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1. 发明专利

JPH03233164A MAINTENANCE DEVICE OF INTAKE CONTROL UNIT 失效
公开(公告)号：JPH03233164A
公开(公告)日：1991-10-17
申请号：JP2712190
申请日：1990-02-08
申请人： NIPPON DENSO CO , TOYOTA MOTOR CORP
发明人： SUMIYA SHINYA , OSAKI MASATOYO , TOYODA YASUHIRO , NAKAMURA HIROSHI
IPC分类号： F02M35/10 , F02M25/07
摘要： PURPOSE:To prevent foreign matter from accumulating in a passage by additionally providing an air introducing pipe, having a selector valve, in the pressure detecting passage, opened at more downstream side of an intake control valve related to an intake passage, and introducing air to the pressure detecting passage at the time of stopping an internal combustion engine. CONSTITUTION:An engine is stopped by placing an intake control valve 12 in a fully closed condition and cutting off intake air and further fuel. Since a negative pressure is generated in the downstream of the fully closed intake control valve 12 while the engine is continued to rotate by inertia, when an electromagnetic selector valve V5 is opened being selected from off to on, air is advanced by a large differential pressure from an air intake port 46 of an air cleaner or the like to pass through a pressure detecting passage 24 from an air introducing pipe 47 and the electromagnetic selector valve V5, and a large amount of air is jetted at a high speed to an intake passage 2 in the downstream of the intake control valve 12. As a result, carbon or the like of adhering to a wall surface of the pressure detecting passage 24 is blown and removed by a strong air stream. Accordingly, the pressure in the intake passage is transmitted to an intake control unit always in good responsiveness to prevent generation of hunting or the like.

2. 发明专利

JPS62210226A INJECTION RATE CONTROLLER FOR FUEL INJECTION PUMP 失效
公开(公告)号：JPS62210226A
公开(公告)日：1987-09-16
申请号：JP5050386
申请日：1986-03-10
申请人： NIPPON DENSO CO , TOYOTA MOTOR CORP
发明人： NISHIMAKI HIROAKI , YAMADA YASUO , SUMIYA SHINYA , KAWAGOE MICHIO
IPC分类号： F02D1/02 , F02M41/12 , F02M45/00
摘要： PURPOSE:To control the fuel injection rate finely by coupling an accumulate cylinder to a fuel pressurizing chamber and performing the open/close control of a bypath of a back pressure chamber of an accumulate position. CONSTITUTION:An accumulate cylinder 20 is coupled to a fuel pressurizing chamber 4 and a back pressure chamber 30 of an accumulate piston 34 in the accumulate cylinder 20 is communicated through a bypath 33 to the low pressure side. A valve 36 having a spill port 38 is provided in the bypath 33. The valve 36 is opened/closed by means of a solenoid coil 37 to control the injection rate. Consequently, the fuel injection rate can be controlled finely corresponding to the operating condition.

3. 发明专利

JPS6165027A Injection rate control device of fuel injection pump 失效
标题翻译：燃油喷射泵的喷射率控制装置
公开(公告)号：JPS6165027A
公开(公告)日：1986-04-03
申请号：JP18487484
申请日：1984-09-04
申请人： Nippon Denso Co Ltd , Toyota Motor Corp
发明人： SHIMENO TOSHIAKI , SUMIYA SHINYA , KAWAGOE MICHIO , SATO TAKESHI , YAMADA MITSUMASA
IPC分类号： F02M41/12 , F02D1/02 , F02D1/08 , F02D1/18 , F02M45/00
摘要： PURPOSE: To optimize the injection rate by accumulating the fuel fed by pressure from a pump plunger to an injection nozzle and changing the accumulated quantity in response to the operational state.
CONSTITUTION: An accumulating piston 43 is connected to a pressure-feed passage from a pump plunger to an injection nozzle via a passage 44, and a liquid- tight chamber 46 between the accumulating piston 43 and a rotatable cylinder 45 is communicated to a pump chamber via a control hole 51. The cylinder 45 is rotated with hydraulic control vanes 56, 57 connected to the cylinder 45 in response to the operational state of an engine, and the control hole 51 is opened or closed with the control reed 52 of the cylinder 45 to control the accumulated quantity. Accordingly, the injection rate can be controlled at optimum.
COPYRIGHT: (C)1986,JPO&Japio
摘要翻译：目的：通过将从泵柱塞的压力供给到喷嘴的燃料积聚并响应于操作状态改变累积量来优化喷射速率。构成：蓄积活塞43经由通路44与从泵柱塞到喷嘴的压力供给路连接，蓄积活塞43与可旋转气缸45之间的液密室46与泵室响应于发动机的运行状态，气缸45旋转，液压控制叶片56,57连接到气缸45，并且控制孔51与气缸的控制盘52打开或关闭 45控制累积量。因此，可以将喷射速度控制在最佳状态。

