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    • 2. 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 and control method for lean-burn engine
    • 稀燃发动机的控制装置和控制方法
    • US5813386A
    • 1998-09-29
    • US825335
    • 1997-03-28
    • Kojiro OkadaKazuhide TogaiMasaji Ishida
    • Kojiro OkadaKazuhide TogaiMasaji Ishida
    • F02D37/02F02D41/14F02D41/30F02D43/04
    • 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.
    • 稀燃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。
    • 5. 发明授权
    • Fuel feeding system and method for internal combustion engine
    • 内燃机燃油供给系统及方法
    • US5517970A
    • 1996-05-21
    • US490744
    • 1995-06-15
    • Kojiro OkadaShogo Omori
    • Kojiro OkadaShogo Omori
    • F02D41/14F02D41/04
    • F02D41/1475F02D41/1406F02D41/1498F02D2200/1015
    • A fuel feeding system according to this invention has a fuel injector capable of controlling the quantity of fuel to be fed to an internal combustion engine, a first detector for detecting a fluctuated state of combustion in the engine, a fuel feed controller for determining a quantity of fuel, which is to be fed from the fuel injector to maintain an air/fuel ratio of the engine at a value in the neighborhood of a lean combustion limit, on the basis of detection data from the first detector and controlling the fuel injector on the basis of the value of the thus-determined quantity of fuel, a second detector for detecting a state of operation of the engine, a control data updating unit for repeatedly updating the predetermined control data on the basis of the detection data when the engine has been detected to be in a first operation state by the second detector, and a control data holder for holding the control data at a value, to which the control data was updated in the immediately preceding first operation state, when the engine has been detected to be out of the first operation state by the second detector.
    • 根据本发明的燃料供给系统具有能够控制供给内燃机的燃料量的燃料喷射器,用于检测发动机的燃烧波动状态的第一检测器,用于确定数量的燃料供给控制器 的燃料,其将从燃料喷射器供给以基于来自第一检测器的检测数据将发动机的空气/燃料比维持在稀燃燃烧极限附近的值,并且控制燃料喷射器 这样确定的燃料量的值的基础,用于检测发动机的操作状态的第二检测器,用于当发动机具有的检测数据时基于检测数据反复更新预定控制数据的控制数据更新单元 通过第二检测器检测到处于第一操作状态,以及控制数据保持器,用于将控制数据保持在控制数据被更新为立即P的值 当第二检测器检测到发动机处于第一操作状态时,退出第一操作状态。