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71. 发明专利

JPS6293485A COMBUSTION LIGHT AIR-FUEL RATIO SENSOR 失效
公开(公告)号：JPS6293485A
公开(公告)日：1987-04-28
申请号：JP23121085
申请日：1985-10-18
申请人： HITACHI LTD
发明人： KUROIWA HIROSHI , OOYAMA TAKASHIGE
IPC分类号： G01N21/71 , F02D41/14 , F02D45/00 , F02P13/00 , F02P17/12 , G01J1/42 , G01M15/04
摘要： PURPOSE:To enable the air-fuel ratio of high accuracy to be detected even in a case that the detection surface of flame light is stained and the transmitted quantity of light is small, by detecting the emission strength of the radical ingredients of the combustion gas of visible radiation range with both light receiving elements, and calculating the air-fuel ratio by these output signal ratios. CONSTITUTION:Combustion flame light introduced from the detection end 3 of the combustion flame light is conducted to an optical fiber cable 4, and is forked therefrom to be conducted to two light catching sensors 5, 6 which are different each other in the emission strength of the CH radical of combustion gas or a spectral sensitivity characteristic. The light receiving elements 5, 6 are connected to a driving process circuit 7 to carry out photoelectric transferring therein, and the signals are conducted to a controller 8 which consists of a microprocessor. In the controller 8, the signals from the driving process circuit 7 are calculated and processed, and the information of an air-fuel ratio is obtained. When the air-fuel ratio is rich, the combustion light is reddish and its wave length is big, and when the air-fuel ratio is lean, the combustion light becomes bluish and its wave length becomes small. Thereby, which wave length ranges of flame become many can be discriminated by taking the ratio of the output signals, so that the judgement of the air-fuel ratio can be obtained.

72. 发明专利

JPS6238853A INTELLIGENT ENGINE CONTROLLER 失效
公开(公告)号：JPS6238853A
公开(公告)日：1987-02-19
申请号：JP17754685
申请日：1985-08-14
申请人： HITACHI LTD
发明人： KUROIWA HIROSHI , OOYAMA TAKASHIGE
IPC分类号： F02D45/00 , F02D41/00 , F02D41/14 , F02P5/15
摘要： PURPOSE:To always permit the control with high precision by renewing the map in which the control values corresponding to the aimed air-fuel ratio and the aimed ignition timing which are previously set, with the optimum control values obtained from the engine combustion pressure, engine roughness, etc. CONSTITUTION:The correction value for the set value for an engine control object is memorized in correspondence with the engine operation state by a controller 112 according to the outputs of a variety of operation-state detecting sensors (pressure sensor 115, opening-degree sensor 118, etc.), and the memory values are renewed in accordance with the state of the engine control factors. When the control factor is air-fuel ratio, each engine roughness is detected by a combustion pressure sensor 132, etc. in lean region and starting warming region, and the air-fuel ratio is controlled so as to be put into a prescribed roughness value, and a map of the control value is renewed. As for the ignition timing, ignition timing is controlled according to the difference between the actual value and the set value of the ignition timing, and the optimum control value is used for the renewal of the map.

73. 发明专利

JPS6157456B2 失效
公开(公告)号：JPS6157456B2
公开(公告)日：1986-12-06
申请号：JP4913579
申请日：1979-04-23
申请人： HITACHI LTD
发明人： OOYAMA TAKASHIGE , KUROIWA HIROSHI
IPC分类号： F02D41/34 , F02D3/00 , F02D35/00 , F02D41/18 , F02M7/12 , F02M69/00