4. 发明专利

JPH0323337A TROUBLE DIAGNOSING DEVICE FOR SUCTION CONTROL DEVICE 失效
公开(公告)号：JPH0323337A
公开(公告)日：1991-01-31
申请号：JP15358889
申请日：1989-06-17
申请人： TOYOTA MOTOR CORP , NIPPON DENSO CO
发明人： NAKAMURA HIROSHI , TANAKA TAKAHIDE , SUMIYA SHINYA
IPC分类号： F02D41/22 , F02D9/02 , F02M25/07
摘要： PURPOSE:To effect given coping with a situation through diagnosis of the trouble of a suction control device by a method wherein a pressure in an intake air passage on the downstream of a suction control valve is detected, and it is decided that a trouble occurs when a difference between a maximum and a minimum value exceeds a given value. CONSTITUTION:A constant pressure control device A controls a suction control valve 12 so that a pressure in an intake air passage 2 on the downstream of the suction control valve 12 is adjusted to a specified value. In this case, a pressure in the intake air passage 2 on the downstream of the suction control valve 12 is detected by a means B. Based on the detecting result of the means B, a fluctuation in a pressure containing the maximum and the minimum value of a pressure during a given period is detected by a means C. Based on the detecting result of the means C, it is decided by a means D that a trouble occurs when a difference between a maximum and a minimum value exceeds a given value. This constitution diagnoses the trouble of the suction control device and performs given coping with the trouble.

5. 发明专利

JPS63208630A FUEL INJECTION RATE CONTROL DEVICE 失效
公开(公告)号：JPS63208630A
公开(公告)日：1988-08-30
申请号：JP4117587
申请日：1987-02-24
申请人： NIPPON DENSO CO , TOYOTA MOTOR CORP
发明人： NAKAJIMA TATSUSHI , MATSUMURA TOSHIMI , SUMIYA SHINYA , IBUKI NORITAKA , KOBAYASHI FUMIAKI
IPC分类号： F02M45/00 , F02D1/02 , F02M41/12
摘要： PURPOSE:To perform adequate pilot injection, forming constitution in small size by providing a small chamber communicating with a pump chamber and large changing its substantial accumulating amount through a slight amount of changing the volume of an electrostrictive type actuator. CONSTITUTION:A housing 21 of an injection rate control device 3 is mounted to a casing 4 of an injection pump main unit 1 by a thread 22. And forming a cylinder bore 24 in the inside of the housing 21, the control device 3 inserts a stepped piston 25 to be slidably fitted to the cylinder bore 24 while forms a chamber 26 between both these cylinder bore 24 and stepped piston 25. While the device 3 provides a through hole 27, through which a high pressure chamber 2 of the injection pump main unit 1 communicates with the chamber 26, to be drilled in a bottom wall 23 of the housing 21 further constitutes an opening and closing valve by a seating edge 28 of the through hole 27 and a conical surface 29 of the stepped piston 25. On the other hand, the control device 3 provides a recess 31 in a large contour part of the stepped piston 25, inserting an electrostrictive type actuator 32 into this recess 31.

