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1.发明授权
公开(公告)号：US4844038A
公开(公告)日：1989-07-04
申请号：US946741
申请日：1986-12-24
申请人： Akihiro Yamato , Masahiko Yakuwa
发明人： Akihiro Yamato , Masahiko Yakuwa
CPC分类号： F02D41/1474 , F02D41/1495
摘要： A method of detecting abnormality in an exhaust gas concentration sensor in an internal combustion engine equipped with a fuel supply control system which controls a quantity of fuel to be supplied to the engine in a feedback manner responsive to a value of an air-fuel ratio correction value set in response to an output signal from the sensor. The sensor output signal is monitored from the time a first predetermined period of time has elongated from the start of the engine. The sensor is diagnosed as abnormal if the output signal has continually maintained a substantially constant value over a second predetermined time period elapsed following the first predetermined time period. The first predetermined time period corresponds to a time lag in rise of the output signal. The second predetermined time period is set such that the sum of the first and second preetermined time periods is shorter than a period of time within which the sensor becomes completely activated after the start of the engine.
摘要翻译： 一种检测内燃机中的排气浓度传感器的异常的方法，所述内燃机配备有燃料供给控制系统，所述燃料供给控制系统响应于空燃比校正值而以反馈方式控制供给到发动机的燃料量 响应于来自传感器的输出信号而设定的值。 从第一预定时间段起，从发动机起动开始，监测传感器输出信号。 如果输出信号在第一预定时间段之后经过的第二预定时间段内持续保持基本上恒定的值，则传感器被诊断为异常。 第一预定时间段对应于输出信号的上升时间滞后。 第二预定时间段被设置为使得第一和第二预定时间段的总和短于在发动机起动之后传感器完全启动的时间段。
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公开(公告)号：US5461569A
公开(公告)日：1995-10-24
申请号：US36937
申请日：1993-03-25
申请人： Fumio Hara , Masahiko Yakuwa
发明人： Fumio Hara , Masahiko Yakuwa
CPC分类号： F02D41/221 , F02D41/1495 , F02D41/222 , F02M26/49 , F02M26/48 , F02M26/57 , Y02T10/40
摘要： The present invention provides a diagnostic system for an internal combustion engine which detects abnormalities of input/output objects used in controlling operation of the engine when the engine is in respective predetermined operating conditions, and carries out respective predetermined fail-safe actions when abnormalities of the input/output are detected. When an abnormality of the input/output objects was detected on the last occasion and has also been detected on the present occasion, and at the same time it is determined that a change in the operating environment of the engine has occurred between when the abnormality was detected on the last occasion and when it has been determined on the present occasion, occurrence of the abnormality is finally determined.
摘要翻译： 本发明提供一种用于内燃机的诊断系统，其在发动机处于相应的预定操作条件时检测用于控制发动机的运转中使用的输入/输出对象的异常，并且当异常发生时，执行相应的预定的故障安全动作 检测输入/输出。 当最后检测到输入/输出物体的异常并且在当前场合也被检测到，并且同时确定发动机的运行环境的变化在异常是 在最后一次检测到，当在当前情况下确定时，最终确定异常的发生。
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3.发明授权
公开(公告)号：US4628882A
公开(公告)日：1986-12-16
申请号：US779216
申请日：1985-09-23
申请人： Hidetoshi Sakurai , Masahiko Yakuwa
发明人： Hidetoshi Sakurai , Masahiko Yakuwa
CPC分类号： F02D41/009 , F02D41/222 , F02D41/345 , Y02T10/44
摘要： Fuel injections are sequentially effected into cylinders of a multicylinder internal combustion engine in predetermined sequence in synchronism with pulses of a predetermined crank angle position signal from engine rotational angle sensing means. If no TDC signal pulse is generated between an immediately preceding pulse and a present pulse of a cylinder-discriminating signal, a simultaneous fuel injections are effected into all the engine cylinders upon generation of the present pulse of the cylinder-discriminating signal. Preferably, the engine rotational angle sensing means is determined to be abnormal when the simultaneous fuel injections have been effected consecutively a predetermined number of times.
摘要翻译： 与来自发动机旋转角度检测装置的预定曲柄角位置信号的脉冲同步地，预定顺序地以多个缸内燃机的气缸顺序地进行燃料喷射。 如果在紧接在前的脉冲和气缸鉴别信号的当前脉冲之间没有产生TDC信号脉冲，则在产生气缸鉴别信号的当前脉冲时，对所有发动机气缸同时进行燃料喷射。 优选地，当同时燃料喷射已连续实施预定次数时，发动机旋转角度检测装置被确定为异常。
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4.发明授权
公开(公告)号：US5052361A
公开(公告)日：1991-10-01
申请号：US535842
申请日：1990-06-11
申请人： Hiroshi Ono , Takashi Kiyomiya , Masahiko Yakuwa
发明人： Hiroshi Ono , Takashi Kiyomiya , Masahiko Yakuwa
IPC分类号： G01N27/409 , F02D41/14 , F02D45/00 , G01N27/26
CPC分类号： F02D41/148 , F02D41/1495
摘要： Deterioration of an exhaust gas concentration sensor for an internal combustion engine is detected by integrating a difference between an output from the exhaust gas concentration sensor and a predetermined reference value which is outside a range of the output which can be assumed during normal operation of the exhaust gas concentration sensor, comparing a thus obtained integral value with a predetermined deterioration-determining value, and determining from the result of the comparision whether the exhaust gas concentration sensor is deteriorated.
