operational circuit with reference voltage sources and switching means, wherein the output voltage of the operational circuit is compared with the reference voltages to open and close the switching means in accordance with their magnitudes relative to one another and thereby to non-linearly vary the output voltage of the operational circuit in response to changes in the input voltage. The reference voltage sources and the switching means are connected in series between the output terminal and the ground terminal of the operational circuit, whereby at the inflection point at which the ratio of the change in the output voltage of the operational circuit to the change in the input voltage changes, the output voltage is caused to change continuously.

摘要翻译： 一种具有参考电压源和开关装置的非线性运行电路，其中将运算电路的输出电压与参考电压进行比较，以根据它们相对于彼此的幅度打开和闭合开关装置，从而非线性地 响应于输入电压的变化，改变操作电路的输出电压。 参考电压源和开关装置串联在操作电路的输出端子和接地端子之间，由此在操作电路的输出电压的变化比与其中的变化的拐点 输入电压变化，输出电压不断变化。

公开(公告)号：US4089214A

公开(公告)日：1978-05-16

申请号：US809041

申请日：1977-06-22

申请人： Tsuneyuki Egami ,  Hisasi Kawai ,  Tokio Kohama ,  Hideki Obayashi

发明人： Tsuneyuki Egami ,  Hisasi Kawai ,  Tokio Kohama ,  Hideki Obayashi

IPC分类号： F02D41/34 ,  F02D41/18 ,  F02D41/24 ,  G01F1/68 ,  G01F1/684 ,  G01F1/698 ,  G01M15/00

CPC分类号： F02D41/24 ,  F02D41/187 ,  G01F1/68 ,  G01F1/684 ,  G01F1/6986

摘要： An intake air amount detecting system includes a branch pipe disposed in the intake manifold of the engine and having two passages each provided therein with a temperature responsive resistor. One of the two passages is provided with an electric heater and a voltage is applied to the electric heater so that the temperature difference in the two passages measured by the two temperature responsive resistors is maintained at a predetermined value irrespective of the amount of air flow through the intake manifold. An A-D converter is further provided and includes a time constant circuit and a capacitor for producing across the capacitor a reference voltage which has a waveform representing a predetermined relationship between the voltage applied to the electric heater and the amount of intake air flow. The voltage actually applied to the heater is compared with the reference voltage at a voltage comparater in the A-D converter and the A-D converter produces a pulse signal having a time width corresponding to a period from the rise of the reference voltage until the reference voltage reaches the actual voltage, and hence corresponding to the amount of intake air flow.

摘要翻译： 进气量检测系统包括设置在发动机的进气歧管中的分支管，并且具有两个通道，每个通道中设置有温度响应电阻器。 两个通道中的一个设置有电加热器，并且向电加热器施加电压，使得由两个温度响应电阻器测量的两个通道中的温差保持在预定值，而不管空气流通量 进气歧管。 进一步提供A-D转换器，并且包括时间常数电路和用于在电容器两端产生参考电压的电容器，该参考电压具有表示施加到电加热器的电压与进气量之间的预定关系的波形。 将实际施加到加热器的电压与AD转换器中的电压比较器处的参考电压进行比较，并且AD转换器产生具有对应于从参考电压的升高直到参考电压达到的时间段的时间宽度的脉冲信号 实际电压，因此对应于进气流量。