6. 发明专利

JPS6210432A CONTROL DEVICE FOR INTAKE THROTTLE IN DIESEL ENGINE 失效
公开(公告)号：JPS6210432A
公开(公告)日：1987-01-19
申请号：JP14902285
申请日：1985-07-05
申请人： NIPPON DENSO CO , TOYOTA MOTOR CORP
发明人： SUMIYA SHINYA , TAKEMOTO HIDETSUGU , NAKATSUKA KOKEI , IBUKI NORITAKA , MATSUMURA TOSHIMI , IKEDA SHINJI , AOKI KEIJI , KOBAYASHI FUMIAKI
IPC分类号： F02D9/02 , F02B3/06 , F02D41/00 , F02D41/08
摘要： PURPOSE:To effectively prevent idle noise and/or vibration, by controlling an intake throttle valve so that a difference between the peak value of an ignition signal, detected by an ignition detector, and the preset value or the limit reference value, obtained while an engine is in operation, decreases smaller. CONSTITUTION:While an engine is in operation, a CPU10, deciding whether or not the engine is placed in an idle condition on the basis of an output from a rotary angle detector 15 and a load detector 17, decides, when the decision is YES, whether or not the engine is in a condition after it is warmed on the basis of an output from a water temperature detector 16, and when it is decided that the engine finishes warming operation, the CPU10 fetches an output of an ignition detector 2 outputting an ignition signal in accordance with combustion light in a combustion chamber. And the CPU10, detecting a peak value Vp of the ignition signal, obtains a difference from the limit reference value Vt being a peak value immediately before exhaust emission worsens. Subsequently, the CPU10, deciding a value of said difference and adjusting duty ratio of a signal for operating a solenoid valve 19 so that said difference becomes zero, controls an intake throttle valve 1 to be opened and closed.

7. 发明专利

JPS6123834A Injection rate controller 失效
标题翻译：注射率控制器
公开(公告)号：JPS6123834A
公开(公告)日：1986-02-01
申请号：JP14177384
申请日：1984-07-09
申请人： Nippon Denso Co Ltd , Toyota Motor Corp
发明人： SUMIYA SHINYA , SHIMENO TOSHIAKI , MATSUMURA TOSHIMI , KAWAGOE MICHIO , SATO TAKESHI
IPC分类号： F02D1/02 , F02D1/18 , F02M59/22
CPC分类号： F02M59/22
摘要： PURPOSE:To aim at optimization in a fuel injection rate, by letting an oiltight chamber, which is interconnected to a plunger chamber, interconnect a pump chamber via a control hole, while controlling this hole for its on-off operation. CONSTITUTION:An oiltight chamber 27 is formed by an accumulate piston 22 and an accumulate ring 25 being inserted into a cylinder to be interconnected to a plunger chamber 20, and this oiltight chamber 27 is interconnected to a pump chamber via a control hole 30. A control reed 31, opening or closing the control hole 30 is formed with the accumulate ring 25, turning this accumulate ring 25 with a control piston 36, and a travel of the accumulate piston 22 is controlled. With this constitution, a fuel accumulate quantity is varied according to an engine operating state, thus a fuel injection rate is maintainable in optimum condition.
摘要翻译：目的：为了瞄准燃油喷射率的优化，通过将与柱塞室相互连接的油密室通过控制孔相互连接泵室，同时控制该孔的开 - 关操作。构成：油封室27由积聚活塞22和积聚环25形成，该活塞22插入到气缸中以与柱塞室20相互连接，该油密室27通过控制孔30与泵室相互连接。控制筘31，打开或关闭控制孔30由积聚环25形成，并用控制活塞36转动该积聚环25，并且控制累积活塞22的行程。利用这种构造，燃料积存量根据发动机运行状态而变化，因此燃料喷射率可以在最佳状态下保持。

