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公开(公告)号：US20170268398A1
公开(公告)日：2017-09-21
申请号：US15329974
申请日：2015-06-20
Applicant: Daimler AG
Inventor： Zhiping HAN , Bryant PHAM , Justin KOSIK , Charles-Benoit CHAUMETTE
CPC classification number: F01N3/208 , F01N3/2066 , F01N9/00 , F01N11/00 , F01N2550/05 , F01N2560/026 , F01N2610/02 , F01N2900/0418 , F01N2900/1402 , F01N2900/1818 , Y02A50/2325 , Y02T10/24 , Y02T10/47
Abstract: A method and a control assembly for operating an exhaust gas system of a motor vehicle is disclosed. Measuring values are evaluated, which indicate a content of nitrogen oxides in an exhaust gas downstream of a catalytic device. The catalytic device is adapted to diminish the content of nitrogen oxides in the exhaust gas produced by an engine of the motor vehicle. Based on the measuring values a quality of a reducing agent supplied to the catalytic device is assessed. The method includes determining whether reducing agent has been filled into a storage tank. A plurality of measuring values is captured during a predetermined period of time, and a magnitude and a frequency of the plurality of measuring values are taken into account to assess the quality of the reducing agent.
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公开(公告)号：US20160356194A1
公开(公告)日：2016-12-08
申请号：US15105764
申请日：2014-12-04
Applicant: DAIMLER AG
Inventor： Zhiping HAN , Bryant PHAM
CPC classification number: F01N3/208 , B01D53/90 , B01D53/9431 , B01D53/9495 , B01D2251/2067 , B01D2255/911 , F01N3/2066 , F01N2550/05 , F01N2560/02 , F01N2560/026 , F01N2900/0418 , F01N2900/1402 , Y02A50/2325 , Y02T10/24
Abstract: A method for operating an exhaust gas system is provided. The method includes determining an amount of a reducing agent to be supplied to the exhaust gas of an engine and evaluating measurements which indicate a content of nitrogen oxides in the exhaust gas downstream of a catalytic device adapted to diminish the content of nitrogen oxides. A magnitude and a frequency of the measurements are taken into account in determining the amount of the reducing agent to be supplied. A plurality of measurements is captured during a predetermined period of time. A magnitude of a measurement captured within this period of time is related to a quantity derived from the respective magnitudes of the plurality of measurements. The related measurement is utilized to determine the amount of the reducing agent to be supplied. A control assembly for operating an exhaust gas system is also provided.
Abstract translation: 提供一种操作废气系统的方法。 该方法包括确定要供应给发动机废气的还原剂的量，并评估指示适于减少氮氧化物含量的催化装置下游的废气中的氮氧化物含量的测量值。 在确定要供应的还原剂的量时，考虑测量的幅度和频率。 在预定时间段期间捕获多个测量。 在该时间段内捕获的测量的大小与从多个测量的各自的量值导出的量相关。 使用相关测量来确定要供应的还原剂的量。 还提供了一种用于操作废气系统的控制组件。
