公开(公告)号：US11879368B2

公开(公告)日：2024-01-23

申请号：US17893513

申请日：2022-08-23

Applicant: Robert Bosch GmbH

Inventor： Frank Goldeck ,  Angela Leo ,  Henrik Smith ,  Isabell Kathrin Ohrnberger ,  Jens Reimer ,  Rouven Leibbrand

IPC: F01N11/00 ,  F01N3/10 ,  F01N3/32 ,  F01N13/08 ,  F01N3/22 ,  F01N3/05 ,  F01N1/14 ,  F01N3/30

CPC classification number: F01N11/007 ,  F01N3/101 ,  F01N1/14 ,  F01N3/05 ,  F01N3/22 ,  F01N3/222 ,  F01N3/225 ,  F01N3/30 ,  F01N3/32 ,  F01N3/323 ,  F01N3/326 ,  F01N13/082 ,  F01N2270/02 ,  F01N2270/04 ,  F01N2270/10 ,  F01N2550/14 ,  F01N2560/07 ,  F01N2610/085

Abstract: A method (200) for ascertaining an air volume provided by means of an electric air pump (134) in an exhaust system (120) of an internal combustion engine (110), including detecting at least one activation parameter (5) of the air pump and ascertaining (220) a provided air mass flow rate (8) on the basis of a calculation specification from the at least one activation parameter (5) by utilizing an inertia of the air pump (134) and/or an inertia of the air upstream and/or downstream from the air pump (134) and/or a differential pressure from upstream from the air pump to downstream from the air pump. In addition, a processing unit and a computer program for carrying out a method (200) of this type is provided.

公开(公告)号：US20230061467A1

公开(公告)日：2023-03-02

申请号：US17893513

申请日：2022-08-23

Applicant: Robert Bosch GmbH

Inventor： Frank Goldeck ,  Angela Leo ,  Henrik Smith ,  Isabell Kathrin Ohrnberger ,  Jens Reimer ,  Rouven Leibbrand

IPC: F01N11/00 ,  F01N3/10

Abstract: A method (200) for ascertaining an air volume provided by means of an electric air pump (134) in an exhaust system (120) of an internal combustion engine (110), including detecting at least one activation parameter (5) of the air pump and ascertaining (220) a provided air mass flow rate (8) on the basis of a calculation specification from the at least one activation parameter (5) by utilizing an inertia of the air pump (134) and/or an inertia of the air upstream and/or downstream from the air pump (134) and/or a differential pressure from upstream from the air pump to downstream from the air pump. In addition, a processing unit and a computer program for carrying out a method (200) of this type is provided.