EGR controller for internal combustion engine
US8960169B2 · kind B2 · utility
1Cited by
0References
10Claims
0Family size
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Key dates
| Filing date | Jun 22, 2012 |
| Grant date | Feb 24, 2015 |
| Priority date | — |
| Expiry date | Sep 7, 2033 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02T10/40
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
When a constant driving voltage is applied to a motor driving an EGR valve so that the EGR opening degree is varied, an angular speed of the EGR valve becomes minimal at a position where the driving torque of the EGR valve becomes maximal. In view of this, while an opening degree of the EGR valve is varied with a constant driving voltage applied to the motor, the EGR opening degree where the angular speed becomes minimal is learned as a full-close position.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.