公开(公告)号：JP2009085038A

公开(公告)日：2009-04-23

申请号：JP2007252937

申请日：2007-09-28

Applicant: Denso Corp ,  株式会社デンソー

Inventor： KATO HIDEYUKI ,  KAJITA YUJI

IPC: F02P3/01 ,  F02P13/00 ,  H01T13/54

Abstract: PROBLEM TO BE SOLVED: To provide a plasma ignition device having excellent blocking performance with respect to radio noise and high reliability.
SOLUTION: The plasma ignition device is provided with an ignition plug 10 fitted to an internal combustion engine 50; a power source 20 for discharge; a power source 30 for plasma energy supply; and a radio noise reduction element part 40 comprising a rectifying element 305, a resister 27 and a capacitor 34. The radio noise reduction element part 40 is placed within a plug hole 501, and a SiC diode 350 comprising a wide band gap semiconductor is used for the rectifying element 305.
COPYRIGHT: (C)2009,JPO&INPIT

Abstract translation: 要解决的问题：提供一种等离子体点火装置，其具有相对于无线电噪声具有优异的阻挡性能和高可靠性。 等离子体点火装置设有安装在内燃机50上的火花塞10; 用于放电的电源20; 用于等离子体能量供应的电源30; 以及包括整流元件305，电阻器27和电容器34的无线电降噪元件部件40.无线电噪声降低元件部件40放置在插头孔501内，并且使用包括宽带隙半导体的SiC二极管350 对于整流元件305.版权所有（C）2009，JPO＆INPIT

公开(公告)号：JP2009041394A

公开(公告)日：2009-02-26

申请号：JP2007205310

申请日：2007-08-07

Applicant: Denso Corp ,  株式会社デンソー

Inventor： YAMAGUCHI MOTOO ,  KAJITA YUJI

IPC: F02P19/02 ,  F02D45/00

CPC classification number: F02P19/027

Abstract: PROBLEM TO BE SOLVED: To provide a drive device for suppressing the thermal destruction of a transistor for adjusting a supply power to a resistance load while absorbing the energy of a surge occurring in a power line by the resistance load to be controlled.
SOLUTION: A GCU 30 can control the power supplied from an alternator 22 or a battery 23 to a glow plug 20 through the power line 21. More specifically, in the GCU 30, the transistor is installed between the power line 21 and the glow plug 20, and controlled by an ECU 40. When the battery 23 is cut off from the power line 21, a load damp surge occurs in the power line 21. When the GCU 30 detects that the voltage of the power line 21 is higher than a predetermined voltage, it transits the transistor to on-state irrespective of whether the ECU controls the transistor or not, and maintains the transistor in on-state until a predetermined time is elapsed from that time.
COPYRIGHT: (C)2009,JPO&INPIT

Abstract translation: 要解决的问题：提供一种用于抑制用于调节对电阻负载的供电的晶体管的热破坏的驱动装置，同时通过要控制的电阻负载吸收在电力线中发生的浪涌的能量。 解决方案：GCU 30可以通过电源线21控制从交流发电机22或电池23提供给电热塞20的电力。更具体地说，在GCU 30中，晶体管安装在电力线21和 电热塞20，由ECU40控制。当电池23从电力线21断开时，电力线21发生负载潮湿浪涌。当GCU30检测到电力线21的电压为 高于预定电压，则不管ECU是否控制晶体管，晶体管都转换为导通状态，并且保持晶体管处于导通状态，直到从该时间过去预定时间。 版权所有（C）2009，JPO＆INPIT

公开(公告)号：JP2007186039A

公开(公告)日：2007-07-26

申请号：JP2006004796

申请日：2006-01-12

Applicant: Denso Corp ,  株式会社デンソー

Inventor： KAJITA YUJI ,  KATO NAOTO

IPC: B60Q11/00

CPC classification number: H05B33/0893 ,  H05B33/0815 ,  Y02B20/347

Abstract: PROBLEM TO BE SOLVED: To improve reliability of a headlamp device for a vehicle, using light-emitting diodes.
SOLUTION: A diode array 1 is constituted by connecting a lot of light-emitting diodes D in series, and a current to be fed to the diode array 1 is controlled to be a predetermined target level, so that the current fed to each light-emitting diode D of the diode array 1 and the light emission quantity of each light-emitting diode D are maintained at that target level. A microcomputer 12 easily detects short-circuit fault of any one of light-emitting diodes based on the fluctuation in voltage drop making use of the fact that the fluctuation in voltage drop of a normal light-emitting diode is small due to the constant current control.
COPYRIGHT: (C)2007,JPO&INPIT

