Control apparatus of engine
US-10400697-B2 · Sep 3, 2019 · US
Method for limiting an air charge of an internal combustion engine
US11927145B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-11927145-B2 |
| Application number | US-202318324029-A |
| Country | US |
| Kind code | B2 |
| Filing date | May 25, 2023 |
| Priority date | Aug 10, 2022 |
| Publication date | Mar 12, 2024 |
| Grant date | Mar 12, 2024 |
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- Title
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Abstract
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A method for limiting an air charge of an internal combustion engine. A maximum permissible pre-controlled charge and an exhaust-gas temperature-dependent delta charge are determined by means of a PI controller. A total permissible charge is determined on the basis of the maximum permissible pre-controlled charge and the exhaust-gas temperature-dependent delta-charge, and the air charge of the internal combustion engine is limited by the total permissible charge.
First claim
Opening claim text (preview).
What is claimed is: 1. A method for limiting an air charge of an internal combustion engine, the method comprising the following steps: determining, using a PI controller, a maximum permissible pre-controlled charge and an exhaust-gas temperature-dependent delta charge; determining a total permissible charge based on the maximum permissible pre-controlled charge and the exhaust-gas temperature-dependent delta-charge; and limiting the air charge of the internal combustion engine by the total permissible charge. 2. The method according to claim 1 , wherein the air charge is an air charge of cylinders of the internal combustion engine. 3. The method according to claim 1 , wherein the maximum permissible pre-controlled charge is determined using a characteristic curve approach or an inverted exhaust gas temperature model. 4. The method according to claim 1 , wherein the exhaust-gas temperature-dependent delta charge determined using the PI controller based on a difference between an actual manifold temperature and a predeterminable limit value of a component to be protected in an exhaust tract. 5. The method according to claim 1 , wherein an exhaust gas temperature model is determined based on a speed of the internal combustion engine and a target temperature at an exhaust valve, in an application phase. 6. The method according to claim 1 , wherein a release condition for the method is issued when one of predeterminable actual temperatures of components installed in an exhaust tract exceeds its respective temperature threshold value. 7. A non-transitory machine-readable storage medium on which is stored a computer program for limiting an air charge of an internal combustion engine, the computer program, when executed by a computer, causing the computer to perform the following steps: determining, using a PI controller, a maximum permissible pre-controlled charge and an exhaust-gas temperature-dependent delta charge; determining a total permissible charge based on the maximum permissible pre-controlled charge and the exhaust-gas temperature-dependent delta-charge; and limiting the air charge of the internal combustion engine by the total permissible charge. 8. An electronic control device configured to limit an air charge of an internal combustion engine, the control device configured to: determine, using a PI controller, a maximum permissible pre-controlled charge and an exhaust-gas temperature-dependent delta charge; determine a total permissible charge based on the maximum permissible pre-controlled charge and the exhaust-gas temperature-dependent delta-charge; and limit the air charge of the internal combustion engine by the total permissible charge.
Assignees
Inventors
Classifications
- F02D35/0023Primary
Controlling air supply · CPC title
of combustion-air · CPC title
- F02D41/0002Primary
Controlling intake air · CPC title
for control of turbo-charged or super-charged engines (control of the pumps per se F02B37/12) · CPC title
Temperature of the exhaust gas treatment apparatus · CPC title
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- What does patent US11927145B2 cover?
- A method for limiting an air charge of an internal combustion engine. A maximum permissible pre-controlled charge and an exhaust-gas temperature-dependent delta charge are determined by means of a PI controller. A total permissible charge is determined on the basis of the maximum permissible pre-controlled charge and the exhaust-gas temperature-dependent delta-charge, and the air charge of the …
- Who is the assignee on this patent?
- Bosch Gmbh Robert
- What technology area does this patent fall under?
- Primary CPC classification F02D35/0023. Mapped technology areas include Mechanical Engineering.
- When was this patent published?
- Publication date Tue Mar 12 2024 00:00:00 GMT+0000 (Coordinated Universal Time) (B2). Legal status and post-grant events are not shown on this page.
- What related patents are in patentsdb?
- We list 3 related publications on this page (citations in our corpus or others sharing the same primary CPC).