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1. 发明专利

JPS63277841A FUEL INJECTION CONTROL DEVICE FOR INTERNAL COMBUSTION ENGINE 失效
公开(公告)号：JPS63277841A
公开(公告)日：1988-11-15
申请号：JP10929587
申请日：1987-05-01
申请人： DIESEL KIKI CO
发明人： YAMADA KEIICHI , TAKAGI NOBUKAZU
IPC分类号： F02D41/38 , F02D41/00
摘要： PURPOSE:To reduce the mechanical noise by adjusting a pulse width of a driving pulse for controlling the operation of a fuel pumping solenoid valve and starting main injection before ending of pilot injection. CONSTITUTION:When an engine is in an operational condition where pilot injection should be executed, a control circuit 5 reads an output signal from a nozzle lift sensor and determines whether or not the output signal has fallen twice in one injection stroke. If NO, stop control of a solenoid valve 20 is increased by a predetermined value, and if YES, the stop control is decreased by a predetermined value. In an actual operation of the solenoid valve 20, a pilot injection time and a main injection time are continuously established under a separate condition. Accordingly, an injection nozzle 10 is seated only once in one injection stroke to thereby reduce a seating noise. Accordingly, a mechanical noise may be reduced as maintaining the effectiveness of the pilot injection.

2. 发明专利

JPH02136324A AIR-CONDITIONING DEVICE 失效
公开(公告)号：JPH02136324A
公开(公告)日：1990-05-24
申请号：JP29189988
申请日：1988-11-18
申请人： DIESEL KIKI CO
发明人： TAKAHASHI YUSUKE , TAKAGI NOBUKAZU
IPC分类号： B60H1/32 , F04B49/10 , F04C18/02 , F04C29/04
摘要： PURPOSE:To secure the primary property of a motor adequately by cooling a permanent magnet with a coolant in a freezing cycle when the temperature of the permanent magnet in a DC brushless motor to drive a scroll type compressor exceeds a specific value. CONSTITUTION:When a brushless motor 10 is driven, a scroll member 21 at the movable side rotates to a scroll member 23 at the fixed side through a driving shaft 11. As a result, a coolant is led in from a suction pipe 2, and after compressed by the both scroll members 21 and 23 while cooling a magnet 13 and a coil 17 of the motor 10, it is discharged from a discharge pipe 3. In this case, the temperature of the magnet 13 is detected by a Hall element 20, and the result is input to a control unit 19. When the detected temperature is higher than a set temperature, a solenoid 30a is controlled to convert a three- way switch valve 30. Consequently, the coolant passing through a condenser 27 is let flow to the motor 10, and the magnet 13 is cooled.

3. 发明专利

JPH02130285A AIR CONDITIONER 失效
公开(公告)号：JPH02130285A
公开(公告)日：1990-05-18
申请号：JP28030188
申请日：1988-11-08
申请人： DIESEL KIKI CO , SEIKO EPSON CORP
发明人： TAKAGI NOBUKAZU , SETO TAKESHI , ENDO KENICHI , SHIMODA TATSUYA
IPC分类号： F04C28/28 , F04C18/02 , F04C29/00 , H02K1/27 , H02K15/03 , H02K29/08 , H02P6/24
摘要： PURPOSE:To prevent the generation of abnormal noise in a compressor due to reverse revolution and the deterioration of durability by forming an electric motor in brushless dc motor type and installing a brake circuit for suppressing the reverse revolution of a rotor by exciting the winding coil of the electric motor. CONSTITUTION:A driving circuit 25 which is connected with the wiring coil 14 of an electric motor 7 through a lead wire 15 is equipped with a controller 26 which controls a PWM (pulse width modulation) transmitter 27 by the turning-ON of the driving switch or the drive stop switch of a compressor 1, predriver circuit 28 which forms a three-phase rotary magnetic field on the wiring coil 14 of the electric motor 7, according to the drive instruction signal Po supplied from the PWM transmitter 27, transistor bridge circuit 29, etc., and a brake circuit 30 for stopping a rotor 9 is provided. Therefore, though the rotor 9 tends to revolve reversely, together with a movable side scroll member 16, by the coolant high pressure on the discharge side, after the stop of drive of the compressor 1, the rotor 9 can be applied with brake control by the brake circuit 30.

