Method and apparatus for inferring the actual air charge in an internal combustion engine during transient conditions
US5331936A · kind A · utility
32Cited by
9References
21Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Feb 10, 1993 |
| Grant date | Jul 26, 1994 |
| Priority date | — |
| Expiry date | Feb 10, 2013 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF02D41/18
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
A mass airflow based control system for an internal combustion engine is provided which is capable of inferring cylinder air charge during non-steady state periods of operation of the engine. The control system infers cylinder air charge from values of rotational engine speed, air mass flow inducted into the engine, inlet air temperature, engine coolant temperature, and barometric pressure. The control system employs the inferred cylinder air charge value for air/fuel ratio control.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.