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Methods And Systems For Oxygen Sensor

An oxygen sensor, sensor technology, used in charging systems, machines/engines, electrical controls, etc., to solve problems such as confusing sensor measurements, sensor accuracy measurements, and/or control reductions

Active Publication Date: 2014-09-24
FORD GLOBAL TECH LLC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

The technical effect of this patented technology is its ability to improve upon existing methods used during data processing without affecting their accuracy.

Problems solved by technology

The technical problem addressed in this patented technology relates to improving the performance or reliability of measuring and controlling the amount of exhaust released during operation through use of recircling techniques for engines with internal exhaust systems. This helps prevent excessive emission levels caused by uncontrolled re-ignition events while maintaining good efficiency.

Method used

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  • Methods And Systems For Oxygen Sensor
  • Methods And Systems For Oxygen Sensor
  • Methods And Systems For Oxygen Sensor

Examples

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Embodiment Construction

[0010] The following description relates to methods and systems for an engine system having an exhaust gas recirculation (EGR) system and catalytic and non-catalytic intake air composition sensors, such as oxygen sensors. In one example, a method includes indicating an intake oxygen concentration and a fuel vapor concentration based on an output from a catalytic sensor and an output from a non-catalytic sensor. The method further includes adjusting EGR in response to the oxygen concentration, and adjusting fuel injection and / or fuel vapor purge in response to the fuel vapor concentration. In such an example, the non-catalytic sensor output may be indicative of oxygen concentration, while the difference between the catalytic sensor output and the non-catalytic sensor output may be indicative of fuel vapor concentration. Accordingly, a measurement of EGR may be obtained that is not affected by the presence of fuel vapors in the engine intake. Accordingly, EGR may be controlled ...

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Abstract

Various systems and methods are described for an engine system with an exhaust gas recirculation system and catalyzing and non-catalyzing intake oxygen sensors. In one example, the catalyzing oxygen sensor is utilized to measure and control exhaust gas recirculation while fuel vapor purge is measured and controlled based on the catalyzing and non-catalyzing sensors.

Description

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Claims

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Application Information

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Owner FORD GLOBAL TECH LLC
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