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1. 发明专利

JPS63186946A FUEL INJECTION QUANTITY CONTROL DEVICE FOR DIESEL ENGINE 失效
公开(公告)号：JPS63186946A
公开(公告)日：1988-08-02
申请号：JP12202887
申请日：1987-05-19
申请人： NIPPON DENSO CO
发明人： NONOMURA TADASHI , MURAYAMA FUMIAKI , YAMAMOTO HIROSHI , BAN MITSURU , TANAKA YASUSHI , SUGIMOTO HIDEO , SHIOZAKI MAKOTO , MORI HOMARE , SHIRAKI KATSUYOSHI
IPC分类号： F02D41/40 , F02D41/00
摘要： PURPOSE:To prevent the abnormal action of a fuel injection quantity regulating member, and to prevent the hunting of an engine, by correcting at least one of the integral, proportional, and differential constants in a feedback system in correspondence to the width of change in the position of the regulating member, and further by maintaining it for a prescribed time. CONSTITUTION:A microcomputer 1 calculates the optimum injection quantity of fuel on the basis of the signals from various sensors which detect the operating conditions of an engine, and sends a command value to a servo amplifier 3 via a D/A converter 2. Then, the servo amplifier 3 drives a linear solenoid 5, so that the error in the actual position to a target position can be corrected, on the basis of the target position signal Vs from the D/A converter 2 and the actual position signal Vp from a rack position sensor 7. As a result, the linear solenoid 5 generates an attracting force corresponding to the current value, and drives a rack 6 as a fuel regulating member. In this case, control constants are corrected in correspondence to the width of change in the position of the rack 6, and further they are maintained for a prescribed time, so that the abnormal action of the rack 6 can be prevented.

2. 发明专利

JPH021969B2 失效
公开(公告)号：JPH021969B2
公开(公告)日：1990-01-16
申请号：JP6895081
申请日：1981-05-07
申请人： NIPPON DENSO CO
发明人： ISHII MYA , HACHITANI SHUJI , TANAKA YASUSHI
IPC分类号： F02D1/02 , F02D1/08

3. 发明专利

JPS63106355A FUEL INJECTION AMOUNT CONTROL DEVICE FOR INTERNAL COMBUSTION ENGINE 失效
公开(公告)号：JPS63106355A
公开(公告)日：1988-05-11
申请号：JP21748886
申请日：1986-09-16
申请人： NIPPON DENSO CO
发明人： BAN MITSURU , TANAKA YASUSHI , SUGIMOTO HIDEO , HORI MAKOTO , HAYASHI TETSUSHI , HACHITANI SHUJI
IPC分类号： F02D41/14 , F02D1/02 , F02D1/08 , F02D41/00 , F02D41/40 , F02M53/00 , F02M59/28
摘要： PURPOSE:To enhance the startability of an internal combustion engine, by enabling a fuel injection amount adjusting member or an actuator to be heated to a predetermined temperature by a heating means energized by an external power source during a period including the time before the start of the internal combustion engine. CONSTITUTION:A fuel injection pump 30 incorporated in a Diesel-engine 10 is driven and controlled by an actuator 50 whose a fuel injection amount adjusting member 70 such as a control rack or the like is controlled by a control circuit 40, and therefore, the amount of fuel injection is controlled. In this arrangement, an electrical heater 80 is mounted in the housing of the actuator 50 and is allowed to generate heat when it is energized by an external power source 90, to heat the actuator 50 so that the viscous resistance of fuel is lowered. As the external source 90, a home electric power source may be used, which is connected by the user to a receptacle on the vehicle side before start of the engine during a cold weather period so that the electrical heater 80 may be energized for a predetermined time.

4. 发明专利

JPS6342473A ABNORMALITY DETECTING DEVICE FOR ROTATIONAL SPEED 失效
公开(公告)号：JPS6342473A
公开(公告)日：1988-02-23
申请号：JP18744586
申请日：1986-08-08
申请人： NIPPON DENSO CO
发明人： BAN MITSURU , TANAKA YASUSHI , SUGIMOTO HIDEO , SHIOZAKI MAKOTO , MORI HOMARE , SHIRAKI KATSUYOSHI
IPC分类号： G01P3/42 , F02D41/34 , F02D45/00 , G01P3/44 , G01P3/489
摘要： PURPOSE:To improve the detection accuracy of a rotational speed or the control accuracy of an engine by calculating a pulse interval by a microcomputer and deciding whether this pulse interval is abnormally larger or smaller than the last pulse interval. CONSTITUTION:Projections and recesses of teeth of a gear for rotating speed detection which is coupled directly with a column type fuel injection pump driving shaft are detected by an electromagnetic pickup 8. Then the obtained analog output is waveform-shaped 15c and then the microcomputer 15a calculates the pulse interval tn. Then, this interval tn is compared with the (A)th multiple of the last pulse interval tn-1 and decided as a normal pulse interval when tn>AXtn-1. If not, i.e. if it is decided that tn is abnormally smaller than tn-1, the interval tn is disregarded and (n) is increased to control the internal combustion engine by using only the normal rotational speed. Further, when tn is abnormally larger, tn is substituted with 1/2tn, so an error from the actual rotational speed becomes small even when the rotational speed of the internal combustion engine has large variation, thereby improving the accuracy.

