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1. 发明专利

JPS6255437A INJECTION RATE CONTROL DEVICE FOR HYDRAULICALLY PRESSURIZED LIQUID 失效
公开(公告)号：JPS6255437A
公开(公告)日：1987-03-11
申请号：JP19391885
申请日：1985-09-04
申请人： NIPPON SOKEN
发明人： YOSHINAGA TORU , ITO TOSHIHIKO , SAKAKIBARA YASUYUKI , NATSUYAMA YUKIHIRO , OMICHI SHIGEKI
IPC分类号： F02M45/00 , F02D41/40 , F02M51/00 , F02M51/06
摘要： PURPOSE:To enable the enlargement of dynamic range of an injection rate by arbitrarily controlling the discharge quantity of the charge in a piezo-actuator so as to arbitrarily control the amount of lift of a needle valve in an accumulator nozzle. CONSTITUTION:In an accumulator nozzle 1, when a pump plunger enters the compression discharge stroke of fuel, the pressures in an oil pressure control chamber 34 and an accumulator chamber 40 rise, and a charge corresponding to the pressure is produced and stored in a piezo-actuator 31. At the time of injection, if a thyrister in an electric circuit 100 is turned 'on', the voltage in the piezo-actuator 31 decreases, and the volume contracts in proportion to the discharge quantity of the charge. In response to this contraction, a piston 32 is pushed up by the restoring force of a disk spring 33 to increase the volume of the oil pressure control chamber 34, so that the pressure is reduced. Accordingly, a sudden and large pressure difference is caused between the oil pressure control chamber 34 and the accumulator chamber 40, and a needle valve 12 is opened by the amount of lift corresponding to the pressure difference, so that fuel is injected from a nozzle 13.

2. 发明专利

JPS61277865A FUEL AMOUNT REGULATING DEVICE 失效
公开(公告)号：JPS61277865A
公开(公告)日：1986-12-08
申请号：JP11767585
申请日：1985-06-01
申请人： NIPPON SOKEN
发明人： YOSHINAGA TORU , ITO TOSHIHIKO , SAKAKIBARA YASUYUKI , NATSUYAMA YUKIHIRO
IPC分类号： F02M41/12
摘要： PURPOSE:To enable to perform pilot injection through improvement of fuel amount regulation precision, by providing a valve body which is actuated by means of a pressure in a pressure chamber changed through expansion and contraction of an electrostriction element to release and shut off a fuel passage. CONSTITUTION:When an electrostriction element 70 is contracted for backward movement by means of a voltage applied by a control device 54 at a given timing of the suction stroke of a plunger 26, a pressure in a compression chamber 100 is decreased through a piston 72 to release a fuel suction passage 30b by means of a valve body 108, and fuel flows through a fuel suction passage 30a and is sucked in a pump chamber 28. When energization is stopped and the electrostriction element 70 is expanded, a pressure in the pressure chamber 100 is increased through the piston 72 to shut off the fuel section passage 30b by means of the valve body 108. This causes a fuel amount to be regulated according to the length of a period between opening and closing of the valve body 108. Since a fuel amount regulating device 12 has extremely excellent response, it enables to perform pilot injection.

