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51. 发明专利

JP2005324094A Flocculation device for exhaust gas treatment apparatus 有权
标题翻译：用于排气处理设备的絮凝装置
公开(公告)号：JP2005324094A
公开(公告)日：2005-11-24
申请号：JP2004142683
申请日：2004-05-12
申请人： Denso Corp , 株式会社デンソー
发明人： OKAJIMA MASAHIRO
IPC分类号： F01N3/02 , B01D53/94 , B03C3/02 , B03C3/155 , B03C3/40 , B03C3/45 , B03C3/47
摘要： PROBLEM TO BE SOLVED: To provide a flocculation device for an exhaust gas treatment apparatus constituted so as to purify particulates in an exhaust gas using corona discharge and capable of enhancing the flocculation properties of the particulates in the exhaust gas. SOLUTION: The flocculation device 1 for the exhaust gas treatment apparatus is used in the exhaust gas treatment apparatus, which is equipped with a charging part 2 and a flocculation part 4 and utilizes the corona discharge generated in the charging part 2 to purify the particulates (PM) contained in the exhaust gas from an internal combustion engine. A first conductive body 41 arranged on the downstream side of the flow of the exhaust gas of the charging part 2 is provided to the flocculation part 4 and positive potential is applied to the first conductive body 41. COPYRIGHT: (C)2006,JPO&NCIPI
摘要翻译：解决的问题：提供一种废气处理装置的絮凝装置，其构成为使用电晕放电来净化废气中的微粒，并能够提高废气中的微粒的絮凝性。解决方案：用于废气处理装置的絮凝装置1用于装备有充电部分2和絮凝部分4的废气处理装置中，并利用在充电部分2中产生的电晕放电来净化包含在来自内燃机的废气中的颗粒（PM）。布置在充电部2的排气流的下游侧的第一导电体41设置到絮凝部4，并且正电位施加到第一导电体41.版权所有（C）2006 ，JPO＆NCIPI

52. 发明专利

JP2003148280A FUEL INJECTION DEVICE 审中-公开
公开(公告)号：JP2003148280A
公开(公告)日：2003-05-21
申请号：JP2001341538
申请日：2001-11-07
申请人： DENSO CORP
发明人： KANO HIROYUKI , OKAJIMA MASAHIRO
IPC分类号： F02M51/06 , F02M61/16
摘要： PROBLEM TO BE SOLVED: To provide a fuel injection device capable of restricting the valve opening bounce of a valve member. SOLUTION: This fuel injection device is provided with a cylindrical movable core 14 housed in a valve body 11 freely to be moved for reciprocation integrally with the valve member and a cylindrical fixed core 12 having one end facing to one end of the movable core 14 in its downstream and having an outer peripheral wall tightly brought in contact with the inner peripheral wall of the valve body 11. The end 15 of the movable core 14 opposite to the fixed core 12 is formed with an annular projecting part 50 projected toward the fixed core 12 in the peripheral side of a cylindrical hole 54 and continued to the cylindrical hole 54 and a recessed part 52 more recessed than the projecting part 50 in the outer peripheral side of the projecting part 50 and continued to the outer peripheral wall of the opposite end 15. The distance dc of a clearance between the outer peripheral wall of the opposite end 15 and the inner peripheral wall of the valve body 11 is set at 15-25 μm.

53. 发明专利

JP2003106236A ELECTROMAGNETIC FUEL INJECTION VALVE 审中-公开
公开(公告)号：JP2003106236A
公开(公告)日：2003-04-09
申请号：JP2001297580
申请日：2001-09-27
申请人： DENSO CORP
发明人： OKAJIMA MASAHIRO , OGUMA YOSHITOMO
IPC分类号： F02M51/06
摘要： PROBLEM TO BE SOLVED: To provide an electromagnetic fuel injection valve capable of inhibiting the generation of open valve bounce without impairing the responding characteristic in rising and lowering of a valve element, and reducing the variation of the fuel injection quantity. SOLUTION: In this fuel injection valve 1 having a pipe 21, a fixed core 22, a movable core 23, a solenoid coil 24 and a needle valve 31, at least one of both toric end faces opposite to each other of the fixed core and the movable core is provided with an inner toric projection 239 and an outer toric projection 230 respectively at a center side and a centrifugal side through a radial central part. A speed in collision of the movable core with the fixed core is reduced by hydraulic damper action of an area defined by the inner toric projection, the outer toric projection, the movable core end face and the fixed core end face which can be raised when the movable core is sucked, whereby the open valve bounce can be inhibited.

