Electronic ignition system
US4392474A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Apr 15, 1981 |
| Grant date | Jul 12, 1983 |
| Priority date | — |
| Expiry date | Apr 15, 2001 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF02P3/051
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
An electronic ignition system comprising an ignition coil, having the spark gap in circuit with its secondary winding, a primary transistor and a current limiting circuit in circuit with its secondary winding, a filter transistor connected in front of said primary transistor and controlled by a control signal and a resistor network connected in the current path of the filter transistor, the filter transistor and the resistor network being so dimensioned that, during a rise in current in the primary winding, the further transistor is in saturated operation and a jump in the voltage across the resistor network to a constant maximum voltage when the current is limited by the current limiting circuit, a pulse being derivable from the voltage curve at the resistor network.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.