3. 发明专利

JPS61135976A Fuel control apparatus for internal combustion engine 失效
标题翻译：燃油控制装置内燃机
公开(公告)号：JPS61135976A
公开(公告)日：1986-06-23
申请号：JP25634884
申请日：1984-12-03
申请人： Nippon Soken Inc
发明人： NATSUYAMA YUKIHIRO , ITO TOSHIHIKO , SAKAKIBARA YASUYUKI , YOSHINAGA TORU
IPC分类号： F02M41/12 , F02D1/02 , F02D1/04 , F02D1/12
摘要： PURPOSE: To facilitate pilot injection of fuel, by providing a spill port for com- municating a pressure chamber of a fuel injection pump to the low pressure side, a spill valve that is opened and closed in response to the difference of forcesacted to the opposite ends thereof, and a solenoid valve which serves to communicate a variable pressure chamber with either of said pressure chamber or to the low pressure side alternatively.
CONSTITUTION: In a high-pressure pump (fuel injection pump) 1 shown in the drawing, fuel is distributed to injection nozzles 2 via a groove 15, a discharge port 16, etc. after pressurizing fuel drawn into a pressure chamber 50 by the function of a plunger 11 that is designed to be able to reciprocate together with rotation. In such an arrangement, the pump 1 comprises further a sleeve-like housing 80 which serves as a fuel control means 8 for controlling pressure in the pressure chamber 50, and a solenoid valve 81 and a spool valve 82 are provided in said housing 80. The spool valve 82 includes a spill valve consisting of a spool 822 and a power piston 823, and opening and closing of a spill port 821c is controlled by the difference of pressures acted to the opposite ends of the spill valve. Further, the solenoid valve 81 is controlled to communicate a variable pressure chamber 827 formed on the right-side end of the power piston823 with either of the pressure chamber 50 or to the low pressur side alternatively.
COPYRIGHT: (C)1986,JPO&Japio
摘要翻译：目的：为了方便驾驶员注射燃料，通过提供一个用于将燃油喷射泵的压力室传送到低压侧的溢出口，一个溢流阀响应于反作用力的差异而打开和关闭端部，以及电磁阀，其用于将可变压力室与所述压力室中的任一个或低压侧交替地连通。构成：在图中所示的高压泵（燃料喷射泵）1中，在通过功能加压吸入压力室50的燃料之后，通过槽15，排出口16等将燃料分配到喷嘴2 被设计成能够与旋转一起往复运动的柱塞11。在这种布置中，泵1还包括套筒状壳体80，其作为用于控制压力室50中的压力的燃料控制装置8，并且电磁阀81和滑阀82设置在所述壳体80中。滑阀82包括由阀芯822和动力活塞823组成的溢流阀，并且溢流口821c的打开和关闭由作用于溢流阀的相对端的压力差来控制。此外，电磁阀81被控制成将形成在动力活塞823的右侧端部的可变压力室827与压力室50中的任一个或低压侧交替地连通。

4. 发明专利

JPS60122245A CURRENT SUPPLY TIME CONTROL METHOD OF FUEL INJECTOR OF INTERNAL COMBUSTION ENGINE 失效
公开(公告)号：JPS60122245A
公开(公告)日：1985-06-29
申请号：JP22782583
申请日：1983-12-03
申请人： NIPPON SOKEN
发明人： SAKAKIBARA YASUYUKI , YOSHINAGA TOORU , ABE MASAYUKI , WATANABE KAZUHIDE , NATSUYAMA YUKIHIRO
IPC分类号： F02D41/40 , F02M41/12 , F02M59/36
摘要： PURPOSE:To start feeding current to a solenoid valve at a more precise timing in an equipment which controls quantity of fuel to be injected, using the solenoid valve not a spill ring. CONSTITUTION:If the quantity of fuel to be injected is controlled by opening and closing communication port 6 communicated with a pump chamber in which fuel is compressed by reciprocating action of a plunger 16, by means of a solenoid valve equipment 5 which is controlled by a calculation circuit 6, the circuit 6 receives the outputs signals of a reference position sensor 41 and an angular sensor 42 and a clock signal. When the revolutional phase angle theta of a revolving shaft of an engine is deivided by an angle signal thetaA fed from the angle sensor 42, the result of K is obtained which a remainder thetaR. The fraction thetaR is converted in a time (t'). The convertion is performed using an rpm obtained by compensating the rpm in an interval between the current angle signals because the rpm in an interval between the past angle signals. The revolution phase angle theta is then obtained according to the time (t') and using it, the time at which a current starts to carry through the solenoid valve equipment 5 is controlled.

