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1. 发明专利

GB2288852B High pressure fuel supply pump 未知
公开(公告)号：GB2288852B
公开(公告)日：1998-04-22
申请号：GB9508481
申请日：1995-04-26
申请人： NIPPON DENSO CO
发明人： OKAJIMA MASAHIRO , YAMAMOTO KAZUO , INOUE HIROSHI , KATOU MASAAKI , KANO HIROYUKI
IPC分类号： F01L1/04 , F01L1/053 , F02F7/00 , F02M39/02 , F02M47/00 , F02M51/00 , F02M59/10 , F02M59/20 , F02M59/36 , F02M59/44 , F02M63/02 , F02M69/00
摘要： A high pressure fuel supply pump comprises a cylinder, the upper part of which is exposed to the outside of a head cover that is a part of the engine housing, and is fixed to the head cover by means of bolts, not shown. The remaining portion of the high pressure fuel supply pump is received in an accommodation hole of the head cover. A pump cam 111 is mounted to a valve camshaft for driving a suction/exhaust valve and drives the high pressure fuel supply pump. The use of an exclusive shaft for pump driving only, a bearing member therefor, and the like is rendered unnecessary, which enables a reduction in the number of parts employed. Further, since the timing with which the pressurized fuel is discharged is controlled through the operation of a solenoid valve, the precision with which fuel injection is controlled is improved.

2. 发明专利

DE3885689D1 未知
公开(公告)号：DE3885689D1
公开(公告)日：1993-12-23
申请号：DE3885689
申请日：1988-09-16
申请人： NIPPON DENSO CO
发明人： MIYAKI MASAHIKO , KANAMORI HIROYASU DAIICHI SHIN , YAMAMOTO YOSHIHISA , KANO HIROYUKI , KUMANO MIKIO , KONDOH SHIGEYUKI
IPC分类号： F02B3/06 , F02D41/38 , F02M59/36 , F02M59/46 , F02M63/02 , F02M59/08
摘要： A variable discharge high pressure pump (7) for pumping a fuel into a common rail (4) of a common rail type fuel injection system has a plunger (15) reciprocable in a cylinder bore and a pumping chamber (16) defined between and end face of the plunger and the inner peripheral surface of the cylinder bore. A solenoid valve (30) has a valve member (38) movable into an open position in which the valve member is moved out of engagement with an associated valve seat (37) into the pumping chamber when the solenoid valve is deenergized. When the solenoid valve is energized, the valve member is moved into a closed position in which the fuel pressure in the pumping chamber acts on the valve member to urge the same into engagement with the valve seat. The plunger (15) is of a simple cylinderical structure free from any lead formed therein.

3. 发明专利

DE19515191A1 未知
公开(公告)号：DE19515191A1
公开(公告)日：1995-11-02
申请号：DE19515191
申请日：1995-04-25
申请人： NIPPON DENSO CO
发明人： OKAJIMA MASAHIRO , YAMAMOTO KAZUO , INOUE HIROSHI , KATOU MASAAKI , KANO HIROYUKI
IPC分类号： F01L1/04 , F01L1/053 , F02F7/00 , F02M39/02 , F02M47/00 , F02M51/00 , F02M59/10 , F02M59/20 , F02M59/36 , F02M59/44 , F02M63/02 , F02M69/00 , F04B1/00
摘要： The pump plunger 43 is reciprocated by a cam 111 on the camshaft (110, Fig. 5) operating the engine inlet and exhaust valves and the pump is located in the engine valve gear cover 100 or the cylinder head (130, Fig. 7). The timing of pump delivery to an accumulator rail is determined by closing of a solenoid-operated valve 23 at one end of the plunger bore 16. Two pumps 10 may supply respective engine cylinders. The plunger tappet 41 or the plunger 43 may be directly guided in the valve gear cover (Figs. 9 and 17).

4. 发明专利

DE3885689T2 未知
公开(公告)号：DE3885689T2
公开(公告)日：1994-03-24
申请号：DE3885689
申请日：1988-09-16
申请人： NIPPON DENSO CO
发明人： MIYAKI MASAHIKO , KANAMORI HIROYASU DAIICHI SHIN , YAMAMOTO YOSHIHISA , KANO HIROYUKI , KUMANO MIKIO , KONDOH SHIGEYUKI
IPC分类号： F02B3/06 , F02D41/38 , F02M59/36 , F02M59/46 , F02M63/02 , F02M59/08
摘要： A variable discharge high pressure pump (7) for pumping a fuel into a common rail (4) of a common rail type fuel injection system has a plunger (15) reciprocable in a cylinder bore and a pumping chamber (16) defined between and end face of the plunger and the inner peripheral surface of the cylinder bore. A solenoid valve (30) has a valve member (38) movable into an open position in which the valve member is moved out of engagement with an associated valve seat (37) into the pumping chamber when the solenoid valve is deenergized. When the solenoid valve is energized, the valve member is moved into a closed position in which the fuel pressure in the pumping chamber acts on the valve member to urge the same into engagement with the valve seat. The plunger (15) is of a simple cylinderical structure free from any lead formed therein.

