公开(公告)号：JPS6245947A

公开(公告)日：1987-02-27

申请号：JP18454685

申请日：1985-08-22

Applicant: TOYOTA MOTOR CORP

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

IPC: F02D23/02 ,  F02D23/00 ,  F02D41/00 ,  F02D41/02 ,  F02D41/04

Abstract: PURPOSE:To prevent fuel overrichness from occurring without fail, by controlling less fuel than a fuel quantity to be set according to a driving state so as to be fed for injection in the case where a sudden decrement state in charging efficiency and an engine speed stable state in an internal combustion engine both are detected. CONSTITUTION:At the time of driving an internal combustion engine 1 provided with a supercharger 2, first of all, charging efficiency GR in suction air is found at an electronic control circuit 14 inputting each detection signal out of driving state detecting sensors including a turning angle sensor 21, an air flow meter 26, etc. This charging efficiency GR is found as the ratio between weight of the fresh air inhaled in a cylinder 20 under the atmosphereic state and weight of the fresh air accounted for stroke volume under the standard atmospheric state. And, When the charging efficiency GR is more than the specified rate and more than the specified time as well as when a sudden decrement state in load to be varied from the large value than 1 to the smaller value than 1 as compared with the specified value and an engine speed stable state are detected, a fuel injection valve 15 is controlled to spray less fuel than a fuel quantity to be set according to a driving state.

公开(公告)号：JPS61205348A

公开(公告)日：1986-09-11

申请号：JP4539185

申请日：1985-03-07

Applicant: TOYOTA MOTOR CORP

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

IPC: F02B1/04 ,  F02D41/00 ,  F02D41/14 ,  F02D45/00

Abstract: PURPOSE:To make speedy adjustment attainable, by performing an initial adjustment for a load detector on the basis of the product of an air-fuel ratio feedback compensation factor and a learning value, in case of a device which compensates the fundamental injection time set on the basis of an engine running state according to output of a oxygen sensor. CONSTITUTION:At the time of engine running, first fundamental injection time Tp is set at an electronic control circuit 20 on the basis of each output of an air flow meter 14 and a turning angle sensor 18. And, on the basis of an output signal out of the oxygen sensor 5 installed in an exhaust system, an air-fuel ratio feedback compensation factor FAF is found, and a learning value KGn, when this FAF comes to a value within the specified range, is stored according to an engine running state. And, on the basis of the product of these data Tp, FAF and KGn aforesaid, fuel injection time TAU is determined. At the above-mentioned, when a suction air quantity per engine rotation, that is, a load detector (the air flow meter 14) is initially adjusted, the product of the said data FAF and KGn is calculated, and the calculated result is adjusted so as to comes to be within the specified range.

公开(公告)号：JPS61200352A

公开(公告)日：1986-09-04

申请号：JP4002085

申请日：1985-02-28

Applicant: TOYOTA MOTOR CORP

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

IPC: F02D41/16 ,  F02D41/00

Abstract: PURPOSE:To improve reliability of an engine when it is in failure or the like, by controlling an opening of a valve unit, provided in a bypass passage detouring around a throttle valve, to be aligned to the guard opening when the opening of the valve unit is smaller than the guard opening with an engine speed being in a predetermined range. CONSTITUTION:The captioned control method, feedback controlling in accordance with an engine speed the opening of an idle speed control valve 13 in a bypass passage 12 provided so as to detour around a throttle valve 10 in an intake passage, controls an idle speed to agree with the target value. Here the method, when said valve 13 is feedback controlled further with a detected engine speed by an engine speed sensor 18 being in a predetermined range, stores in memory an opening, a predetermined degree lower than the opening of the control valve 13 in this time, as a guard opening. And when the opening of the control valve 13 by said feedback control is smaller than said guard opening, the method controls the opening of the control valve 13 so as to be aligned to said guard opening.

