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1. 发明专利

JPH06311799A CONTROL SYSTEM FOR AC GENERATOR DRIVEN BY INTERNAL COMBUSTION ENGINE 失效
公开(公告)号：JPH06311799A
公开(公告)日：1994-11-04
申请号：JP1145994
申请日：1994-02-03
申请人： HITACHI LTD , HITACHI AUTOMOTIVE ENG
发明人： HIKITA SAKAE , MAEDA YUJI , FUJISHITA MASAKATSU , SATO MASAHIRO , KAWASAKI SEIICHI , EBISAWA TAKAYUKI
IPC分类号： H02J7/16 , H02P9/14
摘要： PURPOSE:To stabilize power performance of an internal combustion engine by always correcting a generated voltage command value in response to an operating state of the engine. CONSTITUTION:Pieces of information such as an engine speed Ne, an engine water temperature TW, a throttle opening theta, an engine intake air amount Q, etc, of parameters of an internal combustion engine are input to an arithmetic processor 8. An electric load state and a vehicle traveling state are load- identified from the conditions. Thereafter, a target generated voltage for controlling an output of a generator 3 is so set as to become optimum for a vehicle state according to the load identified state. These processes are calculated in the processor 8, and a generated voltage command value P corresponding to the target generated voltage is output to a field current controller 5, thereby controlling a storage battery voltage in the generator 3 to a target generated voltage. In this case, the processor 8 detects a voltage difference between the battery voltage and the target voltage, thereby correcting the value P by the difference.

2. 发明专利

JPH0797954A KNOCKING DETECTION METHOD OF INTERNAL COMBUSTION ENGINE AND IGNITION TIMING CONTROLLER USING IT 失效
公开(公告)号：JPH0797954A
公开(公告)日：1995-04-11
申请号：JP24422493
申请日：1993-09-30
申请人： HITACHI LTD , HITACHI AUTOMOTIVE ENG
发明人： SATO MASAHIRO , FUJISHITA MASAKATSU , SHIDA MASAMI , EBISAWA TAKAYUKI , KAWASAKI SEIICHI
IPC分类号： F02P5/152 , F02D45/00 , F02P5/153
摘要： PURPOSE:To surely prevent erroneous judgement of knocking by setting a back ground level initial value at the time of entering into a knocking control range, in a ratio type knocking control method using a resonant frequency where knocking control is limited only in a specified operational range. CONSTITUTION:An injector 16 and an ignition coil 13 are respectively controlled by a control unit 9 based on respective detection signals from respective sensors 2, 5, 11, 12, 200 for respectively detecting operational condition of an engine 7. Namely, characteristic component of knocking is extracted and comparison component is calculated so as to judge the knocking based on the detection signal particularly from the combustion condition sensor 200. In this case, the comparison component is calculated only in a specified operational range, and then the calculated value of the comparison component at the time of separation from this range is maintained. On the other hand, the calculated value of the maintained comparison component is compared with a standard value of the comparison component preliminarily determined at the time of reentering into the specified operational range. The larger value can be made the initial value of the comparison component at time of entering.

3. 发明专利

JPH0739083A METHOD AND SYSTEM FOR CONTROLLING GENERATOR FOR VEHICLE 失效
公开(公告)号：JPH0739083A
公开(公告)日：1995-02-07
申请号：JP18101493
申请日：1993-07-22
申请人： HITACHI LTD , HITACHI AUTOMOTIVE ENG
发明人： EBISAWA TAKAYUKI , FUJISHITA MASAKATSU , SATO MASAHIRO , KAWASAKI SEIICHI
IPC分类号： H02J7/16 , H02J7/24 , H02P9/14
摘要： PURPOSE:To extend the operational life of a battery while the operational performance and the low fuel consumption of an internal combustion engine are maintained by a method wherein the state of a vehicle is monitored and a voltage instruction value is corrected and renewed so as to have the voltage of the battery agree with a target generated voltage. CONSTITUTION:An operational state detecting means 20 and an electrical load detecting means 21 judge the vehicle state in accordance with the sensed results of various sensors. A target voltage setting means 22 sets the target generator voltage corresponding to the vehicle state. A voltage instructing means 23 replaces the target generator voltage with a voltage instruction value. A correction value arithmetic unit 25 compares the voltage of a battery 14 with the target generator voltage and calculates a correction value and stores it and, further, corrects and renews the voltage instruction value in accordance with a predetermined rule. A generator 16 generates under the regulation of a regulator 17 in accordance with the renewed voltage instruction value. The correction is made when the vehicle state is stable or every predetermined renewal period.

