公开(公告)号：JPS62170754A

公开(公告)日：1987-07-27

申请号：JP1217886

申请日：1986-01-24

Applicant: TOYOTA MOTOR CORP

Inventor： ANZAI KATSUSHI ,  SUEMATSU TOSHIO ,  TAKEDA YUJI ,  HARADA OSAMU

IPC: F02D43/00 ,  F02P5/145

Abstract: PURPOSE:To make it possible to maintain low the required ignition voltage, in a fuel cut condition for performing a fuel supply stop in order to prevent a over-revolution, by correcting an ignition timing set by means of an ignition timing setting means to an advance side. CONSTITUTION:A desired ignition timing corresponding to an operating condition of an internal combustion engine is set by a ignition timing setting means 2 and the ignition is performed by an ignition control means 1. Further, fuel corresponding to the operating condition is supplied to the internal combustion engine by a fuel supply control means 3. In this way, a fuel cut condition for performing the stop of the fuel supply in order to prevent the over-revolution by the fuel supply control means 3, is judged by a fuel cut condition judging means 4. Thus, in the fuel cut condition, an ignition timing set by the ignition timing setting means 2 is corrected to an advance side by an ignition timing advance correcting means 5. Therefore, it is possible to maintain low the required ignition voltage so as to prevent the leak in the ignition circuit.

公开(公告)号：JPS62118044A

公开(公告)日：1987-05-29

申请号：JP25782785

申请日：1985-11-19

Applicant: TOYOTA MOTOR CORP

Inventor： ANZAI KATSUSHI ,  TAKEDA YUJI ,  SUEMATSU TOSHIO ,  HARADA OSAMU

IPC: F02D45/00

Abstract: PURPOSE:To compute a proper fuel injection time and an ignition timing, by providing a means, limiting a load to a given maximum value in an acceleration area in a range of a given time, and a means, changing the given time and/or the given maximum value. CONSTITUTION:An airflow meter 3 measures an intake air amount of an internal-combustion engine 1, and an output signal is inputted to a control device 50. The rotation speed of an engine from a rotation angle sensor 7 is stored in the control device 50. The control device 50 is provided with a means, limiting a load to a given maximum value in an acceleration area in a range of a given time, and a means, changing the given time and/or the given maximum value according to the rotation speed of an engine. This constitution enables computation of a proper fuel injection time and ignition timing.

公开(公告)号：JPS6291658A

公开(公告)日：1987-04-27

申请号：JP22969385

申请日：1985-10-15

Applicant: TOYOTA MOTOR CORP

Inventor： TAKEDA YUJI ,  SUEMATSU TOSHIO ,  ANZAI KATSUSHI ,  HARADA OSAMU

IPC: F02P5/15

Abstract: PURPOSE:To improve the responsiveness to acceleration by allowing an ignition timing to be retarded by a corrected lag angular value which is smaller than a lag angle determined by engine temperature, when a car speed detected by a car speed detecting means is low. CONSTITUTION:The titled device includes an operating condition detecting means M2 which detects load, speed, and temperature of an internal combustion engine M1, and computes a lag angular value for in ignition timing by a lag angular value computing means M3 based on engine temperature detected by the above said means M2. And then a reference ignition timing is computed by an ignition control means M4 based on the engine load and speed, besides, the actual ignition if effected by a timing where the reference ignition timing is retarded by the computed lag angular value. In this case, a lag angular value computing means M6 is provided so as to compute a correction value for the lag angular value which is made smaller as a car speed is low, in accordance with the car speed detected by a car speed detecting means M5. And then the corrected lag angular value is outputted to the ignition control means M4 in place of the above said lag angular value.

公开(公告)号：JPS61261634A

公开(公告)日：1986-11-19

申请号：JP10150785

申请日：1985-05-15

Applicant: TOYOTA MOTOR CORP

Inventor： SUEMATSU TOSHIO ,  TAKEDA YUJI ,  ANZAI KATSUSHI ,  HARADA OSAMU

IPC: F02D23/02 ,  F02D41/00 ,  F02D41/02 ,  F02D41/12

Abstract: PURPOSE:To always permit the proper fuel-cut control by learning the set value of the engine load parameter in the case when fuel feed is suspended when a throttle valve is perfectly opened and comparing said learned value with the load parameter actually measured and carrying out fuel cut. CONSTITUTION:An engine parameter detecting means 2 for detecting the prameter related to the load of an engine 1 and a throttle-valve perfect-opening detecting means 4 for detecting the perfect opening region of a throttle valve 3 are provided. The prescribed value of the engine parameter in the case when fuel feed is suspended is learned by a learning means 5 from the engine parameter signals. The prescribed value of the engine parameter learned by the learning means 5 and the engine parameter actually measured by the engine parameter detecting means 2 are compared in a fuel feed suspension means 7, and when the latter becomes over the former, a fuel feeding means 6 is brought into stop, and fuel cut is carried out.

