EXHAUST PURIFICATION SYSTEM OF INTERNAL COMBUSTION ENGINE
    91.
    发明申请
    EXHAUST PURIFICATION SYSTEM OF INTERNAL COMBUSTION ENGINE 有权
    内燃机排气净化系统

    公开(公告)号:US20110209462A1

    公开(公告)日:2011-09-01

    申请号:US12673888

    申请日:2009-06-15

    Abstract: In an exhaust purification system of an internal combustion engine, comprising a NOX catalyst device, which can satisfactorily store NOX in the exhaust gas when the concentration of oxygen in the exhaust gas is high and can release the stored NOX and purify the released NOX to N2 by reducing materials in the exhaust gas when the concentration of oxygen is decreased as a regeneration treatment, the regeneration treatment is carried out to change a combustion air-fuel ratio from a lean air-fuel ratio to a set rich air-fuel ratio, and N2O reducing material is supplied to the NOX catalyst device during at least one of a first period set within a period in which an air-fuel ratio in the exhaust gas within said NOX catalyst device changes from the lean air-fuel ratio to the set rich air-fuel ratio when the regeneration treatment is started and a second period set within a period after an air-fuel ratio in the exhaust gas within the NOX catalyst device becomes the stoichiometric air-fuel ratio when the regeneration treatment is finished.

    Abstract translation: 在内燃机的排气净化系统中,包括NO x催化剂装置,当废气中的氧浓度高时能够令人满意地将NO x储存在排气中,能够释放储存的NO x并将释放的NO x净化为N2 当通过再生处理使氧气浓度降低时,通过减少废气中的材料,进行再生处理,以将燃烧空燃比从稀空燃比变为浓空燃比,并且 在所述NO x催化剂装置内的排​​气中的空燃比从所述稀空燃比变为所述浓空燃比的期间内设定的第一期间中的至少一个中,向所述NO x催化剂装置供给N 2 O还原材料 当再生处理开始时的空燃比和在NO x催化剂装置内的排​​气中的空燃比后的期间内设定的第二期间成为理论空燃比 o当再生处理完成时。

    Method and Device for Determining an Oxygen Storage Capacity of a Catalytic Converter of an Internal Combustion Engine and Method and Device for Determining a Dynamic Time Duration for Exhaust Probes of an Internal Combustion Engine
    92.
    发明申请
    Method and Device for Determining an Oxygen Storage Capacity of a Catalytic Converter of an Internal Combustion Engine and Method and Device for Determining a Dynamic Time Duration for Exhaust Probes of an Internal Combustion Engine 有权
    用于确定内燃机的催化转化器的储氧能力的方法和装置以及用于确定内燃机排气探测器的动态时间持续时间的方法和装置

    公开(公告)号:US20110138876A1

    公开(公告)日:2011-06-16

    申请号:US13031334

    申请日:2011-02-21

    Abstract: An exhaust as catalytic converter is laden with oxygen until it is saturated at least upstream of an exhaust as probe. A predefined first rich air/fuel ration is set in a combustion chamber of a cylinder. A first oxygen storage capacity value is determined as a function of the measurement signal of an exhaust as probe and the predefined first rich air/fuel ratio. The exhaust as catalytic converter is laden with oxygen until it is saturated. A predefined second rich air/fuel ration is set in the combustion chamber of the cylinder. A second oxygen storage capacity value is determined as a function of the measurement signal of the exhaust as probe and the predefined second rich air/fuel ration. A corrected oxygen storage capacity value is determined as a function of the first and second oxygen storage capacity values.

