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1. 发明专利

JPS56141028A ELECTRICAL CONTROL DEVICE FOR INJECTION PUMP 失效
公开(公告)号：JPS56141028A
公开(公告)日：1981-11-04
申请号：JP4496780
申请日：1980-04-04
申请人： NIPPON DENSO CO , TOYOTA MOTOR CO LTD
发明人： YOSHIMI HIROYUKI , ITOU OSAMU , KAWAI SHIZUO , YASUURA NOBUSHI , NISHIO TERUO
IPC分类号： F02D41/40 , F02M41/12
摘要： PURPOSE:To perform more accurate programmed control of injection by operating an injection regulating member of a fuel injector in accordance with the error signals detected by comparison between actual and aimed reference value of injection. CONSTITUTION:A flow senser 8 detects effective fuel suction volume at suction input side of a fuel injection pump 7, while various running conditions such as engine r.p.m. and lever step volume for accelerator and so on are detected in a running condition detector 1 for outputting electrical signal. These detected signals are inputted to an electrical control unit 2 to operate the actual and the reference values of injection for finding the error difference between these two, and as the result, driving output corresponding to the error difference signal is generated, while an electric servomotor 5 constituting an electric servo system operates the injection regulating member 6, thereby performing the error correction. Through such a system and together with step-up in accuracy of the flow sensor 8, the programmed control of injection can be performed more accurately.

2. 发明专利

JPS61232348A AIR-FUEL RADIO CONTROLLER FOR INTERNAL-COMBUSTION ENGINE 失效
公开(公告)号：JPS61232348A
公开(公告)日：1986-10-16
申请号：JP7319985
申请日：1985-04-05
申请人： NIPPON DENSO CO
发明人： NAKATSUKA KOKEI , NISHIO TERUO
IPC分类号： F02D41/14 , F02D41/00
摘要： PURPOSE:To prevent the occurrence of a large variations in an air-fuel ratio, by detecting an air-fuel ratio feedback period and, when this period is beyond the range of the specified period, altering the specified compensation value, for increasing or decreasing a compensation factor in a feedback compensating device, to a smaller value. CONSTITUTION:A controller, bearing the above caption, judges of whether the actual air-fuel ratio detected by an air-fuel ratio detecting device 2 is smaller than a desired air-fuel ratio or not, and when judgement is NO, a first specified compensation value is added to an air-fuel ratio feedback compensation factor at every unit time till it comes to YES judgement, while when judgement is YES, there is provided with a feedback compensating device M3 which reversely subtracts a second specified compensation value from the said compensation factor at every unit time. In this case, an air-fuel feedback period is detected from processed details of the compensating device M3, and there is provided with a period judging device M6 which judges of whether this period is within the specified period range or not. And, at the time of NO judgement at the said device M6, it is made so as to be altered to a smaller value than each specified compensation value aforesaid by an integration constant altering device M7.

3. 发明专利

JPS62157246A FUEL FEED RATE CONTROL DEVICE OF INTERNAL COMBUSTION ENGINE 失效
公开(公告)号：JPS62157246A
公开(公告)日：1987-07-13
申请号：JP29839885
申请日：1985-12-27
申请人： NIPPON DENSO CO
发明人： NINOMIYA MASAKAZU , MAEDA KATSUYA , KATAOKA MASAHIRO , NISHIO TERUO
IPC分类号： F02D41/06 , F02D41/00 , F02D41/04
摘要： PURPOSE:To make it possible to control fuel feed rate for keeping optimum air-fuel ratio by controlling increments in the fuel feed rate after starting an engine commensurate with the revolutions and load conditions of the engine. CONSTITUTION:A control circuit 28, after discriminating a start based on an energizing signal of a starter motor 50, increases fuel feed rate just after the start commensurate with warm-up conditions detected with a water temperature sensor 42 and decreases as the time elapses. By compensating this feed rate increment factor after start using a basic injection time, namely an engine load condition, obtained from signals from an air flow sensor 32 and an engine revolution detected with a revolution angle sensor 38, a valve opening time of a fuel injection valve 24 is controlled. Thus, since the fuel feed rate is controlled for keeping the optimum air-fuel rotation, drive feeling is improved, an ignition plug is prevented from smoldering, and fuel consumption is reduced.