74. 发明专利

JPS61234271A FLAME LIGHT DETECTING DEVICE 失效
公开(公告)号：JPS61234271A
公开(公告)日：1986-10-18
申请号：JP7428085
申请日：1985-04-10
申请人： HITACHI LTD
发明人： KUROIWA HIROSHI , OOYAMA TAKASHIGE
IPC分类号： G01J1/42 , F02D45/00 , F02P5/145 , F02P5/15 , F02P15/00 , F23N5/08
摘要： PURPOSE:To improve detecting sensitivity of a flame light detector, by a method wherein, in an operation region in that dust is adhered to a flame light detecting surface, the input of a signal from the flame light detector is shut off to shift a closed loop control to an open loop control. CONSTITUTION:A signal from a flame light detector 16 is inputted to a photoelectric converter 18 through an optical fiber 17, where it is converted into an electric signal which is processed by a signal processing circuit 20 through a switching circuit 19 and is inputted to a controller 21. A signal from an engine operating condition parameter detector 22 is inputted to the controller 21 to output a control signal. In which case, in a region, where dust is adhered to the detecting surface of the flame photo detector 16, the input of a flame photo signal to the controller 21 is shut off, and a closed loop control mode is released by means of the flame light signal to perform an open loop control. This prevents lowering of performance of detecting a flame light thanks to dust adhered to the flame light detector 16, resulting in high precise control of an ignition time.

75. 发明专利

JPS61160577A COMBUSTION FLAME DETECTOR 失效
公开(公告)号：JPS61160577A
公开(公告)日：1986-07-21
申请号：JP21085
申请日：1985-01-07
申请人： HITACHI LTD
发明人： KUROIWA HIROSHI , OOYAMA TAKASHIGE
IPC分类号： G01J1/42 , F02P17/12
摘要： PURPOSE:To detect a degree of dirt in a flame light detector, by detecting discharge spark light and combustion flame light in a selective manner, while setting a discharge spark at the latter half period of an exhaust stroke down to the reference light. CONSTITUTION:A light signal being detected by a flame light detector 19 is led into a light brancher 22 and branched off in two parts by an optical fiber 21. And, the branched light signal is converted into an electric signal by photoelectric transducers 23 and 24 and lead into an overall control circuit 25. In addition, a crank angle signal out of a crank angle sensor 26 and various parameter signals out of an engine parameter detector 27 are led into the control circuit 25, and on the basis of this determination, spark discharge at a spark plug 20 is carried out by an electronic ignition device 28. Here, each spectral- response characteristic of these photoelectric transducers 23 and 24 is altered. With this constitution, a signal for only combustion flame light and only a signal for discharge spark light at the latter half period of an exhaust stroke are detectable each. And, making the said discharge spark a criterion, compensation takes place for the detected signal of combustion flame light, making it turn to the signal level that corrected a degree of dirt on a detection surface.

76. 发明专利

JPS6141919A Hot wire type flow meter 失效
标题翻译：热线型流量计
公开(公告)号：JPS6141919A
公开(公告)日：1986-02-28
申请号：JP16292584
申请日：1984-08-03
申请人： Hitachi Ltd
发明人： KUROIWA HIROSHI , OOYAMA TAKASHIGE
IPC分类号： G01F1/00 , G01F1/68 , G01F1/698
CPC分类号： G01F1/68
摘要： PURPOSE:To constitute the inexpensive hot wire type flow meter which measures a flow rate at plural points by providing resistors for flow velocity detection as sensors at respective measurement points and sharing a processing means such as the Wheatstone bridge of a resistor for temperature compensation. CONSTITUTION:Resistors 18 and 19 for flow rate detection are provided in a flow passage at two positions where a measurement is taken. The resistor for temperature compensation, on the other hand, is provided at either point because of nearly the same atmosphere. Then, the resistors 18 and 19 for flow velocity detection are connected to one side of the Wheatstone bridge in parallel and the resistor 13 for temperature compensation is connected to the other side. Further, supply currents to the resistors 18 and 19 are adjusted through a differential amplifier 14, transistor (TR)15, etc., so that the potential difference at the middle point of the bridge is 0, and the current at this time is used as a flow speed signal of gas. Further, the temperature is detected by the resistor 13 to correct a fed current. Further, a zero-span circuit 17 which detects a flow velocity on time-division basis and extracts a heating current, etc., are shared. Thus, a detection part is provided at every measurement point and a driving means is shared, so the device is constituted at low cost.
摘要翻译：目的：构成廉价的热线式流量计，其通过在各测量点设置流速检测电阻器作为传感器来测量多点流量，并共享诸如用于温度补偿的电阻器的惠斯登电桥等处理装置。构成：用于流量检测的电阻器18和19在进行测量的两个位置的流路中提供。另一方面，温度补偿电阻由于几乎相同的气氛在任一点提供。然后，用于流速检测的电阻器18和19并联连接在惠斯通电桥的一侧，用于温度补偿的电阻器13连接到另一侧。此外，通过差分放大器14，晶体管（TR）15等调整到电阻器18和19的电流，使得桥的中点处的电位差为0，并且使用此时的电流作为气体的流速信号。此外，由电阻器13检测温度以校正馈电电流。此外，共享检测时间分辨率的流速并提取加热电流等的零跨度电路17。因此，在每个测量点设置检测部分，并且驱动装置被共享，因此该装置以低成本构成。

