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1.发明授权
公开(公告)号：US4461261A
公开(公告)日：1984-07-24
申请号：US377542
申请日：1982-05-12
申请人： Shigenori Isomura , Toshio Kondo , Yasumasa Kaji , Akio Kobayashi
发明人： Shigenori Isomura , Toshio Kondo , Yasumasa Kaji , Akio Kobayashi
CPC分类号： F02D41/26 , F02D41/2454 , F02D41/2483 , F02B2075/027
摘要： 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.
摘要翻译： 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。
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公开(公告)号：US4492202A
公开(公告)日：1985-01-08
申请号：US460856
申请日：1983-01-25
CPC分类号： F02D41/2412 , F02D31/007
摘要： 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.
摘要翻译： 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。
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公开(公告)号：US4466410A
公开(公告)日：1984-08-21
申请号：US398275
申请日：1982-07-14
CPC分类号： F02D41/263 , F02D41/2441 , F02D41/2454
摘要： In an air-fuel ratio control system for an internal combustion engine, the basic fuel injection amount computed from engine parameters such as engine speed and intake air flow is corrected by using map having air-fuel ratio compensation data stored battery back-up in accordance with the engine parameters. The compensation data is read out of the map in accordance with the parameters at the time of detection of the stable combustion state of the engine. When an output of an oxygen sensor is on lean side, a predetermined amount is added to the data thus read, while when the output of the oxygen sensor is on rich side, a predetermined amount is subtracted from the data thus read, thereby renewing the stored value.
摘要翻译： 在用于内燃机的空燃比控制系统中，根据发动机速度和进气量的发动机参数计算的基本燃料喷射量通过使用具有空燃比补偿数据的存储电池备用的映射来校正 与引擎参数。 根据检测到发动机的稳定燃烧状态时的参数，从地图读出补偿数据。 当氧传感器的输出处于倾斜侧时，将预定量添加到所读取的数据中，而当氧传感器的输出为浓侧时，从所读取的数据中减去预定量，从而更新 存储值。
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4.发明授权Closed loop mixture control using learning data resettable for fuel evaporation compensation 失效闭环混合控制采用学习数据可复位为燃料蒸发补偿
公开(公告)号：US4441473A
公开(公告)日：1984-04-10
申请号：US243514
申请日：1981-03-13
CPC分类号： F02D41/2493 , F02D41/2454 , F02D41/2441
摘要： 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.
摘要翻译： 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”。
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公开(公告)号：US4574761A
公开(公告)日：1986-03-11
申请号：US680046
申请日：1984-12-10
CPC分类号： F02D41/345 , Y02T10/44
摘要： 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.
摘要翻译： 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。
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公开(公告)号：US4475501A
公开(公告)日：1984-10-09
申请号：US348178
申请日：1982-02-12
申请人： Katsushi Kato , Shigenori Isomura , Akio Kobayashi , Toshio Kondo
发明人： Katsushi Kato , Shigenori Isomura , Akio Kobayashi , Toshio Kondo
CPC分类号： F02D41/126 , F02B2075/027
摘要： An electronic control type fuel injection system in which, at the time of engine deceleration the fuel injection is stopped, and when resuming to a normal fuel injection from the fuel injection stopped condition, if the reducing rate of the engine speed is smaller than a preset value, a smaller amount of fuel than the amount of fuel injection during normal operation as if fuel injection had not been stopped is first injected and subsequently the amount of fuel to be injected is gradually increased, while when the reducing rate of the engine speed is larger than the preset value, a larger amount of fuel than the fuel injection amount during normal operation is injected.
摘要翻译： 一种电子控制式燃料喷射系统，其中在发动机减速时燃料喷射停止，并且当从燃料喷射停止状态恢复到正常燃料喷射时，如果发动机转速的降低率小于预设值 值，与正常运转时的燃料喷射量相比，燃料喷射未停止时的燃料量少，首先进行喷射，随后喷射的燃料量逐渐增加，而当发动机转速的降低速度为 大于预设值时，喷射比正常操作期间的燃料喷射量更大的燃料量。
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公开(公告)号：US4430976A
公开(公告)日：1984-02-14
申请号：US312076
申请日：1981-10-16
CPC分类号： F02D41/263 , F02D41/1474 , F02D41/2441 , F02D41/2454 , F02B2075/027
摘要： 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.
