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    • 1. 发明授权
    • Method for controlling air/fuel ratio in internal combustion engines
    • 用于控制内燃机空燃比的方法
    • US4430976A
    • 1984-02-14
    • US312076
    • 1981-10-16
    • Toshio KondoShigenori IsomuraAkio KobayashiKatsuhiko Kodama
    • Toshio KondoShigenori IsomuraAkio KobayashiKatsuhiko Kodama
    • F02B75/02F02D41/14F02D41/24F02D41/26F02D45/00F02B3/00
    • F02D41/263F02D41/1474F02D41/2441F02D41/2454F02B2075/027
    • In a feedback control system for air/fuel ratio control of an internal combustion engine, an integration correcting amount is derived from the output signal of a gas sensor indicative of the concentration of an exhaust gas component, and an engine condition correcting amount is selected from a memory in which a plurality of engine condition correcting amounts are prestored in the form of a map. The engine condition correcting amount is renewed in accordance with the variation in the value of the integration correcting amount only within a given period of time or within an interval corresponding to a given number of rotations of the engine crankshaft from an instant of detection of the variation of the gas sensor output level. Thus, the engine condition correcting amount is renewed only when the output signal level of the gas sensor is reliable. In the case that the gas sensor output level does not change for a relatively long period of time, the integration correction amount is set to a standard value, while the engine condition correcting amount is not changed, using prestored data.
    • 在用于内燃机的空气/燃料比控制的反馈控制系统中,从指示排气成分浓度的气体传感器的输出信号得出积分校正量,并且从发动机状态校正量选择 其中以地图的形式预先存储多个发动机状态校正量的存储器。 发动机状态校正量仅在给定的时间段内根据积分校正量的值的变化或在与变化的检测时刻相对应的发动机曲轴的给定转数的单位内更新 的气体传感器输出电平。 因此,仅当气体传感器的输出信号电平可靠时才更新发动机状态校正量。 在气体传感器输出电平在相当长的时间段内没有变化的情况下,使用预先存储的数据,在不改变发动机状态校正量的情况下将积分校正量设定为标准值。
    • 2. 发明授权
    • Closed loop mixture control using learning data resettable for fuel
evaporation compensation
    • 闭环混合控制采用学习数据可复位为燃料蒸发补偿
    • US4441473A
    • 1984-04-10
    • US243514
    • 1981-03-13
    • Shigenori IsomuraKatsuhiko KodamaToshio KondoAkio Kobayashi
    • Shigenori IsomuraKatsuhiko KodamaToshio KondoAkio Kobayashi
    • F02D41/34F02D41/06F02D41/14F02D45/00F02M17/00
    • F02D41/2493F02D41/2454F02D41/2441
    • A closed loop mixture control system for internal combustion engines is responsive to a signal derived from an exhaust gas sensor. The sensor signal is time-integrated in a direction depending on the level of the gas sensor output to derive a first mixture corrective setting of the control system. Second corrective settings or learning data are established for the control system in correspondence with the amount of air supplied to the engine. Each of the latter settings is varied as a function of time in a direction depending on the value of the time-varying first corrective setting relative to a reference so that the second settings are automatically updated to meet varying engine performance such as aging. One of the second corrective settings is selected in response to the detected quantity of the supplied air and multiplied by the first corrective setting to correct the basic mixture control setting of the system toward an optimum value. All of the second corrective settings are reset to appropriate values, for example, "1" at the instant the engine is started if an average value of the second settings is greater than a predetermined value to compensate for different fuel vaporizations.
    • 用于内燃机的闭环混合控制系统响应于从废气传感器得到的信号。 传感器信号根据气体传感器输出的电平在一个方向上进行时间积分,以得出控制系统的第一个混合校正设置。 与控制系统建立对应于发动机供给的空气量的第二校正设置或学习数据。 后一种设置中的每一种根据时间变化的第一校正设置的值相对于参考值的方向随时间的变化而变化,使得第二设置被自动更新以满足诸如老化的变化的发动机性能。 响应于所检测到的供给空气量而选择第二校正设置中的一个,并乘以第一校正设置,以将系统的基本混合控制设置校正为最佳值。 如果第二设置的平均值大于预定值以补偿不同的燃料蒸发,则所有第二校正设置被重置为适当的值,例如在启动发动机的时刻为“1”。
    • 4. 发明授权
    • Closed loop air/fuel ratio control using learning data each arranged not
to exceed a predetermined value
    • 使用不超过预定值的学习数据的闭环空燃比控制
    • US4461261A
    • 1984-07-24
    • US377542
    • 1982-05-12
    • Shigenori IsomuraToshio KondoYasumasa KajiAkio Kobayashi
    • Shigenori IsomuraToshio KondoYasumasa KajiAkio Kobayashi
    • F02D41/34F02B75/02F02D41/14F02D41/26F02D5/00
    • F02D41/26F02D41/2454F02D41/2483F02B2075/027
    • In a closed loop control system for air/fuel ratio control of an internal combustion engine, an integration correction factor is derived from the output signal of a gas sensor indicative of the concentration of an exhaust gas component, and an engine condition correction factor is selected from a memory in which a plurality of engine condition correction factors are prestored in the form of a table. The engine condition correction factor is renewed in accordance with the variation in the value of the integration correction factor so as to perform learning control. In order to prevent each of the engine condition correction factors from assuming an undesirable value which are far deviated from its standard, a constant or variable limit value is set. The limit value may be set by calculating some typical engine condition correction factors. The correction factors will be used to modify a basic quantity of fuel to be injected into each cylinder of the engine for feedback controlling the air/fuel ratio of the air/fuel mixture.
