EXHAUST GAS CONTROL APPARATUS OF INTERNAL COMBUSTION ENGINE
    82.
    发明公开
    EXHAUST GAS CONTROL APPARATUS OF INTERNAL COMBUSTION ENGINE 有权
    ABGASSTEUERUNGSVORRICHTUNG EINES VERBRENNUNGSMOTORS

    公开(公告)号:EP3149314A1

    公开(公告)日:2017-04-05

    申请号:EP15730244.9

    申请日:2015-05-20

    IPC分类号: F02D41/02 F01N9/00

    摘要: An estimated trapped amount (PM) that is an estimated value of an amount of particulate matter that is trapped in a particulate filter arranged in an engine exhaust passage is calculated based on an engine operating state, and PM removal control is performed when the estimated trapped amount exceeds an upper limit amount. Reference temperature increase control is performed to remove the particulate matter from the particulate filter, and an actual temperature that is the temperature of the particulate filter while the reference temperature increase control is being performed is detected. A reference temperature that is the temperature of the particulate filter when it is assumed that the reference temperature increase control has been performed when the amount of particulate matter trapped in the particulate filter is a reference initial trapped amount is stored in advance. The estimated trapped amount is corrected based on the actual temperature and the reference temperature.

    摘要翻译: 基于发动机运转状态来计算作为排放在发动机排气通路中的微粒过滤器中的颗粒物质的量的估计值的估计的捕获量(PM),并且,在估计被捕获的情况下进行PM去除控制 量超过上限量。 进行基准温度升高控制以从颗粒过滤器中除去颗粒物质,并且检测在执行基准温度升高控制时微粒过滤器的温度的实际温度。 当基准温度是微粒过滤器中被捕获在颗粒过滤器中的颗粒物质的量作为基准初始捕集量时,当假设已经执行了基准温度升高控制时,微粒过滤器的温度被预先存储。 基于实际温度和基准温度校正估计的捕获量。

    METHOD AND SYSTEM FOR MONITORING OF A PHYSICAL QUANTITY RELATED TO A PARTICULATE MASS IN AT LEAST ONE EXHAUST PIPE
    83.
    发明公开
    METHOD AND SYSTEM FOR MONITORING OF A PHYSICAL QUANTITY RELATED TO A PARTICULATE MASS IN AT LEAST ONE EXHAUST PIPE 审中-公开
    方法和系统监测物理尺寸与任何颗粒物质量在至少一个排气管连接

    公开(公告)号:EP3140524A1

    公开(公告)日:2017-03-15

    申请号:EP15788571.6

    申请日:2015-05-06

    申请人: Scania CV AB

    IPC分类号: F01N11/00 F01N3/021 F01N9/00

    摘要: Methods and systems are provided to monitor a quantity relating to particulate mass M in at least one exhaust pipe arranged downstream of a combustion engine. A first determination device determines a reduction Δ of a pressure difference dP over at least one or several particulate filters, arranged downstream of the combustion engine. This reduction Δ is related to a pressure difference dPref over one or more corresponding reference particulate filters. A second determination device determines a quantity related to the particulate mass M, based on the determined reduction Δ of the pressure difference dP and a predetermined correlation between the reduction Δ and the quantity related to the particulate mass M, so that use of soot sensors in the exhaust pipe may be avoided. A comparison device compares the quantity with a defined threshold value Mth and a providing device provides indications related to the comparison.

    摘要翻译: 提供的方法和系统来监测量与微粒质量M布置在下游的燃烧发动机中的至少一个排气管上。 第一判定装置bestimmt在至少一个或多个微粒过滤器的压力差的dP的减少Δ,下游布置在内燃机的。 这种减少Δ涉及在一个或多个参考文献通讯微粒过滤器的压力差dP制冷剂。 第二判断装置bestimmt相关的微粒物质M的量,基于该压力差Dp和减少Δ和相关的颗粒质量M的量之间的预定相关性的确定性开采减少Δ,象使用烟灰传感器在 排气管可以被避免。 比较装置比较的数量与定义的阈值第M和提供装置提供与所述比较的指示。

    ABNORMALITY DETERMINATION SYSTEM FOR AN EXHAUST DEVICE
    86.
    发明公开
    ABNORMALITY DETERMINATION SYSTEM FOR AN EXHAUST DEVICE 审中-公开
    排气装置的异常判定系统

