Controller and control method for internal combustion engine
US9938921B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Feb 14, 2017 |
| Grant date | Apr 10, 2018 |
| Priority date | — |
| Expiry date | Feb 14, 2037 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02T10/40
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
There is provided a controller and a control method for an internal combustion engine capable of correcting a detection error of a crankshaft angle with high accuracy. The controller of the internal combustion engine is provided with an angle information detection unit that detects an angle interval and a time interval with a specific crank angle sensor, an angle information correction unit that corrects the angle interval or the time interval by the correction value, an angle information calculation unit that calculates a first crank angle acceleration based on the corrected values of first interval number and calculates a second crank angle acceleration based on the corrected values of second interval number which is larger number than the first interval number, and a correction value change unit that changes the correction value so that the first crank angle acceleration approaches the second crank angle acceleration.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.