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1. 发明专利

DE19828672A1 Electromagnetic fuel injection valve 未知
公开(公告)号：DE19828672A1
公开(公告)日：1999-01-07
申请号：DE19828672
申请日：1998-06-26
申请人： HITACHI LTD , HITACHI CAR ENG CO LTD
发明人： YAMAKADO MAKOTO , OKAMOTO YOSHIO , ARAI NOBUKATSU , KADOMUKAI YUZO , TANABE YOSHIYUKI , HAMADA YASUNAGA , NAMAIZAWA YASUO , KUBO HIROMASA , TABUCHI KENJI
IPC分类号： F02D41/20 , F02M51/00 , F02M51/06 , F02M51/08 , F16K31/06
摘要： The valve (10) has a valve seat (19) with a valve element (16) to open and shut the fuel path between the valve seat and element. The valve drive unit has a coil (11) to provide a magnetomotive force. The second drive unit has a permanent magnet, a coil or a second coil having a larger number of windings than the first coil. A constant current flows during the period when the valve is open and also while the valve is closed. The first coil provides a higher magnetomotive force with a higher temporal rate of change than the second coil. The valve element (16) is held open by the second appts (12) when using a current flow that is smaller than the flow through the first appts.

2. 发明专利

DE60026640T2 未知
公开(公告)号：DE60026640T2
公开(公告)日：2007-02-08
申请号：DE60026640
申请日：2000-07-27
申请人： HITACHI LTD , HITACHI CAR ENG CO LTD
发明人： YAMAKADO MAKOTO , TANABE YOSHIYUKI , TAKAHATA TOSHIO , KUBO HIROMASA , HAMADA YASUNAGA , OKAMOTO YOSHIO , KADOMUKAI YUZO
IPC分类号： F02D41/20 , F02M51/00 , F02D41/04

3. 发明专利

DE60035804T2 未知
公开(公告)号：DE60035804T2
公开(公告)日：2008-04-30
申请号：DE60035804
申请日：2000-03-08
申请人： HITACHI LTD , HITACHI CAR ENG CO LTD
发明人： HAMADA YASUNAGA , NAMAIZAWA YASUO
IPC分类号： F02M51/06 , F02D41/20 , F02M51/00 , F02M55/00 , F02M61/16 , F02M63/00
摘要： In an electromagnetic fuel injector of an internal combustion engine, an electromagnetic coil for valve driving is to be wound on a bobbin, and the bobbin is constituted by a synthetic resin containing a filler having good heat conductivity. For example, the bobbin with the coil to be wound thereon is constituted by PPS containing iron oxide and/or alumina as a filler. Two types of electromagnetic coils different in characteristics are provided in the fuel injector. These coils are wound separately on one bobbin in an axial direction. Among them, one coil (hereinafter referred to as "first coil") has a winding region near a movable unit with a valve element being the object of magnetic suction, and other coil (hereinafter referred to as "second coil") has a winding region away from the movable unit. The bobbin has a step difference of the outer diameter so that the bobbin outer diameter in the region with the second coil to be wound thereon is smaller than the bobbin outer diameter in the region with the first coil to be wound thereon, and the bobbin inner diameter has a step difference in that the bobbin inner diameter in the region with the first coil to be wound thereon is made large partially so as to secure an annular space to interpose a seal ring therein.

4. 发明专利

DE60035804D1 未知
公开(公告)号：DE60035804D1
公开(公告)日：2007-09-13
申请号：DE60035804
申请日：2000-03-08
申请人： HITACHI LTD , HITACHI CAR ENG CO LTD
发明人： HAMADA YASUNAGA , NAMAIZAWA YASUO
IPC分类号： F02M51/06 , F02D41/20 , F02M51/00 , F02M55/00 , F02M61/16 , F02M63/00
摘要： In an electromagnetic fuel injector of an internal combustion engine, an electromagnetic coil for valve driving is to be wound on a bobbin, and the bobbin is constituted by a synthetic resin containing a filler having good heat conductivity. For example, the bobbin with the coil to be wound thereon is constituted by PPS containing iron oxide and/or alumina as a filler. Two types of electromagnetic coils different in characteristics are provided in the fuel injector. These coils are wound separately on one bobbin in an axial direction. Among them, one coil (hereinafter referred to as "first coil") has a winding region near a movable unit with a valve element being the object of magnetic suction, and other coil (hereinafter referred to as "second coil") has a winding region away from the movable unit. The bobbin has a step difference of the outer diameter so that the bobbin outer diameter in the region with the second coil to be wound thereon is smaller than the bobbin outer diameter in the region with the first coil to be wound thereon, and the bobbin inner diameter has a step difference in that the bobbin inner diameter in the region with the first coil to be wound thereon is made large partially so as to secure an annular space to interpose a seal ring therein.

