Method for correcting airflow in an internal combustion engine which is drawn in through an induction pipe and measured in the induction pipe
US6272423A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Jun 2, 1999 |
| Grant date | Aug 7, 2001 |
| Priority date | — |
| Expiry date | Jun 2, 2019 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01F1/6965
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
A method and apparatus is provided for correcting the airflow in a combustion engine drawn in through an induction pipe and measured in the induction pipe. The measured airflow is multiplied by a correction factor which is formed as a function of a value expressing the degree of the measurement error and a value expressing the direction of the measurement error. Preferably, the value expressing the degree of the measurement error is obtained by calculating the standard deviation or the variance of the measured airflow. The value expressing the direction of the measurement error is determined with at least one additional operating value of the internal combustion engine.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.