摘要翻译： 通过将排气浓度传感器的输出与在排气的正常运行期间可以假定的输出范围之外的规定基准值进行积分来检测内燃机的废气浓度传感器的劣化 气体浓度传感器，将由此获得的积分值与预定的劣化判定值进行比较，根据比较结果确定废气浓度传感器是否劣化。
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5.发明授权
公开(公告)号：US4764729A
公开(公告)日：1988-08-16
申请号：US13329
申请日：1987-02-11
申请人： Masahiko Yakuwa , Takashi Satoh
发明人： Masahiko Yakuwa , Takashi Satoh
CPC分类号： H03K17/0826 , F02M19/01 , F02M3/075 , G01R31/007
摘要： An electromagnetic valve used in controlling the amount of supplementary air supplied to an internal combustion engine to control the idling operation thereof is controlled by a current controller. The actual value of current flowing through the electromagnetic valve is compared with a predetermined value when a control signal, which is applied to the controller to regulate the opening of the electromagnetic valve, and the actual value of the current do not exhibit a predetermined correlation. It is determined whether an abnormality in the current controller is a disconnection or a short circuit based on whether the actual value of the current is greater than the predetermined value.
摘要翻译： 用于控制供给内燃机的辅助空气量以控制其空转动作的电磁阀由电流控制器控制。 当施加到控制器以控制电磁阀的打开的控制信号和电流的实际值不呈现预定的相关性时，流过电磁阀的电流的实际值与预定值相比较。 基于电流的实际值是否大于预定值来确定电流控制器中的异常是断开还是短路。
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公开(公告)号：US4979143A
公开(公告)日：1990-12-18
申请号：US215622
申请日：1988-07-06
申请人： Osamu Takano , Hiroshi Kawakami , Masahiko Yakuwa
发明人： Osamu Takano , Hiroshi Kawakami , Masahiko Yakuwa
CPC分类号： G06F11/1441 , G06F1/30
摘要： A single--chip microcomputer recovers efficiently from the power-down state by means of an interrupt that bypasses RAM initialization. It the power supply fails in the power-down mode, restoration of the power supply later causes the microcomputer to reset and initialize its RAM contents.
摘要翻译： 单片机通过绕过RAM初始化的中断从有效地从掉电状态恢复。 在掉电模式下电源出现故障，电源的恢复使微电脑复位并初始化其RAM内容。
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公开(公告)号：US4892077A
公开(公告)日：1990-01-09
申请号：US193419
申请日：1988-05-12
申请人： Masahiko Yakuwa , Kikuo Tomozawa , Kazuya Kishi
发明人： Masahiko Yakuwa , Kikuo Tomozawa , Kazuya Kishi
CPC分类号： F02D41/345 , F02D41/2403 , Y02T10/44
摘要： Fuel injection is started through a first one of fuel injection valves, and a time counter counts a period of time elapsed from the start of fuel injection through the first one valve. Fuel injection is started through a second one of the fuel injection valves when a predetermined period of time elapses after the start of fuel injection through the first one valve. The fuel injection through the first one valve is terminated in response to completion of counting of the time counter, and the time counter is restarted to count a difference between a desired fuel injection period of time for the first one valve and a desired fuel injection period of time for the second one valve. The fuel injection through the second one valve is terminated in response to completion of counting of the restarted time counter.
摘要翻译： 燃料喷射通过第一个燃料喷射阀开始，并且时间计数器计数从燃料喷射开始经过第一个阀所经过的时间段。 当通过第一个阀开始燃料喷射之后经过预定时间段时，通过第二个燃料喷射阀开始燃料喷射。 响应于时间计数器的计数完成，通过第一个阀的燃料喷射被终止，并且重新启动时间计数器以计算第一个阀门的期望的燃料喷射时间段与期望的燃料喷射周期之间的差值 的时间为第二个阀。 响应于重新启动的时间计数器的计数结束，终止通过第二个阀的燃料喷射。
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公开(公告)号：US4862369A
公开(公告)日：1989-08-29
申请号：US93878
申请日：1987-09-08
申请人： Masahiko Yakuwa , Yoshio Suzuki
发明人： Masahiko Yakuwa , Yoshio Suzuki
CPC分类号： F02D41/105
摘要： An electronically-controlled fuel injection system having a synchronous counter which receives main injection time data corresponding to an amount of fuel to be injected synchronously to engine revolutions, and an asynchronous counter which receives increment injection time data corresponding to an amount of fuel to be injected at a selected time interval asynchronously to the engine revolutions, wherein the synchronous counter is operated for a period of time equal to the main injection time data upon receiving a synchronous signal which is generated synchronously to the engine revolutions, while the asynchronous counter is operated for a period of time equal to the increment injection time data upon receiving an asynchronous signal which is generated at the selected time interval, so as to open a fuel injection valve by pulses which are output from the respective counters during the operations thereof. The electronically-controlled fuel injection system is provided with timers which ad a predetermined period of time after the end of the operation of each of said respective counters, and delay means operating when, during the operation of one of the two counters, a synchronous signal or an asynchronous signal for operating the other counter has been generated to delay the input of the signal to the other counter until the timekeeping of the timer ends.
