US 10,481,066 B2Granted

Soot sensor

AssigneeContinental Automotive GmbH

InventorsEckart Garneyer, Sebastian Reiss, Patrick Eber-Neumaier, Alexander Waha

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Abstract

The present disclosure relates to exhaust gas emissions in motor vehicles. The teachings thereof may be embodied in soot sensors. For example, a soot sensor may include: a first electrode; a second electrode; an insulation body between the first electrode and the second electrode configured to allow soot particles to pass with a gas flow into a space defined between the first electrode and the second electrode; a meter evaluating a current between the first electrode and the second electrode resulting from an electrical voltage applied between the first electrode and the second electrode; and elements concentrating the electric field strength formed on at least one of a surface of the first electrode or a surface of the second electrode.

Claims7

Dependent claims

A soot sensor comprising:

a first electrode;
a second electrode defining an internal cavity having a longitudinal extent and radially surrounded by material of the second electrode;
wherein the first electrode is disposed at least partially within the internal cavity of the second electrode;
an insulation body electrically separating the first electrode and the second electrode from one another, the insulation body in physical contact with both the first electrode and the second electrode, projecting into the internal cavity, and configured to allow soot particles to pass with a gas flow into the internal cavity between the first electrode and the second electrode;
a meter evaluating a current between the first electrode and the second electrode resulting from an electrical voltage applied between the first electrode and the second electrode;
and
elements concentrating the electric field strength formed on at least one of a surface of the first electrode or a surface of the second electrode.

4 more elements

Dependencies are inferred from the claim text.

Facts

Application: 15/525,692Filed 10 Nov 2015
Priority: DE 10 2014 222 84410 Nov 2014
Published: US 2017/0315043 A12 Nov 2017
Granted: 19 Nov 2019
Term ends: Not estimatedThe source records don’t support an estimate.

Classification7 codes

G01N 15/0656
Investigating concentration of particle suspensions: using electric, e.g. electrostatic methods or magnetic methods
F01N 11/007
Monitoring or diagnostic devices for exhaust-gas treatment apparatus: the diagnostic devices measuring oxygen or air concentration downstream of…
G01N 27/60
Investigating or analysing materials by the use of electric, electrochemical, or magnetic means: by investigating electrostatic variables , e.g.…
F01N 2560/05
Exhaust systems with means for detecting or measuring exhaust gas components or characteristics: the means being a particulate sensor

Family

US 2017/0315043 A1Pre-grant publication · published 2 Nov 2017
US 10,481,066 B2This patent

From the US filing history. Foreign family members aren’t listed.

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