Abstract translation: 要解决的问题：为了提高车辆的前照灯装置的可靠性，使用发光二极管。 解决方案：通过串联连接许多发光二极管D来构成二极管阵列1，将要馈送到二极管阵列1的电流被控制为预定的目标电平，使得馈送到 二极管阵列1的每个发光二极管D和每个发光二极管D的发光量保持在该目标水平。 微型计算机12根据电压降的波动容易地检测发光二极管中的任何一个的短路故障，这是由于恒定的电流控制，正常的发光二极管的电压降的波动小 。 版权所有（C）2007，JPO＆INPIT

公开(公告)号：JP2001043989A

公开(公告)日：2001-02-16

申请号：JP21788999

申请日：1999-07-30

Applicant: DENSO CORP ,  KOITO MFG CO LTD

Inventor： YAMAMOTO NOBORU ,  KAJITA YUJI ,  ODA SATOSHI ,  NOYORI YASUSHI

IPC: H02M7/48 ,  H02M7/5387 ,  H05B41/18 ,  H05B41/24 ,  H05B41/282

Abstract: PROBLEM TO BE SOLVED: To surely detect an earth fault even if power is fed to a discharge lamp device when the electric wiring of a lamp is grounded due to some cause and to surely operate a fail-safe in the earth fault state. SOLUTION: After a predetermined period elapses since the voltage of a battery 1 is applied to a DC-DC converter 4 and the DC-DC converter 4 starts to operate, the on-off operation of MOS transistors 61a-61d is started, and before the predetermined period elapses, the MOS transistors 61a-61d are brought into an off-state. By bringing the four MOS transistors 61a-61d into the off-state before the predetermined period elapses since the DC-DC converter 4 starts to operate like this, an oscillating condition that a grounding current intermittently flows is not caused, so that the earth fault can surely be detected. Thereby, a fail-safe can surely be operated, and the occurrence of the fusing of a fuse or the like can be prevented.

公开(公告)号：JP2013079897A

公开(公告)日：2013-05-02

申请号：JP2011220814

申请日：2011-10-05

Applicant: Denso Corp ,  株式会社デンソー

Inventor： KATO NORIO ,  YAMAMOTO MASAHIRO ,  SHIMIZU TAKUMI ,  KAJITA YUJI

IPC: G01R31/02 ,  B60L3/00 ,  H02H3/16

Abstract: PROBLEM TO BE SOLVED: To allow for electrical leak detection of a ground-insulated motor device and a ground-insulated catalyst device using only one electrical leak detector while sufficiently reducing the cost.SOLUTION: An electrical leak detection system includes a high potential side isolation switch (semiconductor switch 51) connected to the high potential side of an electrically heated catalyst (EHC) 20 and a low potential side isolation switch (electromagnetic relay 52) connected to the low potential side of the EHC 20. When checking the catalyst device for electrical leakage, the check is done while turning off the semiconductor switch 51 and turning on the electromagnetic relay 52. Should leakage be detected in the catalyst device, both of the isolation switches 51, 52 are turned off in order to prevent further leakage. The semiconductor switch 51, which functions as the high potential side isolation switch, also performs duty control by switching on/off the conduction to the EHC 20.

Abstract translation: 要解决的问题：为了允许在充分降低成本的同时仅使用一个电气泄漏检测器的接地绝缘电动机装置和接地绝缘催化剂装置的漏电检测。 解决方案：电气泄漏检测系统包括连接到电加热催化剂（EHC）20的高电位侧的高电位侧隔离开关（半导体开关51）和连接到电加热催化剂（EHC）20的低电位侧隔离开关（电磁继电器52） 到EHC20的低电位侧。当检查催化剂装置是否漏电时，在关闭半导体开关51并接通电磁继电器52的同时进行检查。如果在催化剂装置中检测到泄漏， 隔离开关51,52关闭，以防止进一步的泄漏。 用作高电位侧隔离开关的半导体开关51也通过接通/断开对EHC 20的导通来执行占空比控制。（C）2013，JPO和INPIT

公开(公告)号：JP2012237280A

公开(公告)日：2012-12-06

申请号：JP2011108109

申请日：2011-05-13

Applicant: Denso Corp ,  株式会社デンソー

Inventor： KAJITA YUJI

IPC: F01N3/28 ,  B01D53/86 ,  F01N3/24

Abstract: PROBLEM TO BE SOLVED: To provide an exhaust emission control device effectively discharging moisture within a carrier containing part and preventing a reduction in flexibility of an installation position of a catalyst carrier.SOLUTION: The exhaust emission control device 1 is disposed in an exhaust passage of an internal combustion engine 6. The device 1 includes the catalyst carrier 10 to be heated by energization, the carrier containing part 21 configuring a part of the exhaust passage and containing the catalyst carrier 10. The device 1 includes upstream piping 3 disposed upstream of the carrier containing part 21, and downstream piping 4 disposed downstream thereof. The carrier containing part 21 includes a side wall part 22 holding the catalyst carrier 10. An inner surface 223 of the side wall part 22 is formed in parallel with an axial direction and is inclined such that the downstream side goes down. A connection opening 41 in the downstream piping 4 is opened at a position continuous to a lowermost part 211 of the inner surface 223 of the side wall part 22.

