Ignition control apparatus and method for a multi-cylinder two cycle engine
US5494017A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | May 19, 1994 |
| Grant date | Feb 27, 1996 |
| Priority date | — |
| Expiry date | May 19, 2014 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF02B2075/025
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
A reference angle signal which provides a reference for ignition control of each cylinder is output together with a cylinder discrimination signal for matching the reference angle signal with the respective cylinder, and ignition control carried out for separate cylinders on the basis of the cylinder discrimination results from the cylinder discrimination signal. When there is an abnormality in the cylinder discrimination signal and cylinder judgment becomes nonfunctional, the reference angle signal is matched with the respective cylinder in the ignition order under the normal conditions up until the occurrence of the abnormality, and ignition is carried out normally in the separate cylinders. As a result, even if cylinder discrimination by the cylinder discrimination signal becomes nonfunctional, ignition for separate cylinders can be continued, so that the engine can keep running.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.