5. 发明专利

DE4039520A1 未知
公开(公告)号：DE4039520A1
公开(公告)日：1991-07-04
申请号：DE4039520
申请日：1990-12-11
申请人： NIPPON DENSO CO
发明人： KATO MASAAKI , KANO HIROYUKI , OKAJIMA MASAHIRO , NARAHARA YOSHIHIRO , KOJIMA TERUTADA , TOJO SHIGEKI
IPC分类号： F02M61/10 , F02M61/16 , F02M61/18
摘要： A fuel injection valve of a diesel engine, comprising a valve body including a concave conical surface in the tip portion of the valve body, and fuel injection holes extending from the concave surface to the outside of the valve body, and a needle valve movable in the valve body and including a cylindrical shaft portion, a first conical surface adjacent to the shaft portion and having a conical angle smaller than that of the concave surface, the lower edge of the first conical surface defining a contact line separably contacting with the concave surface, a second conical surface adjacent to the first surface and having a conical angle substantially equal to that of the concave surface, a third conical surface adjacent to the second surface and having a conical angle greater than that of the concave surface. In case of a smaller lift amount of the needle valve, the fuel flow speed flowing into the fuel injection hole is fast and the atomized fuel injection divergence angle from the injection hole is great, thereby producing active producing mixing of the fuel with the air and enhancing the ignition feature, while in case of a greater lift amount, the fuel flow speed is slow and the atomized fuel injection divergence angle from the injection hole is small, thereby increasing the fuel flow reach and producing an active mixing of the fuel with the air by virtue of the kinetic energy of the atomized fuel flow.

6. 发明专利

GB2288852A Mounting high pressure fuel pumps on i.c.engines 未知
公开(公告)号：GB2288852A
公开(公告)日：1995-11-01
申请号：GB9508481
申请日：1995-04-26
申请人： NIPPON DENSO CO
发明人： OKAJIMA MASAHIRO , YAMAMOTO KAZUO , INOUE HIROSHI , KATOU MASAAKI , KANO HIROYUKI
IPC分类号： F01L1/04 , F01L1/053 , F02F7/00 , F02M39/02 , F02M47/00 , F02M51/00 , F02M59/10 , F02M59/20 , F02M59/36 , F02M59/44 , F02M63/02 , F02M69/00
摘要： A high pressure fuel supply pump comprises a cylinder, the upper part of which is exposed to the outside of a head cover that is a part of the engine housing, and is fixed to the head cover by means of bolts, not shown. The remaining portion of the high pressure fuel supply pump is received in an accommodation hole of the head cover. A pump cam 111 is mounted to a valve camshaft for driving a suction/exhaust valve and drives the high pressure fuel supply pump. The use of an exclusive shaft for pump driving only, a bearing member therefor, and the like is rendered unnecessary, which enables a reduction in the number of parts employed. Further, since the timing with which the pressurized fuel is discharged is controlled through the operation of a solenoid valve, the precision with which fuel injection is controlled is improved.

7. 发明专利

JPH088429A SEMICONDUCTOR DEVICE 失效
公开(公告)号：JPH088429A
公开(公告)日：1996-01-12
申请号：JP14056494
申请日：1994-06-22
申请人： NIPPON DENSO CO , TOYOTA CENTRAL RES & DEV
发明人： NAITO MASAMI , TOKURA NORIHITO , KANO HIROYUKI , FUMA HIROO , HAYASHI HIDEMITSU , MIWA KAZUTOSHI
IPC分类号： C01B31/36 , H01L29/04 , H01L29/12 , H01L29/78
摘要： PURPOSE:To lower on-resistance by making the carrier moving direction of a channel formed on the side surface of a trench nearly coincide with the axial direction for which the carrier effective masses is the second smallest out of the axial directions of three-dimensional orthogonal coordinates in the crystal structure of silicon carbide. CONSTITUTION:The carrier moving direction of a channel formed on the side surface of a trench 6 is set as the axial direction of 4H silicon carbide (the direction vertical to the surface where a semiconductor substrate 14 comes into contact with a p-type epitaxial layer 3 is the axial direction of 4H silicon carbide). A current passes the channel part of the trench 6 side surface and flows in the longitudinal direction. The electron moving direction of the channel is that of the axial direction with second smallest of the effective electron masses out of the axial directions of the three-dimensional orthogonal coordinates in the crystal structure of silicon carbide. Since the effective electron mass is small and the electron mobility is large in the electron moving direction, characteristics of low on-resistance can be obtained.

