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    • 2. 发明授权
    • Apparatus and method for internal-combustion engine control
    • 内燃机控制装置及方法
    • US5595060A
    • 1997-01-21
    • US438553
    • 1995-05-10
    • Kazuhide TogaiKazuo Koga
    • Kazuhide TogaiKazuo Koga
    • F01N3/08F02D21/08F02D41/00F02D41/02F02D41/10F02M25/07F02P5/15F01N3/20
    • F02P5/1516F01N3/0842F02D41/005F02D41/0275F02D41/10F02D41/1462F02D41/1465F01N2250/12F02D2200/0806F02D2250/36F02M26/15Y02T10/46Y02T10/47
    • In a control apparatus and control method for an internal combustion engine having an exhaust purifying catalytic device for adsorbing nitrogen oxide contained in exhaust gases from the engine, the adsorption state of nitrogen oxide adsorbed by the catalytic device is estimated by an electronic control unit during the lean-combustion driving of the engine. If the catalytic device is saturated with nitrogen oxide, the ignition timing is delayed and the exhaust gas is recirculated to the intake side of the engine with the lean air-fuel ratio kept unchanged. This starts the nitrogen oxide reduced driving mode for deteriorating the combustion state in the engine. At this time, the engine output will not change by a great amount. Further, a reducing atmosphere is created around the catalytic device by unburnt gases, generated due to the deterioration of the combustion state, to deoxidize the adsorbed nitrogen oxide. As a result, the purifying ability of the catalytic device can be recovered to suppress the discharge amount of nitrogen oxide without deteriorating the smoothness of engine driving and fuel economy.
    • 在具有用于吸附来自发动机的废气中含有的氮氧化物的排气净化催化装置的内燃机的控制装置和控制方法中,催化装置吸附的氮氧化物的吸附状态由电子控制装置在 发动机的稀燃驱动。 如果催化装置被氮氧化物饱和,则随着空燃比保持不变,点火正时延迟并且排气再循环到发动机的进气侧。 这就开始了用于使发动机的燃烧状态恶化的氮氧化物还原驱动模式。 此时,发动机输出不会发生大的变化。 此外,由于燃烧状态的劣化而产生的未燃烧气体在催化装置周围产生还原气氛,以使吸附的氮氧化物脱氧。 结果,可以回收催化装置的净化能力,以抑制氮氧化物的排放量,而不会降低发动机驱动的平滑性和燃料经济性。
    • 3. 发明授权
    • Control device and control method for lean-burn engine
    • 稀燃发动机的控制装置和控制方法
    • US5778856A
    • 1998-07-14
    • US501050
    • 1995-09-28
    • Kojiro OkadaKazuhide TogaiMasaji Ishida
    • Kojiro OkadaKazuhide TogaiMasaji Ishida
    • F02D37/02F02D41/14F02D41/30F02D41/04F02D43/04
    • F02D41/1475F02D37/02F02D41/3011F02D41/1456F02D41/307
    • A control device of a lean-burn engine has an electronic control unit. Upon start of switching from stoichiometric driving to lean driving, the control unit (10) derives, from a map, a target pressure (P0) and a basic opening degree (D0) of an idling speed control valve, serving as an air bypass valve, based on the throttle opening degree (TPS) and the engine rotation speed (Ne) at the start of the switching. The control unit supplies driving pulses (N) of a number corresponding to the basic opening degree (D0) to a stepper motor (32) of the idling speed control valve. Then, the control unit supplies the stepper motor with driving pulses of a number corresponding to an opening degree correction amount (D1) which in turn corresponds to a deviation between the target intake pressure (P0) and an actual intake pressure (PB), to thereby suppress a change in the torque at the time of switching between the rich driving, including the stoichiometric driving, and the lean driving of the lean-burn engine.
