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    • 17. 发明专利
    • Controller of plant
    • 植物控制器
    • JP2004086292A
    • 2004-03-18
    • JP2002243239
    • 2002-08-23
    • Honda Motor Co Ltd本田技研工業株式会社
    • SATO MASAHIROISHIGURO TETSUYAHASHIMOTO HIDEFUMIAKASAKI NAOSUKE
    • F02D11/10F02D41/14G05B13/04G05B23/02
    • PROBLEM TO BE SOLVED: To provide a controller of a plant improving controllability when a control target value changes stepwise. SOLUTION: A DUTYEMF calculation part 30 calculates a duty correction amount DUTYEMF in accordance with variation DDTH of a throttle valve opening deviation being an output from an object of control. An adder 31 adds a final control amount MDUTYF being an input to the object of control and the duty correction amount DUTYEMF. Reversed correction of correction by a voltage correction part 28 is performed, and correction control input DUTVL is calculated. A model parameter identification unit 23 identifies a model parameter by using the throttle valve opening deviation amount DTH and correction control input DUTVL. COPYRIGHT: (C)2004,JPO
    • 要解决的问题:当控制目标值逐步改变时,提供设备的控制器改善可控性。 解决方案:DUTYEMF计算部30根据作为控制对象的输出的节气门开度偏差的变化DDTH计算占空比校正量DUTYEMF。 加法器31将作为输入的最终控制量MDUTYF与控制对象和占空比校正量DUTYEMF相加。 执行由电压校正部28进行的校正的反转校正,并且计算校正控制输入DUTVL。 模型参数识别单元23通过使用节气门开度偏差量DTH和校正控制输入DUTVL来识别模型参数。 版权所有(C)2004,JPO
    • 18. 发明专利
    • Exhaust gas purifying system of internal combustion engine
    • 内燃机排气净化系统
    • JP2013249779A
    • 2013-12-12
    • JP2012125448
    • 2012-05-31
    • Honda Motor Co Ltd本田技研工業株式会社
    • MATSUNAGA HIDEKIYASUI YUJISATO NAOHIROSAKOTA MASASHIHASHIMOTO HIDEFUMI
    • F01N3/08F01N3/24F01N3/28F02D41/04
    • F01N3/10F01N3/035F01N3/0814F01N3/0842F01N3/101F01N3/2066F01N13/009F02D41/0275F02D41/1465F02D2200/0806Y02A50/2345Y02T10/22
    • PROBLEM TO BE SOLVED: To provide an exhaust gas purifying system which can control an air-fuel ratio to stoichiometry with an appropriate timing so that NOx purification ratio in an SCR catalyst may not be deteriorated.SOLUTION: An exhaust gas purifying system includes: an SCR catalyst provided with a function that reduces NOx in the presence of NHand occludes NOin the exhaust; an upstream catalyst that is provided on the upstream side of the SCR catalyst and has three-way purification function; and an air-fuel ratio controller for controlling the air-fuel ratio of a gas mixture. The air-fuel ratio controller calculates an NOstorage amount corresponding to the amount of NOoccluded in the SCR catalyst (S2), calculates a value of the NOx correlation parameter that increases in response to the NOx discharge amount (S4), sets the stoichiometry determination threshold to a small value as the NOstorage amount increases (S5) and, when the value of the NOx correlation parameter is larger than the stoichiometry determination threshold, changes the operation mode of the engine to the stoichiometry operation mode in which the air-fuel ratio of the gas mixture is controlled to stoichiometry (S6, S9).
    • 要解决的问题:提供一种排气净化系统,其能够以适当的时机将空燃比控制为化学计量,使得SCR催化剂中的NOx净化率不会劣化。排气净化系统包括: SCR催化剂具有在NH存在下还原NOx的功能,并且在排气中封闭NO; 上游催化剂,其设置在SCR催化剂的上游侧并具有三通净化功能; 以及用于控制气体混合物的空燃比的空燃比控制器。 空燃比控制器计算与SCR催化剂(NO2)中排除的量对应的NO存储量,计算响应于NOx排放量而增加的NOx相关参数的值(S4),将化学计量判定阈值 到NOstorage量增加的小值(S5),并且当NOx相关参数的值大于化学计量确定阈值时,将发动机的运行模式改变为化学计量运行模式,其中空燃比 将气体混合物控制为化学计量(S6,S9)。
    • 19. 发明专利
    • Exhaust emission control system for internal combustion engine
    • 用于内燃机的排气排放控制系统
    • JP2012189007A
    • 2012-10-04
    • JP2011053409
    • 2011-03-10
    • Honda Motor Co Ltd本田技研工業株式会社
    • HAGA HISAOHASHIMOTO HIDEFUMIYASUI YUJI
    • F01N3/08B01D53/86B01D53/94F01N3/24
    • Y02T10/24
    • PROBLEM TO BE SOLVED: To provide an exhaust emission control system for an internal combustion engine capable of utilizing NOx purification function by a second selective reduction catalyst at a downstream side to the maximum while suppressing discharge of a reduction agent from a tail pipe.SOLUTION: This exhaust emission control system includes: a first selective reduction catalyst and a second selective reduction catalyst, provided in series in an exhaust pipe; a second consumption amount estimation part 51 estimating an NOx amount flowing into the second selective reduction catalyst and an NOx purification rate of the second selective reduction catalyst and estimating an NHamount consumed for purifying the flowing amount of NOx by the second selective reduction catalyst on the basis of the NOx purification rate and the NOx amount; a target NHconcentration determination part 52 determining a target value VNH3for an NHsensor so that NHin the amount equivalent to the estimated NHconsumption amount is re-adsorbed in the second selective reduction catalyst; and a controller 53 determining a corrected injection amount G_so that an output value VNH3 of the sensor becomes the determined target value VNH3.