    公开(公告)号:EP3061937A1

    公开(公告)日:2016-08-31

    申请号:EP16157035.3

    申请日:2016-02-24

    IPC分类号: F01N11/00 F01N9/00

    摘要: An abnormality in an exhaust system component disposed at the downstream side of a particulate filter (4) is determined by using a differential pressure sensor (5) for measuring a differential pressure between a pressure of exhaust gas at the upstream side of the particulate filter (4) and an atmospheric pressure. In an abnormality determination system for an exhaust device according to the present disclosure, a differential pressure at a second flow rate of the exhaust gas different from a first flow rate of the exhaust gas is estimated based on a first actual differential pressure which is a differential pressure measured by the differential pressure sensor (5) and the first flow rate of the exhaust gas which is a flow rate of the exhaust gas at the time when the first actual differential pressure is measured, and when a difference between a second actual differential pressure, which is measured by the differential pressure sensor (5) at the time when the actual flow rate of the exhaust gas is the second flow rate of the exhaust gas, and an estimated differential pressure is equal to or greater than a predetermined threshold value, a determination is made that the exhaust system component at the downstream side of the particulate filter (4) is abnormal.

    摘要翻译: 通过使用差压传感器(5)来确定设置在微粒过滤器(4)下游侧的排气系统部件中的异常,所述差压传感器(5)用于测量微粒过滤器(4)上游侧的排气压力 4)和大气压力。 在根据本公开的用于排气装置的异常判定系统中,基于第一实际差压来估计与排气的第一流量不同的排气的第二流量的压差, 由差压传感器(5)测量的压力和作为测量第一实际差压时的排气流量的排气的第一流量,以及当第二实际压差 当排气的实际流量是排气的第二流量时,由差压传感器(5)测量的推定压差为预定的阈值以上, 确定颗粒过滤器(4)下游侧的排气系统部件异常。

    REDUCING AGENT SUPPLYING DEVICE
    87.
    发明公开
    REDUCING AGENT SUPPLYING DEVICE 有权
    减少剂供应装置

    公开(公告)号:EP2998532A3

    公开(公告)日:2016-03-30

    申请号:EP15184973.4

    申请日:2015-09-14

    申请人: DENSO CORPORATION

    摘要: A reducing agent supplying device includes reaction container (20), ozone generator (30), air pump (30p), ozone-containing air pipe (26), compressed air pipe (25), switching device (25v, 26v), and switching controller (41 a). The reaction container defines a reaction chamber (20a) in which reducing agent is reformed. The ozone generator generates ozone from oxygen in air, being supplied by the air pump. Ozone-containing air flows through the ozone-containing air pipe toward the reaction chamber. A portion of compressed air flows through the compressed air pipe toward the reaction chamber. The switching device switches between an air pump mode, in which the ozone-containing air is supplied into the reaction chamber, and a supercharging mode, in which the compressed air is supplied into the reaction chamber. The switching controller controls the switching device based on a temperature of the reducing catalyst and an exhaust pressure in the exhaust passage.

    摘要翻译: (20),臭氧发生器(30),空气泵(30p),含臭氧空气管(26),压缩空气管(25),开关装置(25v,26v)以及开关装置 控制器(41a)。 反应容器限定其中还原剂被重整的反应室(20a)。 臭氧发生器由空气中的氧气产生臭氧,由空气泵供应。 含臭氧的空气通过含臭氧的空气管流向反应室。 一部分压缩空气通过压缩空气管流向反应室。 切换装置在向反应室内供给含有臭氧的空气的空气泵模式和向反应室内供给压缩空气的增压模式之间进行切换。 切换控制器基于还原催化剂的温度和排气通道中的排气压力来控制开关装置。

    METHOD PERTAINING TO AN SCR SYSTEM AND AN SCR SYSTEM.

    公开(公告)号:EP2870331A4

    公开(公告)日:2016-03-30

    申请号:EP13819990

    申请日:2013-07-04

    申请人: SCANIA CV AB

    发明人: SARBY HÅKAN

    IPC分类号: F01N3/035 F01N3/20 F01N9/00

    摘要: The invention relates to a method pertaining to an SCR system wherein a reducing agent is provided to an exhaust gas stream from an engine (230) for purifying said exhaust gas with respect to among other things content of NOx, wherein said SCR system comprises an SCR catalyst (265) and an upstream of said SCR catalyst (265) arranged and for SCR function coated filter (260), a first dosing unit (250a) for provision of reducing agent being arranged upstream of said filter (260) and a second dosing unit (250b) for provision of reducing agent being arranged upstream of said SCR catalyst (265) and downstream of said filter (260). The method comprises the steps of: - continuously determining a differential pressure (P) over said filter (260); - where applicable, controlling dosing of said first and said second dosing unit (250a, 250b) on the basis of the thus determined differential pressure (P) over said filter (260). The invention relates also to a computer programme product comprising programme code (P) for a computer (200; 210) for implementing a method according to the invention. The invention relates also to an SCR system and a motor vehicle equipped with the SCR system.