Abstract translation: 要解决的问题：提供一种排气排放控制装置，其有效地排出载体包含部分内的水分，并防止催化剂载体的安装位置的柔性降低。 解决方案：废气排放控制装置1设置在内燃机6的排气通道中。装置1包括通过通电而被加热的催化剂载体10，载体容纳部21构成排气通道的一部分 并包含催化剂载体10.装置1包括设置在载体容纳部分21的上游的上游管道3和设置在其下游的下游管道4。 载体包含部分21包括保持催化剂载体10的侧壁部分22.侧壁部分22的内表面223形成为与轴向平行，并且倾斜使得下游侧下降。 下游管道4中的连接开口41在与侧壁部分22的内表面223的最下部211连续的位置处打开。版权所有：（C）2013，JPO＆INPIT

公开(公告)号：JP2012215145A

公开(公告)日：2012-11-08

申请号：JP2011081633

申请日：2011-04-01

Applicant: Denso Corp ,  株式会社デンソー

Inventor： KATO NORIO ,  KAJITA YUJI

IPC: F01N3/24 ,  B01D53/94 ,  F01N3/20 ,  F01N9/00

CPC classification number: Y02T10/47

Abstract: PROBLEM TO BE SOLVED: To provide a catalyst energization control device capable of achieving cost reduction by restraining the flow of a large current without impairing the early activation of a catalyst.SOLUTION: The catalyst energization control device applied to a catalyst device (EHC) constituted carrying a catalyst on a base material includes a duty control means for performing duty control so that power supplied to the base material is target power when the base material has such a characteristic (NTC characteristic) that an own electric resistance value decreases accompanied by a rise of a temperature, and an power shortage computing means for computing a shortage S1 in the total supply power to the target total power in an power shortage period B1 until a catalyst temperature rises to a temperature at which a resistance value that can input target power is obtained after the start of energization to the base material. The catalyst energization control device carries out the replenishment control of performing duty control to supply power higher than the target power in a period (replenishment period B2) until the shortage S1 is replenished after the lapse of the power shortage period B1.

Abstract translation: 解决的问题：提供能够通过抑制大电流的流动而不损害催化剂的早期活化而实现成本降低的催化剂通电控制装置。 ＆lt; P＆gt;解决方案：应用于在基材上承载催化剂的催化剂装置（EHC）的催化剂通电控制装置包括负载控制装置，用于执行占空比控制，使得当基材 具有自身电阻值随着温度升高而降低的特性（NTC特性），以及用于在电力短缺期间B1中计算与目标总功率的总供电量中的短缺S1的电力不足运算单元 直到催化剂温度上升到在向基材开始通电之后获得能够输入目标功率的电阻值的温度。 催化剂通电控制装置在电力短缺期间B1之后进行补充控制，以进行占空比控制以供给高于目标功率的电力（补充期间B2），直到短缺S1补充。 版权所有（C）2013，JPO＆INPIT

公开(公告)号：JP2008121457A

公开(公告)日：2008-05-29

申请号：JP2006303913

申请日：2006-11-09

Applicant: Denso Corp ,  株式会社デンソー

Inventor： KAJITA YUJI

IPC: F02P19/02 ,  F23Q7/00 ,  F23Q7/22

Abstract: PROBLEM TO BE SOLVED: To provide a circuit abnormality detection device capable of detecting a short failure in addition to an open failure while restraining increase of the number of components.
SOLUTION: In the case where a second detection means corresponding to a glow plug 4 detects abnormality when a channel duty signal ch3 is on and a channel duty signal ch4 is off, a control circuit postpones stopping of the output of the channel duty signal ch4 for a predetermined period. When a first detection means corresponding a glow plug 3 detects abnormality within the predetermined period, it is determined that the abnormality is a short failure where a first detection point corresponding to the glow plug 3 is sort-circuited to a second detection point corresponding to the glow plug 4, or the abnormality is an open failure where each of the glow plug 3 and the glow plug 4 is in an open failure. When the first detection means does not detect abnormality within the predetermined period, it is determined that the glow plug 4 is in an open failure.
COPYRIGHT: (C)2008,JPO&INPIT

