Internal combustion engine control
US5522365A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Apr 28, 1995 |
| Grant date | Jun 4, 1996 |
| Priority date | — |
| Expiry date | Apr 28, 2015 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF02D2200/0414
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
Automotive internal combustion engine air/fuel ratio control accuracy improvement is provided through correction of engine cylinder volumetric efficiency to account for variation in engine intake air temperature away from volumetric efficiency calibration intake air temperature, and to account for heating of the intake air passing through engine intake air passages prior to entry to the engine cylinders. Change in air density and change in airflow dynamics occurring in engine intake air passages are accounted for in the volumetric efficiency correction so that engine control commands more accurately account for actual engine cylinder intake air mass.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.