METHODS AND SYSTEMS FOR AN OXYGEN SENSOR
First Claim
Patent Images
1. A method for an engine system, comprising:
- based on outputs from a catalyzing sensor and a non-catalyzing sensor, indicating an intake oxygen concentration and a fuel vapor concentration;
adjusting exhaust gas recirculation responsive to the oxygen concentration; and
adjusting fuel injection responsive to the fuel vapor concentration.
1 Assignment
0 Petitions
Accused Products
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.
-
Citations
20 Claims
-
1. A method for an engine system, comprising:
-
based on outputs from a catalyzing sensor and a non-catalyzing sensor, indicating an intake oxygen concentration and a fuel vapor concentration; adjusting exhaust gas recirculation responsive to the oxygen concentration; and adjusting fuel injection responsive to the fuel vapor concentration. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
-
-
11. A method, comprising:
-
controlling fuel vapor purge based on outputs from a catalyzing oxygen sensor and a non-catalyzing oxygen sensor, the catalyzing sensor and the non-catalyzing sensor housed in a single sensor housing positioned in an engine intake system; and controlling exhaust gas recirculation based on output from the non-catalyzing oxygen sensor, the catalyzing sensor and the non-catalyzing sensor housed in a single sensor housing. - View Dependent Claims (12, 13, 14, 15, 16, 17)
-
-
18. A system, comprising:
-
an engine with an intake passage and an exhaust passage; an exhaust gas recirculation system coupled between the intake passage and the exhaust passage; a catalyzing oxygen sensor and a non-catalyzing oxygen sensor positioned in the intake passage and configured to output indications of oxygen concentration and fuel vapor concentration; and a control system in communication with the sensors, the control system including non-transitory instructions to adjust an amount of exhaust gas recirculation based on the indication of oxygen concentration and adjust one or more of fuel vapor purge and fuel injection based on the indication of fuel vapor concentration. - View Dependent Claims (19, 20)
-
Specification