    Abstract translation: 作为催化转化器的排气管充满氧气,直到其至少在排气的上游饱和为探针。 在气缸的燃烧室中设置预定义的第一浓空气/燃料比。 作为作为探针的排气的测量信号和预先确定的第一富空燃比确定第一储氧容量值。 作为催化转化器的排气装满氧气直至饱和。 预定义的第二浓空气/燃料比设置在气缸的燃烧室中。 作为作为探测器的排气的测量信号和预定义的第二浓空气/燃料比,确定第二储氧容量值。 作为第一和第二储氧容量值的函数确定校正的储氧容量值。

    APPARATUS, SYSTEM, AND METHOD FOR REDUCING NOx EMISSIONS ON AN SCR CATALYST
    93.
    发明申请
    APPARATUS, SYSTEM, AND METHOD FOR REDUCING NOx EMISSIONS ON AN SCR CATALYST 有权
    用于减少SCR催化剂上NOx排放的装置,系统和方法

    公开(公告)号:US20090272105A1

    公开(公告)日:2009-11-05

    申请号:US12112795

    申请日:2008-04-30

    Abstract: Various embodiments of an apparatus, system, and method are disclosed for reducing NOx emissions on an SCR catalyst. For example, according to one representative embodiment, an apparatus for reducing NOx emissions in an engine exhaust includes a NOx reduction target module that is configured to determine a NOx reduction requirement that includes an amount of NOx in the exhaust gas stream to be reduced on a selective catalytic reduction (SCR) catalyst. The apparatus also includes an ammonia target module that is configured to determine an ammonia addition requirement that includes an amount of ammonia added to the exhaust gas stream to achieve the NOx reduction requirement. The apparatus also includes a reductant target module that is configured to determine a reductant injection requirement that includes an amount of reductant added to the exhaust gas stream to achieve the ammonia addition requirement. The apparatus further includes a reductant limiting module that is configured to determine whether at least one reductant limiting condition is met and to limit the amount of reductant added in response to the at least one reductant limiting condition if the at least one reductant limiting condition has been met.

    Abstract translation: 公开了用于减少SCR催化剂上的NOx排放的设备,系统和方法的各种实施例。 例如,根据一个代表性的实施例,用于减少发动机排气中的NOx排放的装置包括NOx还原目标模块,其被配置为确定NOx还原要求,所述NOx还原要求包括在所述排气流中减少的NOx的量 选择性催化还原(SCR)催化剂。 该装置还包括氨目标模块,其被配置为确定包括添加到废气流中的氨的量以实现NOx降低要求的氨添加要求。 该装置还包括还原剂目标模块,其被配置为确定还原剂注入要求,其包括添加到废气流中的还原剂的量以实现氨添加要求。 该装置还包括还原剂限制模块,其被配置为确定是否满足至少一种还原剂限制条件,并且如果至少一种还原剂限制条件已经被限制,则限制响应于至少一种还原剂限制条件而添加的还原剂的量 见面

    Method and Device for Determining an Oxygen Storage Capacity of a Catalytic Converter of an Internal Combustion Engine and Method and Device for Determining a Dynamic Time Duration for Exhaust Probes of an Internal Combustion Engine
    94.
    发明申请
    Method and Device for Determining an Oxygen Storage Capacity of a Catalytic Converter of an Internal Combustion Engine and Method and Device for Determining a Dynamic Time Duration for Exhaust Probes of an Internal Combustion Engine 有权
    用于确定内燃机的催化转化器的储氧能力的方法和装置以及用于确定内燃机排气探测器的动态时间持续时间的方法和装置

    公开(公告)号:US20090126344A1

    公开(公告)日:2009-05-21

    申请号:US11921380

    申请日:2006-05-10

    Abstract: An exhaust gas catalytic converter is laden with oxygen until it is saturated at least upstream of an exhaust gas probe. A predefined first rich air/fuel ration is set in a combustion chamber of a cylinder. A first oxygen storage capacity value is determined as a function of the measurement signal of an exhaust gas probe and the predefined first rich air/fuel ratio. The exhaust gas catalytic converter is laden with oxygen until it is saturated. A predefined second rich air/fuel ration is set in the combustion chamber of the cylinder. A second oxygen storage capacity value is determined as a function of the measurement signal of the exhaust gas probe and the predefined second rich air/fuel ration. A corrected oxygen storage capacity value is determined as a function of the first and second oxygen storage capacity values.

