Apparatus and method for removing poison of lamda sensor

A technology of oxygen sensor and predetermined value, which is applied in the testing of measuring devices, exhaust devices, machinery/structural components, etc., can solve the problems of oxygen signal deterioration, electrode poisoning, etc., and achieve the effect of suppressing deterioration.

Inactive Publication Date: 2017-01-25
HYUNDAI MOTOR CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0012] In this case, an electrode for measuring the oxygen concentration is provided inside the oxygen sensor, however, the electrode of the oxygen sensor is poisoned due to various reasons (for example, poisoning due to siloxane)
If the electrodes of the oxygen sensor are poisoned, the oxygen signal output from the oxygen sensor is degraded

Method used

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  • Apparatus and method for removing poison of lamda sensor
  • Apparatus and method for removing poison of lamda sensor
  • Apparatus and method for removing poison of lamda sensor

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Embodiment Construction

[0043] The following description is merely exemplary in nature and is not intended to limit the disclosure, application, or use. It should be understood that throughout the drawings, corresponding reference numerals indicate like or corresponding parts or features.

[0044] As those skilled in the art would realize, the described embodiments may be modified in various different ways, all without departing from the spirit or scope of the present disclosure.

[0045] For convenience of description, the dimensions and thicknesses of the configurations shown in the drawings are selectively provided so that the present disclosure is not limited to the configurations shown in the drawings, and the thicknesses are exaggerated for clarity of some parts and regions. .

[0046] A poisoning removal device for an oxygen sensor according to an embodiment of the present disclosure will now be described with reference to the accompanying drawings.

[0047] figure 1 is a schematic diagram ...

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Abstract

The invention discloses an apparatus and method for removing poison of lamda sensor. The removing poison apparatus of a lambda sensor includes: a lambda sensor detecting an oxygen concentration included in an exhaust gas; and a control unit differentiating a heating temperature and a heating time to remove poison of the lambda sensor depending on a lambda signal output from the lambda sensor in an overrun condition of the engine. By heating the lambda sensor depending on the magnitude of the lambda signal output from the lambda sensor, the lambda sensor may be inhibited from being degraded by combusting the material poisoned to the electrode of the lambda sensor and the failure of the lambda sensor may be correctly determined.

Description

[0001] Cross-references to related applications [0002] This application claims the benefit of Korean Patent Application No. 10-2015-0099200 filed on Jul. 13, 2015, the entire contents of which are hereby incorporated by reference. technical field [0003] The present disclosure relates to devices and methods for depoisoning oxygen sensors. Background technique [0004] The statements in this section merely provide background information related to the present disclosure and may not constitute prior art. [0005] Generally, a diesel engine exhibits advantages in fuel consumption and output torque, but it exhibits disadvantages in exhaust gas. That is, although a diesel engine produces less carbon monoxide CO and hydrocarbons HC, it produces more nitrogen oxides (commonly, referred to as NOx) and particulate matter due to the high temperature of the combustion chamber due to the high compression ratio of the diesel engine. [0006] Typically, particulate matter can be redu...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N27/407
CPCG01N27/4077F01N2560/025F01N2560/20F02D41/042F02D41/123F02D41/1454F02D41/1494F02D41/1495G01M15/104
Inventor 张和镕徐茂硕金新杰陈正植刘陈昇朴圣珉刘成日姜基洪徐昇佑
Owner HYUNDAI MOTOR CO LTD
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