Abstract translation: 要解决的问题：提供一种能够在抑制组件数量的增加的同时检测除了开路故障之外的短路故障的电路异常检测装置。 解决方案：在通道占空比信号ch3导通并且通道占空信号ch4断开时，对应于电热塞4的第二检测装置检测到异常的情况下，控制电路推迟通道占空比的输出停止 信号ch4预定时间。 当对应于电热塞3的第一检测装置在预定时段内检测到异常时，确定异常是短路故障，其中对应于预热塞3的第一检测点与对应于预热塞3的第二检测点分类 电热塞4，或者异常是开启故障，其中每个电热塞3和电热塞4处于开放故障。 当第一检测装置在预定时间段内没有检测到异常时，确定电热塞4处于开启故障。 版权所有（C）2008，JPO＆INPIT

公开(公告)号：JP2007188692A

公开(公告)日：2007-07-26

申请号：JP2006004345

申请日：2006-01-12

Applicant: Denso Corp ,  株式会社デンソー

Inventor： KAJITA YUJI

IPC: H05B37/02 ,  B60Q1/00 ,  B60Q11/00

CPC classification number: H05B33/089 ,  H05B33/0815 ,  Y02B20/341

Abstract: PROBLEM TO BE SOLVED: To provide an LED lamp device capable of rapidly suppressing an overcurrent when a short circuit failure occurs in a light emitting diode assembly and thereby capable of protecting the light emitting diodes. SOLUTION: An LED unit 10 as a light source is composed by connecting a plurality of LEDs in series to one another, and power is supplied to the LED unit 10 from a D.C.-D.C. converter 20. An energizing current of the LED unit 10 is detected by a resistor 30. An output voltage of the D.C.-D.C. converter 20 is variably set based on the detection value of the energizing current. In this case, this LED lamp device is further provided with an operational amplifier 31 for comparing the detection value of the energizing current with a predetermined overcurrent determination value, and a transistor 40 as a current adjustment element arranged in series to the LED unit 10; and is structured to adjust the energizing current when the energizing current is above the overcurrent determination value. COPYRIGHT: (C)2007,JPO&INPIT

Abstract translation: 要解决的问题：提供一种能够在发光二极管组件中发生短路故障时能够快速抑制过电流并因此能够保护发光二极管的LED灯装置。 解决方案：作为光源的LED单元10通过将多个LED串联连接而构成，并且从直流电源向LED单元10供电。 LED单元10的通电电流由电阻器30检测。D.C.D.C.的输出电压 转换器20基于激励电流的检测值可变地设定。 在这种情况下，该LED灯装置还具有用于将通电电流的检测值与规定的过电流判定值进行比较的运算放大器31和作为与LED单元10串联布置的电流调节元件的晶体管40; 并且被构造成当通电电流高于过电流判定值时调节通电电流。 版权所有（C）2007，JPO＆INPIT

公开(公告)号：JP2003003889A

公开(公告)日：2003-01-08

申请号：JP2001187259

申请日：2001-06-20

Applicant: Denso Corp ,  株式会社デンソー

Inventor： KAJITA YUJI

IPC: F02P3/02 ,  F02D41/06 ,  F02D41/34 ,  F02M37/00 ,  F02M37/08 ,  F02M69/00 ,  F02N9/04

CPC classification number: Y02T10/123

Abstract: PROBLEM TO BE SOLVED: To provide a fuel supply device for an internal combustion engine which is controlled electronically according to the operation condition of the engine and also is startable with power generation by a man power such as a kick function.
SOLUTION: This fuel supply device for the internal combustion engine is provided with a fuel pump 52 for pumping up a fuel from a, fuel tank 51, a fuel injection valve 5 for injecting the fuel discharged from the fuel pump 52 into the engine 100, and a control means 30 for controlling a fuel injection amount by making variable the opening period of the fuel injection valve 5. In this case, a pressurized tank 53 is provided between the fuel pump 52 and the fuel injection valve 5, and the fuel discharged from the intermittently operated fuel pump 52 is stored in the pressurized tank 53 so as to keep the range of prescribed fuel pressure.
COPYRIGHT: (C)2003,JPO

Abstract translation: 要解决的问题：提供一种内燃机的燃料供给装置，该燃料供给装置根据发动机的运行状态进行电子控制，并且还可以通过诸如脚踏功能的人力发电来启动。 解决方案：用于内燃机的燃料供应装置设置有用于从燃料箱51抽取燃料的燃料泵52，用于将从燃料泵52排出的燃料喷射到发动机100中的燃料喷射阀5， 以及用于通过使燃料喷射阀5的打开时段变化来控制燃料喷射量的控制装置30.在这种情况下，在燃料泵52和燃料喷射阀5之间设置有加压罐53，并且燃料排出 间歇运转的燃料泵52被储存在加压罐53中，以保持规定的燃料压力的范围。