公开(公告)号：JPS61185627A

公开(公告)日：1986-08-19

申请号：JP2347485

申请日：1985-02-12

Applicant: TOYOTA MOTOR CORP

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

IPC: F02B29/04 ,  F02D23/00 ,  F02D23/02 ,  F02D43/00 ,  F02P5/15

Abstract: PURPOSE:To prevent the occurrence of knocking so favorably, by increasing a fuel feed quantity at a time when any drop in cooling capacity of an intercooler is detected and simultaneously making the ignition timing into timing delay. CONSTITUTION:A water level sensor 30 is installed in an intercooler 4, and when a water level of cooling water is below the specified value, it is judged that cooling capacity in the intercooler 4 comes down. And, an ignition timing delay compensation value is calculated inside an electronic control circuit 14. In addition, an increment compensation factor of a fuel injection quantity for the calculated timing delay compensation value is calculated. Thus, a fuel feed quantity is increased and simultaneously the ignition timing is made into timing delay. With this constitution, knocking is favorably prevented from occurring.

公开(公告)号：JPS61175246A

公开(公告)日：1986-08-06

申请号：JP1621785

申请日：1985-01-28

Applicant: TOYOTA MOTOR CORP

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

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

Abstract: PURPOSE:To prevent the generation of over-rich state of air-fuel ratio by reducing he fuel injection amount when the variation of the charge efficiency of an engine from the value larger than 1 to the value less than 1 for at least a prescribed time at a prescribed speed or more is detected. CONSTITUTION:In engine operation, each output signal of a water-temperature sensor 10, revolution-angle sensor 21, cylinder discriminating sensor 22, and an air flow meter 26 is input into an electronic control circuit 14, and the fuel amount corresponding to the operation state is calculated, and a fuel injection valve 15 is controlled according to the calculated fuel amount. Further, the charge efficiency GR (ratio between the weight of the fresh air inhaled into the cylinder under the atmospheric state and the weight of the fresh air which occupies the cycle capacity under the standard atmospheric state) is calculated. When the change from the state GR>1 to the state GR

公开(公告)号：JPS6196465A

公开(公告)日：1986-05-15

申请号：JP21911984

申请日：1984-10-18

Applicant: Toyota Motor Corp

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

IPC: G01M15/04 ,  G01N33/22 ,  G01N33/28

CPC classification number: G01N33/2817

Abstract: PURPOSE:To prevent surely the knocking of an engine by discriminating a low octane value fuel at the higher time of the frequency in knocking generation than the reference frequency and a high octane value fuel at the lower time and by reducing the reference frequency in case of at least one of knocking sensors being normal and another one sensor being abnormal. CONSTITUTION:Knocking sensors 32A and 32B detecting the knocking of a gasoline engine are fitted to the outer wall of a cylinder block 30 and the signal of sensors 32A and 32B is fed to an electronic control circuit 38 with other various sorts of sensors. And based on the output signal of the sensors 32A, 32B the frequency of knocking generations is compared with the reference frequency and it is judged that a low octane value fuel is used in case of higher generation frequency than the reference frequency and that a high octane value fuel is used in case of lower. The abnormality of sensors 32A, 32B is judged based on the output signal of the sensors 32A, 32B and in case of at least one of sensors 32A being normal and at least one of sensors 32B being abnormal the fuel is discriminated 38 with reducing the reference frequency.

Abstract translation: 目的：为了防止发动机的爆震，通过在爆震发生频率的较高时间区分低辛烷值燃料，比基准频率高的辛烷值燃料和较低时间的高辛烷值燃料，并且通过在 爆震传感器中的至少一个是正常的，另一个传感器是异常的。 构成：检测汽油发动机爆震的敲击传感器32A和32B安装在气缸体30的外壁上，传感器32A和32B的信号被馈送到具有其他各种传感器的电子控制电路38。 并且基于传感器32A，32B的输出信号，将爆震次数与参考频率进行比较，并且在比基准频率更高的发生频率的情况下，判断为使用低辛烷值燃料，并且高辛烷值 在较低的情况下使用价值燃料。 基于传感器32A，32B的输出信号来判断传感器32A，32B的异常，并且在传感器32A中至少有一个是正常的且传感器32B中的至少一个异常的情况下，通过减少参考来判别燃料38 频率。

