Estimation of Air Fuel Ratio of Individual Cylinders in SI Engines by Means of MISiC Sensor Signals in a Linear Regression Model

Metal insulator silicon carbide field-effect devices, MISiC sensors, with catalytic metal gates of TaSix + Pt have been evaluated as fast linear lambda detectors. Application areas are for example engine cold start and cylinder specific lambda transient detection. The sensor is placed in the exhaust...

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Published in:SAE transactions 2002-01, Vol.111, p.1392-1400
Main Authors: Larsson, Olle, Göras, Anders, Nytomt, Jan, Carlsson, Christian, Spetz, Anita Lloyd, Artursson, Tom, Holmberg, Martin, Lundström, Ingemar, Ekedahl, Lars-G., Tobias, Peter
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container_title SAE transactions
container_volume 111
creator Larsson, Olle
Göras, Anders
Nytomt, Jan
Carlsson, Christian
Spetz, Anita Lloyd
Artursson, Tom
Holmberg, Martin
Lundström, Ingemar
Ekedahl, Lars-G.
Tobias, Peter
description Metal insulator silicon carbide field-effect devices, MISiC sensors, with catalytic metal gates of TaSix + Pt have been evaluated as fast linear lambda detectors. Application areas are for example engine cold start and cylinder specific lambda transient detection. The sensor is placed in the exhaust manifold system, where the branches from the different cylinders are joined. By using a linear regression model the MISiC sensor could predict a lambda value, chosen randomly as one of six values between 0.93 and 1.03. Specially built laboratory equipment, Moving Gas Outlet (MGO), was used to estimate the sensor response time.
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title Estimation of Air Fuel Ratio of Individual Cylinders in SI Engines by Means of MISiC Sensor Signals in a Linear Regression Model
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