Self-Cleaning Micro-Windows for In-Tailpipe Optical Exhaust Gas Measurements
Paper i proceeding, 2020

Exhaust gas measurement in the harsh environment of the tailpipe of a combustion engine by optical techniques is a highly robust technique, provided that optical access is maintained in the presence of particulate matter (PM). The considerations are presented for the systematic design of membranes with integrated heaters in SiC-on-Si technology for generating a well-defined lateral temperature profile with peak temperatures above 600 °C. Periodically raising the temperature of the membranes to such a level is demonstrated to keep the surface transparent by oxidation of soot deposits. This paper is about continuous heating of the membrane to a temperature slightly higher than that of the exhaust gas. At such temperatures thermophoretic repulsion of PM allows allows long-term optical measurement in the exhaust without the thermo-mechanical loading by repetitive thermal cycling.

Optically transparent window

Optical MEMS

Soot deposition

Membrane

Exhaust gas measurement

Författare

Mohammadamir Ghaderi

Chalmers, Mikroteknologi och nanovetenskap (MC2), Elektronikmaterial och system

Luke M. Middelburg

TU Delft

David Bilby

Ford Motor Company

Jaco H. Visser

Ford Motor Company

Per Lundgren

Chalmers, Mikroteknologi och nanovetenskap (MC2), Elektronikmaterial och system

Peter Enoksson

Chalmers, Mikroteknologi och nanovetenskap (MC2), Elektronikmaterial och system

Reinoud F. Wolffenbuttel

TU Delft

IEEE International Symposium on Industrial Electronics

1104-1108 9152437

2020 IEEE 29th International Symposium on Industrial Electronics (ISIE)
Delft, Netherlands,

Ämneskategorier

Energiteknik

Bearbetnings-, yt- och fogningsteknik

Annan materialteknik

DOI

10.1109/ISIE45063.2020.9152437

Mer information

Senast uppdaterat

2020-12-23