-
公开(公告)号：US5003955A
公开(公告)日：1991-04-02
申请号：US463438
申请日：1990-01-11
CPC分类号： F02D41/2445 , F02D41/2454 , F02D41/248 , F02B2075/027
摘要： A method of controlling the air fuel ratio in internal combustion, engines, comprising the steps of: updating first learning terms at a first learning speed in response to a signal from the air-fuel-ratio sensor and respectively storing them in a reloadable memory device, the first learning terms being provided for respective different ranges corresponding to different engine temperature and related to factors causing variation in air-fuel ratio in such a manner that the air-fuel-ratio variate of the variation varies depending upon the engine temperature; updating second learning terms at a second learning speed which is higher than the first learning speed in response to a signal from the air-fuel-ratio sensor and storing them in the reloadable memory device, the second learning terms being related to factors causing variation in air-fuel ratio in such a manner that the air-fuel-ratio variate of the variation varies in a substantially uniform manner with respect to the engine temperature; and determining the transient learning value on the basis of the first learning terms dependent on the engine temperature and stored in the memory device and of the second learning terms stored in the memory device, and correcting the transient correction value in accordance with the transient learning value thus determined.
-
公开(公告)号：US5154053A
公开(公告)日：1992-10-13
申请号：US690825
申请日：1991-04-26
申请人： Kazumi Ishida , Hiroshi Haraguchi , Toshio Kondo
发明人： Kazumi Ishida , Hiroshi Haraguchi , Toshio Kondo
CPC分类号： F02D41/1441 , F01N2240/20 , F02B1/04
摘要： An air-fuel ratio control apparatus in which an air-fuel ratio of a mixture gas supplied to an engine, especially, a gas engine, is controlled in accordance with an output signal of each of oxygen concentration sensors disposed in upper and lower streams of an exhaust gas catalyzer of the engine. The output signal of the oxygen concentration sensor disposed on the upper stream side of the catalyzer is provided as one input signal of an air-fuel ratio control unit and the output signal of the oxygen concentration sensor disposed on the lower stream side of the catalyzer is provided as an input signal of an output signal correction amount determination unit, respectively. A mixing member for mixing an exhaust gas is disposed in an upper stream of each oxygen concentration sensor to detect the concentration of oxygen in the exhaust gas which is well mixed. The air-fuel ratio control unit controls an air-fuel ratio of a mixture gas in accordance with the output signal of the oxygen concentration sensor disposed on the upper stream side of the catalyzer and an output signal correction amount which is an output signal of the output signal correction amount determination unit. Since the exhaust gas is sufficiently mixed by the mixing member, variations of a measured value caused by the attachment position of each oxygen concentration sensor ar eliminated, thereby making it possible to control the air-fuel ratio of the mixture gas to a value close to a theoretical air-fuel ratio with a satisfactory precision.
摘要翻译： 一种空燃比控制装置，其中，根据设置在上游和下游的各个氧浓度传感器的输出信号来控制供应到发动机，特别是燃气发动机的混合气体的空燃比 发动机的废气催化器。 设置在催化剂的上游侧的氧浓度传感器的输出信号被设置为空燃比控制单元的一个输入信号，并且设置在催化器的下游侧的氧浓度传感器的输出信号为 分别作为输出信号校正量确定单元的输入信号提供。 在每个氧浓度传感器的上游设置有用于混合排气的混合部件，以检测排出气体中的氧气的浓度。 空燃比控制单元根据设置在催化剂的上游侧的氧浓度传感器的输出信号和作为输出信号的输出信号的输出信号校正量来控制混合气体的空燃比 输出信号校正量确定单元。 由于废气通过混合部件充分混合，消除了由每个氧浓度传感器ar的安装位置引起的测量值的变化，从而可以将混合气体的空燃比控制在接近于 理论空燃比具有令人满意的精度。
-
公开(公告)号：US06712053B2
公开(公告)日：2004-03-30
申请号：US10229284
申请日：2002-08-28
IPC分类号： F02D4100
CPC分类号： F02D41/0052 , F02D23/02 , F02D41/0072 , F02D41/1458 , F02D2200/0402 , F02M26/05 , F02M26/10 , Y02T10/144 , Y02T10/47
摘要： An O2 amount in the intake air is determined based on a fresh air and an EGR gas. A consumed O2 amount is determined with a command injection amount Qr. Then, the consumed O2 amount is subtracted from the O2 amount in the intake air to obtain an exhaust O2 amount. An exhaust O2 concentration is estimated based on the exhaust O2 amount. According to the invention, the system is not affected by a delay for the exhaust gas to reach an O2 sensor and a delay of the chemical reaction in the O2 sensor. Therefore, the exhaust O2 concentration can be highly precisely estimated compare to the case in which the exhaust O2 concentration is detected by the O2 sensor.
