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1. 发明专利

JPS6349116B2 失效
公开(公告)号：JPS6349116B2
公开(公告)日：1988-10-03
申请号：JP11716279
申请日：1979-09-11
申请人： NIPPON DENSO CO
发明人： YOSHIDA SEIETSU , NIIMI YUKIHIDE
IPC分类号： F16K31/06 , F16K31/02 , H01F7/18

2. 发明专利

JPS56138437A AIR-FUEL RATIO CONTROLLER 失效
公开(公告)号：JPS56138437A
公开(公告)日：1981-10-29
申请号：JP3974780
申请日：1980-03-28
申请人： NIPPON DENSO CO , TOYOTA MOTOR CO LTD
发明人： YOSHIDA SEIETSU , NIIMI YUKIHIDE , ITOU MASAO , SAWADA YUTAKA , DEMURA TAKAYUKI
IPC分类号： F02D41/14
摘要： PURPOSE:To maintain air-fuel ratio stably to a prescribed value of the air-fuel ratio even if the center of control for the air-fuel ratio is changed, by comparing a signal of an air-fuel ratio sensor with a reference value while comparing a signal of an engine condition sensor with a reference value further comparing both of their deviation signals. CONSTITUTION:A signal of an air-fuel ratio sensor 1 is input to the first amplifier circuit 40 and the first comparator circuit 50 in an air-fuel ratio control circuit 29 and compared with a prescribed reference value. Its output is changed its amplification degree by the amplifier circuit 40 in an arithmetic circuit 60 and input to the second comparator circuit 70. While a signal of an engine condition sensor 30 is integrated in the second amplifier circuit 80, integrating circuit 90 and the third integrating circuit 100, compared with a prescribed value in a reference value setter circuit 120 and input to the second comparator circuit 70. Then both of the above deviation values are compared in the circuit 70, and a flow regulating mechanism 28 is driven by a driver circuit 130. Further a control stopper circuit 31 ceases operation of the control circuit 29 at transient operation of an engine.

3. 发明专利

JPS55109740A CONTROL DEVICE OF AIR TO FUEL RATIO 失效
公开(公告)号：JPS55109740A
公开(公告)日：1980-08-23
申请号：JP1753379
申请日：1979-02-16
申请人： NIPPON DENSO CO
发明人： YOSHIDA SEIETSU , NIIMI YUKIHIDE
IPC分类号： F02D41/14 , F02D33/00
摘要： PURPOSE:To improve the control response property by changing the duty ratio of pulse output for controlling the ratio of air to fuel in response to revolution speed of the engine, too. CONSTITUTION:After shaping voltage from an ignition coil IG through a wave form shaping circuit 4a, the frequency of its output is converted to voltage by an F/V converter 4b and then the voltage output from the converter 4b is converted to frequency by a V/F converter 4c. Upon an output from this converter 4c, a saw tooth wave generator 4d produces a saw tooth wave with a predetermined slope. An output from an O2 sensor 3 is integrated by a ratio-of-air-to-fuel control circuit 4e. Thus obtained integration output is compared with the output from the saw wave generator 4d by a comparator 4f. An output from the comparator is amplified and then supplied to an actuator 5 to operate it.

4. 发明专利

JPS5116463A 失效
公开(公告)号：JPS5116463A
公开(公告)日：1976-02-09
申请号：JP7525975
申请日：1975-06-19
申请人： NIPPON DENSO CO
发明人： YOSHIDA SEIETSU
IPC分类号： H01C17/24 , G01R27/14 , H01L27/01 , H05K1/18

