Semi-empirical engine-out soot model
AssigneeGM Global Technology Operations LLC
InventorsDavid E. Edwards, Giorgio Sticchi, Andrea Dutto, Min Sun
Life of this patent
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Abstract
An automotive vehicle includes an internal combustion engine that combusts an air/fuel mixture thereby generating exhaust gas containing particulate matter, and an exhaust after-treatment component that collects the particulate matter. A regeneration system burns off the collected particulate matter thereby regenerating the exhaust after-treatment component. A controller obtains a model of the combustion that is based on a kinetic controlled combustion phase and a mixing controlled combustion phase, and determines a point on the model with respect to current engine conditions that indicates an amount of the particulate matter in the exhaust gas.
Claims20
An automotive vehicle comprising:
- an internal combustion engine configured to perform combustion of an air/fuel mixture thereby generating exhaust gas containing particulate matter;
- an exhaust after-treatment component configured to collect the particulate matter;
- a regeneration system configured to regenerate the exhaust after-treatment component by burning off the collected particulate matter;
- and
- a controller configured to obtain a model of the combustion based on a kinetic controlled combustion phase and a mixing controlled combustion phase, and to determine a point on the model with respect to current engine conditions indicating an amount of the particulate matter in the exhaust gas.
A method of determining an amount of particulate matter in exhaust gas output from an internal combustion engine, the method comprising:
- performing, via the internal combustion engine, combustion of an air/fuel mixture to generate the exhaust gas;
- collecting, via an exhaust after-treatment component, particulate matter contained in the exhaust gas;
- obtaining, via a controller, a model of the combustion based on a kinetic controlled combustion phase and a mixing controlled combustion phase;
- determining, via the controller, a point on the model with respect to current engine conditions indicating an amount of the particulate matter in the exhaust gas;
- and
- initiating a regeneration process, via a regeneration system, based on the indicated amount of particulate matter in the exhaust gas to burn off the collected particulate matter and regenerate the after-treatment component.
Dependencies are inferred from the claim text.