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1. 发明专利

JPH0396657A FUEL INJECTION UNIT OF INTERNAL COMBUSTION ENGINE 失效
公开(公告)号：JPH0396657A
公开(公告)日：1991-04-22
申请号：JP23033589
申请日：1989-09-07
申请人： NIPPON DENSO CO , TOYOTA MOTOR CORP
发明人： SHIRABE NAOTAKA , KUSHIBE TAKAHIRO
IPC分类号： F02M67/02 , F02M67/04 , F02M67/12
摘要： PURPOSE:To make a special compressed air source unnecessary by composing the system to lead the compressed air compressed in a cylinder partially into a fuel injection unit from a nozzle, and to accumulate it in a pressure accumulation chamber or the like, in the unit in which the fuel is injected together with the compressed air. CONSTITUTION:In an air blast valve, a needle valve shaft 2 is moved against a return spring 9 by exciting a solenoid 6, and a needle valve 5 at the top of the valve shaft 2 is separated from a nozzle port 4. And to the unit main body 1, a fuel injection valve 15 to inject the fuel into a compressed air passage 16 is provided. In this case, at the upper stream side end of the compressed air passage 16, a check valve 19 which consists of a ball 17, a spring 18, and the like is provided, and when this valve is operated, a compressed air including the fuel is led to a canister or the like. And inside the main body 1, a pressure accumulation chamber 20 is formed around the valve shaft 2, and it is linked to the compressed air passage 16. And the needle valve 5 is opened even at the final period of the compression stroke of the engine, and the compressed air in the combustion chamber is led in and accumulated in the pressure accumulation chamber 20.

2. 发明专利

JPS6361769A ELECTROMAGNETIC TYPE FUEL INJECTION VALVE 失效
公开(公告)号：JPS6361769A
公开(公告)日：1988-03-17
申请号：JP20556486
申请日：1986-09-01
申请人： NIPPON DENSO CO , TOYOTA MOTOR CORP
发明人： SHIRABE NAOTAKA , SAKAI TATSUO , OKAWA KOJI , KUDO KOJI , KOBAYASHI NOBUYUKI
IPC分类号： F02M51/06 , F02M51/00
摘要： PURPOSE:To enable effective reduction of the generation of working noise through decrease of a noise radiating surface, by a method wherein the cylinder wall of a connector for receiving is notched in several spots. CONSTITUTION:A connector 2 for receiving is erected to a cylinder wall 21 and the central part of the cylinder wall, and has a collecting pin 22 making electrical continuity to an electromagnetic coil. In which case, the cylinder wall 21 is notched in three spots on its peripheral surface at equal intervals. This constitution reduces the noise radiating surface of the cylinder wall 21, and causes excellent reduction of working noise of an injection valve. Further, vibration of the cylinder wall 21 is prevented from production by means of a rubber cover 33 of a connector 3 for feed engaged internally of the notches of the cylinder wall 21, resulting in reduction of the generation of noise.

3. 发明专利

JPH04124463A FUEL INJECTION DEVICE FOR INTERNAL COMBUSTION ENGINE 失效
公开(公告)号：JPH04124463A
公开(公告)日：1992-04-24
申请号：JP24275890
申请日：1990-09-14
申请人： NIPPON DENSO CO , TOYOTA MOTOR CORP
发明人： YAMAMOTO KAZUO , SHIRABE NAOTAKA , KUSHIBE TAKAHIRO
IPC分类号： F02M51/06 , F02M67/02 , F02M67/12
摘要： PURPOSE:To prevent compressed air containing moisture from entering into a driving part housing by providing a split member for preventing the compressed air from entering into the driving part housing through a clearance between a needle insertion hole and a needle. CONSTITUTION:Since compressed air compressed by atmospheric pressure contains saturated steam, a lip type packing 102 is provided to prevent the compressed air from entering into a driving part housing 27 from between the wall surface of a needle insertion hole 22 and a needle 25. This lip type packing 102 is a ring member formed of flexible material such as oil-resistant synthetic rubber, and provided with lip parts 102a, 102b to be brought into contact with the surface of the needle 25 and a body 21 so as to hold them airtightly. Since the compressed air is filled on the lower side of the lip type packing 102, the lip parts 102a, 102b are respectively pressed/adhered to the side face of the needle 25 and the wall surface of a ring groove 101 so as to hold desirable seal at these parts.

