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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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2.发明授权Abnormality detecting apparatus for use in fuel transpiration prevention systems 失效用于燃油蒸腾防止系统的异常检测装置
公开(公告)号：US5317909A
公开(公告)日：1994-06-07
申请号：US862507
申请日：1992-04-02
申请人： Jun Yamada , Shuji Sakakibara , Yoshihiro Okuda , Tomomi Eino , Hisashi Iida , Kiyoshi Nagata , Toshihiro Suzumura
发明人： Jun Yamada , Shuji Sakakibara , Yoshihiro Okuda , Tomomi Eino , Hisashi Iida , Kiyoshi Nagata , Toshihiro Suzumura
CPC分类号： F02M25/0809 , F02M2025/0845
摘要： An apparatus for detecting an abnormality of a fuel transpiration prevention system which includes a canister with an absorbing device and a control valve provided in a passage between a fuel tank and an intake pipe of an internal combustion engine so that a fuel gas generated within the fuel tank is absorbed by the absorbing device of the canister and introduced into the intake pipe by opening and closing the control valve in accordance with an operating state of said internal combustion engine. The apparatus includes a pressure detecting device for detecting a pressure within the fuel tank and a deviation calculating unit responsive to the output of the pressure detecting device for calculating a deviation between the pressure detected when the control valve opens the passage and the pressure detected when the control valve closes the passage. The apparatus decides an abnormality of the fuel gas supply system on the basis of the deviation calculated by the deviation calculating unit. This arrangement allows accurate abnormality detection throughout the fuel transpiration prevention system.
摘要翻译： 一种用于检测燃料蒸腾防止系统的异常的装置，其包括具有吸收装置的罐和设置在燃料箱和内燃机的进气管之间的通道中的控制阀，使得在燃料内产生的燃料气体 罐体由罐的吸收装置吸收，并通过根据所述内燃机的运转状态打开和关闭控制阀而被引入进气管。 该装置包括用于检测燃料箱内的压力的压力检测装置和响应于压力检测装置的输出的偏差计算单元，用于计算当控制阀打开通道时检测到的压力与当检测到的压力 控制阀关闭通道。 该装置基于由偏差计算单元计算的偏差来确定燃料气体供应系统的异常。 这种布置允许在整个燃料蒸腾防止系统中进行精确的异常检测。
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3.发明授权
公开(公告)号：US5279114A
公开(公告)日：1994-01-18
申请号：US996811
申请日：1992-12-23
CPC分类号： F01N11/007 , F02D41/1443 , F01N2470/14 , F01N2550/02 , Y02T10/47
摘要： Disclosed is an apparatus for detecting deterioration of a catalyst of an internal combustion engine having a plurality of cylinder banks in such a manner that the deterioration of the catalyst can be assuredly discriminated regardless of the presence of deviation of a control phase with respect to each cylinder bank. The influence of change of the air/fuel ratio can be eliminated considerably by reducing the air/fuel ratio correction coefficient for a right bank, or by also using the correction coefficient for the left bank as that for the right bank to cause the phases of them to be synchronized with each other, or by dither-controlling the right bank. Therefore, the change of the air/fuel ratio with respect to the left bank can be assuredly detected while necessitating one sub air/fuel ratio sensor. By discriminating the state of deterioration of the catalyst in accordance with results of detections made by the left air/fuel ratio sensor and the sub air/fuel ratio sensors, the deterioration of the catalyst can be assuredly discriminated regardless of the presence of deviation of control phase with respect to the two banks.
摘要翻译： 公开了一种用于检测具有多个气缸组的内燃机的催化剂的劣化的装置，使得可以可靠地区分催化剂的劣化，而不管控制阶段相对于每个气缸的偏差是否存在 银行。 空燃比变化的影响可以通过降低右岸的空燃比校正系数而得到很大的消除，也可以利用左岸的校正系数作为右岸的校正系数， 他们要彼此同步，或者通过抖动控制右边的银行。 因此，在需要一个副空气/燃料比传感器的同时，能够可靠地检测空气/燃料比相对于左岸的变化。 通过根据左空燃比传感器和副空气/燃料比传感器的检测结果来区分催化剂的劣化状态，可以可靠地区分催化剂的劣化，而不管控制的偏差是否存在 相对于两家银行。
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4.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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5.发明授权
公开(公告)号：US4517948A
公开(公告)日：1985-05-21
申请号：US515788
申请日：1983-07-21
CPC分类号： F02D41/2454 , F02D41/2487 , F02B2075/027
摘要： An apparatus for controlling an air-fuel ratio in internal combustion engines has an RPM sensor, a combustion composition sensor, an intake air sensor and so on. Detection signals from these sensors are fetched by a microprocessor. A RAM is arranged in the microprocessor and is continuously supplied with power. The RAM has a first memory area which is divided into a plurality of areas for storing correction data corresponding to operating states of the engine. All the correction data stored in the first memory area are added together and the sum is divided by a given constant so as to obtain an updated correction amount. This updated correction amount is stored in a second memory area. The updated correction amount in the second memory area reflects the correction data stored in the first memory area. Given correction data stored in the first memory area is read out corresponding to a given intake air flow, thereby enabling feedback control.