摘要翻译： 基于新鲜空气和EGR气体来确定进气中的O2量。 用指令喷射量Qr确定消耗的O2量。 然后，从进气中的O 2量中减去消耗的O 2量，以获得排气O 2量。 基于排气O 2量估计排气O 2浓度。 根据本发明，该系统不受排气到达O2传感器的延迟和O2传感器中的化学反应的延迟的影响。 因此，与O2传感器检测到排气O2浓度的情况相比，可以高精度地估计排气O 2浓度。
-
4.发明授权Temperature predicting system for internal combustion engine and temperature control system including same 失效内燃机温度预报系统及包括温度控制系统的温度控制系统
公开(公告)号：US5544639A
公开(公告)日：1996-08-13
申请号：US298585
申请日：1994-08-30
CPC分类号： F01N9/005 , F02D41/1401 , F02D41/1446 , F02D41/28 , F02D2041/1415 , F02D2041/1423 , F02D2041/1431 , F02D2041/1433 , F02D2041/1434 , Y02T10/47
摘要： A temperature projecting system includes a temperature sensor for monitoring a temperature of an objective portion where the temperature changes depending on an engine operating condition. The temperature projecting system projects an actual temperature of the objective portion based on the monitored temperature but free of a first-order lag of the temperature sensor. A temperature control system includes the temperature projecting system. The temperature control system derives a correction amount for a basic control amount of an actuator based on a difference between the projected actual temperature and a target temperature. The basic control amount is corrected by the correction amount to derive a corrected control amount which controls the engine operating condition and thus the temperature of the objective portion.
摘要翻译： 温度投影系统包括温度传感器，用于监视温度根据发动机工作状态而变化的目标部分的温度。 温度投影系统基于所监视的温度来投影物镜部分的实际温度，但没有温度传感器的一阶滞后。 温度控制系统包括温度投影系统。 温度控制系统根据投影实际温度和目标温度之间的差异，得出致动器的基本控制量的校正量。 通过校正量来校正基本控制量，从而导出控制发动机工作状态和因此目标部分的温度的校正控制量。
-
公开(公告)号：US5251438A
公开(公告)日：1993-10-12
申请号：US916268
申请日：1992-07-21
申请人： Kazumi Ishida , Hiroshi Haraguchi , Toshio Kondo
发明人： Kazumi Ishida , Hiroshi Haraguchi , Toshio Kondo
CPC分类号： F02D41/1441 , F01N2240/20 , F02B1/04
摘要： An air-fuel ratio feedback control apparatus for a gas engine. A mixer mixes intake air and a fuel gas. A subsidiary supply path supplies at least one of the intake air and the fuel gas downstream of the mixer. Oxygen concentration sensors detect a concentration of oxygen in an exhaust gas; and operation condition detectors detect operating conditions of the gas engine. A basic amount setting unit sets a basic amount of at least one of the intake air and the fuel gas supplied through the subsidiary supply path. A correction amount setting unit sets a correction amount proportional to a total fuel gas supply rate, and a control amount setting unit for setting a control amount of at least one of the intake air and the fuel gas supplied through the subsidiary supply path by adding the basic amount and the correction amount together, whereby the air-fuel ratio of the gas engine can be controlled at a desired value even when a bypass supply ratio of the fuel gas varies.