4. 发明专利

JPH04101063A AIR-BLAST VALVE 失效
公开(公告)号：JPH04101063A
公开(公告)日：1992-04-02
申请号：JP21150990
申请日：1990-08-13
申请人： TOYOTA MOTOR CORP , NIPPON DENSO CO
发明人： KUSHIBE TAKAHIRO , TAKANO YUICHI , SHIRABE NAOTAKA , NIWA YUTAKA
IPC分类号： F02D41/10 , F02M67/02 , F02M67/12
摘要： PURPOSE:To obtain the desirable atomization of fuel injected at least at the latter half part by setting the valve closing timing of a fuel injection valve at the earlier timing than the valve closing timing of a switching valve for controlling the switch of a nozzle hole formed at one end of a compressed air passage and at the later timing than the valve opening timing of this switching valve. CONSTITUTION:In an air-blast valve 6 for jetting fuel together with compressed air toward inside a combustion chamber 4, the valve body 14 of a switching valve 13 opens a nozzle hole 12 through a movable core 16 when a solenoid 17 is energized. The compressed air from a compressed air passage 21 and fuel injected from the nozzle hole 26 of a fuel injection valve 25 are thereby mixed with each other in a compressed air passage 19 and injected into the combustion chamber 4 from the nozzle hole 12. In this case, the valve closing timing of the fuel injection valve 25 is set to the earlier timing than the valve closing timing of the switching valve 13 and to the later timing than the valve opening timing of the switching valve 13 by the time part approximately equal to the time required for the fuel injected from the fuel injection valve 25 to be carried to the nozzle hole 12 by compressed air flow.

5. 发明专利

JPH0354362A FUEL INJECTION DEVICE OF INTERNAL COMBUSTION ENGINE 失效
公开(公告)号：JPH0354362A
公开(公告)日：1991-03-08
申请号：JP18749489
申请日：1989-07-21
申请人： NIPPON DENSO CO , TOYOTA MOTOR CORP
发明人： SHIRABE NAOTAKA , NIWA YUTAKA , KUSHIBE TAKAHIRO
IPC分类号： F02M67/02 , F02M67/12
摘要： PURPOSE:To prevent misoperation, when a movable core is engaged with the rear end of a needle after a nozzle port is once closed, by providing an elastic stopper for restricting the displacement of the movable core in the other end side of the movable core which drives the needle. CONSTITUTION:When a solenoid 34 is electrified, a movable core 32 is attracted to a stator 28 to press down a needle 25 against urging force balance of coil springs 30 and 33, and a nozzle port 23 is opened by a valve part 26. Next, when the electrification is stopped, the movable core 32 is reset by the balance of the coil springs 30 and 33, and the nozzle port 23 is closed by the valve part 26 of the needle 25. An annular rubber-made stopper 59, which is an elastic unit, is baking-molded on a plate member 55 opposed to a peripheral edge part 58 in a spring insertion hole 57 of this movable core 32. Accordingly, when the movable core 32 is reengaged with a rear end 31 of the needle 25 after the nozzle port 23 is once closed, the nozzle port 23 can be prevented from being opened by misoperating the needle 25.

6. 发明专利

JPH0315655A FUEL INJECTION DEVICE FOR INTERNAL COMBUSTION ENGINE 失效
公开(公告)号：JPH0315655A
公开(公告)日：1991-01-24
申请号：JP24015489
申请日：1989-09-18
申请人： TOYOTA MOTOR CORP , NIPPON DENSO CO
发明人： ONO EIJI , HIROSE KATSUHIKO , NOMURA KENICHI , TATENO MANABU , TAKANO YUICHI , SHIRABE NAOTAKA , OGAWA KIMIYUKI
IPC分类号： F02M67/02
摘要： PURPOSE:To improve startability by feeding the compressed air from a combustion chamber to a compressed air passage when pressure in the combustion chamber reaches or exceeds the predetermined value at the time of an engine start in the system wherein fuel is jetted with the compressed air. CONSTITUTION:An air blast valve 20 so arranged in a cylinder head 3 as to expose the nozzle outlet 24 thereof in a combustion chamber 4 has a needle 23 inserted in a needle insertion hole 22 formed in a housing 21, and the needle 23 is actuated with a movable core 28 shifted on the excitation of a solenoid 30 against the force of a spring 27. Also, a compressed air passage 33 is connected to a nozzle chamber 32 formed in the housing 21 and the injection port 37 of a fuel injection valve 36 is positioned in the nozzle chamber 32. ln a fuel injection device as aforementioned, each of valves 20 and 36 is so controlled that fuel supply to the compressed air passage 33 is stopped at the time of an engine start, and the compressed air is supplied from the combustion chamber 4 to the compressed air passage 33 when pressure in the combustion chamber 4 reaches or exceeds the predetermined value.

7. 发明专利

JPS63195376A ELECTROMAGNETIC-TYPE FUEL INJECTION VALVE 失效
公开(公告)号：JPS63195376A
公开(公告)日：1988-08-12
申请号：JP2639187
申请日：1987-02-09
申请人： NIPPON DENSO CO , TOYOTA MOTOR CORP
发明人： SHIRABE NAOTAKA , YAMAMOTO KAZUO , OKAWA KOJI , KUDO KOJI , KOBAYASHI NOBUYUKI
IPC分类号： F02M51/06
摘要： PURPOSE:To reduce the impact sound, by forming a hollow to avoid a receiving pin from contacting to a receiving connector, between the receiving pin and the receiving connector which are connected electrically to an electromagnetic actuator. CONSTITUTION:When a periodical electric signal is applied to an electromagnetic actuator 15 of an electromagnetic-type fuel injection valve main body 1, a valve member 8 repeates an injection and a stop while striking a valve seat 6 and a stopper 12 repeatedly. In this case, since mechanical impacts between metal parts are repeated, and metal impact sounds in a relatively high frequency range are generated, a hollow 30 to avoid a receiving pin 26 from contacting to a receiving connector 29 is formed between the receiving pin 26 and the insulating receiving connector 29 surrounding the receiving pin 26, to prevent such an impact sound from transmitting to the receiving connector 29 which functions as an antenna. In such a way, the impact sound released outward can be reduced without spoiling the fuel injection property.

