Method and device for operating an internal combustion engine
US-2024287927-A1 · Aug 29, 2024 · US
Method for diagnosing a liquid-cooled exhaust manifold of an internal combustion engine
US8997726B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-8997726-B2 |
| Application number | US-201113636838-A |
| Country | US |
| Kind code | B2 |
| Filing date | Mar 15, 2011 |
| Priority date | Mar 26, 2010 |
| Publication date | Apr 7, 2015 |
| Grant date | Apr 7, 2015 |
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Abstract
Official abstract text for this publication.
A method is provided for checking the functional capacity of a liquid-cooled exhaust manifold of an internal combustion engine, having an exhaust line connected to the exhaust manifold, in the course of which an exhaust gas sensor having an electrical heater is arranged. During the operation of the internal combustion engine, the electrical resistance of the exhaust gas sensor is determined, on the basis of which the current value of the exhaust gas temperature is evaluated, and compared to a target value of the exhaust gas temperature, which is expected at this point in the operation of the internal combustion engine. Depending on the result of the comparison, the functional capacity of the liquid-cooling of the exhaust manifold is estimated.
First claim
Opening claim text (preview).
What is claimed is: 1. A method for testing the functionality of a liquid-cooled exhaust manifold of an internal combustion engine having an exhaust line connected to the exhaust manifold and an exhaust-gas sensor provided with an electric heating device, comprising: determining an electrical resistance of the exhaust-gas sensor during the operation of the internal combustion engine, estimating a present value of an exhaust-gas temperature based on the determined electrical resi…
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Mechanical Engineering · mapped topic
Mechanical Engineering · mapped topic
- F02D41/1454Primary
Mechanical Engineering · mapped topic
Mechanical Engineering · mapped topic
Mechanical Engineering · mapped topic
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Frequently asked questions
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- What does patent US8997726B2 cover?
- A method is provided for checking the functional capacity of a liquid-cooled exhaust manifold of an internal combustion engine, having an exhaust line connected to the exhaust manifold, in the course of which an exhaust gas sensor having an electrical heater is arranged. During the operation of the internal combustion engine, the electrical resistance of the exhaust gas sensor is determined, on…
- Who is the assignee on this patent?
- Eser Gerhard, Rodatz Paul, Continental Automotive Gmbh
- What technology area does this patent fall under?
- Primary CPC classification F02D41/1454. Mapped technology areas include Mechanical Engineering.
- When was this patent published?
- Publication date Tue Apr 07 2015 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 8 related publications on this page (citations in our corpus or others sharing the same primary CPC).