Invention Grant
- Patent Title: Method, processing unit, and computer program for operating an internal combustion engine having at least one catalytic converter
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Application No.: US17844177Application Date: 2022-06-20
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Publication No.: US11933239B2Publication Date: 2024-03-19
- Inventor: Michael Fey
- Applicant: Robert Bosch GmbH
- Applicant Address: DE Stuttgart
- Assignee: Robert Bosch GmbH
- Current Assignee: Robert Bosch GmbH
- Current Assignee Address: DE Stuttgart
- Agency: Michael Best & Friedrich LLP
- Priority: DE 2021207721.8 2021.07.20
- Main IPC: F02D41/14
- IPC: F02D41/14 ; F02D41/02 ; F01N3/10

Abstract:
A method is directed to operating an internal combustion engine having at least one catalytic converter, wherein control interventions of a lambda control for controlling an exhaust gas composition of the engine are deactivated. The method includes the steps of ascertaining a current exhaust gas composition upstream of the catalytic converter, determining a current oxygen fill level of the catalytic converter on the basis of the ascertained current exhaust gas composition, ascertaining a planned control intervention on a composition of an air-fuel mixture supplied to the engine on the basis of the determined current oxygen fill level of the catalytic converter, ascertaining a current exhaust gas composition downstream of the catalytic converter, ascertaining a future exhaust gas composition downstream of the catalytic converter resulting on the basis of an air-fuel mixture already supplied to the engine, and reactivating the lambda control and specifying a control intervention to be carried out.
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