5. 发明专利

JPS62210228A FUEL PRESSURE CONTROLLER 失效
公开(公告)号：JPS62210228A
公开(公告)日：1987-09-16
申请号：JP5137286
申请日：1986-03-11
申请人： NIPPON SOKEN
发明人： NATSUYAMA YUKIHIRO , ITO TOSHIHIKO , YOSHINAGA TORU , OMICHI SHIGEKI , TAKEUCHI YASUHIRO
IPC分类号： F02D1/02 , F02B75/12 , F02D41/20 , F02M41/12 , F02M45/04 , F02M47/02 , F02M51/06 , F02M63/00 , F02M63/02
摘要： PURPOSE:To prevent production of bubbles in fuel by communicating an accumulator through a small hole with a pressure chamber and providing a control valve for opening/closing the small hole. CONSTITUTION:An accumulator 315 is communicated through a small hole 311 with a pressure chamber 104 and a control valve 312 for opening/closing the small hole 311 is provided. When the pressure in the pressure chamber 104 is lower than a predetermined level, the small hole 311 is closed by means of the control valve 312 and when the pressure in the pressure chamber exceeds over the predetermined level, the small hole 311 is opened. Since the fuel is maintained at a constant pressure level when it is delivered, production of bubbles in the fuel can be prevented.

6. 发明专利

JPS62170736A FUEL INJECTION RATIO CONTROL DEVICE FOR DIESEL ENGINE 失效
公开(公告)号：JPS62170736A
公开(公告)日：1987-07-27
申请号：JP1217986
申请日：1986-01-24
申请人： NIPPON SOKEN , TOYOTA MOTOR CORP
发明人： ITO TOSHIHIKO , YOSHINAGA TORU , NATSUYAMA YUKIHIRO , OMICHI SHIGEKI , KOBAYASHI FUMIAKI
IPC分类号： F02D1/02 , F02B3/06 , F02M41/12 , F02M51/00
摘要： PURPOSE:To accurately perform a fuel injection ratio control, by providing a fuel injection ratio control device which is intercommunicated to a high pressure chamber capable of being pressurized by means of the plunger of a fuel injection pump, and provided with a free-piston inserted into the cylinder thereof, thereby electrically controlling the displacement of the free-piston. CONSTITUTION:An injection ratio control mechanism 40 is provided on the front face of a housing 10 of a distributor type fuel injection pump. Said mechanism 40 is constituted in such a way that a solenoid valve 45, variable displacement mechanism 46 and partion plate 47 are housed in a casing 41, wherein the solenoid valve 45 is provided with a valve body 51 which is upward moved against a spring 50 so as to be separated from a valve seat 56 by excitation of a solenoid 48. Further, a free-piston 52 energized by a spring 53 in a cylinder 65 is housed in the variable displacement mechanism 46. Then, the first hydraulic pressure chamber 67 partioned by the piston 52 is intercommunicated to a low pressure chamber 16 through a solenoid valve 45 and the second hydraulic pressure chamber 68 is intercommunicated to a high pressure chamber 13 partioned between a plunger 12 and partion plate 47 through a continuity passage 66.

7. 发明专利

JPS62107264A FUEL INJECTION DEVICE 失效
公开(公告)号：JPS62107264A
公开(公告)日：1987-05-18
申请号：JP24412685
申请日：1985-11-01
申请人： NIPPON SOKEN
发明人： NATSUYAMA YUKIHIRO , ITO TOSHIHIKO , SAKAKIBARA YASUYUKI , YOSHINAGA TORU , OMICHI SHIGEKI
IPC分类号： F02M55/02 , F02M47/02 , F02M51/00
摘要： PURPOSE:To simplify the structure of a fuel ignition pump by providing an accumulator nozzle, which retains and injects high pressure fuel to be supplied in a branching form from a fuel ignition pump, for every cylinder and interposing a pressure regulation means in a fuel pipe passage which is connected to respective nozzles. CONSTITUTION:Each of accumulator nozzles 1-4 is provided at every cylinder so that fuel can be supplied from an in-line fuel ignition pump 400. Everyone of the accumulator nozzles 1-4 has an accumulator 40, which reserves the fuel supplied to an inlet port 11, and injects the fuel from an injection port 13 when a needle valve 12 is opened by the operation of a piezo-actuator 31. A device 500 for varying volume is provided, as a pressure regulating means, on the upstream side of a fuel pipe passage 70 which connects the fuel injection pump 400 to respective accumulator nozzles 1-4. And the device 500 varies the fuel pressure by linking up with an accelerator pedal 80 in such a way that the fuel pressure is increased in proportion to the opening of acceralator.

