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1. 发明专利

JP2004294404A Disconnection detecting circuit 有权
公开(公告)号：JP2004294404A
公开(公告)日：2004-10-21
申请号：JP2003090968
申请日：2003-03-28
申请人： Denso Corp , 株式会社デンソー
发明人： ITO MAKOTO , ANDO AKIRA , TAKEUCHI SHIGERU
IPC分类号： G01R31/02 , B60R16/02
摘要： PROBLEM TO BE SOLVED: To prevent erroneous detection of disconnection of a load even if the load is a motor, and to prevent upsizing of a chip in case of configuration with an integrated circuit.
SOLUTION: A disconnection detecting circuit 7 has a bypass current-carrying path R parallel to a switching element 4, and detects a voltage at the connection point among the switching element 4, the bypass current-carrying path R, and a load 3. Based on the detected voltage, disconnection of the load 3 is detected. A constant current source 20 makes a disconnection detecting constant current flow the load 3 through the bypass current-carrying path R when the switching element 4 is turned off. A delay circuit 19 invalidates disconnection detection operation after the switching element 4 is turned off before the set time.
COPYRIGHT: (C)2005,JPO&NCIPI

2. 发明专利

JP2008312430A Load controller 有权
标题翻译：负载控制器
公开(公告)号：JP2008312430A
公开(公告)日：2008-12-25
申请号：JP2007327316
申请日：2007-12-19
申请人： Denso Corp , 株式会社デンソー
发明人： MATSUO YOSUKE , TAKEUCHI SHIGERU , SATO TAKETOSHI
IPC分类号： H02P7/285 , F02M37/08
CPC分类号： Y02T10/40
摘要： PROBLEM TO BE SOLVED: To provide a load controller conducting a fault diagnosis and the confirmation of the operation state of a load by one signal line. SOLUTION: In a fuel-pump controller 1, a ground fault detection circuit 43 and a line-to-line fault detection circuit 44 output a ground fault detection signal or a line-to-line fault detection signal when it is detected that a common connecting point (a drain) with a motor 3 and an FET 7 is in a ground fault state or a line-to-line fault state. In the controller 1, an operation-state monitor circuit 45 outputs the normal operation signal of the motor 3. In the controller 1, a signal synthetic circuit 37 synthesizes the ground fault detection signal, the line-to-line fault detection signal and the normal operation signal and outputs them from a common signal output terminal. COPYRIGHT: (C)2009,JPO&INPIT
摘要翻译：要解决的问题：提供进行故障诊断的负载控制器和通过一个信号线确认负载的操作状态。解决方案：在燃料泵控制器1中，接地故障检测电路43和线对线故障检测电路44在检测到接地故障检测信号或线对线故障检测信号时输出与电机3和FET 7的共同连接点（漏极）处于接地故障状态或线对线故障状态。在控制器1中，操作状态监视电路45输出电动机3的正常操作信号。在控制器1中，信号合成电路37合成接地故障检测信号，线间故障检测信号和正常操作信号，并从公共信号输出端输出。版权所有（C）2009，JPO＆INPIT

3. 发明专利

JP2005307957A Driving device for secondary air introducing system 有权
标题翻译：二次空气引导系统的驱动装置
公开(公告)号：JP2005307957A
公开(公告)日：2005-11-04
申请号：JP2004212928
申请日：2004-07-21
申请人： Denso Corp , 株式会社デンソー
发明人： ITO MAKOTO , TAKEUCHI SHIGERU , ANDO AKIRA
IPC分类号： F02D43/00 , F01N3/00 , F01N3/10 , F01N3/22 , F01N3/32 , F01N3/34 , F01N11/00 , F02D41/22 , F02D45/00 , F02K99/00 , F02M33/02
CPC分类号： F02D41/221 , F01N3/22 , F01N3/32 , F01N11/00 , F02D2041/2075 , Y02T10/20 , Y02T10/40 , Y02T10/47
摘要： PROBLEM TO BE SOLVED: To promptly and certainly correspond when an abnormal condition occurs in a secondary air introducing system.
SOLUTION: An air pump for inducing secondary air to an upstream side exhaust passage of exhaust emission controlling catalyst of an engine, a solenoid valve driving motor 12a, and an electromagnetic coil 13a are energized or disenergized by MOSFETs 21, 22. The MOSFETs 21, 22 are turned on/off by input signal processing circuits 21d, 22d receiving an order from an ECU17, through gate driving circuits 21a and 22a. A temperature detecting circuit 28, and output monitor circuits 29, 30 detect an abnormal condition related to operation control of the air pump and the solenoid valve. When the abnormal condition is detected, the MOSFETs 21, 22 are forcibly turned off to intercept the current to the motor 12a and the electromagnetic coil 13a. A diagnosis circuit 32 outputs a diagnosis signal indicating a load controlling state by input signal processing circuits 21d, 22d, the temperature detecting circuit 28, and output monitor circuits 29, 30 to the ECU 17.
COPYRIGHT: (C)2006,JPO&NCIPI
摘要翻译：要解决的问题：在二次空气引入系统中出现异常情况时，要及时，肯定地对应。解决方案：用于对发动机，电磁阀驱动电动机12a和电磁线圈13a的废气排放控制催化剂的上游侧排气通道进行二次空气的空气泵由MOSFET 21,22激励或消除电能。 MOSFET 21,22由输入信号处理电路21d，22d通过栅极驱动电路21a和22a从ECU17接收命令而导通/截止。温度检测电路28和输出监视电路29,30检测与气泵和电磁阀的运转控制有关的异常状况。当检测到异常情况时，MOSFET 21,22被强制关闭以截取到电动机12a和电磁线圈13a的电流。诊断电路32通过输入信号处理电路21d，22d，温度检测电路28和输出监视电路29,30将表示负载控制状态的诊断信号输出到ECU 17.版权所有（C）2006， JPO＆NCIPI