8. 发明专利

JPH01285653A FUEL INJECTION DEVICE 失效
公开(公告)号：JPH01285653A
公开(公告)日：1989-11-16
申请号：JP11107388
申请日：1988-05-07
申请人： NIPPON DENSO CO
发明人： KATO MASAAKI , OSUGA ISAO , SASAKI SATORU , KANO HIROYUKI
IPC分类号： F02M47/00
摘要： PURPOSE:To suppress the loss of the driving torque and the reduction and fluctuation of the pressure by connecting a fuel injection valve to a high-pressure feed pump via a pressure accumulator and a switch control valve and switching the switch control valve to control the communication state between the fuel injection valve and the high-pressure feed pump. CONSTITUTION:When the fuel injection of an internal combustion engine is to be started, a switch control valve 8 is switched by an ECU 120, high-pressure fuel is fed from the pressurization chamber 22 of a high-pressure feed pump 6 to the pressure chamber 68 of a fuel injection chamber 22, a pressure control valve 58 is closed. The high-pressure fuel of the pressurization chamber 22 is fed to a fuel reservoir 38 via a pressure accumulator 4, a nozzle valve 44 is lifted to open a nozzle hole 40. As a piston 50 is further lifted, the fuel in a back pressure chamber 48 is gradually discharged to a fuel tank 12 via an orifice 74. On the other hand, at the time of stopping the fuel injection, the switch control valve 8 is switched, the pressurization chamber 22 and the pressure chamber 68 are communicated to the fuel tank 12 respectively. The pressure control valve 58 is opened by the high-pressure fuel of the pressure accumulator 4, the fuel injection valve 2 is closed.

9. 发明专利

JPH04347362A FUEL INJECTION VALVE 失效
公开(公告)号：JPH04347362A
公开(公告)日：1992-12-02
申请号：JP14959091
申请日：1991-05-23
申请人： NIPPON DENSO CO
发明人： KATO MASAAKI , KANO HIROYUKI , OKAJIMA MASAHIRO , DATE KENJI
IPC分类号： F02M61/18
摘要： PURPOSE:To improve a fuel spray characteristic without entailing any drop in an actual spray rate at the time of controlling the spray rate by means of needle lift control. CONSTITUTION:A nozzle body 14 is provided with a first conical surface 25 made up of forming a specified angle in a tip inner part and two nozzle holes 28, 29 formed as interconnecting to the outside from the inside of a second conical surface ranging to this first conical surface 25. A needle valve 15 set up shiftably in the nozzle body 14 is provided with the nozzle body 14, a cylindrical shaft body 31, a first incline 32 being formed at a tip of this cylindrical shaft body 31, and a second incline 33 being formed at a tip of this first incline 21. In this needle valve 15, distances La, Lb between the needle valve and nozzle hole inlet are set up so as to make an effective passage area at each inlet of these nozzle holes 28, 29 variable according to a lift value. In succession, fuel is fed under pressure in the nozzle body 14, through which the needle valve 15 is opened, and fuel is sprayed out of these nozzle holes 28, 29.

10. 发明专利

JPH0267459A FUEL INJECTION NOZZLE 失效
公开(公告)号：JPH0267459A
公开(公告)日：1990-03-07
申请号：JP21824088
申请日：1988-08-31
申请人： NIPPON DENSO CO
发明人： OKAJIMA MASAHIRO , KANO HIROYUKI , OMORI NORIO , KOJIMA TERUTADA
IPC分类号： F02M61/18
摘要： PURPOSE:To control any variation in fuel spray travel from each jet by chamfering each periphery of these jets into a reentrant curved form, and making a jet inlet so as to exist in a base of this curved cavity, in a jet type fuel injection nozzle. CONSTITUTION:A needle valve member 4 is reciprocatibly inserted into an inner chamber 3 of a cylindrical nozzle body 1 whose tip part is blocked up. A conical surface-form tip part 41 of this needle valve member 4 comes into contact with a conical surface-form valve seat 11 formed in the inner part of the tip part of the nozzle body 1, and plural numbers of jets 8 are closed by the needle valve member 4 pressed to this valve seat 11. In this case, a cavity 13 is formed around the jets 8, making any vortex be hard to occur and around a jet inlet 8A, and thereby a pressure loss of fuel is decreased. With this constitution, the fuel is made sprayable at almost uniform jet velocity from each jet 8.

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