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1.发明申请Diagnosis method and control unit for performing a diagnosis of a lambda sensor of the UEGO type of an exhaust system for an internal combustion engine 有权用于对内燃机的排气系统的UEGO类型的λ传感器进行诊断的诊断方法和控制单元公开(公告)号：US20130234744A1
公开(公告)日：2013-09-12
申请号：US13687141
申请日：2012-11-28
Applicant: MAGNETI MARELLI S.P.A.
Inventor： Piero Maria Carbonaro , Marco Ceroni
CPC classification number: G01R31/024 , F02D41/1456 , F02D41/1494 , F02D41/1495 , F02D2041/2089 , F02D2041/2093 , G01M15/104 , G01N27/4175
Abstract: A method performs a diagnosis of a lambda sensor of a “UEGO” type of an exhaust system for an internal-combustion engine. The lambda sensor includes a series of pins. The diagnosis method comprises steps of: heating the lambda sensor to cause the lambda sensor to reach an inner temperature that is higher than about 600° C.; polarizing a first one of the pins by connecting the first pin to a supply voltage through a first limiting resistance; measuring a voltage of all of the pins while the first pin is connected to the supply voltage; and diagnosing a presence of a short circuit to an electrical ground if the voltage of at least one of the pins is lower than a predetermined threshold. A control unit performs the diagnosis.
Abstract translation: 一种方法执行用于内燃机的“UEGO”型排气系统的λ传感器的诊断。 λ传感器包括一系列引脚。 诊断方法包括以下步骤：加热λ传感器以使λ传感器达到高于约600℃的内部温度; 通过经由第一限制电阻将第一引脚连接到电源电压来使第一引脚偏振; 当第一引脚连接到电源电压时，测量所有引脚的电压; 以及如果所述至少一个引脚的电压低于预定阈值，则诊断与所述电气接地的短路的存在。 控制单元执行诊断。
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2.发明授权Diagnosis method and control unit for performing a diagnosis of a lambda sensor of the UEGO type of an exhaust system for an internal combustion engine 有权用于对内燃机的排气系统的UEGO类型的λ传感器进行诊断的诊断方法和控制单元公开(公告)号：US09128139B2
公开(公告)日：2015-09-08
申请号：US13687141
申请日：2012-11-28
Applicant: Magneti Marelli S.p.A.
Inventor： Piero Maria Carbonaro , Marco Ceroni
CPC classification number: G01R31/024 , F02D41/1456 , F02D41/1494 , F02D41/1495 , F02D2041/2089 , F02D2041/2093 , G01M15/104 , G01N27/4175
Abstract: A method performs a diagnosis of a lambda sensor of a “UEGO” type of an exhaust system for an internal-combustion engine. The lambda sensor includes a series of pins. The diagnosis method comprises steps of: heating the lambda sensor to cause the lambda sensor to reach an inner temperature that is higher than about 600° C.; polarizing a first one of the pins by connecting the first pin to a supply voltage through a first limiting resistance; measuring a voltage of all of the pins while the first pin is connected to the supply voltage; and diagnosing a presence of a short circuit to an electrical ground if the voltage of at least one of the pins is lower than a predetermined threshold. A control unit performs the diagnosis.
Abstract translation: 一种方法执行用于内燃机的“UEGO”型排气系统的λ传感器的诊断。 λ传感器包括一系列引脚。 诊断方法包括以下步骤：加热λ传感器以使λ传感器达到高于约600℃的内部温度; 通过经由第一限制电阻将第一引脚连接到电源电压来使第一引脚偏振; 当第一引脚连接到电源电压时，测量所有引脚的电压; 以及如果所述至少一个引脚的电压低于预定阈值，则诊断与所述电气接地的短路的存在。 控制单元执行诊断。
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