Particulate matter sensor unit

Inactive Publication Date: 2013-06-13
HYUNDAI MOTOR CO LTD +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

The present invention is about a particulate matter sensor unit that can accurately detect the amount of particulate matter (PM) that is released from a particulate filter and can also detect any damage that might occur to the filter. The sensor unit includes a silicone electrode layer with a front surface that is etched to a specific depth to form a protruding electrode, followed by the addition of an insulation layer to cover the protruding electrode. The insulation layer is then selectively removed to form a sensing electrode pad and a heater electrode. This design allows for the accurate detection of PM and ensures compliance with exhaust gas regulations. Overall, the particulate matter sensor unit offers improved accuracy in detecting PM and damage to the particulate filter.

Problems solved by technology

In the future, a pressure difference sensor will not be used to detect damage to the DPF according to exhaust gas regulations, and further, the detection precision of the pressure difference sensor is low.

Method used

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Embodiment Construction

[0036]Reference will now be made in detail to various embodiments of the present invention(s), examples of which are illustrated in the accompanying drawings and described below. While the invention(s) will be described in conjunction with exemplary embodiments, it will be understood that the present description is not intended to limit the invention(s) to those exemplary embodiments. On the contrary, the invention(s) is / are intended to cover not only the exemplary embodiments, but also various alternatives, modifications, equivalents and other embodiments, which may be included within the spirit and scope of the invention as defined by the appended claims.

[0037]An exemplary embodiment of the present invention will hereinafter be described in detail with reference to the accompanying drawings.

[0038]FIG. 1 is a schematic interior perspective view showing a condition that a particulate matter sensor unit is disposed in an exhaust line according to an exemplary embodiment of the presen...

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Abstract

A particulate matter (PM) sensor unit may include an exhaust line where exhaust gas passes, and a PM sensor that may be disposed at one side of the exhaust line and that generates a signal when particulate matter included in the exhaust gas passes the vicinity thereof, wherein the PM sensor may be an electrostatic induction type that generates an induction charge while the particulate matter having an electric charge passes the vicinity thereof.

Description

CROSS-REFERENCE TO RELATED APPLICATION[0001]The present application claims priority to Korean Patent Application No. 10-2011-0132255 filed in the Korean Intellectual Property Office on Dec. 9, 2011, the entire contents of which is incorporated herein for all purposes by this reference.BACKGROUND OF THE INVENTION[0002]1. Field of the Invention[0003]The present invention relates to a particulate matter sensor unit that accurately and effectively detects damage to a particulate filter filtering particulate matter (PM) included in exhaust gas and transmits the detected signal to a control portion.[0004]2. Description of Related Art[0005]A diesel particulate filter (DPF) has been being applied to a diesel vehicle so as to reduce PM thereof, and a pressure difference sensor is applied to detect a PM amount that is trapped in the diesel particulate filter.[0006]In the future, a pressure difference sensor will not be used to detect damage to the DPF according to exhaust gas regulations, and...

Claims

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Application Information

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IPC IPC(8): G01N7/06H05K13/00
CPCG01N15/0656G01N33/0027G01N27/02F01N2560/05F01N3/021F01N11/00
Inventor LEE, JIN HACHO, JI HOCHUN, KUKJINKANG, SUNGCHANJANG, KEUNHO
Owner HYUNDAI MOTOR CO LTD
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