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    Method and apparatus for controlling air-fuel ratio learning of an internal combustion engine
    1.
    发明授权
    Method and apparatus for controlling air-fuel ratio learning of an internal combustion engine 失效
    用于控制内燃机的空燃比学习的方法和装置

    公开(公告)号：US5638800A

    公开(公告)日：1997-06-17

    申请号：US563424

    申请日：1995-11-28

    申请人： Junichi Furuya ,  Atsushi Murai

    发明人： Junichi Furuya ,  Atsushi Murai

    IPC分类号： F02D45/00 ,  F02D41/14 ,  F02D41/16

    CPC分类号： F02D41/2454

    摘要： An object of the present invention is to carry out air-fuel ratio learning to a high accuracy even in a region such as the idling region wherein the number of acquisitions of air-fuel ratio feedback correction values within a predetermined period is small. Average values A for one fluctuation period of an air-fuel ratio feedback correction coefficient .alpha. are computed and stored in order of computation in a RAM, and an arithmetical mean value B obtained. A weighted average value C of a previous learning correction coefficient .sub.KL and the arithmetical mean value B is then obtained (C=X.multidot.B+(1-X).multidot.K.sub.L). The weighting proportion X is set larger the larger the number of acquisitions of the average value A. C is updated/set as a new learning correction coefficient K.sub.L. In this way, since the updating/setting treatment of the learning correction coefficient K.sub.L is carried out in accordance with the acquisition conditions of .alpha., then even in a region such as the idling region wherein the number of acquisitions of the average value A per predetermined period is small, updating/setting of the learning correction coefficient K.sub.L can be expedited with minimal influence from an unstable .alpha. immediately after commencing air-fuel ratio feedback control. Therefore learning opportunities similar to those for the high speed region can be provided. Moreover due to learning being expedited, the learning correction coefficient K.sub.L can have a higher reliability than for a conventional arrangement.

    摘要翻译： 本发明的目的在于，即使在预定时间段内的空燃比反馈校正值的取得次数较少的空闲区域的区域中也能够高精度地进行空燃比学习。 按照RAM中的计算顺序计算并存储空燃比反馈校正系数α的一个波动周期的平均值A，得到算术平均值B. 然后获得先前学习校正系数KL的加权平均值C和算术平均值B（C = X×B +（1-X）×KL）。 加权比例X被设定得越大，平均值A的获取次数越大.C被更新/设置为新的学习校正系数KL。 以这种方式，由于根据α的获取条件执行学习校正系数KL的更新/设置处理，所以即使在诸如怠速区域的区域中，其中每个预定的平均值A的获取次数 周期很短，学习修正系数KL的更新/设置可以在开始空燃比反馈控制之后立即从不稳定α的最小影响加速。 因此，可以提供与高速区域相似的学习机会。 此外，由于学习加速，学习校正系数KL可以具有比常规布置更高的可靠性。

    FUEL SUPPLY APPARATUS FOR ENGINE AND CONTROL METHOD OF SAME
    2.
    发明申请
    FUEL SUPPLY APPARATUS FOR ENGINE AND CONTROL METHOD OF SAME 失效
    用于发动机的燃油供应装置及其控制方法

    公开(公告)号：US20070246021A1

    公开(公告)日：2007-10-25

    申请号：US11695231

    申请日：2007-04-02

    申请人： Keiichi TAKAYANAGI ,  Junichi Furuya ,  Yoshitatsu Nakamura

    发明人： Keiichi TAKAYANAGI ,  Junichi Furuya ,  Yoshitatsu Nakamura

    IPC分类号： G01M15/00 ,  F02M65/00 ,  F02M59/36 ,  F02M37/04

    CPC分类号： F02M63/0225 ,  F02D41/222 ,  F02D2200/0602 ,  F02D2200/0604 ,  F02M37/18 ,  F02M65/003 ,  F02M2200/24

    摘要： A fuel supply apparatus for an engine in which calculation of a manipulated variable of a fuel pump in response to a deviation between a fuel pressure detected by a fuel pressure sensor and a target value is carried out, is configured in a manner such that when the fuel pressure sensor is failed, a change in the fuel pressure is estimated based on a required fuel flow amount of an engine, a discharge amount of the fuel pump and a fuel pressure detected immediately before the fuel pressure sensor is failed, so that deciding of the manipulated variable of the fuel pump is made, based on the estimation value. A method of controlling the fuel supply apparatus to realize the controlling of the fuel pump based on the manipulated variable is also disclosed.