54. 发明专利

JP2001263141A ELECTROMAGNETIC FUEL INJECTION DEVICE 失效
公开(公告)号：JP2001263141A
公开(公告)日：2001-09-26
申请号：JP2000072375
申请日：2000-03-15
申请人： DENSO CORP
发明人： OKAJIMA MASAHIRO
IPC分类号： F02M51/06 , F02D41/20 , F16K31/06
摘要： PROBLEM TO BE SOLVED: To reduce operating sound when a needle valve (valve element) is opened and driven and to suppress generation of secondary injection. SOLUTION: A current-carrying period to a second coil part 42 for driving a needle valve 21 of an injector (fuel injection valve) 10 in a valve closing direction is overlapped before termination of a current-carrying period to a first coil part 31 for driving the needle valve 21 in a valve opening direction and current-carrying to the second coil part 42 is stopped just before seating. As a result, valve closing responsiveness of the needle valve 21 can be improved and operating sound at the time of seating is reduced. Facing area with abutted movable core 22 and a second fixed core 41 and flow passage area of fuel in the vicinity of the downstream is set so as to be a fuel compressed state in a seating direction to the valve seat 12 of the needle valve 21, a hydraulic damper effect is obtained in the fuel compressed state and secondary injection from a nozzle hole part 13 to an internal combustion engine is suppressed.

55. 发明专利

JP2001165014A FUEL INJECTION DEVICE 失效
公开(公告)号：JP2001165014A
公开(公告)日：2001-06-19
申请号：JP34755599
申请日：1999-12-07
申请人： DENSO CORP
发明人： OKAJIMA MASAHIRO , ASAI SATORU
IPC分类号： F02M51/06 , F02M47/00 , F02M51/00
摘要： PROBLEM TO BE SOLVED: To provide a fuel injection device having high valve closing responsiveness at low costs. SOLUTION: When a valve opening driving pulse is turned on by a command of an ECU, current-carrying is carried out to a first coil part 31, a movable core 22 is attracted by a first fixed core 31, and a nozzle needle 21 is separated from a valve seat 13, and then, a valve is opened. When a valve closing driving pulse is turned on before a time TX than the valve closing driving pulse is turned on, current-carrying is carried out to a second coil part 42, and then, force for attracting the movable core 22 by the second fixed core 41 is generated. After valve closing is started, energizing force of a valve closing direction is rapidly increased, time delay from a time when valve closing is started to a time when the valve closing is completed, is suppressed, and thereby, valve closing responsiveness is improved.

56. 发明专利

JPH09189276A FUEL INJECTOR 失效
公开(公告)号：JPH09189276A
公开(公告)日：1997-07-22
申请号：JP210696
申请日：1996-01-10
申请人： DENSO CORP
发明人： OKAJIMA MASAHIRO , DATE KENJI
IPC分类号： F02M45/08 , F02M61/10
摘要： PROBLEM TO BE SOLVED: To provide a fuel injector which reduces harmful matter discharged in exhaust gas. SOLUTION: Fuel sent out from a high pressure fuel pump is led to flow from a passing hole 43 into a fuel pass 50. When fuel pressure in the fuel pass 50 becomes a first pressure value P1 or more, a small diametral cylindrical part 22 is elastically deformed on a diametral outside so as to form a first clearance in a first blocked part 51, and fuel injection from this first clearance is started. When fuel pressure in the fuel pass 50 becomes a second pressure value P2 or more which is larger than the first pressure value P1, a cylindrical part 32 is elastically deformed on a diametral outside so as to form a second clearance in a second blocked part 51, and fuel injection from the second clearance is started in addition to the fuel injection from the first clearance. Two- stage injection from the first and second clearances is thusly executed so that an initial injection rate can be suppressed, and an NOx can be reduced. The fuel injection from the first clearance is executed when only the fuel pressure becomes the first pressure value P1 or more, therefore, fuel can be atomized, and occurrence of a smoke can be suppressed.

