Digital advance control device for internal combustion engines
US4262334A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Feb 22, 1978 |
| Grant date | Apr 14, 1981 |
| Priority date | — |
| Expiry date | Feb 22, 1998 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02T10/40
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
A digital advance control system of the type including a digital computer which receives input data of various engine operating parameters including the number of pulses corresponding to the ignition angle from a tachometer device in which the data from the tachometer device is to be interpolated. The data to be interpolated is applied to an attenuator circuit which includes a subtracter which receives the higher order bits of the data and a reversible counter whose higher order bits are also applied to the subtracter. The output of the subtracter is applied to a preselection counter or a binary rate multiplier which controls the application of clock pulses to the reversible counter.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.