    摘要翻译： 一种用于发动机的燃料供给装置，其中，执行响应于由燃料压力传感器检测到的燃料压力与目标值之间的偏差来计算燃料泵的操作变量的燃料供给装置， 燃料压力传感器故障，基于发动机的所需燃料流量，燃料泵的排出量和紧接在燃料压力传感器故障之前检测到的燃料压力来估计燃料压力的变化，从而决定 基于估计值来制造燃料泵的操纵变量。 还公开了一种控制燃料供应装置以实现基于操作变量的燃料泵的控制的方法。

    Method of and an apparatus for controlling the air-fuel ratio of an internal combustion engine
    5.
    发明授权
    Method of and an apparatus for controlling the air-fuel ratio of an internal combustion engine 失效
    用于控制内燃机的空燃比的方法和装置

    公开(公告)号：US5193339A

    公开(公告)日：1993-03-16

    申请号：US784395

    申请日：1991-12-31

    申请人： Junichi Furuya

    发明人： Junichi Furuya

    IPC分类号： F02D41/14

    CPC分类号： F02D41/1441 ,  F02D41/2445 ,  F02D41/2454 ,  F02D41/1456 ,  F02D41/2448 ,  F02D41/2477 ,  Y02T10/22

    摘要： An air-fuel ratio controlling apparatus carries out air-fuel ratio feedback control with the use of air-fuel ratio sensors disposed on the upsteam and downstream sides of a three-way catalytic converter. An air-fuel ratio feedback correction coefficient calculated based on an output value of the upstream air-fuel ratio sensor is corrected according to a correction quantity obtained based on an output value of the downstream air-fuel ratio sensor. This correction quantity is calculated according to a learned collective correction quantity uniformly applicable for a whole operation region, and learned regional correction quantites applicable for divided operation regions, respectively. When the learned collective correction quantity is corrected through addition, a portion added to the learned collective correction quantity is subtracted from each of the learned regional correction quantities. This subtraction is carried out only on the learned regional correction quantities of the operation regions whose degree of progress of learning is greater than a predetermined value. This arrangement improves the speed and accuracy of the air-fuel ratio learning control carried out according to the downstream air-fuel ratio sensor, and promotes the learning of an operation region in which learning opportunity is small.

    摘要翻译： PCT No.PCT / JP91 / 00650 Sec。 371日期1991年12月31日 102（e）1991年12月31日PCT日期1991年5月16日PCT。空燃比控制装置利用设置在上游侧和下游侧的空燃比传感器进行空燃比反馈控制 三元催化转化器。 根据上游空燃比传感器的输出值计算的空燃比反馈校正系数根据下游空燃比传感器的输出值得到的校正量进行校正。 该校正量根据对于整个操作区域均匀适用的学习集体校正量，以及分别适用于分割操作区域的学习区域校正量来计算。 当通过加法校正学习的集体校正量时，从学习的区域校正量的每一个中减去添加到所学习的集体校正量的部分。 该减法仅在学习进度大于预定值的操作区域的学习区域校正量上进行。 由此，能够提高根据下游空燃比传感器进行的空燃比学习控制的速度和精度，促进学习机会小的操作区域的学习。

    Apparatus for detecting intake pressure in internal combustion engine
    6.
    发明授权
    Apparatus for detecting intake pressure in internal combustion engine 失效
    用于检测内燃机中的进气压力的装置

    公开(公告)号：US5031450A

    公开(公告)日：1991-07-16

    申请号：US473036

    申请日：1990-01-31

    申请人： Shinpei Nakaniwa ,  Junichi Furuya ,  Masuo Kashiwabara

    发明人： Shinpei Nakaniwa ,  Junichi Furuya ,  Masuo Kashiwabara

    IPC分类号： F02D41/18 ,  F02D41/04 ,  G01L23/24

    CPC分类号： F02D41/045 ,  G01L23/24

    摘要： A method for detecting an intake pressure in an internal combustion engine which comprises detecting the intake pressure in the engine and at least one engine driving condition, variably setting a sampling period of the intake pressure to a sampling period, according to the engine driving condition, which is substantially different from a pulsation period of the intake pressure, sampling processing the intake pressure according to the sampling period set to set the value obtained by the sampling processing as a final detected value of the intake pressure, whereby the reliable sampling of the intake pressure is performed even if the intake pressure is pulsated.

    摘要翻译： 一种用于检测内燃机中的进气压力的方法，包括检测发动机中的进气压力和至少一个发动机驱动条件，根据发动机驱动条件将进气压力的采样周期可变地设定到采样周期， 其与进气压力的脉动周期基本上不同，根据设定的采样周期对进气压力进行采样处理，以将通过采样处理获得的值设置为进气压力的最终检测值，从而可靠地取样进气口 即使进气压力被脉动也执行压力。

    Fuel supply apparatus for engine and control method of same apparatus
    7.
    发明申请
    Fuel supply apparatus for engine and control method of same apparatus 有权
    用于发动机的燃料供应装置和同一装置的控制方法