4. 发明专利

JPH09151823A FUEL FEEDING DEVICE 失效
公开(公告)号：JPH09151823A
公开(公告)日：1997-06-10
申请号：JP30873195
申请日：1995-11-28
申请人： DENSO CORP
发明人： MIWA MAKOTO , YOSHIUME NAOKI , OI KIYOTOSHI , MINAGAWA KAZUJI , TAKEUCHI SHIGERU , ANDO AKIRA
IPC分类号： F02M37/08 , F02D41/06 , F02D41/30 , F02M37/10
摘要： PROBLEM TO BE SOLVED: To improve startability and emission by a method wherein a fuel pressure increase rate during the starting of an engine is increased and the occurrence of fuel pressure overshoot is suppressed. SOLUTION: During starting, the number Np of revolutions of a fuel pump is compared with the first given number Np1 of revolutions (step 105). In a case of Np

5. 发明专利

JPH11229875A COOLING SYSTEM FOR VEHICLE 失效
公开(公告)号：JPH11229875A
公开(公告)日：1999-08-24
申请号：JP33615398
申请日：1998-11-26
申请人： DENSO CORP
发明人： KUWAYAMA MASATOSHI , HIRAO YASUNOBU , TAKEUCHI SHIGERU , ITO TAKAFUMI , YOSHIMURA SATOSHI
IPC分类号： F01P5/04 , F01P7/04 , H02P1/18
摘要： PROBLEM TO BE SOLVED: To overcome the problem of rush current by simplifying the structure of a cooling system for a vehicle controlled to have the revolution speed of the motor cooling fan set to a predetermined value. SOLUTION: If the relay switch is turned ON, the voltage of a battery 1 is applied to an integrating circuit 9. Then the output of the integrating circuit 9 is applied to a gate G of MOS transistor 8. The voltage applied to the gate slowly rises in the state of delayed rise-up by the integrating circuit 9 in accordance with the time constant. When the voltage applied to the gate reaches a threshold voltage of the MOS transistor 8, the MOS transistor 8 is turned ON. However, when the voltage applied to the gate is low, the train current flowing through the MOS transistor 8 is limited. As a result, the motor 2 is activated slowly to gradually increase the revolution speed.

6. 发明专利

JPH09184460A FUEL SUPPLY DEVICE FOR RETURNLESS TYPE INTERNAL COMBUSTION ENGINE AND ITS ADJUSTING METHOD 失效
公开(公告)号：JPH09184460A
公开(公告)日：1997-07-15
申请号：JP13874096
申请日：1996-05-31
申请人： DENSO CORP
发明人： MINAGAWA KAZUJI , OI KIYOTOSHI , MATSUDA TAKESHI , TAKEUCHI SHIGERU
IPC分类号： F02M37/08 , F02D41/14
摘要： PROBLEM TO BE SOLVED: To provide a fuel supply device for a returnless type internal combustion engine having an energetically advantageous function to reduce consumption of electric power, etc., in simple constitution and control without requiring excess fuel and its adjusting method. SOLUTION: Target fuel pressure is set by steps 50 and 51 in accordance with a driving state of an internal combustion engine. A supply electric current (electric current target value) to a pump motor is found in accordance with the target fuel pressure by following steps 52-53. An electric current actually flowing to the pump motor is detected by a step 55, and the electric current target value and a detected electric current value found by the step 55 are compared with each other by a following step 56. By a following step 58, in accordance with a difference between the electric current target value obtained by comparison and the detected electric current value, the supply electric current is feedback-controlled so as to eliminate the difference.

7. 发明专利

JPH0942096A CONTROL DEVICE FOR ELECTRIC MOTOR 失效
公开(公告)号：JPH0942096A
公开(公告)日：1997-02-10
申请号：JP19762995
申请日：1995-08-02
申请人： DENSO CORP
发明人： SATO TAKETOSHI , YAMADA MASAO , TAKEUCHI SHIGERU
IPC分类号： F02M37/08 , G05F1/56 , H02M3/155 , H03K17/0814 , H03K17/16
摘要： PROBLEM TO BE SOLVED: To prevent giving an influence to a radio receiver or the like, by suppressing a high frequency radio noise of frequency higher than a switching frequency generated by switching a switching element, in a control device of PWM power controlling an electric motor. SOLUTION: In a device of controlling a rotational speed or the like of an electric motor 10 by high speed switching with a PWM signal a switching element 12 consisting of MOS-FET, a gate of the switching element 12 and the switching element of the electric motor 10 are provided with a high frequency noise absorbing capacitor Co between themselves and an opposite side terminal. As a result, a high frequency noise FM band generated by a recovery current flowing in a flywheel diode D1, when turned off the switching element 12, and a high frequency noise AM band generated by overshooting voltage VD, when turned off the switching element 12, can be both suppressed.

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