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1. 发明专利

JP2003278624A Fuel injection device 审中-公开
标题翻译：燃油喷射装置
公开(公告)号：JP2003278624A
公开(公告)日：2003-10-02
申请号：JP2002078133
申请日：2002-03-20
申请人： Denso Corp , 株式会社デンソー
发明人： KANO HIROYUKI , SUGIURA SHINJI
IPC分类号： F02M55/02
摘要： PROBLEM TO BE SOLVED: To provide a fuel injection device capable of reducing pressure pulsation of a high pressure fuel system in an internal combustion engine having a plurality of common rails in structure.
SOLUTION: This device is provided with a multicyliner internal combustion engine 100 having a bank 111 in which a group of cylinders L1 to L3 and R1 to R3 is arranged, an injector 28 provided for every cylinder of the internal combustion engine 100, the common rails 29 for accumulating high pressure fuel to be supplied to the injector 28, and a high pressure pump 54 for discharging high pressure fuel to the common rails 29. The common rails 29 (29a and 29b) are arranged for every bank 111a and 111b. A fuel supply passage 33 for supplying high pressure fuel to the common rails 29a and 29b from the high pressure pump 54 is connected to each of the common rails 29a and 29b in parallel.
COPYRIGHT: (C)2004,JPO
摘要翻译：解决问题的方案：提供一种燃料喷射装置，其能够降低具有多个共轨的内燃机中的高压燃料系统的压力脉动。解决方案：该装置设置有多列车内燃机100，其具有其中布置有一组缸体L1至L3和R1至R3的堤岸111，为内燃机100的每个气缸设置的喷射器28，用于积存供给喷射器28的高压燃料的公共轨道29以及用于将高压燃料排放到公共轨道29的高压泵54.公用轨道29（29a和29b）布置在每个堤岸111a和 111b。用于从高压泵54向共用导轨29a，29b供给高压燃料的燃料供给路33与各个共轨29a，29b并联连接。版权所有（C）2004，JPO

2. 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.

3. 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.

4. 发明专利

JP2003184700A HIGH PRESSURE FUEL PUMP 审中-公开
公开(公告)号：JP2003184700A
公开(公告)日：2003-07-03
申请号：JP2001389428
申请日：2001-12-21
申请人： DENSO CORP
发明人： KANO HIROYUKI , INOUE HIROSHI , OGURI TATSUMI
IPC分类号： F02M37/06 , F02M37/08 , F02M51/04 , F02M59/10 , F02M59/46
摘要： PROBLEM TO BE SOLVED: To provide a high pressure pump capable of sucking enough fuel to a plunger chamber even when a three-thread cam is operated at high speed. SOLUTION: In this high pressure fuel pump, a cam (230) driving a plunger (220) is a three-thread cam having three cam profiles on the periphery for deciding a lift volume per one reciprocating movement of a plunger according to a rotation angle. The cam profiles are asymmetric cam profiles, with an up stroke profile and a down stroke profile asymmetric. In the down stroke profile, a maximum down speed cam angle (QVmax), which is a cam angle with maximum down speed is in a range of 90 to 110 degrees from a starting point of the up stroke profile. COPYRIGHT: (C)2003,JPO

5. 发明专利

JPH1172053A FUEL SUPPLY DEVICE 失效
公开(公告)号：JPH1172053A
公开(公告)日：1999-03-16
申请号：JP23407597
申请日：1997-08-29
申请人： DENSO CORP
发明人： OKAJIMA MASAHIRO , KATO MASAAKI , KANO HIROYUKI , FURUHASHI TSUTOMU
IPC分类号： F02M37/00 , F02M55/00 , F02M55/02 , F02M55/04 , F02M63/02
摘要： PROBLEM TO BE SOLVED: To reduce pressure pulsation generated in association with the operation of a pressure regulator. SOLUTION: The condition S1

6. 发明专利

JPH0932687A FUEL INJECTION DEVICE 失效
公开(公告)号：JPH0932687A
公开(公告)日：1997-02-04
申请号：JP17732295
申请日：1995-07-13
申请人： DENSO CORP
发明人： DATE KENJI , KATO MASAAKI , KANO HIROYUKI , OKAJIMA MASAHIRO
IPC分类号： F02M45/00 , F02M47/00 , F02M47/02 , F02M61/10 , F02M61/18
摘要： PROBLEM TO BE SOLVED: To reduce a harmful matter discharged into exhaust air and to improve fuel economy. SOLUTION: A second nozzle needle 25 is stored in a hollow and cylindrical first nozzle needle 20. When high pressure fuel in a first pressure control chamber is discharged, the first nozzle needle 20 lifts and high pressure fuel supplied from a common rail is injected from a first nozzle hole 31. When a shim 35 is engaged with an end surface 27a of the second nozzle needle 25 while the first nozzle needle 20 lifts, the second nozzle needle 25 lifts with the first nozzle needle 20, fuel is also injected from a second nozzle hole 32 in addition to the first nozzle hole 31. As the second nozzle needle 25 lifts in accordance with lift of the first nozzle needle 20, it is possible to increase initial injection pressure while reducing an initial injection rate.

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