Ford Global Technolgoies, LLC

Ford Motor Company Limited

Jacobus Hendrik Visser

Richard E Soltis

Gopichandra Surnilla

Eleftherios M Logothetis

Margherita Zanini-Fisher

Douglas R Hamburg

Timothy Joseph Clark

David John Kubinski

Michiel Jacques Van Nieuwstadt

Daniel A Makled

Chaitanya Kumar Narula

David James Scholl

Michael Howard Parsons

John David Russell

Allan Joseph Kotwicki

William Charles Ruona

Furqan Zafar Shaikh

Allan J Lippa

Daniel Lawrence Meyer

Jeffrey A Cook

Yi Ding

John Paul Bogema

Scott Donald Cooper

David K Chen

Garry Anthony Zawacki

Timothy Webb

Philip W Husak

Christopher House

Ed Kulik

E M Logothetis

Carina Eva Irene Bjornsson

Carol S Smith

Michael John Cullen

Joseph Lyle Thomas

Stephen B Smith

Devesh Upadhyay

Christopher Paul Glugla

Garth Michael Meyer

In Kwang Yoo

Mordecai Shelef

Hao Zhang

Evangelos P Skoures

Andrew A Adamczyk

David Bilby

Nathan Kempema

Lajos Rimai

Reinoud Felix Wolffenbuttel

A method for spectroscopically detecting a chemical in a gas sample includes illuminating the gas sample with ultraviolet light and photolyzing a first chemical in the gas sample to generate a photolyzed gas sample and spectroscopically detecting a second chemical in the photolyzed gas sample. The second chemical has an optical absorption range within a respective optical absorption range of the first chemical.

Automotive exhaust ultraviolet spectroscopy

Systems and methods for operating an internal combustion engine that includes an oxygen sensor are described. In one example, a voltage that is applied to a heating element of an oxygen sensor is integrated to determine a resistance of the heating element. The resistance of the heating element is the basis for adjusting voltage applied to the heating element during subsequent engine starts.

Methods and system for operating an oxygen sensor

Methods and systems are provided for determining an amount of alcohol in fuel injected into an engine based on outputs from an exhaust gas sensor. In one example, a method includes estimating a first fuel alcohol content based on an air-fuel ratio estimated with the exhaust oxygen sensor and estimating a second fuel alcohol content based on a change in sensor output during modulating a reference voltage of the exhaust oxygen sensor between a first and second voltage. The method further includes adjusting engine operation based on a difference between the first and second fuel alcohol contents.

Methods and system for fuel ethanol content estimation and engine control

A method of operating a gas sensor is disclosed, wherein the sensor includes a pumping electrode configuration and a measuring electrode configuration, and wherein the method includes operating the sensor in a first mode in which a first, lower pumping potential sufficient to electrochemically remove an interfering compound from the sensor without electrochemically removing the analyte from the sensor is applied across the pumping electrode configuration and a measuring potential sufficient to electrochemically remove the analyte from the sensor is applied across the measuring electrode configuration; and operating the sensor in a second mode in which a second, higher pumping potential sufficient to electrochemically remove the analyte from the sensor is applied to the pumping electrode configuration.

System and method for updating a baseline output of a gas sensor

Embodiments for adjusting engine operating parameters based on output from an exhaust humidity sensor are provided. One example method for an engine comprises based on a dew point of exhaust gas, adjusting an exhaust gas sensor heater configured to heat an exhaust gas sensor disposed in an exhaust passage of the engine, the dew point based on output from a humidity sensor disposed in the exhaust passage.

Exhaust humidity sensor

Methods are provided for accurately learning part-to-part variability of an intake or exhaust oxygen sensor. A correction factor is learned based on a sensor reading in dry air conditions, the dry air reading learned by applying a higher reference voltage to the sensor. An ethanol transfer function is then adjusted based on the learned correction factor so as to improve the accuracy of combusted fuel ethanol content estimation.

Methods and systems for fuel ethanol content determination via an oxygen sensor

Various systems and methods are described for an engine system with an exhaust gas recirculation system. In one example method, a correction for a gas constituent sensor is determined based on output from the gas constituent sensor and output from a pressure sensor over a range of boost pressure. The gas constituent sensor output is adjusted based on the correction, and an amount of exhaust gas recirculation is adjusted based on the adjusted gas constituent sensor output.

Methods and systems for a gas constituent sensor

Methods and systems are provided for accurately learning the zero point of an intake gas oxygen sensor in varying ambient humidity conditions. The learned zero point is corrected based on an estimated ambient humidity to calibrate the reading for dry air conditions or standard humidity conditions. EGR control is performed by comparing the output of an intake oxygen sensor during EGR conditions relative to the humidity-corrected zero point.

Methods and systems for an oxygen sensor

Methods are provided for accurately learning part-to-part variability of an intake or exhaust oxygen sensor. A correction factor is learned based on sensor readings at voltages above and below a voltage corresponding to dry air conditions. An ethanol transfer function is then adjusted based on the learned correction factor so as to improve the accuracy of combusted fuel ethanol content estimation.

Various systems and methods for detecting exhaust reductant injector degradation based on an exhaust NOsensor are disclosed. In one example, degradation of the reductant injector is indicated when an actual NOsensor output differs from an expected NOsensor output by more than a threshold amount under engine off conditions.

Method and system for reductant injector degradation

A method of operating an internal combustion engine having a reductant delivery and storage system in an emission control system, comprising of correlating a change in a monitored operating condition with a refill event to determine whether a reductant-diluting substance has been added to the reductant storage system; and limiting vehicle operation based on the correlation.

System and method for monitoring reductant quality

A method is disclosed for operating an electrochemical gas sensor with a measuring electrode pair and a pumping electrode pair. The method includes obtaining a measurement of the interfering species at a location spatially adjacent to a measuring electrode of the measuring electrode pair; and adjusting one or more of an operation or an output processing of the electrochemical gas sensor based on the measurement of the interfering species. In this manner, the measurement of the interfering species may be used to adjust the removal rates of the interfering species and/or to adjust an offset of an analyte measurement to compensate for the presence of the interfering species.

System and method for improving accuracy of a gas sensor

A system is described using a fuel quality sensor for controlling various aspects of engine operation. In particular, an acoustic wave sensor is utilized to measure viscosity and density of gasoline fuels. This measurement is utilized to predict engine combustion quality during an engine start. Based on the prediction, the method adjusts engine operating parameters (such as fuel injection amount and ignition timing) to achieve improved vehicle driveability and engine combustion.

Engine control with fuel quality sensor

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Farmington Hills, MI, United States of America

Jacobus Hendrik Visser