57. 发明专利

JPH0949470A FUEL INJECTION VALVE 失效
公开(公告)号：JPH0949470A
公开(公告)日：1997-02-18
申请号：JP20229795
申请日：1995-08-08
申请人： DENSO CORP
发明人： DATE KENJI , KATO MASAAKI , KANO HIROYUKI , OKAJIMA MASAHIRO
IPC分类号： F02M61/18
摘要： PROBLEM TO BE SOLVED: To reduce a harmful substance discharged into exhaust gas and improve fuel consumption. SOLUTION: A sliding hole 40, having an internal diameter capable of sliding the second columnar part 38 of a needle 30 to be inserted through a nozzle body 18, is formed in a tip end of a seat part 28 positioned in an end part of the nozzle body 18. When an internal wall 28a of this sliding hole 40 is ground, by grinding the hole from its opening side before closed by a sack plug 20, grinding accuracy of the internal wall 28a can be improved. In this way, a clearance between the second columnar part 38 and the sliding hole 40 can be controlled to a degree of several μm, and when the second columnar part 38 is brought into sliding contact with the sliding hole 40, high pressure fuel, leaking from a guide hole 27 which is in the upstream of fuel into the sliding hole 40 which is in the downstream of fuel, can be prevented.

58. 发明专利

JP2006342730A EXHAUST PROCESSING SYSTEM OF INTERNAL COMBUSTION ENGINE 审中-公开
公开(公告)号：JP2006342730A
公开(公告)日：2006-12-21
申请号：JP2005169462
申请日：2005-06-09
申请人： DENSO CORP
发明人： OKAJIMA MASAHIRO
IPC分类号： F01N3/02
摘要： PROBLEM TO BE SOLVED: To realize a cohesive device capable of holding insulation with a simple constitution, without causing electric current leakage by a deposit of an exhaust particulate to an insulator part even in the presence of the exhaust particulate of the high concentration, in an exhaust processing system of an internal combustion engine using corona discharge. SOLUTION: A corona discharge electrode 2 and a conductive net 3 being a dust collecting electrode are oppositely arranged in an exhaust passage 11 of the cohesive device 1. The corona discharge electrode 2 has a discharge part 22 positioned in a substantially central part of the exhaust passage 11, a conductive part 21 introducing high voltage from an external power source to the discharge part 22, and the insulator part 23 holding the outer periphery of the conductive part 21. A Pt carrying part projecting in a ring shape is arranged on the outer periphery of the insulator part 23, and the insulation is held by removing the sticking exhaust particulate by the catalytic action of Pt included on at least its outside surface. COPYRIGHT: (C)2007,JPO&INPIT

59. 发明专利

JP2000303908A FUEL INJECTION VALVE 失效
公开(公告)号：JP2000303908A
公开(公告)日：2000-10-31
申请号：JP11237599
申请日：1999-04-20
申请人： DENSO CORP
发明人： OKAJIMA MASAHIRO
IPC分类号： F02M21/02
摘要： PROBLEM TO BE SOLVED: To provide a fuel injection valve to control a fuel injection amount with high precision even when a fuel injection amount is a small quantity. SOLUTION: In a state that a needle valve 20 seats a vale seat, an initial gap di between a fixed core 12 and a moving core 30, a distance between a spacer 14 and a stopper 23, namely a lift amount dl of a needle valve 20 are in a relation di>dl. Further, a formula of 165 μm

60. 发明专利

JPH1077892A ACCUMULATOR FUEL SYSTEM FOR VEHICLE 失效
公开(公告)号：JPH1077892A
公开(公告)日：1998-03-24
申请号：JP23334696
申请日：1996-09-03
申请人： DENSO CORP
发明人： KATO MASAAKI , FURUHASHI TSUTOMU , OKAJIMA MASAHIRO
IPC分类号： F02M37/00 , F02D41/22 , F02M47/00 , F02M47/02 , F02M55/02 , F02M63/00
摘要： PROBLEM TO BE SOLVED: To provide an accumulator type fuel system for an engine to perform running of an automobile based on the will of a driver when the actuator of a fuel feed system is failed in operation. SOLUTION: Fuel pumped up by a low pressure fuel feed pump 101 is brought into a high pressure by a high pressure fuel feed pump 104, a pressure is accumulated at a common rail 105 and pressure accumulated fuel is injected from an injector 106 to each cylinder of an engine. When at least one actuator selected from the high pressure fuel feed pump 104, an electromagnetic pressure regulator 112, or a pressure sensor 107 is failed in operation, an engine is controlled through control of the high pressure fuel feed pump 104 or an injector 106. Thus, The feed of fuel by the low pressure fuel feed pump 101 is ensured and running of an automobile is practicable through control of the discharge pressure of the high pressure fuel feed pump 104 or control of opening and closing by the injector 106.

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