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1. 发明专利

JP2002188498A ENGINE CONTROL DEVICE 失效
公开(公告)号：JP2002188498A
公开(公告)日：2002-07-05
申请号：JP2000381591
申请日：2000-12-15
申请人： HITACHI LTD , HITACHI CAR ENG CO LTD
发明人： NOZAWA KAZUNORI , KOYAMA KATSUYA , TOKUNAGA YOSHITAKA
IPC分类号： F02D45/00 , F02D41/20 , F02D41/34
摘要： PROBLEM TO BE SOLVED: To provide an engine control device, provided with an injector having double solenoid coils for valve opening and holding an opened valve and capable of stable fuel injection. SOLUTION: This engine control device controls to drive a fuel injection valve, having the coils for valve opening and holding the opened valve, and has a calculating means, a valve-opening coil-driving circuit for working out the signal for driving the opened valve-holding coils, and a signal compensation means. The calculating means outputs a valve-opening signal, and the compensation means compensates for the valve opening signal to output the compensated signal as that for controlling the valve opening coil to the valve opening coil- driving circuit.

2. 发明专利

JPH09273941A SENSOR STATE DISCRIMINATOR 失效
公开(公告)号：JPH09273941A
公开(公告)日：1997-10-21
申请号：JP8233396
申请日：1996-04-04
申请人： HITACHI LTD , HITACHI CAR ENG CO LTD
发明人： KATOUGI KOUZOU , SASAKI TOMOHARU , NOZAWA KAZUNORI , SUMIDA HIROSHI , YAMADA SHIGEKI
IPC分类号： G01D3/028 , G01M17/007
摘要： PROBLEM TO BE SOLVED: To detect even the shortcircuiting state of a sensor by limiting to a small current value at the time of normal sensor, and limiting to a large current vale if it arrives at the current value near the short-circuiting state. SOLUTION: An acceleration sensor 1 varies the resistance value in response to an acceleration so that a resistance value is several in a steady state and can detects the presence or absence of the acceleration when the acceleration becomes a predetermined value or more so that the resistance value becomes 0. In this case, heretofore, since the A-D converted value alters like that the resistance of the sensor 1 becomes small when a power source voltage drops, V is employed as a power source 2, and a current limiter 3 which operates as a constant current source is provided. A controller 3 limits to a small current value at the time of normal sensor and limits to a large current value in the case of near short-circuiting state or the case that the voltage to the sensor 1 becomes low. A sensor voltage detector 4 fetches the voltage to the sensor 1, A-D converts it by an A-D converter 5, and outputs it to a microcomputer. Thus, the short-circuiting state of the sensor 1 can be detected.

3. 发明专利

JPH0964764A WIRING METHOD FOR ELECTRONIC CONTROLLER 失效
公开(公告)号：JPH0964764A
公开(公告)日：1997-03-07
申请号：JP22140295
申请日：1995-08-30
申请人： HITACHI LTD , HITACHI CAR ENG CO LTD
发明人： YAMADA SHIGEKI , NAKAZURU KUNITO , NOZAWA KAZUNORI
IPC分类号： H01Q1/22 , H04B1/10
摘要： PROBLEM TO BE SOLVED: To prevent a high frequency component of noise from being injected to a high frequency receiver by separating a ground wiring for the high frequency receiver and a ground wiring for an arithmetic processing circuit including a CPU into different systems and subjecting them to arithmetic processing. SOLUTION: The controller has plural high frequency receivers 2 and a CPU 1 for arithmetic processing for digital signals outputted from the high frequency receivers 2, an I/O 3 providing an output of the result operated by the CPU 1 as a control signal, a ROM and a RAM storing a control program for arithmetic operation and constants for control program. Then the ground wiring is separated into two systems for the arithmetic processing and for the high frequency signals and the two systems of wires are connected together at a power supply section 9. Thus, the noise of the ground line for the high frequency circuit is reduced to be less than criterion and the effect of noise in the CPU 1 arithmetic processing system onto the high frequency circuit is avoided.