    公开(公告)号：US20070251502A1

    公开(公告)日：2007-11-01

    申请号：US11790795

    申请日：2007-04-27

    申请人： Keiichi Takayanagi ,  Junichi Furuya

    发明人： Keiichi Takayanagi ,  Junichi Furuya

    IPC分类号： F02M65/00 ,  F02M59/36 ,  G01M15/00

    CPC分类号： F02M37/18 ,  F02D41/222 ,  F02D41/3845 ,  F02D41/3863 ,  F02D2041/2027 ,  F02D2041/223 ,  F02D2041/226 ,  F02D2041/227 ,  F02D2250/31 ,  F02M63/0225 ,  F02M2041/1477

    摘要： In a fuel supply apparatus for an engine, which is provided with a relief valve for returning fuel in a fuel pipe into a fuel tank when a fuel pressure exceeds a threshold, and also feedback controls a discharge amount of a fuel pump so that the fuel pressure detected by a pressure sensor approaches a target pressure, when the pressure sensor is failed, a duty of a PWM signal for the fuel pump is fixedly maintained at a predetermined value, and fuel injection pulse width is calculated on the assumption that the fuel pressure is held at the threshold.

    摘要翻译： 在用于发动机的燃料供给装置中，当燃料压力超过阈值时，设置有用于将燃料管中的燃料返回到燃料箱中的安全阀，并且反馈控制燃料泵的排出量，使得燃料 由压力传感器检测到的压力接近目标压力，当压力传感器故障时，燃料泵的PWM信号的占空比被固定地保持在预定值，并且燃料喷射脉冲宽度是基于燃料压力 被保持在门槛。

    Control apparatus for direct injection spark ignition type internal combustion engine
    10.
    发明授权
    Control apparatus for direct injection spark ignition type internal combustion engine 失效
    直喷式火花点火式内燃机控制装置

    公开(公告)号：US5979397A

    公开(公告)日：1999-11-09

    申请号：US106762

    申请日：1998-06-30

    申请人： Kenichi Machida ,  Junichi Furuya ,  Hiraku Ohba ,  Yuki Nakajima ,  Takamasa Ueda

    发明人： Kenichi Machida ,  Junichi Furuya ,  Hiraku Ohba ,  Yuki Nakajima ,  Takamasa Ueda

    IPC分类号： F02B17/00 ,  F02B75/12 ,  F02D41/02 ,  F02D41/04 ,  F02D41/30 ,  F02D41/34 ,  F02D41/40

    CPC分类号： F02D41/402 ,  F02D41/3023 ,  F02B2075/125 ,  F02D2041/389 ,  Y02T10/123 ,  Y02T10/44

    摘要： The present invention aims at preventing such a situation that anyone of the divided injection amounts becomes less than a minimum compensation amount for a fuel injection valve, in case of conducting a two-step injection (weakly stratified combustion) in which a part of fuel is injected during intake stroke and the remaining fuel is injected during compression stroke. To this end, at the time of instructing to conduct the two-step injection, a whole injection amount TI is divided into: an injection amount TIH for homogeneous combustion to be injected during intake stroke, and an injection amount TIS for stratified combustion to be injected during compression stroke, based on a division ratio corresponding to a target air-fuel ratio. Further, each of the injection amounts TIH and TIS after division is compared with a minimum compensation amount MIN for the fuel injection valve. Based on the result of the comparison, the injection amount, which has a smaller division ratio, is set to be zero, and the injection amount, which has a larger division ratio, is set to be the whole injection amount TI, when either one of the injection amounts TIH and TIS is judged to be less than the minimum compensation amount MIN. Alternatively, the injection amount, which has the smaller division ratio, is set to be the minimum compensation amount MIN, and the injection amount, which has the larger division ratio, is set to be the remainder obtained by subtracting the minimum compensation amount MIN from the whole injection amount TI.

    摘要翻译： 本发明的目的是防止在燃料的一部分进行两步喷射（弱分层燃烧）的情况下，分割喷射量的任何一方都变得小于燃料喷射阀的最小补偿量的情况 在进气冲程期间喷射并且在压缩冲程期间喷射剩余的燃料。 为此，在进行两步喷射的指示时，整个喷射量TI被分为：在进气冲程期间要喷射的均匀燃烧的喷射量TIH和用于分层燃烧的喷射量TIS 基于与目标空燃比对应的分配比，在压缩冲程期间喷射。 此外，将分配后的每个喷射量TIH和TIS与燃料喷射阀的最小补偿量MIN进行比较。 基于比较的结果，具有较小分配比的喷射量被设定为零，并且具有较大分割比的喷射量被设定为整个喷射量TI，当任一个 注射量TIH和TIS被判定为小于最小补偿量MIN。 或者，具有较小分割比的喷射量被设定为最小补偿量MIN，并且具有较大分割比的喷射量被设定为通过从最小补偿量MIN中减去最小补偿量MIN而获得的余数 整个注射量为TI。