4. 发明专利

JPS63285244A FUEL INJECTION DEVICE 失效
公开(公告)号：JPS63285244A
公开(公告)日：1988-11-22
申请号：JP12082987
申请日：1987-05-18
申请人： DIESEL KIKI CO
发明人： TAKAGI NOBUKAZU , OSHIZAWA HIDEKAZU
IPC分类号： F02D41/38 , F02D41/00
摘要： PURPOSE:To make it possible to precisely control pilot fuel injection and main fuel injection following the latter by controlling the time intervals of control signals for a fuel overflow solenoid valve in accordance with an output signal from a DVC sensor. CONSTITUTION:A fuel overflow solenoid valve 11 for opening and closing the passage between a pressurizing chamber which pressurizes fuel and pressure- feeds fuel into a fuel injection valve, and a return passage 15, is twice energized in accordance with control signals at a predetermined interval during one pressure-feed cycle so as to allow the fuel injection nozzle to perform pilot inject on and main injection. In this arrangement, a DVC sensor 40 delivers an actual valve closing signal and an actual valve opening signal in accordance with the motion of a needle valve 105 in the solenoid valve. Further, a control circuit 9 controls the time intervals of the control signals for the solenoid valve 11 in accordance with an output from the DVC sensor 40. With this arrangement it is possible to set the predetermined time intervals a ways to an optimum value in accordance with a change of the solenoid valve 11, thereby it is possible to control always the pilot injection and the main injection following the latter.

5. 发明专利

JPS62267545A FUEL INJECTION CONTROL DEVICE 失效
公开(公告)号：JPS62267545A
公开(公告)日：1987-11-20
申请号：JP10854886
申请日：1986-05-14
申请人： DIESEL KIKI CO
发明人： TAKAGI NOBUKAZU , ISHIKAWA MASATAKA
IPC分类号： F02D41/04 , F02B3/06 , F02D41/00 , F02D41/14 , F02D41/36 , F02D41/40
摘要： PURPOSE:To perform control so that the outputs of cylinders are uniformized with each other, by providing a means, which controls a fuel injection amount according to the maximum angle speed value of each cylinder, and a means which controls a fuel injection timing according to the minimum angular speed of each cylinder. CONSTITUTION:A first control part 17 calculates the means speed of a diesel engine 3 according to a speed signal E, computes an injection amount Q required for maintenance of a speed at a given desired value, and outputs a fuel injection amount of each cylinder as a first control signal C1. A second control part 24 outputs a second control signal C2, by means of which an electromagnetic valve 4 is controlled so that an optimum fuel injection timing responding to the running state of the diesel engine 3 can be provided, to an electromagnetic valve driving circuit 18. This constitution enables execution of control so that outputs from cylinders are uniformized with each other.

6. 发明专利

JPH01290986A SCROLL TYPE HYDRAULIC MACHINE 失效
公开(公告)号：JPH01290986A
公开(公告)日：1989-11-22
申请号：JP12150688
申请日：1988-05-18
申请人： DIESEL KIKI CO , TAMA MFG
发明人： SAITO TAKEO , TAKAGI NOBUKAZU
IPC分类号： F04C18/02 , F01C17/06
摘要： PURPOSE:To lubricate an anti-rotation mechanism sufficiently by arranging a union for sucking refrigerant between a casing motor and an upper bearing support member and providing a refrigerant flow path communicated with the union and passing refrigerant gas toward the bottom of the casing. CONSTITUTION:A suction union 35 is secured to the upper side of the stator 25 in a lower case 5 while penetrating through the case 5, and a suction pipe is coupled with the union 35 in order to suck refrigerant. A pipe 37 is coupled to the union 35 with the opening 37a at the tip thereof being bent to face with the space section 39 between adjoining salient poles 25a of the stator 25. Consequently, refrigerant gas is led from the union 35 into the space 39 to cool the stator 25 and a coil 27 thus forming a refrigerant flow path with the pipe 37.