摘要翻译： 一种电子控制燃料喷射系统，具有同步计数器，其接收对应于与发动机转数同步喷射的燃料量的主喷射时间数据;以及异步计数器，其接收与要喷射的燃料量对应的增量喷射时间数据 以与发动机转数异步的选定时间间隔，其中同步计数器在接收到与发动机转数同步产生的同步信号时操作等于主喷射时间数据的时间段，而异步计数器被操作用于 在接收到在所选择的时间间隔产生的异步信号时等于增量喷射时间数据的时间段，以便在其操作期间从各个计数器输出的脉冲打开燃料喷射阀。 电子控制燃料喷射系统设置有定时器，其在每个所述相应计数器的操作结束之后约预定的时间段;以及延迟装置，当在两个计数器之一的操作期间，同步信号 或者产生用于操作另一个计数器的异步信号，以将信号的输入延迟到另一个计数器，直到定时器的计时结束为止。
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公开(公告)号：US4831536A
公开(公告)日：1989-05-16
申请号：US941755
申请日：1986-12-15
申请人： Masahiko Yakuwa , Kikuo Tomozawa
发明人： Masahiko Yakuwa , Kikuo Tomozawa
CPC分类号： F02D41/263
摘要： An engine control system includes a pulse generator for generating a synchronous pulse signal synchronously with the speed of rotation of an engine, a timer for generating a timer pulse signal of a constant period, and a microcomputer having an interrupt input terminal for receiving the pulse signals as interrupt signals and operable to start processing operations in response to the interrupt signals, so that a number of controlled objects of the engine can be controlled on the basis of data indicative of operating conditions of the engine. Data is processed in response to an interrupt caused by the synchronous pulse signal to control a first-group controlled object of the number of controlled objects and setting a flag to request processing of data items related to the first-group controlled object. Data is then processed in response to an interrupt caused by the timer pulse signal to control a second-group controlled object of the number of controlled objects and setting a flag to request processing of a data item related to the second-group controlled object. In the absence of the interrupts, a plurality of predetermined data items and the data items requested to be processed by the flags are processed.
摘要翻译： 发动机控制系统包括：脉冲发生器，用于与发动机的转速同步产生同步脉冲信号;定时器，用于产生恒定周期的定时脉冲信号;以及微计算机，具有用于接收脉冲信号的中断输入端 作为中断信号并且可操作以响应于中断信号开始处理操作，使得可以基于指示发动机的操作条件的数据来控制发动机的多个受控对象。 响应于由同步脉冲信号引起的中断来处理数据以控制受控对象数量的第一组受控对象，并设置标志以请求与第一组受控对象相关的数据项的处理。 然后响应于由定时器脉冲信号引起的中断来处理数据，以控制受控对象数量的第二组受控对象，并设置标志以请求对与第二组受控对象相关的数据项的处理。 在没有中断的情况下，处理多个预定数据项和被标志处理的数据项。
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公开(公告)号：US4964050A
公开(公告)日：1990-10-16
申请号：US193411
申请日：1988-05-12
申请人： Masahiko Yakuwa , Kikuo Tomozawa , Kazuya Kishi
发明人： Masahiko Yakuwa , Kikuo Tomozawa , Kazuya Kishi
CPC分类号： F02D41/2403 , F02D41/263
摘要： A method of controlling a plurality of electrical devices which control an operation of an internal combustion engine wherein an operation period of time required for each of the electrical devices is computed by computing means in response to operating conditions of the engine, the computed required operation period of time is counted by time-counting means, and each of the electrical devices is caused to operate during the counting. At each start of the time-counting from the computing means, a different one of the electrical devices is selected and the operation thereof is started, an interrupt signal is generated when the time-counting means has counted up, and the operation of the selected different one of the electrical devices is deenergized in response to the generation of the interrupt signal. Preferably, the time-counting means comprises a signal time counter.
摘要翻译： 一种控制多个电气设备的方法，所述多个电气设备控制内燃机的运行，其中，通过计算装置根据发动机的运行条件来计算每个电气设备所需的运行时间段，所计算的所需运行周期 的时间由计时装置计数，并且使每个电气装置在计数期间运行。 在从计算装置开始的每次计时开始时，选择不同的电气装置，并且其操作开始，当计时装置已经计数时产生中断信号，并且所选择的操作 响应于中断信号的产生，不同的一个电气设备被断电。 优选地，时间计数装置包括信号时间计数器。
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