摘要翻译： 用于控制内燃机中的空燃比的装置具有RPM传感器，燃烧成分传感器，进气传感器等。 来自这些传感器的检测信号由微处理器取出。 在微处理器中布置RAM并且连续地供电。 RAM具有第一存储区域，其被划分为用于存储与发动机的操作状态相对应的校正数据的多个区域。 将存储在第一存储区域中的所有校正数据相加在一起，并且将总和除以给定常数，以获得更新的校正量。 该更新校正量存储在第二存储区域中。 第二存储区域中更新的校正量反映存储在第一存储区域中的校正数据。 根据给定的进气流量，读出存储在第一存储区域中的校正数据，从而实现反馈控制。
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公开(公告)号：US5499537A
公开(公告)日：1996-03-19
申请号：US363211
申请日：1994-12-23
CPC分类号： G01M15/11
摘要： A rotation signal outputting device outputs a rotation signal at every predetermined rotational angle of an engine output shaft. An actual measurement value calculating device measures an amount of time spent by multiple engine cylinders in rotation between predetermined rotational angles during an expansion stroke, the measurements being made based on rotation signals output by the rotation signal outputting device. The actual measurement value calculating device also calculates an actual measurement value in response to the measured time interval. A first variation amount calculating device calculates a first difference between actual measurement values in two cylinders of the engine, and calculates a first variation amount in response to the calculated first different. A second variation amount calculating device calculates a second difference between a current first variation amount and a previous first variation amount calculated during a time which precedes a time of calculation of the current first variation amount by a period equal to an integer times a crank angle of 360 degrees in the engine. The second variation amount calculating device also calculates a second variation amount in response to the calculated Second difference. A smoothing device smooths the second variation amount into a third variation amount. A consecutive misfire detecting device detects a misfiring condition in response to the third variation amount.
摘要翻译： 旋转信号输出装置以发动机输出轴的每个预定旋转角输出旋转信号。 实际测量值计算装置测量在膨胀冲程期间由预定旋转角度之间的多个发动机气缸旋转所花费的时间量，该测量值基于由旋转信号输出装置输出的旋转信号进行。 实际测量值计算装置还根据测量的时间间隔计算实际测量值。 第一变化量计算装置计算发动机的两个气缸中的实际测量值之间的第一差，并且响应于所计算的第一不同而计算第一变化量。 第二变化量计算装置计算当前第一变化量与在当前第一变化量的计算时间之前的时间内计算出的前一个第一变化量之间的第二差值等于整数倍的曲柄角 发动机360度。 第二变化量计算装置还根据计算的第二差计算第二变化量。 平滑装置将第二变化量平滑化为第三变化量。 连续失火检测装置响应于第三变化量来检测失火状态。
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7.发明授权Apparatus and method for controlling amount of fuel injected into engine cylinders 失效用于控制喷射到发动机气缸中的燃料量的装置和方法
公开(公告)号：US4705000A
公开(公告)日：1987-11-10
申请号：US752732
申请日：1985-07-08
CPC分类号： F02D41/0085 , F02B1/04 , F02D2200/1015 , F02D41/1498
摘要： In a fuel amount control apparatus arranged to determine the amount of fuel to be fed to respective cylinders so that the scattering in torque generation throughout the cylinders is suppressed, the amount of correction which is either added to or subtracted from a basic fuel amount, is computed such that a sum total of fuel amount correction factors substantially equals zero. To this end the sum total of the correction factors is first computed and is then checked whether an absolute value of the sum total is greater than a predetermined value. When greater, a given amount is either added to or subtracted from correction factors respectively provided for respective cylinders.
摘要翻译： 在燃料量控制装置中，被配置为确定要供给到各个气缸的燃料量，从而抑制了在整个气缸中产生的转矩产生的散射，补充量或从基本燃料量中减去的校正量是 计算为使得燃料量校正因子的总和大致等于零。 为此，首先计算校正因子的总和，然后检查总和的绝对值是否大于预定值。 当更大时，给定量被添加到或分别被提供给各个气缸的校正因子中。
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8.发明授权Method and apparatus for controlling amount of fuel injected into engine cylinders 失效用于控制喷射到发动机气缸中的燃料量的方法和装置
公开(公告)号：US4667634A
公开(公告)日：1987-05-26
申请号：US763989
申请日：1985-08-09
CPC分类号： F02D41/0085 , F02B1/04 , F02D2200/1015 , F02D41/1498
摘要： Fuel amount control apparatus arranged to determine the amount of fuel to be fed to respective cylinder so that the scattering in torque generation throughout the cylinders is suppressed. Correction amounts are first obtained during idling, and these correction amounts are then modified using at least one engine parameter so that they can be used not only in idle state but also other operating states. To this end, a correction factor is computed using engine speed or the like so as to modify the correction amounts thereby. As a result, a basic fuel amount is corrected by correction factors provided for respective cylinders where the correction factors are further modified to be suitable for any engine operating conditions, providing smooth rotation without uncomfortable vibrations.
摘要翻译： 燃料量控制装置，被配置为确定要供给到各个气缸的燃料量，从而抑制了整个气缸的转矩产生的散射。 首先在空转期间获得校正量，然后使用至少一个引擎参数修改这些校正量，使得它们不仅可以在空闲状态下使用，而且可以用于其他操作状态。 为此，使用发动机转速等来计算校正因子，从而修正校正量。 结果，通过为各个气缸提供校正因子来校正基本燃料量，其中校正因子被进一步修改以适合于任何发动机操作条件，提供平稳的旋转而没有不舒适的振动。
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