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41. 发明专利

JPH09317594A FUEL FEED DEVICE 失效
公开(公告)号：JPH09317594A
公开(公告)日：1997-12-09
申请号：JP19353596
申请日：1996-07-23
申请人： DENSO CORP
发明人： YAMAMOTO KAZUO , SUGAYA KAZUYOSHI , OTA NOBUO , WATANABE MASAHARU , ITO YOSHIHIKO
IPC分类号： F02M47/00 , F02M51/00 , F02M55/02
摘要： PROBLEM TO BE SOLVED: To improve startability of an engine, and also control fuel pressure in a fuel feed system with high accuracy. SOLUTION: A pressure limitter 10 is installed on a common rail, and a needle valve 15 is housed in a valve body 12 freely to carry out reciprocating motion. A movable core 22 is supported on a housing freely to carry out reciprocating motion, and energized in the valve seat direction of the needle valve 15 by a spring 34. When a driving signal of a coil 35 is turned on, the movable core 22 is attracted to a fixed core 21 against energizing force of the spring 34, the needle valve 15 is separated from a valve seat 12a, and fuel is discharged from an accumulating chamber. The pressure limitter 10 is opened forcibly at the time of engine start, and air in the accumulating chamber and vapor fuel is discharged rapidly, and thereby, it is possible to improve startability of the engine.

42. 发明专利

JPH1182237A FUEL SUPPLY DEVICE 失效
公开(公告)号：JPH1182237A
公开(公告)日：1999-03-26
申请号：JP24082297
申请日：1997-09-05
申请人： DENSO CORP
发明人： INAGUMA SADATSUGU , INOUE HIROSHI , OTA NOBUO
IPC分类号： F02M51/00 , F02M55/00 , F02M59/44
摘要： PROBLEM TO BE SOLVED: To increase a fuel delivery amount for every specific time with a simple structure without being enlarged. SOLUTION: A fuel intake passage 31 connects through an circular fuel chamber 25. A fuel intake passage 32 connects through a fuel pressurizing chamber 15, and a check valve 40 is provided at the fuel intake passage 32. In a fuel intake process, when a plunger 13 lowers to a bottom dead center, a low pressure fuel is sucked in the fuel pressurizing chamber 15 from two lines; from a circular fuel chamber 25 through an opening of a valve member 21 and valve seat 24, and through the fuel intake passage 32. In a fuel pressurizing process, when the plunger 13 rises, the check valve 40 closes, and a fuel in the fuel pressurizing chamber 15 is pressurized as the plunger 13 rises. Therefore, a required fuel quantity per one intake process is sucked to increase a fuel injecting quantity per specific time even a number of cam teeth is increased to increase a reciprocating speed of the plunger 13.

43. 发明专利

JPH1182799A SOLENOID VALVE AND MANUFACTURE THEREOF 失效
公开(公告)号：JPH1182799A
公开(公告)日：1999-03-26
申请号：JP24908897
申请日：1997-09-12
申请人： DENSO CORP
发明人： YAMAMOTO KAZUO , OTA NOBUO
IPC分类号： F02M51/00 , F02M51/02 , F02M51/06 , F16K31/06
摘要： PROBLEM TO BE SOLVED: To integrate a movable core with a needle without increasing a size of a solenoid valve body or deteriorating assembly workability. SOLUTION: A fixed iron core 1 and a fixed iron core 2 provided in the tip with a movable iron core sliding hole 21 constitute an electromagnetic linear actuator with a movable iron core 4, a coil 32, and a return spring 72, and a valve body 8 is fixed to the iron cores 1, 2. In addition, a valve element 5 is held in a valve hole 81 of the valve body 8 freely slidably in the axial direction, while the movable iron core 4 fixed to the valve element 5 is held in the movable iron core sliding hole 21 of the fixed iron core 2 freely slidably in the axial direction. The diameter of the movable iron core sliding hole 21 connected to the valve hole 81 coaxially is restricted to that of the valve hole 81 or less. In this way, after production of a movable unit, which is formed by firmly fixing the movable iron core 4 to the valve element 5 by means of welding and the like, the movable unit can be assembled when it is inserted into the valve hole 81 of the valve body 8 and the movable iron core sliding hole 21 of the fixed iron core 2.

44. 发明专利

JPH1182225A MANUFACTURE OF SOLENOID VALVE AND FUEL FEEDER USED THEREWITH 失效
公开(公告)号：JPH1182225A
公开(公告)日：1999-03-26
申请号：JP24907797
申请日：1997-09-12
申请人： DENSO CORP
发明人： YAMAMOTO KAZUO , OTA NOBUO
IPC分类号： F02M51/00 , F02M51/02 , F02M51/06 , F16K31/06
摘要： PROBLEM TO BE SOLVED: To facilitate assembling operations without entailing any drop in the rigidity of a stopper plate as well as imparting any hindrance to a fluid flow. SOLUTION: An opening 53 of a fluid passage being communicates with a valve hole is formed on a peripheral surface of a valve body 8 to be locked to a fixed iron core 2, and this opening 53 is surroundedly covered by a filter to be clamped to the fixed iron core 2 or the valve body 8. In this constitution, such a structure that a stopper plate 700 is held by this filter 9 is adopted in particular. If doing suchlike, a problem of positional dislocation of this stopper plate is resolvable without incurring any structural complication and an increment in the number of part items.

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