5. 发明专利

DE69927117T2 未知
公开(公告)号：DE69927117T2
公开(公告)日：2006-06-22
申请号：DE69927117
申请日：1999-12-27
申请人： HITACHI LTD , HITACHI CAR ENG CO LTD
发明人： YAMAKADO MAKOTO , OKAMOTO YOSHIO , KADOMUKAI YZO , TANABE YOSHIYUKI , KUBO HIROMASA , TAKAHATA TOSHIO , TABUCHI KENJI , HAMADA YASUNAGA
IPC分类号： F02M51/00 , F02M51/06 , F02D41/20 , F02D41/22 , F16K31/06

6. 发明专利

DE19812092A1 Fuel injection unit for IC engine with nozzle body 未知
公开(公告)号：DE19812092A1
公开(公告)日：1998-09-24
申请号：DE19812092
申请日：1998-03-19
申请人： HITACHI LTD , HITACHI CAR ENG CO LTD
发明人： OKAMOTO YOSHIO , KADOMUKAI YZO , TANABE YOSHIYUKI , HAMADA YASUNAGA
IPC分类号： F02M51/06 , F02M61/16 , F02M63/02 , F02M69/04
摘要： The fuel injection unit has a nozzle body (7) with an injection bore (8), a valve body (5) also a drive unit, which contains the valve body driven axially. So that the valve body opens and closes the injection bore (8, figure 1B) for the injection of fuel. Two turbulence force acting units (22B,22D, figure 2A) are provided on the inlet side of the injection bore. Turbulence forces act axially on the fuel successively by the two force units (22B,22D). The turbulence force, which is exerted by the first turbulence force acting unit (22B) is different from the turbulence force which is exerted by the second turbulence force acting unit (22D). As a result, the fuel injection is carried out with a stable, cone shaped spray jet.

7. 发明专利

DE60026640D1 未知
公开(公告)号：DE60026640D1
公开(公告)日：2006-05-11
申请号：DE60026640
申请日：2000-07-27
申请人： HITACHI LTD , HITACHI CAR ENG CO LTD
发明人： YAMAKADO MAKOTO , TANABE YOSHIYUKI , TAKAHATA TOSHIO , KUBO HIROMASA , HAMADA YASUNAGA , OKAMOTO YOSHIO , KADOMUKAI YUZO
IPC分类号： F02D41/20 , F02M51/00 , F02D41/04

8. 发明专利

DE69927117D1 未知
公开(公告)号：DE69927117D1
公开(公告)日：2005-10-13
申请号：DE69927117
申请日：1999-12-27
申请人： HITACHI LTD , HITACHI CAR ENG CO LTD
发明人： YAMAKADO MAKOTO , OKAMOTO YOSHIO , KADOMUKAI YZO , TANABE YOSHIYUKI , KUBO HIROMASA , TAKAHATA TOSHIO , TABUCHI KENJI , HAMADA YASUNAGA
IPC分类号： F02M51/00 , F02D41/20 , F02D41/22 , F02M51/06 , F16K31/06