4. 发明专利

JP2003013782A Engine control device 审中-公开
标题翻译：发动机控制装置
公开(公告)号：JP2003013782A
公开(公告)日：2003-01-15
申请号：JP2001200502
申请日：2001-07-02
申请人： Hitachi Car Eng Co Ltd , Hitachi Ltd , 株式会社日立カーエンジニアリング , 株式会社日立製作所
发明人： TOKUNAGA YOSHITAKA , NOZAWA KAZUNORI , KAMIMURA YASUO
IPC分类号： F02M51/00 , F02D41/20 , F02M51/06 , F02M51/08
摘要： PROBLEM TO BE SOLVED: To provide an engine control device furnished with an injector having two solenoid coils for valve opening and opened valve holding capable of restraining an influence on an injection characteristic of the injector and restraining heating of an element to drive the solenoid valve for valve opening of low resistance.
SOLUTION: This engine control device to drive and control a fuel injection valve having the coil for valve opening and the coil for holding has a computing means, a coil driving circuit for valve opening to enumerate a signal to drive the coil for valve opening in accordance with an output signal from the computing means and a coil driving circuit for holding to enumerate a signal to drive the coil for holding, and the coil driving circuit for valve opening has a driving element to drive the coil for valve opening and has a voltage setting circuit to set voltage against the driving element not less than voltage of the computing means.
COPYRIGHT: (C)2003,JPO
摘要翻译：要解决的问题：提供一种具有喷射器的发动机控制装置，该喷射器具有用于阀打开的两个电磁线圈和能够抑制对喷射器的喷射特性的影响的开阀保持，并且限制元件的加热以驱动电磁阀阀门打开低电阻。解决方案：用于驱动和控制具有用于阀打开的线圈和用于保持的线圈的燃料喷射阀的发动机控制装置具有计算装置，用于阀打开的线圈驱动电路，以根据下述方式列举用于驱动用于阀打开的线圈的信号来自计算装置的输出信号和用于保持以枚举用于驱动线圈保持的信号的线圈驱动电路，并且用于阀打开的线圈驱动电路具有用于驱动线圈用于阀打开的驱动元件，并具有电压设定电路，用于相对驱动元件设定电压不小于计算装置的电压。

5. 发明专利

JP2003013781A Engine control device 有权
标题翻译：发动机控制装置
公开(公告)号：JP2003013781A
公开(公告)日：2003-01-15
申请号：JP2001200501
申请日：2001-07-02
申请人： Hitachi Car Eng Co Ltd , Hitachi Ltd , 株式会社日立カーエンジニアリング , 株式会社日立製作所
发明人： NOZAWA KAZUNORI , TOKUNAGA YOSHITAKA
IPC分类号： F02M51/00 , F02D41/20 , F02M51/06 , F02M51/08 , H01F7/18
摘要： PROBLEM TO BE SOLVED: To provide an engine control device, provided on each of cylinders of an engine and furnished with an injector having two solenoid coils for valve opening and holding, capable of constructing an inexpensive system by reduction of the number of output ports of a signal for valve opening output from a computing device of the control device and restraining an influence on other circuits to the minimum.
SOLUTION: This engine control device to drive and control a fuel injection valve having the coil for valve opening and the coil for holding has: a computing means; a coil driving circuit for valve opening to enumerate the signal to drive the coil for valve opening; a coil driving circuit for holding to enumerate the signal to drive the coil for holding; and a means to share a signal conductor from the computing means. The means to share the signal conductor outputs the signal for valve opening from the computing means to the coil driving circuit for valve opening as a signal to control the coil for valve opening by sharing the signal for valve opening.
COPYRIGHT: (C)2003,JPO
摘要翻译：要解决的问题：提供一种发动机控制装置，其设置在发动机的每个气缸上并配备有具有用于阀打开和保持的两个电磁线圈的喷射器，能够通过减少输出端口的数量来构造廉价的系统从控制装置的计算装置输出的开阀信号，并将其他电路的影响抑制到最小。解决方案：用于驱动和控制具有用于阀打开的线圈和用于保持的线圈的燃料喷射阀的发动机控制装置具有：计算装置; 用于阀打开的线圈驱动电路，用于列举用于驱动线圈用于阀打开的信号; 线圈驱动电路，用于保持以枚举信号以驱动线圈保持; 以及用于从计算装置共享信号导体的装置。共用信号导线的手段将通过计算装置开阀的信号输出到用于开阀的线圈驱动电路作为信号，以通过共享用于阀打开的信号来控制线圈的开阀。

6. 发明专利

JP2010012842A Electronic control device 有权
标题翻译：电子控制装置
公开(公告)号：JP2010012842A
公开(公告)日：2010-01-21
申请号：JP2008172885
申请日：2008-07-02
申请人： Hitachi Ltd , 株式会社日立製作所
发明人： TANAKA SAYAKA , NOZAWA KAZUNORI
IPC分类号： B60R16/02
CPC分类号： H05K5/0213
摘要： PROBLEM TO BE SOLVED: To solve a problem with a conventional electronic control device that when the pressure jet caused by the high-pressure washing strikes a breathing filter, a very small space is formed between an O-ring of the breathing filter and a contact surface of a cover, and water possibly enters inside a case. SOLUTION: In order to protect a breathing filter from pressure jet of the high-pressure washing, the breathing filter is supported by two kinds of projections of different heights so as not to be moved even when the pressure jet directly strikes the breathing filter during the high-pressure washing, preventing any very small space from being formed between an O-ring of the breathing filter and a contact surface of a cover, and preventing water ingress inside a case. COPYRIGHT: (C)2010,JPO&INPIT
摘要翻译：要解决的问题为了解决传统电子控制装置的问题，当由高压洗涤引起的压力射流撞击呼吸过滤器时，在呼吸过滤器的O形环之间形成非常小的空间和盖的接触表面，并且水可能进入壳体内部。
解决方案：为了保护呼吸过滤器免受高压清洗的压力喷射，呼吸过滤器由不同高度的两种突起支撑，以便即使当压力射流直接撞击呼吸时也不会移动在高压清洗期间过滤器，防止在呼吸过滤器的O形环和盖的接触表面之间形成非常小的空间，并防止水进入箱体内。版权所有（C）2010，JPO＆INPIT