公开(公告)号：JPS61247867A

公开(公告)日：1986-11-05

申请号：JP8808885

申请日：1985-04-24

Applicant: TOYOTA MOTOR CORP

Inventor： HARADA OSAMU ,  ANZAI KATSUSHI ,  TAKEDA YUJI ,  SUEMATSU TOSHIO

IPC: F02P5/152 ,  F02P5/153 ,  G01L23/22

Abstract: PURPOSE:To surely determines whether knocking occurs or not to prevent pre-ignition, by compensating a constant for calculating a reference value which determines the occurrence of knocking, with the use of the output of detection for the voltage of a battery, and by holding the reference value for determination at a fixed value. CONSTITUTION:When the rotational speed of an engine falls in a specific speed range and the voltage of a battery drops in such a condition that its electrical load is turned on, noise generated from an alternator 50 is superposed on the output of detection by a knock sensor 22, and therefore, the value of background becomes excessively large. Accordingly, a process in which a constant K is turned into 0.8XK is carried out to hold a reference for determination at a fixed value which is compared with peak values. Accordingly, even if the value of background becomes excessively large, it is possible to surely determine whether knocking occurs or not, thereby it is possible to prevent the engine from falling into its pre-ignition condition.

公开(公告)号：JPS61232352A

公开(公告)日：1986-10-16

申请号：JP7467585

申请日：1985-04-09

Applicant: TOYOTA MOTOR CORP

Inventor： TAKEDA YUJI ,  SUEMATSU TOSHIO ,  HARADA OSAMU ,  ANZAI KATSUSHI

IPC: F02D41/14 ,  F02D41/00

Abstract: PURPOSE:To make the increment of a fuel supply performable so properly all the time, by lowering an upper limit of a range performing air-fuel ratio feedback control when cooling water temperature becomes more than the specified value in the case where an internal-combustion engine shifts to a running state at high load or the like. CONSTITUTION:While an internal-combustion engine (a) is running, load and speed of this engine (a) are detected by a running state detecting device (b), and that whether this load and engine speed are included within the specified range or not is judged by a judging device C. And, when YES is judged, in preference to increment control over a fuel supply with high temperature of the engine (a), an air-fuel ratio is feedback-controlled so as to make it the specified air-fuel ratio on the basis of oxygen content in exhaust gas obtainable out of the said detecting device (b). And, when the cooling water temperature detected by the detecting device (b) becomes more than the specified value, each upper limit of the load and engine speed setting the specified range belonging to a judging device (c) is lowered to some extent by a lowering device (e), thereby aiming at the enlargement of a range performing the fuel increment control.

公开(公告)号：JPS61185678A

公开(公告)日：1986-08-19

申请号：JP2347385

申请日：1985-02-12

Applicant: TOYOTA MOTOR CORP

Inventor： HARADA OSAMU ,  ANZAI KATSUSHI ,  TAKEDA YUJI ,  SUEMATSU TOSHIO

IPC: F02P5/152 ,  F02P5/153

Abstract: PURPOSE:To suppress knocking exceedingly effectively by installing an ignition- timing control means for controlling the ignition timing of an internal-combustion engine towards delayed angle or advanced angle and an ignition-timing delaying means which controls the ignition timing to the delayed angle side. CONSTITUTION:An ignition-timing control means B controls the ignition timing of an internal-combustion engine toward delayed angle or advanced angle by the signal supplied from a knocking detecting means A. An ignition-timing delaying means E is driven by the signal supplied from a sharp acceleration detecting means C and a high-load and high-revolution detecting means D and controls the ignition timing to the delayed-angle side independently of the signal supplied from the knocking detecting means A. Thus, knocking can be suppressed exceedingly effectively.

公开(公告)号：JPS6198970A

公开(公告)日：1986-05-17

申请号：JP22024084

申请日：1984-10-19

Applicant: Toyota Motor Corp

Inventor： SUEMATSU TOSHIO ,  TAKEDA YUJI ,  ANZAI KATSUSHI ,  HARADA OSAMU

IPC: F02D41/14 ,  F02D41/00 ,  F02P5/15

CPC classification number: F02P5/1508 ,  Y02T10/46

Abstract: PURPOSE:To enable an accurate idle speed control to be continually performed, by continuously obtained the mean value of an air-fuel ratio feedback correction coefficient determined in accordance with an output from an O2 sensor and controlling the ignition timing in accordance with a deviation of the mean value from the air-fuel ratio feedback correction coefficient. CONSTITUTION:When an internal-combustion engine 14 is in operation, an electronic control circuit 34 first calculates a basic fuel injection quantity tau0 in accordance with an intake air quantity Q and an engine speed N obtained by an air flow meter 2 and a rotary angle sensor 32. Next the circuit 34, when the engine is in idling operation with an idle switch 7 turned on, fetches from a RAM an air-fuel ratio feedback correction coefficient and its mean value after the basic ignition timing at idling time for the engine speed N is referred to a map, calculating a correction angle corresponding to a deviation of the both correction coefficient and the mean value. Subsequently, the circuit 34, adding the correction angle to said basic ignition timing and calculating a required ignition advance angle theta, controls an ignitor 28 in accordance with this ignition advance angle theta.