    • 解决的问题:提供一种内燃机的废气排放控制系统,其能够在下游侧利用第二选择还原催化剂利用NOx净化功能,同时抑制还原剂从尾管排出 。 解决方案:该废气排放控制系统包括:排气管中串联设置的第一选择还原催化剂和第二选择还原催化剂; 第二消耗量估计部51估计流入第二选择还原催化剂的NOx量和第二选择还原催化剂的NOx净化率,并估计净化消耗的NH 3 基于NOx净化率和NOx量,第二选择还原催化剂的NOx的流动量; 目标NH 3 浓度确定部分52确定NH 3的目标值VNH3 CMD 传感器,使得等于估计的NH 3 消耗量的NH 3 被再次吸附在 第二选择还原催化剂; 以及控制器53确定校正喷射量G FB _ SB POS =“POST”> FB ,使得传感器的输出值VNH3成为确定的目标 值VNH3 CMD 。 版权所有(C)2013,JPO&INPIT
    • 20. 发明专利
    • Exhaust emission control system for internal combustion engine
    • 用于内燃机的排气排放控制系统
    • JP2012167549A
    • 2012-09-06
    • JP2011026568
    • 2011-02-09
    • Honda Motor Co Ltd本田技研工業株式会社
    • YASUI YUJIHASHIMOTO HIDEFUMIHAGA HISAOMATSUNAGA HIDEKISAKOTA MASASHI
    • F01N3/08F01N3/20F01N3/28F02D43/00F02D45/00
    • F02D41/0225F01N3/208F02D41/062F02D41/146F02D2250/36Y02T10/24
    • PROBLEM TO BE SOLVED: To provide an exhaust emission control system for an internal combustion engine capable of constantly maintaining a NOx purification rate in a selective reduction catalyst to near its maximum during just after beginning of the start of the internal combustion engine through running.SOLUTION: The exhaust emission control system includes an oxide catalyst and CSF provided in an exhaust pipe, and the selective reduction catalyst provided on a downstream side than the oxide catalyst and CSF in the exhaust pipe, for selectively reducing NOx in exhaust. In NO-NOx ratio optimization control for controlling a NO-NOx ratio of the exhaust flowing into the selective reduction catalyst toward an optimum value for maximizing a NOx purification rate in the selective reduction catalyst, an ECU prohibits performance of the NO-NOx ratio maximization control until predetermined time elapses from the beginning of the start of the engine or if the temperature of the exhaust system is below predetermined temperature, and permits performance of the NO-NOx ratio optimization control after the predetermined time has elapsed from the beginning of the start of the engine, or if the temperature of the exhaust system is the predetermined temperature or above.
    • 要解决的问题:提供一种用于内燃机的排气排放控制系统,其能够在内燃机启动之后刚刚开始之后,将选择还原催化剂中的NOx净化率恒定地维持在最大值附近 运行。 解决方案:废气排放控制系统包括设置在排气管中的氧化物催化剂和CSF,并且选择还原催化剂设置在排气管中的氧化物催化剂和CSF的下游侧,用于选择性地还原排气中的NOx。 在NO 2 -NOx比例优化控制中,用于控制NO 2 -NOx流入选择性还原催化剂的排气比 用于使选择还原催化剂中的NOx净化率最大化的最佳值,ECU禁止执行NO 2 -NOx比率最大化控制,直到从开始开始经过预定时间 或者如果排气系统的温度低于预定温度,并且允许在从开始起始的预定时间过去之后执行NO 2 -NOx比率优化控制 发动机的起动,或排气系统的温度是规定的温度以上。 版权所有(C)2012,JPO&INPIT