5. 发明专利

JPS6095903A LINEAR SOLENOID DEVICE 失效
公开(公告)号：JPS6095903A
公开(公告)日：1985-05-29
申请号：JP20420183
申请日：1983-10-31
申请人： NIPPON DENSO CO
发明人： KAWACHI HIDEOMI , HACHITANI SHIYUUJI , TANAKA YASUSHI
IPC分类号： H01F7/16
摘要： PURPOSE:To obtain the shifting movement characteristics of an output shaft accurately corresponding to an exciting current by a method wherein a moving core and the output shaft with which the operational condition of the core will be outputted are constituted seperately, and the sliding property of said output shaft is maintained in a fully excellent state. CONSTITUTION:An exciting coil 13 is wound around the outer circumference of a stator core 11 consisting of a magnetic material through the intermediary of a bobbin 12 consisting of an insulating material. An output shaft 14 consisting of a non-magnetic material is provided on the center shaft part of said core 11, and the shaft 14 is supported in the state wherein it is freely movable in axial direction for the bearing 15 which is provided in an inserted manner. On the position opposing to the magnetic surface of said core 11, a cylindrical moving core 18 is provided, and the core 18 is supported by a bearing 19, which will be provided coaxially on the core 11 in a freely movable manner in axial direction. A fitted spring 23 is interposed between the shaft 14 and the core 11, and the force repelling from the core 11 is made to act on the core 18 through the intermediary of the shaft 14.

6. 发明专利

JPS58190535A Control method of engine 失效
标题翻译：发动机控制方法
公开(公告)号：JPS58190535A
公开(公告)日：1983-11-07
申请号：JP7301082
申请日：1982-04-30
申请人： Nippon Denso Co Ltd
发明人： OGISO HARUHIKO , SAKA MITSUHIRO , HACHITANI SHIYUUJI , TANAKA YASUSHI
IPC分类号： F02D41/34 , F02D41/24 , F02D45/00
CPC分类号： F02D41/2409
摘要： PURPOSE:To reduce memory capacity, by obtaining accuracy of multiple bits while using multi-dimensional interpolation of a small number of bits when an engine is controlled by a control value obtained from a plural number of control parameters of the engine. CONSTITUTION:When assumed two variables x, y for control parameters for an engine, where a function f (x, y) is shown by 16 bits, the function f (x, y) is divided into a function f1 (x, y) shown by 8 bits and function f2 (x) of 16 bits as the sum. Then each value of f (x, y)=f1 (x, y)+f2 (x, y), f1 (x, y) is obtained by using a two dimensional interpolation, while a value of the function f2 (x), the expression of one variable is to be obtained by calculation. In this way, size of a map for the f1 (x, y) is not enlarged and accuracy of 16 bits as a whole can be obtained, while a time of calculation can be reduced.
摘要翻译：目的：当发动机由从发动机的多个控制参数获得的控制值控制时，通过在使用少量位的多维插值的同时获得多位精度来减小存储容量。构成：当假定用于16位显示函数f（x，y）的引擎的控制参数的两个变量x，y时，函数f（x，y）被分成函数f1（x，y）由8位表示，16位的函数f2（x）作为总和。然后通过使用二维插值获得f（x，y）= f1（x，y）+ f2（x，y），f1（x，y）的每个值，而函数f2（x）一个变量的表达式是通过计算得到的。以这种方式，f1（x，y）的映射的大小不会被扩大，并且可以获得16位整体的精度，同时可以减少计算时间。

7. 发明专利

JPS57183532A ELECTRIC SPEED GOVERNOR 失效
公开(公告)号：JPS57183532A
公开(公告)日：1982-11-11
申请号：JP6895081
申请日：1981-05-07
申请人： NIPPON DENSO CO
发明人： ISHII MIYA , HACHITANI SHIYUUJI , TANAKA YASUSHI
IPC分类号： F02D1/02 , F02D1/08
摘要： PURPOSE:To increase the attractive force of an electromagnetic actuator coupled to a link mechanism together with a fuel injection quantity control member, by providing a spring to apply force against the attractive force. CONSTITUTION:The lever 16 of a link mechanism 14 coupled to a fuel injection control member 50 is connected by a pin 15 to a coupling member 10 secured on an output rod 9 supported on the stationary core 7 of an electromagnetic actuator 3. A compressed spring 41 is placed in contact with one side of the stepped part 40 of a rod 39 slidably supported on a casing 45 secured on a speed governor casing 1. A lever 30, which is turned together with the lever 16, is coupled to the spring 41 by a roller 32 placed in contact with the other side of the stepped part 40. When the actuator 3 is supplied with electricity, the position of the member 50 is controlled and the attractive force of the rod 9 is balanced to the force of the spring 41. For that reason, the design, mounting and replacement of the spring 41 are facilitated.

