Method for starting an internal combustion engine
US7257480B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Oct 12, 2005 |
| Grant date | Aug 14, 2007 |
| Priority date | — |
| Expiry date | Oct 12, 2025 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF02D2400/08
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
In a method for starting an internal combustion engine having a sensor disk which is coupled to a crankshaft of the engine, the sensor disk having a marking via an alternating arrangement of teeth and tooth spaces, and a first sensor and a second sensor each capable of generating an electric signal which may assume at least two signal levels, being associated with the sensor disk, one of the signal levels being associated with a tooth and the other signal level with a tooth space, a rising or falling signal edge of the one signal and the signal level of the other signal being used for determining the direction of rotation and increment of the angle of rotation of the crankshaft, the starting characteristics are improved in that the absolute crankshaft angle position is saved in a non-volatile memory when the engine is shut off.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.