System for detecting an air filter condition, in particular for combustion engine
US10126203B2 · kind B2 · utility
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14Claims
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Key dates
| Filing date | Jun 25, 2015 |
| Grant date | Nov 13, 2018 |
| Priority date | — |
| Expiry date | Sep 21, 2036 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF02M35/10373
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
Method for detecting an air filter condition, in particular for combustion engines, comprising the following steps: calculation of a linear regression over data-couples values, each comprising pressure drop value at the air filter and square of air flow value crossing the air filter, corresponding to said pressure drop value, in order to obtain an angular coefficient of the linear regression, comparison of the angular coefficient or of the function construed on the angular coefficient with at least one threshold in order to detect an operative condition of the air filter (FIG. 1).
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.