7. 发明专利

JP2003148238A ELECTRONIC CONTROL UNIT 审中-公开
公开(公告)号：JP2003148238A
公开(公告)日：2003-05-21
申请号：JP2001347348
申请日：2001-11-13
申请人： HITACHI LTD
发明人： NOZAWA KAZUNORI
IPC分类号： F02D45/00 , F02D41/22 , G05B9/02 , G05B23/02
摘要： PROBLEM TO BE SOLVED: To prevent a control unit using a CPU from being out of control caused by a dangerous load driving state. SOLUTION: The CPU 110 comprises: a first output terminal 114b outputting a drive control signal for driving a load; a second output terminal 114c outputting an auxiliary control signal for performing the logical determination of a monitor signal received from a monitor circuit 130 to stop the driving of the load. A drive circuit 120 allows load drive control according to the drive control signal to forcibly stop the driving of the load.

8. 发明专利

JP2004124796A Electronic control device for automobile 审中-公开
公开(公告)号：JP2004124796A
公开(公告)日：2004-04-22
申请号：JP2002289362
申请日：2002-10-02
申请人： Hitachi Ltd , 株式会社日立製作所
发明人： NOZAWA KAZUNORI
IPC分类号： F02D45/00
摘要： PROBLEM TO BE SOLVED: To provide an electronic control device for an automobile capable of ensuring safety by preventing unexpectedly abnormal high voltage from being loaded (e.g. an injector, an ignition coil and a solenoid of relay or the like) and being applied to a driving circuit.
SOLUTION: A voltage supply system is the system in which an upstream power supply of the load controlled by the electronic control device for the automobile is converted from a high voltage source into a conventional low voltage by using a voltage converter or the like. The electronic control device for the automobile for driving and controlling the load which is provided in the automobile, comprises a computing device; a driving circuit for driving each load; a control circuit for controlling the driving circuit; and an external connection condition consisting of the load and the control device, and compensates for the operation of the circuit between the voltage converter, and the load or the driving circuit when the voltage is abnormally higher than that conventionally necessary.
COPYRIGHT: (C)2004,JPO

9. 发明专利

JP2007141959A Electronic controller and waterproof case 有权
标题翻译：电子控制器和防水盒
公开(公告)号：JP2007141959A
公开(公告)日：2007-06-07
申请号：JP2005330531
申请日：2005-11-15
申请人： Hitachi Ltd , 株式会社日立製作所
发明人： SHIGYO TOSHIKAZU , NOZAWA KAZUNORI
IPC分类号： H05K5/06
CPC分类号： H05K5/0052 , H05K5/0213 , Y10T137/0396 , Y10T137/2098
摘要： PROBLEM TO BE SOLVED: To prevent the mounting direction, attitude, and position of an electronic controller, in an engine room or the like from being regulated in the electronic controller, having a waterproof case provided with a breath filter. SOLUTION: The electronic controller is provided with a protective wall 60, which is erected so as to surround the arrangement part of the breath filter 50, and at least two or more drainage recesses 70, respectively opened at mutually different positions on the protective wall 60. COPYRIGHT: (C)2007,JPO&INPIT

10. 发明专利

JPH07115686A ELECTRONIC EQUIPMENT CONTROLLER 失效
公开(公告)号：JPH07115686A
公开(公告)日：1995-05-02
申请号：JP25801893
申请日：1993-10-15
申请人： HITACHI LTD , HITACHI AUTOMOTIVE ENG
发明人： NOZAWA KAZUNORI , YAMADA SHIGEKI
IPC分类号： B60R16/02 , B60R16/023 , H04L13/08 , H04Q9/00
摘要： PURPOSE:To output two control signals from one I/O port by superimposing a control signal turning on/off an output and a program monitoring pulse signal on one control signal as an exclusive OR signal. CONSTITUTION:CPU 2 calculates the signals from an input/output I/F circuit (I/O) 5 and SW 21 through the use of containing data of ROM 3 and RAM 4 and generates the control signal of an electronic equipment 22 so as to output it. The signal is the one with the exclusive OR or the ON/OFF signal with the program monitoring pulse signal with a fixed cycle and is outputted to an integration circuit 11 and a multivibrator(multi) 13. The output of the circuit 11 drives a mirror heater 22' with an output driving circuit 12, the multi 13 outputs the signal with a prescribed time constant and CPU 2 is reset as program abnormality when the relation is changed. Thus, the plural equipments are simultaneously controlled by the signal from one output port and an external reset function is obtained.

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