    Abstract translation: 废气催化转化器充满氧气,直到其至少在排气探针的上游饱和。 在气缸的燃烧室中设置预定义的第一浓空气/燃料比。 根据排气探头的测量信号和预先确定的第一浓空气/燃料比确定第一储氧容量值。 废气催化转化器充满氧气直至饱和。 预定义的第二浓空气/燃料比设置在气缸的燃烧室中。 根据排气探针的测量信号和预定义的第二浓空气/燃料比来确定第二储氧容量值。 作为第一和第二储氧容量值的函数确定校正的储氧容量值。

    Controller of an internal combustion engine
    95.
    发明申请
    Controller of an internal combustion engine 有权
    内燃机控制器

    公开(公告)号:US20070062489A1

    公开(公告)日:2007-03-22

    申请号:US11502478

    申请日:2006-08-11

    Abstract: When the first fuel injection is performed after reversion from the fuel cut, the fuel pulse width Ka·INJ.PW is set so that a fuel supply amount is greatly increased in relation to an intake air amount, and the ignition timing is set to the first retarded ignition timing θa. When the second and subsequent fuel injections are performed, the fuel pulse width Kb·INJ.PW that is smaller in increase width of fuel is set, and the ignition timing is set to the second retarded ignition timing θb that has a retardation amount smaller than that of the first retarded ignition timing θa.

    Abstract translation: 当从燃料切断返回后执行第一燃料喷射时,燃料脉冲宽度Ka.INJ.PW被设定为使得燃料供给量相对于进气量大大增加,点火正时设定为 第一次延迟点火正时θa。 当执行第二次和随后的燃料喷射时,设定燃料的增加宽度较小的燃料脉冲宽度Kb.INJ.PW,并且将点火正时设定为具有小于等于的燃料的延迟量的第二延迟点火正时 第一个延迟点火正时θa。

    Method for the control of the supplied air/fuel ratio of an internal combustion engine
    96.
    发明申请
    Method for the control of the supplied air/fuel ratio of an internal combustion engine 有权
    用于控制内燃机的供给空气/燃料比的方法

    公开(公告)号:US20060032215A1

    公开(公告)日:2006-02-16

    申请号:US11197308

    申请日:2005-08-05

    Abstract: In a method for the control of the supplied air/fuel ratio of an internal combustion engine (1) with a catalytic converter (5) which is located in the exhaust gas line (2) with an integrated oxygen reservoir (6), it is suggested that the air/fuel ratio be controlled as a function of at least one parameter of the internal combustion engine (1), at least one parameter of the catalytic converter (5), and/or as a function of the type and amount of the exhaust gas emissions currently occurring, in order to optimize the speed for adjustment of the admission or discharge of oxygen in the oxygen reservoir (6) contained in the catalytic converter (5) for favorable conversion of the exhaust gas emissions during transient operation of the internal combustion engine (1) and after deviations from the air/fuel ratio λ=1. As claimed in the invention, a “disturbance” of the exhaust gas composition which occurs during transient operation of the internal combustion engine (1) is corrected with a speed which takes into account both the current conversion demand by the catalytic converter (5) and also the current conversion performance of the catalytic converter (5) and thus makes possible improved overall exhaust gas conversion.

    Abstract translation: 在利用具有集成氧气储存器(6)的位于排气管线(2)中的催化转化器(5)来控制内燃机(1)的供应空燃比的方法中, 建议将空燃比控制为内燃机(1)的至少一个参数,催化转化器(5)的至少一个参数和/或作为其中的类型和量的函数的函数 为了优化用于调节催化转化器(5)中所含的氧气储存器(6)中的氧的进入或排出的速度,以便在瞬态操作期间有利地转换废气排放,从而优化当前发生的废气排放 内燃机(1)和偏离空燃比λ= 1之后。 如本发明所要求的,在内燃机(1)的过渡操作期间发生的排气组成的“扰动”以考虑到催化转化器(5)和 也是催化转化器(5)的电流转换性能,因此可以改进整体排气转化。