8. 发明专利

JPS57168033A ELECTRIC GOVERNOR 失效
公开(公告)号：JPS57168033A
公开(公告)日：1982-10-16
申请号：JP5450881
申请日：1981-04-10
申请人： NIPPON DENSO CO
发明人： HACHITANI SHIYUUJI , NAKAMURA TETSUYA , OGISO HARUHIKO , TANAKA YASUSHI
IPC分类号： F02D41/40 , F02D1/08 , F02D31/00 , F02D41/22 , F02D41/34
摘要： PURPOSE:To make it possible to avoid the stop of Diesel engine due to abnormal condition of a detection means in a electric governor for Diesel engine by selecting either one of the normal signals of the plural number of rotation speed detection means with an electric control circuit, and use it as an injection volume control signal. CONSTITUTION:The micro-computer 2a consists of the CPU90 which calculates the aimed injection volume, the ROM which stores control programs and control constants, and the RAM for temporary storage. Signals from the rotation number detector 1b and 1b' are transformed into the pulse signals which were waveform shaped by the signal detecting parts 91 and 92 respectively, inputted after selected with change over part 93 by the MCU-command, and the pulse intervals are measured by a timer and values inversely proportional to the revolution speed are obtained. When the CPU recongnizes any abnormal condition from the latest rise up time of the revolution number detection part 91 and the set time, this selection changes over the signal change over part 93 of the micro computer 2a and inputs the signal of the alternator 1b' of the second detecting measure into MCU90.

9. 发明专利

JPH07297635A OSCILLATION CIRCUIT 失效
公开(公告)号：JPH07297635A
公开(公告)日：1995-11-10
申请号：JP9080094
申请日：1994-04-28
申请人： NIPPON DENSO CO
发明人： TANAKA YASUSHI
IPC分类号： H03B5/32 , H03B5/06
摘要： PURPOSE:To reduce the negative feedback noises which are generated from the gate elements, etc., that are connected to an oscillator when the oscillation is started and to secure the stable and satisfactory oscillation start characteristic of the oscillator. CONSTITUTION:The gate elements 10-12 are connected to an oscillator 100 which consists of a NAND gate 1, a crystal oscillator 2, etc. Then the oscillation pulses are outputted in response to the oscillation output of the oscillator 100 by the actuation of elements 10-12. The oscillator 100 starts its oscillating operation by the positive feedback function of an output signal defined to an input signal. A prescribed difference is set between the oscillating operation point voltage of the oscillator 100 and the input threshold voltage of the element 10. Thus the switching actions of elements 10-12 are suppressed when the oscillator 100 starts its oscillating operation. Therefore the negative feedback noises caused by the switching actions of elements 10-12 are reduced and the stable oscillation start characteristic is secured for the oscillator 100 with no disturbance given to the positive feedback function.

10. 发明专利

JPH02271258A POSITION DETECTOR 失效
公开(公告)号：JPH02271258A
公开(公告)日：1990-11-06
申请号：JP9426289
申请日：1989-04-13
申请人： NIPPON SOKEN , NIPPON DENSO CO
发明人： OTSUKA YOSHINORI , TANAKA YASUSHI , HATTORI TADASHI
IPC分类号： G01P3/487 , G01D5/245 , G01P3/488
摘要： PURPOSE:To make a magnetic field generating means and a magnetoresistance element hard to receive the effect on their sensitivities and accuracies even when the positioning of both of them is slightly shifted by compensating that the bias magnetic field generated from a magnetic field generating surface is diffused on the arrangement surface of the magnetoresistance element. CONSTITUTION:A housing 8 composed of a non-magnetic metal material is fixed by an inner plate 3 composed of a low thermal expansion metal through a means such as soldering, welding or press fitting. An Si-chip 7 having a varistor 6, a magnetoresistance element and a detection circuit formed thereon is bonded to the inner plate 3 by low m.p. glass or an adhesive. Further, a magnet 15 whose surface opposed to the chip 7 having the magnetoresistance element formed thereto is formed into a recessed surface is fixed to the inner plate 3 from the outside of the housing 8 by an adhesive and, after the magnet 15 and ferrite beads 13 are fixed, a molding resin material 14 is poured in the housing 8 to be cured under heating. According to the shape of the magnetic field generating surface of a magnetic field generating means, it is compensated that the bias magnetic field generated from said magnetic field generating surface is diffused on the arrangement surface of the magnetoresistance element and the bias magnetic field almost crosses the arrangement surface at a right angle.

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