Non-contact ignition system
US4452199A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Oct 11, 1983 |
| Grant date | Jun 5, 1984 |
| Priority date | — |
| Expiry date | Oct 11, 2003 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF02P9/005
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
An ignition circuit according to the present invention has the properties of trigging, i.e. releasing the spark at a predetermined point behind the top of the primary voltage (the ignition generator voltage). During the ascending primary voltage the ignition switch (12) is conducting while a capacitor voltage (U.sub.K) is developed. When the primary voltage has passed its top value a potential difference to the capacitor voltage (U.sub.K) is created, which is used for the control of the switch to make it break. By the interruption of the primary current an ignition voltage is induced at duty r.p.m. in an ignition coil (11). At an extremely high r.p.m. the ignition is delayed behind the voltage top whereby the induced voltage will be too low for ignition. Too high an r.p.m. is thereby avoided.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.