Method for controlling ignition timing in an internal combustion engine
US4191144A · kind A · utility
16Cited by
3References
6Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Apr 4, 1978 |
| Grant date | Mar 4, 1980 |
| Priority date | — |
| Expiry date | Apr 4, 1998 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02T10/40
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
Disclosed is a method for controlling the ignition timing in an internal combustion engine provided with an EGR device. In this method, the correct EGR ratio of the engine is obtained by means of a specific calculation using a measured absolute pressure value in an intake manifold of the engine where EGR gas is recirculated and using a calculated absolute pressure value in the intake manifold where no EGR gas is recirculated, according to the engine's operating conditions. The optimum ignition timing in the engine is controlled in accordance with the calculated EGR ratio.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.