摘要翻译： 一种用于燃气发动机的空燃比反馈控制装置。 混合器混合进气和燃气。 辅助供应路径在混合器下游供应进气和燃料气体中的至少一个。 氧浓度传感器检测废气中的氧浓度; 并且操作条件检测器检测燃气发动机的运行状况。 基本量设定单元设定通过辅助供给路径供给的吸入空气和燃料气体中的至少一个的基本量。 校正量设定单元设定与总燃料气体供给量成比例的校正量，以及控制量设定单元，用于设定通过辅助供给路径供给的吸入空气和燃料气体中的至少一个的控制量， 基本量和校正量，由此即使当燃料气体的旁路供应比变化时，也可以将气体发动机的空燃比控制在期望值。
-
公开(公告)号：US5090199A
公开(公告)日：1992-02-25
申请号：US626829
申请日：1990-12-13
申请人： Kenji Ikuta , Toshio Kondo , Hiroshi Haraguchi
发明人： Kenji Ikuta , Toshio Kondo , Hiroshi Haraguchi
CPC分类号： F02D41/1401 , F02D41/1441 , F02D41/1479 , F02D2041/1409 , F02D2041/1415 , F02D2041/1418 , F02D2041/1433 , F02D41/1456
摘要： An air-fuel ratio control apparatus for an engine for controlling a fuel injection amount so that an air-fuel ratio of a mixture gas which is supplied to the engine is set to a stoichiometric air-fuel ratio is disclosed. The apparatus has a first oxygen concentration sensor on the upstream side of a catalyst arranged in an exhaust pipe of the engine and a second oxygen concentration sensor on the downstream side, respectively. The first sensor gives to the apparatus a first linear detection signal for the air-fuel ratio of the mixture gas. The second sensor gives to the apparatus a second detection signal indicating whether the air-fuel ratio of the mixture gas is rich or lean for the stoichiometric air-fuel ratio. A target air-fuel ratio is set in accordance with the second detection signal and the first detection signal and the target air-fuel ratio are compared, thereby controlling a fuel injection amount. Thus, a deviation between the actual air-fuel ratio and the first detection signal can be accurately corrected and the air-fuel ratio can be accurately controlled to a value in a region where a high purification factor of the catalyst is derived.
摘要翻译： 公开了一种用于控制燃料喷射量的发动机的空燃比控制装置，使得供给发动机的混合气体的空燃比被设定为理论空燃比。 该装置在布置在发动机的排气管中的催化剂的上游侧具有第一氧浓度传感器，在下游侧具有第二氧浓度传感器。 第一传感器向装置提供混合气体的空燃比的第一线性检测信号。 第二传感器给予装置第二检测信号，其指示混合气体的空燃比对于化学计量空燃比是富还是贫。 根据第二检测信号设定目标空燃比，并比较第一检测信号和目标空燃比，由此控制燃料喷射量。 因此，可以精确地校正实际空燃比与第一检测信号之间的偏差，并且可以将空燃比精确地控制为导致催化剂的净化系数高的区域的值。
-
7.发明授权Engine torque control apparatus and method for adjusting engine torque control apparatus 有权发动机转矩控制装置及调整发动机转矩控制装置的方法公开(公告)号：US07513245B2
公开(公告)日：2009-04-07
申请号：US11954303
申请日：2007-12-12
CPC分类号： F02D41/0055 , F02D41/0065 , F02D41/1475 , F02D41/40 , F02D2250/21 , Y02T10/47
摘要： An engine torque control apparatus is applied to an engine control system comprising an engine for rotating an output shaft by using torque generated through combustion in cylinders. In the apparatus, exhaust gas passing through an exhaust passage of the engine is partially recirculated into an intake passage of the engine. Also, variable control is conducted in the apparatus, when an air-fuel ratio indicating a proportion between air and fuel supplied into the cylinders of the engine is changed to a leaner air-fuel ratio, so that torque parameters for increasing/decreasing output torque of the engine can be variably controlled. As a result, torque fluctuation associated with a temporarily changing recirculated uncombusted fuel quantity can be cancelled in a manner suitable for the temporarily changing recirculated uncombusted fuel quantity, at least during a predetermined period immediately after timing for changing the air-fuel ratio.
摘要翻译： 发动机扭矩控制装置应用于发动机控制系统，该发动机控制系统包括用于通过使用通过气缸中的燃烧产生的转矩使输出轴旋转的发动机。 在该设备中，通过发动机的排气通道的排气部分地再循环到发动机的进气通道中。 此外，当将表示供给到发动机的气缸中的空气和燃料之间的比例的空燃比变更为更稀的空燃比时，在设备中进行可变控制，从而使输出扭矩增加/减小的转矩参数 的发动机可以变动控制。 结果，至少在紧随着改变空燃比的定时之后的预定时间段内，可以以适合于暂时改变再循环未燃燃料量的方式来消除与临时改变的再循环未燃燃料量相关联的扭矩波动。
-
公开(公告)号：US20080183368A1
公开(公告)日：2008-07-31
申请号：US11902870
申请日：2007-09-26
IPC分类号： F02D41/30
CPC分类号： F02D41/0275 , F02D41/40 , F02D2250/28 , Y02T10/44
摘要： A fuel injection controller of an internal combustion engine decreases a target intake quantity stepwise and increases an opening degree command value of an EGR valve stepwise when the controller switches control to rich combustion control. Accordingly, an intake quantity gradually decreases and an EGR quantity gradually increases, so an oxygen quantity flowing into a combustion chamber (cylinder inflow oxygen quantity) gradually decreases. The injection quantity is gradually increased in accordance with the gradual decrease of the oxygen quantity. Thus, the fuel injection controller can perform processing for making an air fuel ratio rich in order to discharge nitrogen oxides from an occlusion agent while appropriately inhibiting torque fluctuation.