公开(公告)号：JPS6189925A

公开(公告)日：1986-05-08

申请号：JP21099184

申请日：1984-10-08

Applicant: Toyota Motor Corp

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

IPC: F02B29/00 ,  F02B31/02 ,  F02D9/02 ,  F02D19/06 ,  F02D19/12 ,  F02D41/00 ,  F02D41/02 ,  F02M35/104

CPC classification number: F02M35/104 ,  F02M35/10386

Abstract: PURPOSE:To prevent a knocking in an engine which contains a sub intake passage opened and closed according to load by sensing a usage of fuel having lower octane value than expected one and opening the sub intake passage regardless of load. CONSTITUTION:An engine in which two intake valves are provided per cylinder has a sub intake passage containing an intake air controlling valve 2 which is opened at a high-load time. When an engine is operated in the normal state of a low load, the intake air controlling valve 2 is kept closed by a solenoid valve 6 which controls operating load of an actuator 4. Such engine is so prefabricated that it shall use fuel of a high octane value at an ignition timer or the like. If fuel of a low octane value is mixed during operation of the engine, a knock sensor 32 senses that knocking actions occur more intensively and frequently than in normal operation. The sensor 32 forcedly opens the intake air controlling valve 2 to reduce frequency of knocking actions, whereby stabilizing combustion state.

Abstract translation: 目的：为了防止通过检测低于预期值的低辛烷值的燃料的使用，并且打开副进气通道，而不管负载如何，通过负载来使包含副进气通道打开和关闭的发动机爆震。 构成：在每个气缸中设置两个进气阀的发动机具有副进气通道，该进气通道包含在高负载时打开的进气控制阀2。 当发动机在低负载的正常状态下操作时，进气控制阀2由控制致动器4的操作负载的电磁阀6保持关闭。这样的发动机如此预制，以使用高的燃料 点火定时器等的辛烷值。 如果在发动机操作期间混合低辛烷值的燃料，则爆震传感器32感测到爆震动作比正常操作更加集中和频繁地发生。 传感器32强制地打开进气控制阀2以降低爆震动作的频率，从而稳定燃烧状态。

公开(公告)号：JPS6187943A

公开(公告)日：1986-05-06

申请号：JP18442584

申请日：1984-09-05

Applicant: Toyota Motor Corp

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

IPC: F02D43/00 ,  F02D41/00 ,  F02D41/04 ,  F02D41/22 ,  F02P5/152

CPC classification number: F02P5/152 ,  Y02T10/46

Abstract: PURPOSE:To make an optimum increment attainable over the whole driving range, by compensating ignition timing in a timing delay direction in time of knocking occurrence, while compensating a fuel quantity to be fed to an engine for increment according to the compensated value, and making the increment value variably controllable according to a driving state. CONSTITUTION:In time of engine running, first of all, each output of a crank angle sensor 18 and an air flow sensor 24 is taken into a control circuit 20, and a basic ignition timing advance is calculated from an engine speed N and a suction air quantity Q/N per unit rotation. Next, whether knocking occurs there or not is judged from an output signal out of a knock sensor 12, and when YES is the case, the ignition timing is compensated in a timing delay direction. Then, first increment factor is calculated from a compensation value thetaki of ignition timing and the engine speed N while a second increment factor is calculated from the compensation value thetaki and the load Q/N with interpolation out of the specified table, respectively. And, a fuel injection quantity to be calculated from N and Q/N is controlled so as to be compensated for increment by each increment factor aforesaid.

