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51. 发明专利

JPH051647A ELECTROMAGNETIC FUEL INJECTION VALVE 失效
公开(公告)号：JPH051647A
公开(公告)日：1993-01-08
申请号：JP15435591
申请日：1991-06-26
申请人： HITACHI LTD , HITACHI AUTOMOTIVE ENG
发明人： OKAMOTO YOSHIO , TANAKA NAOYUKI , KOSUGE TOKUO , SOMA MASAHIRO , KUROBA TSUNEMITSU
IPC分类号： F02M51/08 , F02F1/42 , F02M69/04
摘要： PURPOSE:To restrain adhesion of fuel on a suction port central bulkhead of an engine and to improve transient responsiveness by devising spray from a split means to be two-way spray without central spray. CONSTITUTION:The sectional area of a fuel passage 17 of a shaft center consisting of a plural number of fuel passages 18 of a split means 16 provided on positions symmetrical against the valve shaft center at least communicated through by a circular arc 19 is made gradually smaller from the upstream side toward the downstream side in an electromagnetic injection valve for a four-valve engine with the split means 16 to split fuel flow from a single spray hole.

52. 发明专利

JPH051645A ELECTROMAGNETIC FUEL INJECTION VALVE 失效
公开(公告)号：JPH051645A
公开(公告)日：1993-01-08
申请号：JP15435491
申请日：1991-06-26
申请人： HITACHI LTD , HITACHI AUTOMOTIVE ENG
发明人： OKAMOTO YOSHIO , TANAKA NAOYUKI , KOSUGE TOKUO , SOMA MASAHIRO , KUROBA TSUNEMITSU
IPC分类号： F02M51/08 , F02F1/42 , F02M69/04
摘要： PURPOSE:To furnish an electromagnetic fuel injection valve improving distribution performance of spray, reducing adhesion of fuel on a central wall of a suction valve of an engine and heightening driving efficiency of the engine. CONSTITUTION:A fuel passage 17 slightly larger than an injection hole 8 and a plural number of large diametrical fuel passages 18 communicated through to each other by a communicating wall 19 are biased against a valve shaft center in the direction opposite to the swirling fuel direction in an electromagnetic fuel injection valve for a four valve engine with a means 16 to split and supply swirling fuel flow from a single spray hole 8.

53. 发明专利

JPH04124461A SOLENOID TYPE FUEL INJECTION VALVE 失效
公开(公告)号：JPH04124461A
公开(公告)日：1992-04-24
申请号：JP24236290
申请日：1990-09-14
申请人： HITACHI LTD
发明人： KOSUGE TOKUO , ISHIKAWA SUSUMU
IPC分类号： F02M51/08 , F02M61/18
摘要： PURPOSE:To secure desirable fuel distributing performance by having the relation of 0.002

54. 发明专利

JPH0372827B2 失效
公开(公告)号：JPH0372827B2
公开(公告)日：1991-11-19
申请号：JP1941184
申请日：1984-02-07
申请人： HITACHI LTD
发明人： KOSUGE TOKUO
IPC分类号： F02D41/34 , F02D31/00 , F02D41/00 , F02D41/04 , F02D41/24 , F02D41/30

55. 发明专利

JPH03242459A ELECTROMAGNETIC FUEL INJECTION VALVE 失效
公开(公告)号：JPH03242459A
公开(公告)日：1991-10-29
申请号：JP3937290
申请日：1990-02-20
申请人： HITACHI LTD
发明人： ISHIKAWA TORU , KIDO TAKAYUKI , KOSUGE TOKUO , KONNO HITOSHI
IPC分类号： F02M51/08 , F02M61/18
摘要： PURPOSE:To facilitate work of a nozzle part even for a valve of small capacity so as to make high metering accuracy maintainable by constituting a nozzle surface up to a fuel injection orifice of a plurality of conical surfaces of which tapered angle is successively decreased including the orifice. CONSTITUTION:Shape of a nozzle surface 12A from the downstream of a valve seat 12 to a fuel injection orifice 11 is constituted of a plurality of conical surfaces of which tapered angle is successively decreased including the orifice 11. In this way, fuel, flowing in a nozzle 9, obtains a stable turning flow, and its stable region at this time is spread relating to a change of the tapered angle. As a result, exfoliation of a fuel flow, decrease of an injection amount by a temperature rise and vaporizing generated by a negative pressure in an intake pipe and decrease of the injection amount due to sticking of carbide by a backfire and of carbide in fuel are prevented. In the case of performing work of the nozzle surface 12A and the orifice 11, a permissible error can be set large, and high metering accuracy can be maintained by facilitating the work even for an injection valve of small capacity.

