首页> 外国专利> METHOD AND DEVICE FOR INSPECTING AND SAFEGUARDING A FUNCTIONALITY OF AN EXHAUST GAS AFTERTREATMENT SYSTEM OF A COMBUSTION ENGINE

METHOD AND DEVICE FOR INSPECTING AND SAFEGUARDING A FUNCTIONALITY OF AN EXHAUST GAS AFTERTREATMENT SYSTEM OF A COMBUSTION ENGINE

机译:检查和保障燃烧发动机尾气后处理系统功能的方法和装置

摘要

The invention relates to a method for inspecting and safeguarding a functionality of an exhaust gas aftertreatment system (100) of a combustion engine, wherein the exhaust gas aftertreatment system (100) has an exhaust gas catalytic converter (110) and a voltage source (140), wherein the exhaust gas catalytic converter (110) has an exhaust gas catalysis region (112) and an electrical heater (114) that is selectively supplied with electrical energy by the voltage source (140), wherein the method has the following steps: - determining an actual value (302) that is characteristic of an ohmic resistance of the heater (114), wherein the actual value (302) is determined using an electric current intensity supplied to the heater (114) and a voltage supplied to the heater (114) from the voltage source (140), - providing a setpoint value (304) that is characteristic of an expected ohmic resistance of the heater (114), wherein the setpoint value (304) takes into consideration a specific heating behaviour of the heater (114) and an expected long-term behaviour of the exhaust gas catalytic converter (110).
机译:用于检查和维护内燃机的排气后处理系统(100)的功能的方法技术领域本发明涉及一种用于检查和维护内燃机的排气后处理系统(100)的功能的方法,其中,排气后处理系统(100)具有排气催化转化器(110)和电压源(140)。 ),其中废气催化转化器(110)具有废气催化区域(112)和电加热器(114),该电加热器通过电压源(140)有选择地提供电能,其中该方法具有以下步骤: -确定作为加热器(114)的欧姆电阻的特征的实际值(302),其中,使用提供给加热器(114)的电流强度和提供给加热器的电压来确定实际值(302) (114)从电压源(140)提供-设定值(304),该设定值是加热器(114)的预期欧姆电阻的特征,其中该设定值(304)考虑了特定的加热加热器(114)的性能和废气催化转化器(110)的预期长期性能。

著录项

  • 公开/公告号WO2020207731A1

    专利类型

  • 公开/公告日2020-10-15

    原文格式PDF

  • 申请/专利权人 VITESCO TECHNOLOGIES GMBH;

    申请/专利号WO2020EP57478

  • 发明设计人 ELLMER DIETMAR;

    申请日2020-03-18

  • 分类号F01N11;

  • 国家 WO

  • 入库时间 2022-08-21 11:08:59

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