摘要翻译： 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。
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8.发明授权
公开(公告)号：US4454847A
公开(公告)日：1984-06-19
申请号：US283914
申请日：1981-07-16
CPC分类号： F02D41/263 , F02D41/047
摘要： A method and an apparatus for controlling the air-fuel ratio in an internal combustion engine in which the calculation of the presumed amount of fuel attached to the wall of the intake port of the engine is effected for correcting the amount of the fuel supplied to the engine in order to compensate for the variation of the air-fuel ratio of the air-fuel mixture used in the combustion of the engine.
摘要翻译： 一种用于控制内燃机中的空燃比的方法和装置，其中，对发动机的进气口壁附近的燃料推定量进行计算，以校正供应给发动机的燃料的量 发动机以补偿在发动机的燃烧中使用的空气燃料混合物的空燃比的变化。
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9.发明授权Self-diagnosis apparatus in system for prevention of scattering of fuel evaporation gas 失效用于防止燃料蒸发气体散射的系统中的自诊断装置
公开(公告)号：US5284050A
公开(公告)日：1994-02-08
申请号：US863091
申请日：1992-04-03
CPC分类号： F02M25/0809
摘要： There is disclosed a self-diagnosis apparatus in which when detecting a supply abnormally (i.e., failure to lead fuel evaporation gas into an intake passage), the abnormality can be accurately detected, taking into consideration variations in the fuel gas density (variations in the ambient temperature, variations in the volatility of the fuel, and etc.) due to the residual air in a fuel tank. In the apparatus, the amount of flow of the gas from the fuel tank to a canister can be detected, and a control circuit controls a purge valve to close a fuel gas discharge passage, and in this condition the control circuit detects the amount of flow of the gas from the fuel tank to the canister. When this flow amount exceeds a set value, the control circuit controls the purge valve to close and open the discharge passage, and judges in accordance with a change in an air-fuel ratio detected at this time by an O.sub.2 sensor whether or not any abnormality exists. If the control circuit judges by this judgment that there exists abnormality, the set value of the gas flow amount is set to a value greater than said set value, and the abnormality judgment is again effected. Then, if this judgment result still indicates that abnormality exists, a warning lamp is turned on to give warning.
摘要翻译： 公开了一种自诊断装置，其中当异常地检测供应（即，不能将燃料蒸发气体引入进气通道时），可以精确地检测异常，考虑到燃料气体密度的变化（在 由于燃料箱中的残留空气，环境温度，燃料挥发性的变化等）。 在该装置中，可以检测从燃料箱到罐的气体流量，控制电路控制净化阀关闭燃料气体排出通路，在该状态下，控制电路检测出流量 从燃料箱到罐的气体。 当该流量超过设定值时，控制回路控制净化阀关闭并打开排出通道，并根据由此使用O 2传感器检测的空燃比的变化来判断是否有异常 存在 如果控制电路判断出存在异常，则将气体流量的设定值设定为大于设定值的值，再次进行异常判定。 然后，如果该判断结果仍然表示存在异常，则警告灯亮起，发出警告。
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公开(公告)号：US4646698A
公开(公告)日：1987-03-03
申请号：US760249
申请日：1985-07-29
申请人： Hidehiko Inoue , Toshio Kondo , Shigenori Isomura
发明人： Hidehiko Inoue , Toshio Kondo , Shigenori Isomura
CPC分类号： F02D41/045 , F02D41/18 , F02D41/32 , F02D41/345 , Y02T10/44
摘要： An electronically controlled fuel injection system for an internal combustion engine, the system being of the type which controls fuel injection using the charging and discharging of a capacitor and comprising engine operating parameter sensors, a capacitor, and a control unit for controlling the charging and discharging of the capacitor. The charging of the capacitor is initiated at a timing determined as a function of engine speed and throttle opening angle and the discharging thereof is initiated subsequently to the completion of the charging. The charging time period is determined by engine speed and the discharging current is determined by intake air quantity. A basic fuel injection signal is produced so as to have a pulse duration equal to the discharging time period.
摘要翻译： 一种用于内燃机的电子控制燃料喷射系统，该系统是使用电容器的充电和放电来控制燃料喷射的系统，并且包括发动机操作参数传感器，电容器和用于控制充放电的控制单元 的电容器。 电容器的充电在根据发动机转速和节气门开度角确定的时间开始，并且在充电完成之后开始放电。 充电时间由发动机转速确定，放电电流由进气量决定。 产生基本燃料喷射信号，使其具有等于放电时间段的脉冲持续时间。
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