56. 发明专利

JPH02277749A SOLENOID VALVE FOR FUEL INJECTION AND ITS MATERIAL 失效
公开(公告)号：JPH02277749A
公开(公告)日：1990-11-14
申请号：JP9734089
申请日：1989-04-19
申请人： HITACHI LTD
发明人： SANO MASAAKI , NARUSHIGE SHINJI , NAKAGAWA YUSAKU , KAMITSUMA YASUO , KOSUGE TOKUO , TERAKADO KAZUYOSHI
IPC分类号： F02M51/06 , C22C38/00 , C22C38/18 , F16K31/06 , H01F7/06 , H01F7/08
摘要： PURPOSE:To obtain the solenoid valve for fuel injection of high capacity having excellent high speed responsibility by applying an electrical stainless steel of specified compsn. having prescribed electromagnetic characteristics and easy to execute cold forging to magnetic circuit parts of an injection valve. CONSTITUTION:The stock which is an electrical stainless steel constituted of, by weight, 8 to 12% Cr, 0.5 to 1.5% Si, 0.5 to 2% Al and the balance Fe with a few impurities as well as 1 to 3% Al+Si, having a uniform ferrite structure and furthermore having the following electromagnetic characteristics is prepd. As the electromagnetic characteristics, >=70muOMEGA.cm electric resistance, =1.25 tesla magnetic flux density in 25 oersted magnetizing force are regulated. By using the above stock, magnetic circuit parts of a yoke 1, a core 2 and a plunger 3 are manufactured by cold forging and are incorporated into an injection valve. As the stock for the above parts before subjected to cold forging, the one in which grain size is regulated to the range of No.4 to 7 in size number by thermal refining treatment, elongation to >=40%, reduction of area to >=75% and transition temp. to the cold forging temp. or below is used.

57. 发明专利

JPH02163462A SOLENOID OPERATED FUEL INJECTION VALVE 失效
公开(公告)号：JPH02163462A
公开(公告)日：1990-06-22
申请号：JP31642388
申请日：1988-12-16
申请人： HITACHI LTD , HITACHI AUTOMOTIVE ENG
发明人： SOMA MASAHIRO , KOSUGE TOKUO
IPC分类号： F02M51/06 , F02M51/08 , F02M61/18 , F02M69/00
摘要： PURPOSE:To supply two intake valves with such a spray as excellent in atomization by using an upstream swirling type injector provided with a swirler, giving swirling force to fuel, at the seal part upstream, and installing a wall, consisting of four symmetrical planes holding an orifice between, in the orifice downstream of a nozzle. CONSTITUTION:Fuel is sprayed when a coil 16 is excited by a valve opening signal out of a control unit, a plunger 9 is attracted to the side of a core 7 and a seat part consisting of a ball valve and a seat surface 12 of a nozzle 1 is opened. The fuel being sprayed is given swirling force by a swirler 18 at the seat part upstream, and the fuel discharged out of an orifice 19 turns to a hollow conic spray but a part of the fuel discharged out of the orifice 19 flows along four planes 21-24 of a two-way split member 20, whereby a spray direction toward directions 21'-24' is regulated, and it is thus it is dividedly sprayed in two directions. Here the fuel being sprayed toward each interval between planes 21 and 23, 22 and 24 will not receive this plane regulation, and it comes to a spray angle dependent upon the swirling force by the swirler 18 and a diameter of the prifice 19.

58. 发明专利

JPS6354900B2 失效
公开(公告)号：JPS6354900B2
公开(公告)日：1988-10-31
申请号：JP4227083
申请日：1983-03-16
申请人： HITACHI LTD
发明人： KANO KOJI , KOSUGE TOKUO , YAMADA KINSAKU , URUSHIBARA HISASHI , TOMOSAKI RYOZO , TSURUOKA KAZUHIRO , TERASAKI AKIRA , KIDO TAKAYUKI , AOCHI YOSHIKAZU
IPC分类号： F02M51/08 , F02M51/06 , F02M61/04 , F02M61/18

59. 发明专利

JPS63235777A SOLENOID-CONTROLLED FUEL INJECTION VALVE 失效
公开(公告)号：JPS63235777A
公开(公告)日：1988-09-30
申请号：JP6560987
申请日：1987-03-23
申请人： HITACHI LTD
发明人： KOSUGE TOKUO
IPC分类号： F02M51/08 , F16K31/06
摘要： PURPOSE:To effectively eliminate air bubbles left behind in the inner part of a fuel injection valve at time of a hot start, by making a sufficient pressure differential so as to be secured between a fuel feeding port and a fuel return port. CONSTITUTION:Owing to the pressure of a partition device 23, a fuel supply system passage at time of operation of a fuel injection valve is constituted of an empty space 16a in a passage space 16. On the other hand, a fuel return system passage is constituted of only one system of fuel return passages 1 and 19 and empty space 16b, whereby such a possibility that a fuel feeding port 4 and a fuel return port 15 are interconnected to each other via the space 16 will never happen. Consequently, if partitioning action of the partition device 23 and an area of the fuel supply system passage are made sufficiently larger than that of the fuel return system passage, fuel pressure at the side of the fuel feeding port 14 comes high, so that a sufficient pressure differential is securable.

60. 发明专利

JPS6326271B2 失效
公开(公告)号：JPS6326271B2
公开(公告)日：1988-05-28
申请号：JP3612480
申请日：1980-03-24
申请人： HITACHI LTD
发明人： KOSUGE TOKUO , ATAGO TAKESHI
IPC分类号： F02D41/16 , F02D9/02 , F02D29/02 , F02D35/00 , F02D41/06

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