Ignition device of an i.c. engine
US4570595A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Apr 5, 1984 |
| Grant date | Feb 18, 1986 |
| Priority date | — |
| Expiry date | Apr 5, 2004 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02T10/40
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
A microcomputer is used in the invention for the control of the ignition function of an ignition system of an i.c. engine. The limitation of r.p.m. of the engine at high r.p.m. is brought about by an acurately developed procedure of delayed ignition in two steps. The control of ignition timing is carried out by counting timer pulses between reference points, whereby the number of pulses between such points constitutes an address of a position in the ROM of the computer, where a reference number of the ignition time is stored. In manufacturing of a great assortment of engines several demands for limitation of maximum r.p.m. can be fulfilled in that the microcomputer has a spacing for storing several characteristics. The selection of a particular characteristic for a sort of engine is made by establishing permanent connections (or disconnections) in separate inputs of the computer which reads the combination and choses the corresponding characteristic.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.