Electronically assisted engine starting means
US4858585A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Dec 11, 1987 |
| Grant date | Aug 22, 1989 |
| Priority date | — |
| Expiry date | Dec 11, 2007 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02T10/40
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
An improved engine ignition system for a marine engine or the like, which provides reliable start-up capability and running protection. The system detects the actual rotational speed of the engine and provides an electrical signal that is proportional to the measured speed, and selectively advances the ignition timing characteristic, and also controls overall engine speed to prevent engine damage that may be caused by an overspeed condition. The system advances the ignition timing characteristic during warm-up until a predetermined temperature is achieved, and also advances the ignition timing characteristic for a predetermined time period during initial running. The system utilizes the power of the battery during start-up to supplement the power that is generated by the stator coil which normally supplies all of the necessary power for the control circuitry of the ignition system.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.