9. 发明公开

EP1270926A4 ELECTROMAGNETIC TYPE FUEL INJECTION VALVE 有权
标题翻译：布鲁塞尔布里斯本
公开(公告)号：EP1270926A4
公开(公告)日：2005-03-16
申请号：EP00907939
申请日：2000-03-08
申请人： HITACHI LTD , HITACHI CAR ENG CO LTD
发明人： HAMADA YASUNAGA , NAMAIZAWA YASUO
IPC分类号： F02D41/20 , F02M51/00 , F02M51/06 , F02M55/00 , F02M61/16 , F02M63/00
CPC分类号： F02M51/0682 , F02D41/20 , F02D2041/2017 , F02D2041/2079 , F02M51/005 , F02M51/0617 , F02M51/0621 , F02M51/0671 , F02M51/0678 , F02M55/004 , F02M61/165 , F02M61/168 , F02M2200/505 , F02M2200/9015
摘要： In an electromagnetic type fuel injection valve for internal combustion engines, a valve-driving electromagnetic coil bobbin (15) is made of a synthetic resin containing a filler having good thermal conductivity. The electromagnetic coil includes two kinds of coils (12, 13), different in characteristics from each other, that are axially-separately wound on one bobbin (15). One coil (12) is wound on the bobbin (15) such that it is closer to a movable element (19) than the other coil (13), and the outer diameter of the bobbin in the region where the other coil (13) is wound is smaller than the outer diameter of the bobbin in the region where one coil (12) is wound. Further, the inner diameter of the bobbin in the region where one coil (12) is wound has a level difference to form an annular space in which a seal ring (18) is disposed. The two kinds of coils (12, 13) are connected to a power supply and a switching element through a three-terminal connector.
摘要翻译：在内燃机的电磁燃料喷射器中，将用于阀驱动的电磁线圈卷绕在线轴上，线轴由含有导热性良好的填料的合成树脂构成。例如，其上缠绕有线圈的线轴由含有氧化铁和/或氧化铝作为填料的PPS构成。在燃料喷射器中设置两种不同特性的电磁线圈。这些线圈在一个线轴上沿轴向分开缠绕。其中，一个线圈（以下称为“第一线圈”）具有在作为磁吸引对象的阀元件的可动单元附近的绕组区域，其他线圈（以下称为“第二线圈”）具有绕组区域远离可移动单元。线轴具有外径的台阶差，使得在其上缠绕有第二线圈的区域中的线轴外径小于在其上缠绕第一线圈的区域中的线轴外径，并且线轴内径直径有一个台阶差，其中具有要卷绕在其上的第一线圈的区域中的线轴内径被大部分地制成，以便确保环形空间以将密封环插入其中。

10. 发明专利

DE602006002677D1 未知
公开(公告)号：DE602006002677D1
公开(公告)日：2008-10-23
申请号：DE602006002677
申请日：2006-07-28
申请人： HITACHI LTD , HITACHI HIGH TECH CORP , BABCOCK HITACHI KK
发明人： NISHIOKA AKIRA , AMOU KIYOSHI , SUKEGAWA YOSHIHIRO , KOWATARI TAKEHIKO , HAMADA YASUNAGA , HAMADA IKUHISA , MUKAI TOSHIFUMI , TAGUCHI YOSHINORI , YOKOTA HIROSHI
IPC分类号： F01N3/20 , B01D53/86
摘要： An exhaust aftertreatment system comprises an injector for injecting urea water into an exhaust duct, and a denitration catalyst disposed downstream of the injector with respect to a flow of exhaust gas 1. The exhaust aftertreatment system reduces nitrogen oxides in the exhaust gas 1 by the denitration catalyst 6 while using ammonia produced from the urea water injected from the injector 10. The urea water is injected along a direction of the flow of the exhaust gas within the exhaust duct 3, and a porous plate 12 is disposed in multiple stages in a space of the exhaust duct such that droplets of the injected urea water impinge against the porous plate 12 before reaching a wall surface of the exhaust duct 3. A surface of the porous plate 12 subjected to the impingement of the droplets is arranged to face downstream with respect to the flow of the exhaust gas 1. Deposition of the urea water is prevented by causing film boiling when the droplets impinge against the porous plate 12, and the urea water reflected by the porous plate 12 is uniformly dispersed into the exhaust gas 1. Thus, the urea water is uniformly dispersed into the exhaust gas 1 without increasing a pressure loss of the exhaust gas 1. The urea water is prevented from depositing on the wall surface and producing a precipitate in the form of a solid.

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