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US-2015361917-A1 · Dec 17, 2015 · US
Method for predicting a rotational speed of a crankshaft in an internal combustion engine
US9207147B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-9207147-B2 |
| Application number | US-201214369078-A |
| Country | US |
| Kind code | B2 |
| Filing date | Dec 27, 2012 |
| Priority date | Dec 30, 2011 |
| Publication date | Dec 8, 2015 |
| Grant date | Dec 8, 2015 |
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Abstract
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Method for predicting a rotational speed (n) of a drive shaft ( 16 ) in an internal combustion engine ( 13 ), wherein a past rotational speed (n) of the drive shaft ( 16 ) is determined, characterized in that in order to determine a theoretical rotational speed (nT 1 , nT 2 ) of the drive shaft ( 16 ) at a future point in time (tT 1 , tT 2 ), the change in the rotational speed (n) between two past events (P 01 , P 11 ; P 02 , P 12 ) occurring at different times is used, one rotational speed (n 01 , n 11 ; n 02 , n 12 ) and one point in time (t 01 , t 11 ; t 02 , t 12 ) being assigned to each event, wherein one point in time (t 01 , t 02 ) is an earlier point in time and the other is a later point in time (t 02 , t 12 ), which therefore lies before the predicted point in time (tT 1 , tT 2 ), wherein a gradient (m) is determined for a period between the two events (P 01 , P 11 ; P 02 , P 12 ) and is used as the basis for deducing a theoretical future rotational speed (nT 1 , nT 2 ) at the future point in time (tT 1 , tT 2 ), such that in order to determine the theoretical rotational speed (nT 1 , nT 2 ) of the drive shaft ( 16 ) at the future point in time (tT 1 , tT 2 ), the determined gradient (m) is used to determine the theoretical rotational speed (nT 1 , nT 2 ) at the future point in time (tT 1 , tT 2 ), on the basis of the later point in time (t 02 , t 12 ), thus determining whether the theoretical rotational speed (nT 1 , nT 2 ) actually occurred before the future point in time (tT 1 , tT 2 ) or not until afterwards.
First claim
Opening claim text (preview).
The invention claimed is: 1. A method for predicting a rotational speed of a driveshaft of an internal combustion engine, the method comprising: determining a past rotational speed of the driveshaft, determining a theoretical rotational speed of the driveshaft at a future point in time based on a change in the rotational speed between two past events which are temporally spaced apart, which are each assigned a rotational speed and a point in time, namely a first point in time…
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Mechanical Engineering · mapped topic
- F02N11/0855Primary
Mechanical Engineering · mapped topic
Mechanical Engineering · mapped topic
- G01M15/046Primary
Physics · mapped topic
Mechanical Engineering · mapped topic
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- What does patent US9207147B2 cover?
- Method for predicting a rotational speed (n) of a drive shaft ( 16 ) in an internal combustion engine ( 13 ), wherein a past rotational speed (n) of the drive shaft ( 16 ) is determined, characterized in that in order to determine a theoretical rotational speed (nT 1 , nT 2 ) of the drive shaft ( 16 ) at a future point in time (tT 1 , tT 2 ), the change in the rotational speed (n) between two p…
- Who is the assignee on this patent?
- Bosch Gmbh Robert
- What technology area does this patent fall under?
- Primary CPC classification F02N11/0855. Mapped technology areas include Mechanical Engineering.
- When was this patent published?
- Publication date Tue Dec 08 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).