Crank angle detecting apparatus for an internal combustion engine
US4607523A · kind A · utility
Assignees
Inventors
Key dates
| Filing date | Sep 17, 1985 |
| Grant date | Aug 26, 1986 |
| Priority date | — |
| Expiry date | Sep 17, 2005 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01M15/06
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
A crank angle sensor generates a reference position signal and a crank angle signal as an internal combustion engine rotates. A counter counts the crank angle signals and, when its count value has reached a first set value, it goes to a second set value. Where the count value of the counter changed from the first to the second set value before the generation of the reference position signal, a control circuit sets the counter to the second set value when the reference position signal is generated. Where the count value of the counter did not change from the first to the second set value before the generation of the reference position signal, the control circuit sets the counter to the second set value when the counter is at the first set value and the reference position signal is produced.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.