Abstract translation: 目的：为了在整个行驶范围内达到最佳增量，通过根据补偿值补偿要发送到发动机的增量的燃料量，通过在发生爆震时的定时延迟方向补偿点火正时，并使 增量值根据驱动状态可变地控制。 构成：在发动机运转的时候，首先将曲柄角传感器18和空气流量传感器24的每个输出装入控制电路20，根据发动机转速N和吸力 每单位旋转空气量Q / N。 接下来，根据爆震传感器12的输出信号来判断是否发生爆震，在是的情况下，在定时延迟方向补偿点火正时。 然后，从点火正时的补偿值和发动机转速N计算出第一增量因子，同时从补偿值计算出第二增量因子，并且分别从规定的表中插入的负载Q / N。 并且，由N和Q / N计算的燃料喷射量被控制，以便通过上述每个增量因子补偿增量。

公开(公告)号：JPS6185579A

公开(公告)日：1986-05-01

申请号：JP20603184

申请日：1984-10-01

Applicant: Toyota Motor Corp

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

IPC: F02B1/04 ,  F02P5/152 ,  F02P5/153 ,  G01N33/28

CPC classification number: F02P5/1527 ,  F02B1/04 ,  F02P5/1521 ,  G01N33/2817 ,  G01N33/2829 ,  Y02T10/46

Abstract: PURPOSE:To prevent a misjudgment of fuel during quick acceleration by judging whether the spark lag correction value is the predetermined judgment value for the fuel judgment and judge the fuel being used based on it. CONSTITUTION:A spark lag correction quantity THK is determined in steps S22, S24. Whether it is in a fuel judgment region is judged in a step S26. If Yes is judged in a step S27, the process goes to a step S28, and the content C1 of a counter is added by '1'. If the first counter is '300' or less in a step 33, it is judged that much regular gasoline is mixed, and a flag (f) is set to '1' in a step S32. Accordingly, a misjudgment of fuel can be prevented.

Abstract translation: 目的：通过判断火花滞后修正值是否为燃料判断的预定判​​定值，并根据该燃料判断来判断正在使用的燃料，来防止快速加速时的燃料误判。 构成：在步骤S22，S24中确定火花滞后校正量THK。 在步骤S26中判断是否处于燃料判断区域。 如果在步骤S27中判断为是，则处理进入步骤S28，并将计数器的内容C1加上“1”。 如果在步骤33中第一个计数器为“300”以下，则判断为大量规则的汽油混合，在步骤S32将标志（f）设定为“1”。 因此，可以防止燃料的误判。

公开(公告)号：JPS6181579A

公开(公告)日：1986-04-25

申请号：JP20304684

申请日：1984-09-28

Applicant: Toyota Motor Corp

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

IPC: F02P5/152 ,  F02P5/15 ,  F02P5/153

Abstract: PURPOSE:To lessen the execution time of discrimination by skipping the discrimination once the fuel being used has been discriminated not to be that of a prescribed octane number by the later fuel discrimination after the result of fuel discrimination at the starting time of an engine has been eliminated. CONSTITUTION:In a gasoline engine specified for high-octane gasoline, the main routine started in response to the turn-on of a key switch 34 sets the initial value of a counter C counting the number of ignition between large knocks and further sets zero to the flag f for fuel discrimination. The basic ignition advance angle THB predetermined for the intake air quantity Q and the number of revolutions of engine NE and the basic fuel injection time TP are obtained, and the final ignition advance angle THF for each fuel according to either regular or high-octane gasoline is determined by the said basic ignition advance angle THB and the ignition delay angle compensation quantity THK due to knocking. In the fuel discrimination routine, once fuel has been discriminated to be regular gasoline, the execution time of discrimination is lessened by skipping this discrimination.

Abstract translation: 目的：通过在发动机开始时刻的燃料鉴别结果已经被燃烧鉴别之后通过稍后的燃料歧视歧视，通过跳过歧视来减少歧视的执行时间，一旦所使用的燃料已经被识别为不是规定的辛烷值 消除了 构成：在用于高辛烷值汽油的汽油发动机中，响应于钥匙开关34的接通而启动的主程序将计数器C的初始值设置为计数大敲击之间的点火次数并进一步设定为零 标志f为燃料歧视。 获得对进气量Q和发动机NE的转速和基本燃料喷射时间TP所确定的基本点火提前角度THB，以及根据正常或高辛烷值汽油的每种燃料的最终点火提前角度THF 由所述基本点火提前角THB和由于爆震引起的点火延迟角补偿量THK决定。 在燃料歧视程序中，一旦燃料被歧视为常规汽油，则通过跳过这种歧视来减轻歧视的执行时间。