77. 发明专利

JPS5970853A Controller for car engine 失效
标题翻译：汽车发动机控制器
公开(公告)号：JPS5970853A
公开(公告)日：1984-04-21
申请号：JP18128382
申请日：1982-10-18
申请人： Hitachi Ltd
发明人： KUROIWA HIROSHI , OOYAMA TAKASHIGE
IPC分类号： F02D41/02 , F02D21/10 , F02D31/00 , F02D33/00 , F02D35/00 , F02D41/04 , F02D41/14 , F02D41/18 , F02M23/04
CPC分类号： F02D41/1475 , F02D31/002 , F02D35/003 , F02D41/18
摘要： PURPOSE: To prevent the generated torque from reducing in accordance with the amount of operation of a driver even in thin mixed-gas operation by determining the fuel to be supplied in accordance with the throttle opening degree and executing mixed-gas control for improving fuel efficiency.
CONSTITUTION: In a main passage 16 on the upstream side from an intake pipe 14 connected to the combustion chamber of an engine 12, a throttle valve 18 is connected, and an air flow meter 20 is arranged, and air is supplied into the main passage from an air cleaner 22 arranged on the upstream side. A bypass valve 34 in a bypass passage 32 is controlled by a pulse motor 36. Into a microcomputer 50, an air-amount signal QA detected by the air flow meter 20, engine revolution speed N, and the opening degree signal θTH of the throttle valve 18 are stored, and calculation processing is performed on the basis of these signals, and the opening and closing signals for the bypass valve 34 and the control signal for a fuel injection valve 40 are determined, and then transmitted. Since the torque corresponding to the amount of operation of a driver is generated even in a thin mixed-gas operation range, easy driving is permitted.
COPYRIGHT: (C)1984,JPO&Japio
摘要翻译：目的：通过根据节气门开度确定要供应的燃料，并且执行用于提高燃料效率的混合气体控制，以防止产生的转矩根据驾驶员的操作量而在薄混合气体操作中减少。构成：在从与发动机12的燃烧室连接的进气管14的上游侧的主通路16中连接有节流阀18，配置有空气流量计20，空气被供给到主通路来自布置在上游侧的空气滤清器22。旁路通路32中的旁通阀34由脉冲电机36控制。在微型计算机50中，由空气流量计20检测到的空气量信号QA，发动机转速N以及节流阀的开度信号θTH 阀18被存储，并且基于这些信号进行计算处理，并且确定旁通阀34的打开和关闭信号以及燃料喷射阀40的控制信号，然后发送。由于即使在薄的混合气体运行范围内也产生与驱动器的运转量相对应的转矩，因此容易驾驶。