8. 发明专利

JPS6232244A CONTROLLER FOR DIESEL ENGINE 失效
公开(公告)号：JPS6232244A
公开(公告)日：1987-02-12
申请号：JP14356585
申请日：1985-06-28
申请人： NIPPON DENSO CO , TOYOTA MOTOR CORP
发明人： SUMIYA SHINYA , TAKEMOTO HIDETSUGU , NAKATSUKA KOKEI , IKEDA SHINJI , AOKI KEIJI , KOBAYASHI FUMIAKI
IPC分类号： F02D9/02 , F02B3/06 , F02D41/00 , F02D41/14 , F02D41/40
摘要： PURPOSE:To prevent an exhaust emission from worsening, by controlling a span of injection timing with open-loop control using the control value set according to an engine driving state at a time when an ignition signal is not secured out of an ignition detector. CONSTITUTION:A device bearing the above caption controls a fuel injection timing regulating member M3 by a correcting device M40 to correct an error between the fuel injection timing set by a fuel injection timing setting device M2 and the actual fuel injection timing found out of output of an ignition detector M1 generating a signal conformable to combustion light of an engine. Also, it controls opening of a suction throttle valve M6 according to the suction throttled variable set by a suction throttle variable setting device M50. At the above-mentioned device, there is provided with a mulfunction detecting device M10 which detects a mulfunction in an ignition detecting system on the basis of the ignition detector M1, and at the time of detecting the mulfunction, fuel injection timing control by open-loop control is started and simultaneously suction throttling control is controlled so as to be released.

9. 发明专利

JPS6226342A FUEL INJECTION TIMING CONTROLLER 失效
公开(公告)号：JPS6226342A
公开(公告)日：1987-02-04
申请号：JP16623585
申请日：1985-07-26
申请人： NIPPON DENSO CO , TOYOTA MOTOR CORP
发明人： NAKATSUKA KOKEI , MATSUMURA TOSHIMI , IBUKI NORITAKA , SUMIYA SHINYA , IKEDA SHINJI , AOKI KEIJI , KOBAYASHI FUMIAKI
IPC分类号： F02D41/40 , F02D41/00
摘要： PURPOSE:To improve the noise reducing effect by delay-angle-controlling the injection- timing according to the ignition signal when idle operation is started and by advance- angle-controlling the injection timing when the ignition signal disappears, and fixing the fuel injection timing at the injection timing immediately before the disappearance of the ignition signal. CONSTITUTION:The captioned apparatus is equipped with an ignition detector 1 for generating the signal corresponding to the combustion light of an engine, memory means 2 which previously memorizes the fuel injection timing data in idling, and a revolution angle detector 3 for outputting the top dead center signal train showing the top dead center position of a piston. When an engine is put into idle operation, a calculation control means 5 judges the existence of the ignition signal between the contiguous top dead center signals on the basis of the top dead center signal trains and the ignition signal by a judging means 4, and when the existence of the ignition signal is judged, the fuel injection timing is gradually delay-angle-controlled, having the injection timing data as initial value. While, when the no-existence of the ignition signal is judged, the injection timing is fixed at the fuel injection timing immediately before the disappearance of the ignition signal by advance-angle-controlling the injection timing.

10. 发明专利

JPS63111259A FUEL INJECTION TIMING CONTROL DEVICE FOR INTERNAL COMBUSTION ENGINE 失效
公开(公告)号：JPS63111259A
公开(公告)日：1988-05-16
申请号：JP25747286
申请日：1986-10-29
申请人： NIPPON DENSO CO
发明人： TAKEMOTO HIDETSUGU , MATSUMURA TOSHIMI , TAGUCHI ATSUSHI , SUMIYA SHINYA
IPC分类号： F02D41/40 , F02D1/00 , F02D41/00
摘要： PURPOSE:To permit an instrumental error existing in a fuel injection pump and to accurately control the fuel injection timing by adjusting the state of an electric signal generated in the interior of a device from the outside, thereby correcting either the target value or the actual value of the fuel injection time. CONSTITUTION:Phase signal generating means M3 generates a signal corresponding to the rotational phase of a cam for driving a plunger of a fuel force feed pump, and reference position detecting means M5 outputs a signal corresponding to the reference position of a cycle of an internal combustion engine M4. According to a phase difference of both signals, the actual fuel injection time of a fuel injection pump M1 is detected by actual fuel injection timing detecting means M6. On the other hand, the operating condition of the internal combustion engine M4 is detected by means M7, and according to the detection results, the target fuel injection timing is calculated by means M8. Means M2 is controlled by means 9 in such a manner that the actual value of fuel injection timing agrees with the target value. In this case, the state of an electric signal generated in the interior of the device is adjusted by means M10, whereby either the actual fuel injection timing or the target timing thereof is corrected by means M11.

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