Abstract translation: 目的：通过持续获得根据O2传感器的输出确定的空燃比反馈校正系数的平均值，并根据偏差来控制点火正时，实现连续执行准确的怠速控制 来自空燃比反馈校正系数的平均值。 构成：当内燃机14运转时，电子控制电路34首先根据由空气流量计2得到的进气量Q和发动机转速N计算基本燃料喷射量τ0，旋转角 传感器32.接下来，当发动机处于怠速开关7的空转状态时，电路34从RAM中取出空燃比反馈校正系数及其在空转时的基本点火正时之后的平均值 速度N被称为地图，计算对应于两个校正系数和平均值的偏差的校正角度。 随后，将校正角添加到所述基本点火正时并计算所需的点火提前角θ的电路34根据该点火提前角θ来控制点火器28。

公开(公告)号：JPS6196158A

公开(公告)日：1986-05-14

申请号：JP21786784

申请日：1984-10-17

Applicant: Toyota Motor Corp

Inventor： SUEMATSU TOSHIO ,  TAKEDA YUJI ,  ANZAI KATSUSHI ,  HARADA OSAMU

IPC: F02D41/34 ,  F02D41/00 ,  F02D41/10 ,  F02D41/12

CPC classification number: F02D41/126 ,  F02D41/105

Abstract: PURPOSE:To improve drivability after restoration from a fuel cut, by controlling an ashnchronous injection quantity according to a span of time franging from the fuel cut to the restoration, in case of a device which performs asynchronous injection separately from synchronous injection in time of restoration from the fuel cut. CONSTITUTION:In time of car driving, stopping operation of an accelerator pedal 13, when an engine speed N to be detected by a turning angle sensor N in the state that an idle switch 12 is ON goes up beyond the specified value N1, operation of a fuel injection valve 6 is stopped by an electronic braking circuit 20 whereby fuel comes into a state of being cut. Next, with operation of a pedal 3 during a fuel cut, an idle switch 12 is turned to OFF, and the engine speed decrease, coming to N1, and when further it comes to N

Abstract translation: 目的：通过根据从燃料切割到恢复时间的时间间隔控制不间断喷射量来提高燃料切割恢复后的驾驶性能，在恢复时分别进行同步喷射的装置进行异步喷射 从燃油切断。 构成：在车辆行驶时，停止加速踏板13的动作，在空转开关12为ON的状态下，当由转向角传感器N检测的发动机转速N上升超过规定值N1时， 燃料喷射阀6被电子制动回路20停止，由此燃料进入被切断的状态。 接下来，通过在燃料切断期间操作踏板3，怠速开关12变为OFF，并且发动机转速降低到N1，并且当进一步达到N

公开(公告)号：JPS6193270A

公开(公告)日：1986-05-12

申请号：JP21401484

申请日：1984-10-12

Applicant: Toyota Motor Corp

Inventor： HARADA OSAMU ,  TAKEDA YUJI ,  SUEMATSU TOSHIO ,  ANZAI KATSUSHI

IPC: F02P5/152 ,  F02P5/153

CPC classification number: F02P5/1527 ,  Y02T10/46

Abstract: PURPOSE:To sufficiently enhance the performance of an engine, by widening and narrowing a low speed side range within a knock control range in accordance with the octane number of fuel so that the spark retardation of ignition timing is compensated in accordance with knocking. CONSTITUTION:At step S4 it is judged whether the fuel is high octane number gasoline or regular gasoline. Through steps S5, S8 it is judged whether the operation range is the knock control range or not. If it is judged to be in the knock control range, the steps S7 and S10 are taken so that the spark advance is subjected to the compensation of spark retardation. Thus, the knock control range which is accordance with the kind of fuel may be set to provide a satisfactory engine performance over the entire operation range of the engine.

Abstract translation: 目的：为了充分提高发动机的性能，通过根据燃料的辛烷值来扩大和缩小爆震控制范围内的低速侧范围，从而根据爆震来补偿点火正时的火花放电。 构成：在步骤S4中，判断燃料是高辛烷值汽油还是普通汽油。 通过步骤S5，S8，判断操作范围是否为爆震控制范围。 如果判断为爆震控制范围，则采取步骤S7和S10，使火花提前进行火花放电的补偿。 因此，可以设定与燃料种类一致的爆震控制范围，以在发动机的整个运行范围内提供令人满意的发动机性能。