5. 发明专利

JPS5770930A Air fuel ratio controller for engine 失效
标题翻译：发动机用空燃比控制器
公开(公告)号：JPS5770930A
公开(公告)日：1982-05-01
申请号：JP14769480
申请日：1980-10-22
申请人： Nippon Denso Co Ltd , Toyota Motor Corp
发明人： KAWAI SHIROU , OGAWA TOSHIHISA , MIZUNO KISABUROU , KAWADA TOSHIAKI , YOSHIDA SEIETSU
IPC分类号： F02D41/14 , F02D21/10 , F02D33/00 , F02M23/04
摘要： PURPOSE: To prevent a catalyst container from destroying by an excessive heat by equipping a thermostatic sensor for a three-way catalyser disposed on the way of an exhaust pipe of an air fuel ratio controller so as to interrupt an opening or closing control for an air supply valve when a cylinder accidentally catches fire.
CONSTITUTION: Disposed on the way of an exhaust passage 24, a three-way catalyser 30 is equipped with a thermostatic sensor 32. When the three-way catalyser is excessively heated by an accidental fire of a cylinder, the thermostatic sensor 32 sends such an indication signal to a controller 28 as to interrupt an opening or closing motion of an air supply valve 22 placed under a control of an air fuel ratio sensor 26 and keep the air supply valve 22 opened at a certain degree. The output of the air fuel ratio sensor may be maintained leaned so that the temperature of a catalyst stops rising as high as heated.
COPYRIGHT: (C)1982,JPO&Japio
摘要翻译：目的：为了防止催化剂容器因空气燃料比控制器排气管路上的三通催化剂装备一个恒温传感器，从而中断空气的打开或关闭控制当气缸意外地发生火灾时供气阀。构成：在排气通道24的路面上，三通催化剂30配备有恒温传感器32.当三通催化剂被气缸的意外火灾过度加热时，恒温传感器32将这样的指示信号到控制器28，以便中断在空燃比传感器26的控制下放置的供气阀22的打开或关闭运动，并保持供气阀22在一定程度上打开。可以保持空燃比传感器的输出倾斜，使得催化剂的温度停止升高至高温。

6. 发明专利

JPS5769405A Solenoid valve driver 失效
标题翻译：电磁阀驱动
公开(公告)号：JPS5769405A
公开(公告)日：1982-04-28
申请号：JP14462680
申请日：1980-10-16
申请人： Nippon Denso Co Ltd
发明人： YAKURA TOSHIAKI , YOSHIDA SEIETSU
IPC分类号： F16K31/06 , G05B11/26 , H01H47/32
CPC分类号： H01H47/325
摘要： PURPOSE:To enable a small-capacity switching element to be used by increasing a current flowing through the coil of a solenoid valve by decreasing the resistance value of a resistor for current detection. CONSTITUTION:A comparator 12 compares the output (b) of an integrator 25 with the output (c) of an oscillator 20 and, when the output of the integrator is greater, outputs a high-level signal. Therefore, when an amplifier output voltage (f) corresponding to a current flowing through a coil 14 is lower than, for example, a control input voltage (a), the integral output (b) of the integrator 25 rises on the average and the conduction time of a transistor 17, therefore, increases, increasing the current flowing through the coil 14. Thus, the current is supplied to the coil 14 in proportion to the control input voltage (a).
摘要翻译：目的：通过降低电流检测电阻的电阻值，可以增加流过电磁阀的线圈的电流来使能小容量的开关元件。构成：比较器12将积分器25的输出（b）与振荡器20的输出（c）进行比较，并且当积分器的输出较大时，输出高电平信号。因此，当与流过线圈14的电流对应的放大器输出电压（f）低于例如控制输入电压（a）时，积分器25的积分输出（b）平均上升，因此，晶体管17的导通时间增加，增加流过线圈14的电流。因此，与控制输入电压（a）成比例地将电流提供给线圈14。

7. 发明专利

JPS56143325A METHOD AND APPARATUS FOR CONTROLLING AIR FUEL RATIO 失效
公开(公告)号：JPS56143325A
公开(公告)日：1981-11-09
申请号：JP4513280
申请日：1980-04-08
申请人： NIPPON DENSO CO , TOYOTA MOTOR CO LTD
发明人： YOSHIDA SEIETSU , KAWAI SHIROU , OGAWA TOSHIHISA
IPC分类号： F02D41/14 , F02D33/00 , F02M7/00
摘要： PURPOSE:To prevent variation of air fuel ratio in an internal combustion engine provided with three dimensional catalyst in its exhaust system, by using when idle conditions is detected, an averaged value of feedback control amount within a predetermined time after setting of the idling condition, as a fixed control amount from that time on. CONSTITUTION:The output of an O2 sensor 1 is applied as the input to an integrating circuit 5 after rich or lean status of fuel is determined by a judging circuit 4. The output VF of the integrating circuit 5 is applied to an actuator 12 through a switch 81 and output circuit 11 in order to adjust fuel amount or air amount for correcting air fuel ratio. Also, the output VF is connected to said output circuit 11 through switches 82, 83 and an integrating circuit 10, while idling condition is detected by an idling detecting circuit 6 through signals from a number of revolutional sensor 2 and negative pressure sensor 3. When the idling condition is detected, the switch 82 is closed. When a predetermined time has elapsed after the detection of the idling condition, the switches 81, 82 are opened and the switch 83 is closed to apply the output V1 of the integrator 10 to the output circuit 11.