7. 发明专利

JPS6483838A SOLENOID-VALVE CONTROLLED DISTRIBUTOR TYPE FUEL INJECTION DEVICE 失效
公开(公告)号：JPS6483838A
公开(公告)日：1989-03-29
申请号：JP24099287
申请日：1987-09-28
申请人： DIESEL KIKI CO
发明人： ISHIKAWA MASATAKA , TAKAGI NOBUKAZU
IPC分类号： F02B3/06 , F02D1/02 , F02D41/00 , F02D41/40 , F02D45/00
摘要： PURPOSE:To enable highly accurate fuel injection control by compensating target timing with a lag time detected by previous fuel injection operation to an object cylinder, and making it perform injection operation, in the fuel injection operation to each cylinder. CONSTITUTION:Target timing (target injection start timing and/or target injection end timing) is operated by a target timing operational device 51 on the basis of output of a driving state detecting device 60. A lag time is detected from output of a timing detecting device 28 and a drive pulse at fuel injection operation to each cylinder at a lag time detecting device 70, and stored in a memory device 53. Next, the lag time corresponding to a cylinder to be subjected to injection is read out of the memory means 53 on the basis of a cylinder detecting means 52, detecting a cylinder in fuel injection operation, by a selecting means 54. And, compensation by the lag time is performed to the target timing with a compensating means 55, and thereby a solenoid valve 20 of a fuel injection pump 1 is controlled according to the target timing after compensation.

8. 发明专利

JPH02130286A AIR CONDITIONER 失效
公开(公告)号：JPH02130286A
公开(公告)日：1990-05-18
申请号：JP28030288
申请日：1988-11-08
申请人： DIESEL KIKI CO , SEIKO EPSON CORP
发明人： TAKAGI NOBUKAZU , ENDO KENICHI , SETO TAKESHI , SHIMODA TATSUYA
IPC分类号： F04C18/02 , F04C29/00 , H02K29/00
摘要： PURPOSE:To reduce the size and facilitate the speed control with high efficiency by constituting a compressor from a scroll type compressor and constituting the rotor of a brushless dc motor which is directly connected with the compressor from a permanent magnet made of the rareearth element containing yttrium, transition metal and boron as basic components. CONSTITUTION:A scroll type compressor 1 is adopted as compressor, and the rotor 9 of a brushless dc motor 7 which is directly connected with the drive shaft 8 of the compressor is constituted of a permanent magnet 11 made of the rareearth element containing yttrium, transition metal, and boron as basic components. Therefore, the driving torque is increased by the brushless dc motor, and the torque variation is reduced by the scroll type compressor, and restart under any pressure condition is permitted, and the efficiency is improved. Further, since the brushless dc motor 7 is used, the size can be reduced, the speed control is facilitated, and high speed operation can be realized by the scroll type compression.

9. 发明专利

JPH01290982A SCROLL TYPE HYDRAULIC MACHINE 失效
公开(公告)号：JPH01290982A
公开(公告)日：1989-11-22
申请号：JP12150288
申请日：1988-05-18
申请人： DIESEL KIKI CO , TAMA MFG
发明人： SAITO TAKEO , TAKAGI NOBUKAZU
IPC分类号： F04C18/02 , F01C17/06
摘要： PURPOSE:To reduce the outer diameter dimension by arranging a thrust plate between a bearing support member and a movable side scroll member and making semi-circular notch sections in both thrust plates thereby providing a refrigerant gas flow path in the center. CONSTITUTION:Pins 51 are provided to fixed side and movable side thrust plates 53, 55. When a crankshaft 13A rotates, rotation of a movable side scroll member 41 is suppressed through a plurality of pins 51 arranged in the circumferential direction. Approximately semi-circular notches 53b, 55b are made respectively in the fixed side and movable side thrust plates 53, 55.

10. 发明专利

JPH01290981A SCROLL TYPE HYDRAULIC MACHINE 失效
公开(公告)号：JPH01290981A
公开(公告)日：1989-11-22
申请号：JP12150188
申请日：1988-05-18
申请人： DIESEL KIKI CO , TAMA MFG
发明人： SAITO TAKEO , TAKAGI NOBUKAZU
IPC分类号： F04C18/02 , F01C17/06
摘要： PURPOSE:To reduce direct function of thrust force onto a pin by constructing an anti-rotation mechanism with two thrust plates face contacting each other and coupling pins therefor. CONSTITUTION:A fixed side thrust plate 53 and a movable side thrust plate 55 are arranged slidably each other and pins 51 are provided to both plates 53, 55. The large diameter section 51a of each pin 51 is fitted rotatably in a hole section 53a made in the fixed side thrust plate 53 while the small diameter section 51b of each pin 51 is inserted rotatably into the hole section 55a of the movable side thrust plate 55 through a metal bearing 56. Consequently, when a crank shaft 13A rotates, rotation of the movable side scroll member 41 is suppressed through the plurality of pins 51 arranged in the circumferential direction.

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