4. 发明专利

JPS63219832A INTERNAL COMBUSTION ENGINE CONTROLLER 失效
公开(公告)号：JPS63219832A
公开(公告)日：1988-09-13
申请号：JP5369387
申请日：1987-03-09
申请人： NIPPON DENSO CO
发明人： ABE TOMOAKI , NISHIO TERUO , TAKAO MITSUNORI , KIYONO MASATOSHI
IPC分类号： F02D41/04 , F01L1/34 , F01L9/04 , F02D13/02 , F02D41/00
摘要： PURPOSE:To improve the extent of driving efficiency, by dispensing with a throttle valve in a suction passage and controlling valve opening time of a suction valve according to driving conditions. CONSTITUTION:A magnetic solenoid 50 is installed in a suction valve 5, while a signal of an accelerator sensor 19 is inputted into a control unit 14 together with each signal out of a suction quantity sensor 8, an atmospheric pressure sensor 9 or the like, and a solenoid 50 is controlled. The control unit 14 operates valve opening time of the suction valve 5 corresponding to the output conformed to a driver's request from the accelerator sensor 19 and a fuel injection quantity of an injection valve 15, controlling the solenoid 50 and the injection valve 15. With this constitution, a throttle valve in a suction passage is eliminated, thus driving efficiency is improvable.

5. 发明专利

JPS62159743A AIR-FUEL RATIO CONTROL METHOD FOR INTERNAL COMBUSTION ENGINE 失效
公开(公告)号：JPS62159743A
公开(公告)日：1987-07-15
申请号：JP181086
申请日：1986-01-08
申请人： NIPPON DENSO CO
发明人： NINOMIYA MASAKAZU , MAEDA KATSUYA , KATAOKA MASAHIRO , NISHIO TERUO
IPC分类号： F02D41/14 , F02D41/00
摘要： PURPOSE:To reduce the width of a fluctuation in a correction amount and to prevent a fluctuation of engine torque, by a method wherein, when an air-fuel ratio is changed from the rich side to the lean side or the change is reversed, after the change of processing of a proportional characteristics content of a correction amount is executed, processing of a proportional characteristic content is executed. CONSTITUTION:During running of an internal combustion engine 1, based on output signals from an intake air temperature sensor 12 and a water temperature sensor 13, a correction amount K1 is computed by means of a control circuit 20 to store the result. A signal from an O2 sensor is inputted, and according to a continuing time of a rich signal and a lean signal, and a change (inversion) from the rich signal to the lean signal or reverse change, processing of an integration characteristics content and proportional characteristics content is effected, and a correction amount K2 is computed to store the result. A fundamental injection amount Tp computed based on the operation state of an engine is corrected by the correction values K1 and K2 to calculate an injection amount T. In this case, in a change of processing which is executed in response to inversion of the signals, processing of the proportional characteristics content is executed after processing of the integrating characteristics content.

6. 发明专利

JPS61286551A AIR-FUEL RATIO CONTROLLER 失效
公开(公告)号：JPS61286551A
公开(公告)日：1986-12-17
申请号：JP13063485
申请日：1985-06-14
申请人： NIPPON DENSO CO
发明人： KIMURA TAKAHIKO , NISHIO TERUO
IPC分类号： F02D41/14 , F02D41/00
摘要： PURPOSE:To enable more accurate air-fuel ratio control by deciding whether the air-fuel ratio sensor is good or not through comparison between the output signal from air-fuel ratio sensor and two different setting levels for deciding whether the air-fuel ratio is rich or lean. CONSTITUTION:In an air-fuel ratio controller where the air-fuel ratio is feedback controlled on the basis of the output signal from air-fuel ratio sensor M2 arranged in the exhaust system of internal-combustion engine M1, the output signal from said sensor M2 is compared with first and second setting levels for deciding whether the air-fuel ratio of mixture gas is rich or lean to count the traversing times n1, n2 through first and second comparing means M3, M4. The ratio n1/n2 is compared with the decision level to decide whether said sensor M2 is good or not through decision means M5. Furthermore, air-fuel ratio feedback control is executed on the basis of the comparison results of first comparing means M3 to execute or stop control with correspondence to the decision results of deciding means M5 through air-fuel ratio control means M6.

7. 发明专利

JPS60220248A AUTOMATIC SPEED CHANGE CONTROLLING METHOD OF ELECTRONIC CONTROL TYPE AUTOMATIC SPEED CHANGER 失效
公开(公告)号：JPS60220248A
公开(公告)日：1985-11-02
申请号：JP7183984
申请日：1984-04-12
申请人： NIPPON DENSO CO
发明人： NAKATSUKA KOUKEI , KIMURA TAKAHIKO , NISHIO TERUO
IPC分类号： F16H61/02 , F16H61/12 , F16H63/46 , F16H63/50
摘要： PURPOSE:To prevent an extraordinary wear of a brake disc and deterioration of riding feeling by positively carrying out a shift-down independently from an automatic preset speed change pattern in a steep downward slope. CONSTITUTION:It is judged from the position of an accelerator pedal 7, the speed of a car and the intensity of acceleration whether the car is running on a downward slope or not. With a steep downward slope, a positive shift-down is carried out independently from a preset automatic speed change pattern. By this procedure, such a braking operation as in the case of running in an ordinary driving mode becomes unnecessary, an extraordinary wear of the brake disc and deterioration of riding feeling can be prevented.

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