Field-interrupting contactless ignition system for internal combustion engine
US4597366A · kind A · utility
Inventor
Key dates
| Filing date | Jul 24, 1985 |
| Grant date | Jul 1, 1986 |
| Priority date | — |
| Expiry date | Jul 24, 2005 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF02P7/035
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
An apparatus for distributing a high voltage arc from the high voltage ignition coil of a piston type internal combustion engine to the respective spark plug terminals by means of a high resistance, field-interrupting dielectric device which has an aperture therethrough defining a conductive path through the non-conductive dielectric device. The device is rotated in a fixed gap between the fixed location high voltage ignition coil electrode and the opposing spark plug terminal electrodes in such a manner so as to cause the aperture therethrough to pass directly between the electrodes which in turn allows a high voltage arc to bridge the fixed gap between the electrodes thus causing the spark plugs to be fired. When the aperture is not present in the fixed gap between the electrodes, the high resistance dielectric material of the device interrupts the electrical field between the electrodes, thus preventing an arc from bridging the gap and the spark plugs from being fired. The rotation of the device in the gap is synchronized to the rotation of the engine camshaft by means of a step motor, motor controller, sensors, and electronic circuitry, to insure that the aperture is present an…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.