8. 发明专利

JPS61272460A ELECTROMAGNETIC TYPE FUEL INJECTION VALVE 失效
公开(公告)号：JPS61272460A
公开(公告)日：1986-12-02
申请号：JP11509885
申请日：1985-05-28
申请人： NIPPON DENSO CO , TOYOTA MOTOR CORP
发明人： SHIRABE NAOTAKA , NAGATA TOMIHIKO , SAKAI TATSUO , IWATA MINORU
IPC分类号： F02M51/06 , F02M51/08 , F02M61/18
摘要： PURPOSE:To reduce the formation of vapor and permit the superior injection by setting the ratio between the sum of the flow passage areas of two holes as the branched flow passages of a branched-flow member and the flow passage area of an injection hole into the range of a specific value. CONSTITUTION:A branched-stream member 8 onto which the flow passages for allowing the flow of fuel jetted from an injection hole 62 to branch-flow are formed is installed at the edge part of a body 6. The flow passage of the branched-flow member 8 is formed at the position corresponding to the injection hole 62, and the inlet for the fuel flow supplied from the injection hole 62 is formed in the form in which each part of two circles are superposed each other. The flow passage is branched as two holes 81 having each certain diameter, in a prescribed angle from the inlet in the branched-flow member 8, and opened at two positions at the edge part for the outer space. When the flow passage area of the injection hole is set S1, and the sum of the flow passage areas of two holes as the flow passages of the branched-flow member is set S2, the following relation between the surface areas S2/S1 is satisfied: 6

9. 发明专利

JPH05141300A FUEL INJECTION CONTROL DEVICE 失效
公开(公告)号：JPH05141300A
公开(公告)日：1993-06-08
申请号：JP11613191
申请日：1991-05-21
申请人： TOYOTA MOTOR CORP , NIPPON DENSO CO
发明人： ONO EIJI , SHIRABE NAOTAKA
IPC分类号： F02D41/20 , F02D41/34 , F02M51/00 , F02M51/02
摘要： PURPOSE:To start injection from fuel injection valves using an electric charge charged in a capacitor with small capacity. CONSTITUTION:A plurality of first fuel injection valves and a plurality of second fuel injection valves are provided. When a required injection amount is less than a set amount determined in advance, fuel is injected only from the first fuel injection valves, while the fuel is injected both from the first fuel injection valves and the second fuel injection valves when the required injection amount is more than the set amount. A fuel control device is provided with a capacitor 25 charged by a DC-DC converter 20, supplies an electric charge charged in the capacitor 25 to coils L1 and L2 for driving the first fuel injection valves so as to start fuel injection from the first fuel injection valves and then, keeps on exciting the coils L1 and L2 for driving the first fuel injection valves by a voltage of a battery 23 to continue fuel injection action. Fuel injection by the second fuel injection valves is started by the voltage of the battery 23.

10. 发明专利

JPH04265467A AIR BLAST VALVE 失效
公开(公告)号：JPH04265467A
公开(公告)日：1992-09-21
申请号：JP2634591
申请日：1991-02-20
申请人： NIPPON DENSO CO , TOYOTA MOTOR CORP
发明人： YAMAMOTO KAZUO , SHIRABE NAOTAKA , KUSHIBE TAKAHIRO , NOMURA HIROSHI
IPC分类号： F02M69/04 , F02M61/14 , F02M61/18 , F02M67/12
摘要： PURPOSE:To obtain totally inclined fuel injection to the axial line of a switching valve when the particle diameter of fuel injection injected from an air blast valve is small, and fuel injection along the axial line of the switching valve when the particle diameter of fuel injection injected from the air blast valve is large. CONSTITUTION:The nozzle opening 15 of an air blast valve 10 is provided with a valve seat 17 which expands approximately conically outwards to the edge surface of the air blast valve 10. The valve body 18 of a switching valve 16 is placed at the valve seat 17. The top edge 17a of the valve seat 17 is formed, inclining to the axial line A of the switching valve 16. There is formed injection air flow 27 whose injection angle becomes smaller gradually as it moves from an outmost part 17c to the inmost part 17b of the valve seat top edge 17a. Namely, there is formed injection air flow 27 which inclines to the shaft line A of the switching valve 16. When the particle diameter of fuel injection injected from the nozzle opening 15 is small, it moves on injection air flow 27, and when the particle diameter of fuel injection is large, it does not move on injection air flow 27.

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