    内燃機関の排気浄化装置
    99.
    发明申请
    内燃機関の排気浄化装置 审中-公开
    用于内燃机的排气排放控制装置

    公开(公告)号:WO2010146718A1

    公开(公告)日:2010-12-23

    申请号:PCT/JP2009/061252

    申请日:2009-06-15

    Abstract:  排気ガス中の酸素濃度が高い時には排気ガス中のNO X を良好に保持し、再生処理として、排気ガス中 の酸素濃度を低下させれば、保持したNO X を離脱し、こうして離脱させたNO X を排気ガス中の還元物 質によりN 2 へ還元浄化することができるNO X 触媒装置を具備する内燃機関の排気浄化装置において、 再生処理は燃焼空燃比をリーン空燃比ALから設定リッチ空燃比ARへ変化させることにより実施され 、再生処理を開始するためにNO X 触媒装置内の排気ガスの空燃比がリーン空燃比から設定リッチ空燃比 となるまでの間における第一設定期間(t2-t3)、及び、再生処理を終了するためにNO X 触媒装置 内の排気ガスの空燃比が理論空燃比ASとなった以降における第二設定期間(t6-t7)の少なくと も一方において、NO X 触媒装置へN 2 O還元剤を供給する。

    Abstract translation: 一种用于内燃机的排气排放控制装置,当排气中的氧浓度高时,配备有在废气中保持NOX的NO x催化剂装置的废气排放控制装置,当将氧气浓度 在排气中滴下,通过还原废气中的物质来还原和净化由此分离成N 2的NO x,其中再生处理通过将燃烧空气/燃料比从稀空气/燃料比(AL)改变为 在NOX催化剂装置中的废气的空气/燃料比变化的第一设定时间(t2-t3)期间,向NOX催化剂装置供给设定的富空燃比(AR)和N 2 O还原剂 在NOX催化剂装置中的排气的空气/燃料比变成为第二设定时段(t6-t7)后,为了开始再生处理,或者在第二设定期间(t6-t7),将空气/燃料比设定为浓空燃比 一个理论空气/燃料 o(AS),以完成再生处理。

    APPARATUS, SYSTEM, AND METHOD FOR NOX SIGNAL CORRECTION IN FEEDBACK CONTROLS OF AN SCR SYSTEM
    100.
    发明申请
    APPARATUS, SYSTEM, AND METHOD FOR NOX SIGNAL CORRECTION IN FEEDBACK CONTROLS OF AN SCR SYSTEM 审中-公开
    SCR系统反馈控制中NOX信号校正的装置,系统和方法

    公开(公告)号:WO2009135062A3

    公开(公告)日:2010-01-28

    申请号:PCT/US2009042409

    申请日:2009-04-30

    Abstract: For example, according to one representative embodiment, an apparatus (130) for reducing NOx emissions in an engine exhaust includes a NOx reduction target module (300) configured to determine a NOx reduction requirement (304). The apparatus also includes a tailpipe NOx module (397) configured to determine a sensed amount of NOx exiting the engine system (10) and a signal correction algorithm module (351) configured to determine a corrected amount of NOx (399) exiting the engine system based at least partially on the sensed amount of NOx exiting the engine system. The apparatus also includes a feedback ammonia target module (344) configured to determine a feedback ammonia addition requirement (348). The feedback ammonia addition requirement includes an amount of ammonia added to the exhaust gas stream to achieve the NOx reduction requirement in response to the corrected amount of NOx exiting the engine system. The apparatus also includes a reductant target module (330) that is configured to determine a reductant injection requirement (332).

    Abstract translation: 例如,根据一个代表性的实施例,用于减少发动机排气中的NOx排放的装置(130)包括被配置为确定NOx减少要求(304)的NOx还原目标模块(300)。 该设备还包括尾管NOx模块(397),其构造成确定感测到的排出发动机系统(10)的NOx量;以及信号校正算法模块(351),其被配置为确定离开发动机系统的校正量的NOx(399) 至少部分地基于离开发动机系统的感测量的NOx。 该装置还包括被配置为确定反馈氨添加要求(348)的反馈氨目标模块(344)。 反馈氨添加要求包括添加到废气流中的氨量以响应于排出发动机系统的经校正的NOx量来实现NOx还原要求。 该装置还包括被配置为确定还原剂注入要求(332)的还原剂目标模块(330)。

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