    • PCT No.PCT / JP94 / 02270 Sec。 371 1995年9月28日第 102(e)1995年9月28日PCT PCT 1994年12月27日PCT公布。 WO95 / 18298 PCT出版物 日期:1995年7月6日,稀燃型发动机的控制装置具有电子控制单元。 从开始从化学计量驱动切换到稀薄驱动时,控制单元(10)从地图导出作为空气旁通阀的空转速度控制阀的目标压力(P0)和基本开度(D0) ,基于在切换开始时的节气门开度(TPS)和发动机转速(Ne)。 控制单元将与基本开度(D0)相对应的数字的驱动脉冲(N)提供给怠速控制阀的步进电动机(32)。 然后,控制单元向步进电动机提供对应于与目标进气压力(P0)和实际进气压力(PB)之间的偏差相对应的开度修正量(D1)的数量的驱动脉冲, 从而抑制在包括理论空燃比的丰富驾驶与稀薄燃烧发动机的稀薄驱动之间切换时的转矩变化。
    • 4. 发明授权
    • Control device for internal combustion engine
    • 内燃机控制装置
    • US5329914A
    • 1994-07-19
    • US949880
    • 1992-12-31
    • Kazuhide TogaiTetsurou Ishida
    • Kazuhide TogaiTetsurou Ishida
    • F02D41/14F02D41/22
    • F02D41/1493F02D41/1481F02D41/1495
    • A control device for an internal combustion engine detects the air fuel ratio of the internal combustion engine at a condition with high accuracy and responsibility. Accordingly, improvement of the fuel consumption of the engine, improvement of the power of the engine, and improvement of the exhaust gas are achieved. The control device for an internal combustion engine calculates, in turn, a first air fuel ratio based on the fuel injection suction, a second air fuel ratio at the time when the gas is reached to the large area air fuel ratio sensor, and a third air fuel ratio at the time when the large area air fuel ratio sensor detects the air fuel ratio, according to the fuel amount calculated with respect to the difference between the sensed air fuel ratio and the objective air fuel ratio, to judge a jam of the large area air fuel ratio sensor by comparing the third air fuel ratio with the sensed air fuel ratio. Thus, the jam judgment is carried out in consideration with the fuel transportation lag, the transportation lag of the gas, and the response delay inherent to the large area air fuel ratio sensor. Accordingly, a highly accurate control for the air fuel ratio can be achieved.
    • PCT No.PCT / JP92 / 00389。 371日期:1992年12月31日 102(e)日期1992年12月31日PCT提交1992年3月30日PCT公布。 出版物WO92 / 17696 1 9 9 2年10月15日。内燃机的控制装置以高精度和高负荷的状态检测内燃机的空燃比。 因此,实现了发动机的燃料消耗的改善,发动机的功率的提高和废气的改善。 用于内燃机的控制装置又计算出基于燃料喷射吸力的第一空气燃料比,当达到大面积空燃比传感器时的第二空气燃料比,以及第三空气燃料 根据相对于感测到的空气燃料比与目标空燃比的差计算出的燃料量,大面积空燃比传感器检测到空燃比时的空燃比,判断为 通过将第三空气燃料比与感测的空燃比进行比较来获得大面积空燃比传感器。 因此,考虑到燃料运输滞后,气体的运输滞后以及大面积空燃比传感器固有的响应延迟来进行堵塞判定。 因此,可以实现对空燃比的高精度控制。
    • 6. 发明授权
    • Throttle valve control apparatus
    • 节流阀控制装置
    • US5027769A
    • 1991-07-02
    • US567596
    • 1990-08-15
    • Masato YoshidaYoshiaki DannoKazuhide Togai
    • Masato YoshidaYoshiaki DannoKazuhide Togai
    • F02B1/04F02B27/02F02B75/18F02B75/20F02D9/02F02D11/10
    • F02B27/0252F02B27/0221F02B27/0289F02D11/107F02D9/02F02B1/04F02B2075/1812F02B2075/1816F02B27/0273F02B75/20F02D2009/0277F02D2009/0281Y02T10/146Y02T10/42
    • Throttle valves are individually disposed in a plurality of intake passages of an engine. In normal operation condition of the throttle valves, a first control device controls the throttle valves according to the detection result of an operation condition detecting device to control the amounts of intake air of the individual intake passages, thereby obtaining good engine performance from low-speed to high-speed ranges. When an abnormality detecting device detects an abnormality in a throttle valve, a determination device determines a normal throttle valve, and a second control device controls only the normal throttle valve in preference to the first control device to control the intake air amount, thereby ensuring continued operation even if a malfunction occurs in one of the throttle valves. Also, intake passages of the engine are divided into two systems and are individually connected with surge tanks, a communication passage communicating with the surge tanks and a communication control valve ae provided, throttle valves and intake control valves are disposed in the individual passages, and the throttle valves, the communication control valve and the intake control valves are open/closed controlled by the operation condition detecting device and control device, thereby obtaining good engine performance and ensuring continued operation of the engine even if a malfunction occurs in the throttle valve control system, to maintain the stability of the vehicle.
