Method for Determining the Oxygen Load of a Catalytic Converter of an Internal Combustion Engine, and Exhaust System of an Internal Combustion Engine
AssigneeVitesco Technologies GmbH
InventorsPaul Rodatz, Gerhard Haft, Hong Zhang
Life of this patent
Estimating the term…
Abstract
Various embodiments include a method of ascertaining the oxygen load of a catalytic converter disposed in an exhaust tract of an internal combustion engine with an exhaust gas sensor is disposed downstream of the catalytic converter comprising: generating a signal using the exhaust gas sensor indicating a proportion of nitrogen oxide and/or ammonia in the exhaust gas; and ascertaining the oxygen load of the catalytic converter at least partly on the basis of the signal from the exhaust gas sensor.
Claims10
A method of ascertaining the oxygen load of a catalytic converter disposed in an exhaust tract of an internal combustion engine with an exhaust gas sensor is disposed downstream of the catalytic converter, the method comprising:
- generating a signal using the exhaust gas sensor indicating a proportion of nitrogen oxide and/or ammonia in the exhaust gas;
- and
- ascertaining the oxygen load of the catalytic converter at least partly on the basis of the at the signal from the exhaust gas sensor.
An exhaust tract for an internal combustion engine, the exhaust tract comprising:
- a catalytic converter for aftertreatment of an exhaust gas from the internal combustion engine;
- an exhaust gas sensor disposed downstream of the catalytic converter generating a signal indicating a proportion of nitrogen oxide and/or ammonia in the exhaust gas;
- and
- a control unit receiving the signal from the exhaust gas sensor;
- wherein the control unit is programmed to:
- generating a signal using the exhaust gas sensor indicating a proportion of nitrogen oxide and/or ammonia in the exhaust gas;
- and
- ascertaining the oxygen load of the catalytic converter at least partly on the basis of the signal from the exhaust gas sensor.
An internal combustion engine for a vehicle, comprising:
- a cylinder for combustion of a fuel;
- an exhaust tract leading an exhaust gas from the cylinder;
- a catalytic converter for aftertreatment of the exhaust gas;
- an exhaust gas sensor disposed downstream of the catalytic converter generating a signal indicating a proportion of nitrogen oxide and/or ammonia in the exhaust gas;
- and
- a control unit receiving the signal from the exhaust gas sensor;
- wherein the control unit is programmed to:
- generating a signal, using the exhaust gas sensor indicating a proportion of nitrogen oxide and/or ammonia in the exhaust gas;
- and
- ascertaining the oxygen load of the catalytic converter at least partly on the basis of the signal from the exhaust gas sensor.
Dependencies are inferred from the claim text.