4. 发明专利

JP2003293847A Engine controller and screening method 审中-公开
标题翻译：发动机控制器和筛选方法
公开(公告)号：JP2003293847A
公开(公告)日：2003-10-15
申请号：JP2002104939
申请日：2002-04-08
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： TANNO HEIKICHI , ONO KOICHI , NAKAZURU KUNIHITO , EBISAWA TAKAYUKI , MIYASHITA KIMIO
IPC分类号： G01R31/30 , F02D45/00 , G01R31/28
摘要： PROBLEM TO BE SOLVED: To provide an engine controller and a screening method wherein a voltage switching command signal for screening is positively and reliably realized by a simple system without requiring an exclusive input terminal.
SOLUTION: The engine controller 107 is provided with integrated circuits 200, 112 and 113 inputted with various types of sensor signals via input terminals 20-0 to 20-n to carry out arithmetic processes necessary for control, and an output voltage regulating circuit 250 for selectively setting a rated voltage used in normal operation and a rated voltage for screening. When a predetermined signal level not used in the normal operation is inputted in one or more of the sensor signal input terminals 20-0 to 20-2 used in the normal operation, a CPU 200 issues a command to the output voltage regulating circuit 250 to switch to the rated voltage for screening.
COPYRIGHT: (C)2004,JPO
摘要翻译：要解决的问题：提供一种发动机控制器和筛选方法，其中用于筛选的电压切换命令信号通过简单的系统可靠地可靠地实现，而不需要专用输入端子。解决方案：发动机控制器107设置有经由输入端子20-0至20-n输入各种类型的传感器信号的集成电路200,112和113，以执行控制所需的运算处理，并且输出电压调节电路250，用于选择性地设定正常工作中使用的额定电压和额定电压进行筛选。当在正常操作中使用的一个或多个传感器信号输入端子20-0至20-2中输入在正常操作中未使用的预定信号电平时，CPU 200向输出电压调节电路250发出命令切换到额定电压进行筛选。版权所有（C）2004，JPO

5. 发明专利

JP2004235173A Method of mounting small-sized part 审中-公开
公开(公告)号：JP2004235173A
公开(公告)日：2004-08-19
申请号：JP2003018172
申请日：2003-01-28
申请人： Hitachi Ltd , 株式会社日立製作所
发明人： EBISAWA TAKAYUKI
IPC分类号： H05K3/34
摘要： PROBLEM TO BE SOLVED: To solve the problem that though an electronic part is miniaturized accompanying the miniaturization of a substrate, a section between electrodes for the electronic part is narrowed by the miniaturization of the electronic part and an electrical short circuit is generated between the electrodes by the surface tension of a connecting member such as solder or a conductive paste material containing metallic particles such as Ag, Cu, Ni or the like.
SOLUTION: In a method of mounting the electronic part for the substrate, the shape of a printing mask for coating a conductor on the substrate side or the connecting member is formed in a triangle or a semicircle, the radius of the semicircle to the lateral-direction size of the part or the height size of the triangle is formed in 1/2Y to a size (Y) in the lateral direction, and the flow of a mounting member between the electrodes is inhibited. Even when the substrate is miniaturized and the electronic part mounted on the substrate is miniaturized, the electrical short circuit between the electrodes for the part is prevented, the durability of the substrate and the electronic part is not damaged and the part can be mounted with a high reliability.
COPYRIGHT: (C)2004,JPO&NCIPI

6. 发明专利

JP2004100635A Engine control device 有权
公开(公告)号：JP2004100635A
公开(公告)日：2004-04-02
申请号：JP2002266200
申请日：2002-09-12
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： EBISAWA TAKAYUKI , NAKATSURU KUNITO , ONO KOICHI
IPC分类号： F02D35/00 , F02D41/00 , H05K5/02
摘要： PROBLEM TO BE SOLVED: To provide an engine control device for reducing influence of all kinds of fluids entering a control unit and improving responsiveness to pressure detection.
SOLUTION: The engine control device positioned in an engine room has a filter in the control unit with a structure for allowing only air to pass through so that oil, water, and other fluids cannot enter the control unit, and is a built-in sensor waterproof type characterized in having a built-in atmospheric pressure sensor inside the control unit. The sensor built-in waterproof type engine control device is also characterized in the built-in atmospheric sensor inside the waterproof type control unit being positioned near (10 mm or less) an air introduction hole.
COPYRIGHT: (C)2004,JPO

7. 发明专利

JP2003129894A SENSOR SIGNAL DETECTION CIRCUIT FOR AUTOMOBILE, ENGINE CONTROL UNIT AND CIRCUIT UNIT 审中-公开
公开(公告)号：JP2003129894A
公开(公告)日：2003-05-08
申请号：JP2001327455
申请日：2001-10-25
申请人： HITACHI LTD , HITACHI CAR ENG CO LTD
发明人： EBISAWA TAKAYUKI , ONO KOICHI
IPC分类号： F02D45/00 , F02D41/22
摘要： PROBLEM TO BE SOLVED: To eliminate restriction by the pattern layout and to reduce or prevent mixture of noise in the reference voltage for detecting a sensor signal even when a sensor signal detection circuit for automobile is mounted on a circuit substrate together with an oscillator circuit which may be a noise generating source. SOLUTION: By applying the reference voltage (direct-current bias) set by a reference voltage setting means 9 to output voltage from a sensor such as an O2 sensor provided in an exhaust pipe of an automobile, the signal of the O2 sensor is detected. On the basis of the sensor signal, air fuel ratio control is performed. The characteristics of degradation of the O2 sensor is also judged based on the sensor signal. Further, a capacitor 6 for removing noise is connected to a bias point 8 for applying the direct-current bias.

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