    • 节气门单独设置在发动机的多个进气通道中。 在节流阀的正常运行状态下,第一控制装置根据操作状态检测装置的检测结果来控制节流阀,以控制各个进气通道的进气量,从而从低速度获得良好的发动机性能 到高速档。 当异常检测装置检测到节气门的异常时,确定装置确定正常的节流阀,并且第二控制装置优先于第一控制装置仅控制正常节流阀以控制进气量,从而确保持续 即使在其中一个节流阀中发生故障,也是如此。 此外,发动机的进气通道被分成两个系统,并且分别连接有缓冲罐,与缓冲罐连通的连通通道和设置的通信控制阀ae,节气门和进气控制阀设置在各个通道中,并且 节流阀,通气控制阀和进气控制阀由操作状态检测装置和控制装置打开/关闭,从而获得良好的发动机性能并确保发动机的继续运转,即使在节气门控制中发生故障 系统,保持车辆的稳定性。
    • 7. 发明授权
    • Control apparatus for an internal combustion engine
    • 一种用于内燃机的控制装置
    • US5896839A
    • 1999-04-27
    • US917869
    • 1997-08-27
    • Kazuhide Togai
    • Kazuhide Togai
    • F02P5/15F02D41/02F02D41/22F02M25/07
    • F02D41/222F02B2275/18Y02T10/42
    • A control apparatus of an internal combustion engine includes an electronic control unit which determines whether a throttle valve opening sensor is normal or faulty in accordance with an output from the sensor. If the throttle valve opening sensor operates normally, a target air-fuel ratio is set in accordance with the output of the sensor. On the other hand, if the throttle valve opening sensor is in trouble, the control unit sets the target air-fuel ratio to a ratio equal to or close to the stoichiometric air-fuel ratio in accordance with the output of an intake air amount sensor, whereby a stable operation of the internal combustion engine is ensured.
    • 内燃机的控制装置包括电子控制单元,该电子控制单元根据传感器的输出来判定节气门开度传感器是正常还是有故障。 如果节流阀开度传感器正常运行,则根据传感器的输出来设定目标空燃比。 另一方面,如果节气门开度传感器处于故障状态,则控制单元根据进气量传感器的输出将目标空燃比设定为等于或接近化学计量空燃比的比率 从而确保内燃机的稳定运行。
    • 8. 发明授权
    • Engine control system and method
    • 发动机控制系统及方法
    • US5337719A
    • 1994-08-16
    • US022491
    • 1993-02-25
    • Kazuhide Togai
    • Kazuhide Togai
    • F02D17/02F01L1/26F02D13/06F02D41/00F02D41/04F02D41/18F02D41/32F02D41/34F02D45/00F02P5/04F02M51/00
    • F02P5/045F01L1/267F02D13/06F02D41/04F02D41/182F02D41/32F02D2200/0406F02D2200/0414F02D41/008Y02T10/18
    • An engine control system to calculate the intake air quantity comprises engine revolution speed detecting means for producing an output signal of engine revolution data, intake air temperature detecting means for producing an output signal of intake air temperature data of the intake manifold, cylinder operation condition determining means for producing an output signal of the cylinder operating condition data for each engine cylinder, intake air pressure detecting means for producing an output signal of air pressure data of the intake manifold, intake air ratio compensation value calculating means for calculating, on the basis of the cylinder operation data of each cylinder an intake air ratio compensation value derived from the air pressure data of air in the intake manifold and the engine revolution speed data of the engine, and intake air quantity calculating means for calculating an intake air quantity on the basis of the intake air ratio compensation value. An engine control method to calculate the intake air quantity comprises the steps of detecting engine revolution data and intake air temperature data of the intake manifold, determining cylinder operation data of the engine, detecting intake air pressure of air in the intake manifold, calculating on the basis of the cylinder operation data an intake air ratio compensation value derived from the air pressure data of the manifold and the engine revolution speed data, and calculating an intake air quantity of air to be introduced into each engine cylinder on the basis of the intake air ratio compensation value.
    • 用于计算进气量的发动机控制系统包括用于产生发动机转速数据的输出信号的发动机转速检测装置,用于产生进气歧管的进气温度数据的输出信号的进气温度检测装置,气缸操作条件确定 用于产生每个发动机气缸的气缸操作状态数据的输出信号的装置,用于产生进气歧管的气压数据的输出信号的进气压力检测装置,进气量补偿值计算装置,用于基于 每个气缸的气缸操作数据根据进气歧管中的空气的气压数据和发动机的发动机转速数据得出的进气量补偿值,以及基于该进气量计算装置计算进气量的进气量计算装置 的进气比补偿值。 用于计算进气量的发动机控制方法包括以下步骤:检测进气歧管的发动机转速数据和进气温度数据,确定发动机的气缸操作数据,检测进气歧管中的空气的进气压力, 气缸操作数据的基础是从歧管的气压数据和发动机转速数据得出的进气量补偿值,并且基于进气量计算要引入每个发动机气缸的空气的进气量 比值补偿值。