摘要翻译： 内燃机的燃料喷射控制器逐步降低目标进气量，并且当控制器将控制器切换到浓燃烧控制时逐步增加EGR阀的开度指令值。 因此，进气量逐渐降低，EGR量逐渐增加，因此流入燃烧室的氧气量（气缸流入氧气量）逐渐降低。 根据氧气量的逐渐减少，喷射量逐渐增加。 因此，燃料喷射控制器可以进行空气燃料比浓缩的处理，以便在适当地抑制转矩波动的同时从阻塞剂中排出氮氧化物。
-
公开(公告)号：US20080022976A1
公开(公告)日：2008-01-31
申请号：US11822936
申请日：2007-07-11
IPC分类号： F02D41/30
CPC分类号： F02D35/028 , F02D35/023 , F02D41/3035 , F02D41/403 , F02D41/405
摘要： The internal combustion engine control apparatus includes a calculation function of calculating an energy generation rate of an energy generated by combustion of fuel injected into a combustion chamber of a compression-ignition internal combustion engine, and an ignition detection function of detecting an ignition timing of the fuel in the combustion chamber on the basis of a timing at which the energy generation rate exceeds a first threshold value. When the energy generation rate due to a main injection, which is an object of ignition timing detection by the ignition detection function, exceeds the first threshold value at a plurality of timings, the ignition detection function determines an earliest one of the plurality of the timings as the ignition timing of the main injection.
摘要翻译： 内燃机控制装置包括：计算从喷射到压缩点火式内燃机的燃烧室的燃料的燃烧产生的能量的能量产生率的计算功能，以及检测点火正时的点火检测功能 基于能量产生率超过第一阈值的定时在燃烧室中的燃料。 当作为通过点火检测功能的点火正时检测的主要喷射的能量产生速率在多个定时超过第一阈值时，点火检测功能确定多个定时中的最早的一个 作为主喷射的点火正时。
-
公开(公告)号：US20070277591A1
公开(公告)日：2007-12-06
申请号：US11802988
申请日：2007-05-29
申请人： Shinya Hoshi , Hiroshi Haraguchi , Youhei Morimoto
发明人： Shinya Hoshi , Hiroshi Haraguchi , Youhei Morimoto
CPC分类号： F02D35/023 , F02D41/222 , F02D2041/281 , Y02T10/40
摘要： An abnormality determination device of a cylinder pressure sensor calculates a gain (sensing sensitivity coefficient) and an offset (bias) indicating an output characteristic of the cylinder pressure sensor. The device determines existence or nonexistence of an abnormality in the gain and the offset respectively. When the device determines that the abnormality exists, the device performs failsafe processing set in modes different from each other between the case of the abnormality in the gain and the case of the abnormality in the offset. As the failsafe processing in the case of the abnormality in the gain, the device performs processing for substantially prohibiting usage of a sensor value of the cylinder pressure sensor in control (fuel injection timing control) by using an alternative value (specified value) instead of the sensor value of the cylinder pressure sensor.
摘要翻译： 气缸压力传感器的异常判定装置计算表示气缸压力传感器的输出特性的增益（感测灵敏度系数）和偏移（偏置）。 该装置分别确定增益和偏移的异常的存在或不存在。 当设备确定异常存在时，设备在增益异常的情况与偏移量异常的情况之间执行以不同的模式设置故障保护处理。 作为在增益异常的情况下的故障保护处理，在进行控制（燃料喷射正时控制）时，通过使用替代值（规定值）来代替实施例，进行用于实质上禁止使用气缸压力传感器的传感器值的处理 气缸压力传感器的传感器值。
-
-
-
-
-
-
-
-
-
搜索结果
81 条记录 (耗时 0.025 秒)