78. 发明专利

JPS58202359A Fuel control device 失效
标题翻译：燃油控制装置
公开(公告)号：JPS58202359A
公开(公告)日：1983-11-25
申请号：JP8631082
申请日：1982-05-20
申请人： Hitachi Ltd
发明人： KUROIWA HIROSHI , OOYAMA TAKASHIGE
IPC分类号： F02D3/00 , F02M51/02
CPC分类号： F02M51/02
摘要： PURPOSE:To eliminate a measurement error in a fuel control unit in which air qantity is measured by means of a hot wire sensor placed in a by-pass air passage, by installing a pressure change buffering means up-stream from the hot wire sensor. CONSTITUTION:A hot wire sensor 6 is installed in a by-pass air passage 5. An air needle valve 18 is controlled by the output from the sensor 6 so that the air quantity passing through the air passage 5 is kept constant. Meanwhile, the amount of fuel is controlled by a fuel needle valve, thus, the air-fuel ratio is kept constant. A pressure buffering means like a surge tank 30 is installed up- stream from the hot wire sensor 6. As a result, an measurement error due to a ''blow-back'' phenomenon during the engine high load operation can be eliminated.
摘要翻译：目的：通过放置在旁路空气通道中的热线传感器，通过从热线传感器向上安装压力变化缓冲装置来消除在其中测量空气量的燃料控制单元中的测量误差。构成：热线传感器6安装在旁通空气通路5中。空气针阀18由传感器6的输出控制，使得通过空气通道5的空气量保持恒定。同时，由燃料针阀控制燃料量，因此空燃比保持恒定。在热线传感器6上方设置有像缓冲罐30的压力缓冲装置。结果，可以消除在发动机高负载运转期间由于“回吹”现象引起的测量误差。

79. 发明专利

JPS58138258A FUEL SUPPLY DEVICE 失效
公开(公告)号：JPS58138258A
公开(公告)日：1983-08-17
申请号：JP2026782
申请日：1982-02-10
申请人： HITACHI LTD
发明人： NISHIMURA YUTAKA , KUROIWA HIROSHI , OOYAMA TAKASHIGE , TERANISHI TAKAO
IPC分类号： F02D41/34 , F02B75/02 , F02M51/02 , F02M69/18 , F02M69/32 , F02M69/48 , G01F1/684 , G01F1/72 , G01F5/00
摘要： PURPOSE:To hold the air-to-fuel ratio at a proper rate by installing a counterflow preventive member in a by-pass air passage and by preventing malfunction of the airflow meter owing to counterflow. CONSTITUTION:The upper flow of a venturi part 4 and the narrowest part of the same 4 are in communication through a by-pass air passage 5, and a heat radiation flowmeter 6 is installed on its midway. The output of this flowmeter 6 operates a proportional solenoid valve 23 with the aid of a computer 9 so that the rate of air flow will become constant. Pulsation and counterflow of the intake air stream generated when the engine is full open for low speed operation permits the flowmeter 6 to output a signal as a large rate of air flow and, thus, a rich mixture gas is supplied to the engine, and therefore a cylindrical convolution chamber 30 is provided in order to prevent it. Accordingly a counterflow flows in the convolution chamber 30 in its tangential direction, so that a large fluid resistance is produced to hinder generation of counterflow in the by-pass air passage 5.

80. 发明专利

JPS57193762A FUEL CONTROLLER 失效
公开(公告)号：JPS57193762A
公开(公告)日：1982-11-29
申请号：JP7819881
申请日：1981-05-22
申请人： HITACHI LTD
发明人： KASHIWATANI MINEO , TANABE YOSHIYUKI , YAMADA KINSAKU , OOYAMA NOBUSHIGE , KUROIWA HIROSHI , TSURUTA NAOTO
IPC分类号： F02D41/34 , F02D3/00 , F02M69/00 , F02M69/46
摘要： PURPOSE:To promote pulverization of fuel at full open low speed operation of an engine, by providing an auxiliary valve, having a notch, in the upstream of a throttle valve. CONSTITUTION:An auxiliary valve 28 is provided in the upstream of a throttle valve 14, and a small Venturi 30A is arranged to a notch 28A of said auxiliary valve 28, further fuel is fed to this small Venturi 30A. At full open low speed operation of an engine, such as upgrade running operation, when the throttle valve 14 is fully opened further with low speed, a flow of air decreases to displace the auxiliary valve 28 to the direction of being closed. In consequence, a flow speed of air, passing through the small Venturi 30A, is increased to promote pulverization of fuel.

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