Control for spark ignited internal combustion engine
US4716874A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Sep 27, 1985 |
| Grant date | Jan 5, 1988 |
| Priority date | — |
| Expiry date | Sep 27, 2005 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02T10/40
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
An improved control to establish ignition timing in a spark ignited internal combustion engine near optimum efficiency without knock and/or anomalous combustion. The control operates in response to a detected ion and charged particle current in the engine exhaust and to timing pulses from the engine. When the engine is operating under steady state conditions and retarded from the point of incipient knock and/or anomalous combustion, there is very little time change in the averaged exhaust current data. When incipient knock or anomalous combustion is approached, scatter in the averaged exhaust current data significantly increases. The detected scatter in the averaged exhaust current data is used to optimize engine operation for each combustion chamber.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.