8. 发明专利

JPS6267275A FUEL INJECTION DEVICE 失效
公开(公告)号：JPS6267275A
公开(公告)日：1987-03-26
申请号：JP20638985
申请日：1985-09-20
申请人： NIPPON SOKEN
发明人： ITO TOSHIHIKO , SAKAKIBARA YASUYUKI , YOSHINAGA TORU , NATSUYAMA YUKIHIRO
IPC分类号： F02M51/06 , F02M51/00 , F02M57/02
摘要： PURPOSE:To make an injection rate lower at the initial stage but higher at the time of termination, by letting a needle valve open a nozzle hole by means of decompression in a pump case, performing fuel injection, while closing the nozzle hole with pressure inside the pump case upped, and stopping the fuel injection. CONSTITUTION:The fuel fed by pressure to a fuel injection valve 200 from a fuel supply source 100 is spouted out of a nozzle hole 203 when a needle valve 228 opens or closes this nozzle hole 203 in response to expansion and contraction motions of an electrostrictive type actuator 201. Since there is provided with a check valve 228, the needle valve 202 makes injection fuel pressure increasable when going down to open it. That is to say, high pressure injection takes place the higher the nearer to injection termination. And, an injection rate at the initial stage of injection is held down to relatively low. In addition, a throttle 231 is formed in a regulating passage 226, and when the needle valve 202 goes up, pressure in a pump case 211 is gradually raisable with feed pressure as an upper limit and, what is more, at the time of a compression stroke of the pump case, pressure inside this pump case 211 is yet more suddenly raisable.

9. 发明专利

JPS61164044A FUEL INJECTION DEVICE OF INTERNAL-COMBUSTION ENGINE 失效
公开(公告)号：JPS61164044A
公开(公告)日：1986-07-24
申请号：JP415085
申请日：1985-01-16
申请人： NIPPON SOKEN
发明人： NATSUYAMA YUKIHIRO , ITO TOSHIHIKO , SAKAKIBARA YASUYUKI , YOSHINAGA TORU , ABE MASAYUKI
IPC分类号： F02M41/12 , F02D1/02 , F02D1/04
摘要： PURPOSE:To dispense with an intake port and others for exclusively taking in fuel by opening and closing through a needle valve a fuel path of a pressure changing chamber in a spool communicating to a pressure chamber pressurized by the operation of a plunger and connecting a spill path to a communicating path for conducting a fuel path to a low pressure chamber of a pump. CONSTITUTION:A distribution type injection pump 1 pressurizes fuel in a pressure chamber 50 by the operation of a plunger 11 synchronized with an engine and supplies fuel into an injection nozzle 2 through a cut-out groove 12, discharge port, delivery valve 60, etc. Then, a spool 120 formed in the interior with a pressure changing chamber 150 communicating to the pressure chamber 50 through a throttle 121 is disposed to move toward and away from the pressure chamber 50 so that a fuel path 113 provided in said chamber 150 is opened and closed by a needle valve 110. The fuel path 113 communicates to a low pressure chamber 15 of a pump through a communication path 114 to which a spill path for releasing fuel in the pressure chamber 50 communicates, while this spill path is formed between both said chamber and spool when the spool 120 is spaced from the pressure chamber 50.

10. 发明专利

JPS6158187A Ignition plug 失效
公开(公告)号：JPS6158187A
公开(公告)日：1986-03-25
申请号：JP17998884
申请日：1984-08-29
申请人： Nippon Soken
发明人： YOSHINAGA TORU , NATSUYAMA YUKIHIRO
IPC分类号： H01T13/46

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