8. 发明专利

JPS54120320A AIRRFUEL RATIO CONTROLLING APPARATUS 失效
公开(公告)号：JPS54120320A
公开(公告)日：1979-09-18
申请号：JP2811278
申请日：1978-03-10
申请人： NIPPON DENSO CO
发明人： NIIMI YUKIHIDE , KONDOU YOSHIHIKO , YOSHIDA SEIETSU , TABUCHI TAKESHIGE , ITOU MASAO
IPC分类号： F02D41/14 , F23N5/00
摘要： PURPOSE:To eliminate the effect of output variation due to the deterioration of an air-fuel ratio sensor and improve precision by arranging a wave-form conversion circuit which applies a bias voltage to the output of the air-fuel ratio sensor and generates the corrected air-fuel ratio voltage. CONSTITUTION:The apparatus is equipped with a wave-form conversion circuit 102 which applies a bias voltage to the output of an air-fuel ratio sensor 101 and generates the corrected air-fuel ratio voltage. Every time the corrected air-fuel ratio voltage from said wave-form conversion circuit 102 passes through the comparison standard value of a comparsion circuit 103, the bias voltage is controlled so that the corrected air-fuel ratio voltage is set at the upper side convergence value higher by a fixed value than the comparsion standard value or the lowerside convergence value lower by a fixed value than the comparison standard value.

9. 发明专利

JPS6318761B2 失效
公开(公告)号：JPS6318761B2
公开(公告)日：1988-04-20
申请号：JP816481
申请日：1981-01-22
申请人： NIPPON DENSO CO
发明人： YAKURA TOSHIAKI , SATOYAMA KENICHIRO , MORISADA KAZUTOSHI , YAMAMOTO RYOICHI , YOSHIDA SEIETSU
IPC分类号： G05B11/26 , F02D41/20 , G05B11/28 , H01H47/32

10. 发明专利

JPS58172442A AIR FUEL RATIO CONTROL DEVICE 失效
公开(公告)号：JPS58172442A
公开(公告)日：1983-10-11
申请号：JP5422382
申请日：1982-04-01
申请人： NIPPON DENSO CO , TOYOTA MOTOR CO LTD
发明人： NIIMI YUKIHIDE , YOSHIDA SEIETSU , OONAKA HIDEKI
IPC分类号： F02D41/14 , F02D45/00
摘要： PURPOSE:To improve the responsibility of air fuel ratio control at the time of the operation concerned by controlling the slope and skip of integrated voltage of an integrating circuit receiving a deviation signal between the output of an O2 sensor and a setting value when a vessel moves from a flat to highland. CONSTITUTION:A device described on the face integrates in an integrating circuit 7 an output signal from an air fuel ratio comparing circuit 6 generating a deviation output between the output of an O2 sensor 5 and a setting value corresponding to a theoretical air fuel ratio, and by said integrated voltage an actuator 3 is controlled via a driving circuit 8, allowing the air fuel ratio to be subjected to feedback control. In that case, an atmospheric pressure detection sensor 9 for detecting the external pressure of a vehicle is provided, whose output is inputted to an altitude comparing circuit 10, and compared with the setting value corresponding to setting altitude. And, by making large the slope and skip of integrated voltage from said integrating circuit 7 while controlling an integration constant circuit 11 by the deviation output of the same circuit 10, control responsibility at the time of highland running is raised.

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