    • 在用于内燃机的空气/燃料比控制的闭环控制系统中,从表示排气组分浓度的气体传感器的输出信号导出积分校正因子,并且选择发动机状态校正系数 从其中以表的形式预先存储多个发动机状态校正系数的存储器。 根据积分校正因子的值的变化来更新发动机状态校正系数,以进行学习控制。 为了防止每个发动机状态校正因子假设远离其标准的不期望值,设定常数或可变极限值。 极限值可以通过计算一些典型的发动机状态校正因子来设定。 校正因子将用于改变要喷射到发动机的每个气缸中的基本燃料量,以反馈控制空气/燃料混合物的空气/燃料比。
    • 6. 发明授权
    • Fuel injection control
    • 燃油喷射控制
    • US4492202A
    • 1985-01-08
    • US460856
    • 1983-01-25
    • Toshihiko MuramatsuAkio KobayashiToshio KondoShigenori IsomuraTomomi Eino
    • Toshihiko MuramatsuAkio KobayashiToshio KondoShigenori IsomuraTomomi Eino
    • F02D41/04F02D31/00F02D41/24F02D41/32F02B3/00F02B3/04
    • F02D41/2412F02D31/007
    • A fuel injection control for an internal combustion engine having electromagnetic fuel injectors determines a basic fuel injection time width of a fuel injection pulse signal applied to the electromagnetic fuel injectors in accordance with detected conditions of engine operation parameters, stores maximum fuel injection time width values predetermined in correspondence to values of a predetermined one of the engine operation parameters, reads one of the predetermined maximum fuel injection time width values corresponding to the values of the predetermined engine operation parameter and corrects the same in accordance with the values of the other engine operation parameters, and corrects the basic fuel injection time width in accordance with the corrected predetermined maximum fuel injection time width value, thereby controlling the air-fuel ratio at a desired air-fuel ratio under every operating condition of the engine, while simultaneously preventing a misoperation of continuous fuel supply from occuring in the electromagnetic fuel injectors as before.
    • 具有电磁燃料喷射器的内燃机的燃料喷射控制根据检测到的发动机运转参数的条件来决定施加到电磁燃料喷射器的燃料喷射脉冲信号的基本燃料喷射时间宽度,存储预定的最大燃料喷射时间宽度值 对应于预定的发动机运转参数的值,读取与预定的发动机运转参数的值相对应的预定最大燃料喷射时间宽度值之一,并根据其它发动机运转参数的值进行修正 并且根据校正的预定最大燃料喷射时间宽度值来校正基本燃料喷射时间宽度,从而在发动机的每个操作条件下将空燃比控制在期望的空燃比,同时防止误动作 连续燃油 如以前那样从电磁燃料喷射器中产生。
    • 7. 发明授权
    • Electronic fuel injection control system for internal combustion engine
    • 内燃机电子燃油喷射控制系统
    • US4574761A
    • 1986-03-11
    • US680046
    • 1984-12-10
    • Shigenori IsomuraToshio KondoAkio KobayashiTakehiro Kikuchi
    • Shigenori IsomuraToshio KondoAkio KobayashiTakehiro Kikuchi
    • F02D41/00F02D41/34
    • F02D41/345Y02T10/44
    • In an electronic fuel injection control system for an internal combustion engine, a first integration circuit is responsive to an angular signal with a time period in inverse proportion to the rotational speed of the engine for integrating the first half of the time period of the angular signal and for producing a first integration signal indicative of a resultant value of the integration, a hold circuit is arranged to hold the value of the first integration signal upon lapse of the first half of the time period and to produce a hold signal of the held value and maintain it for the second half of the time period and the first half of the time period of the following angular signal, a second integration circuit is responsive to the angular signal for integrating the value of an air quantity signal indicative of the quantity of air drawn into the engine at each start of the first and second halves of the time period and for producing a second integration signal indicative of a resultant value of the integration of the value of the air quantity signal, and a signal generator is arranged to determine a fuel injection time based on the time required for arrival of the valve of the second integration signal to the level of the hold signal after each start of the first and second halves of the time period.
    • 在用于内燃机的电子燃料喷射控制系统中,第一积分电路响应角度信号,其中时间周期与发动机的转速成反比,用于积分角度信号的时间段的前半部分 并且为了产生指示积分的结果值的第一积分信号,保持电路被布置成在经过该时间段的前半部分时保持第一积分信号的值,并产生保持值的保持信号 并且将其保持在下一个时间段的后半部分和后续角度信号的时间段的前半部分中,第二积分电路响应角度信号来积分指示空气量的空气量信号的值 在时间段的第一和第二半部的每个开始处被吸入引擎,并且用于产生指示结果的第二积分信号 空气量信号的值的积分值和信号发生器被布置成基于第二积分信号的阀到达所需的时间到每次启动后的保持信号的电平来确定燃料喷射时间 的时间段的第一和第二半。