Sensor based measurement and purge control of fuel vapors in internal combustion engines
US9631567B2 · kind B2 · utility
2Cited by
73References
20Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Aug 15, 2013 |
| Grant date | Apr 25, 2017 |
| Priority date | — |
| Expiry date | Feb 25, 2036 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF02D2250/08
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
A fuel control system for a vehicle includes a pressure compensation module that compensates an intake oxygen signal based on an intake pressure signal and that generates a compensated intake oxygen signal. A blow-by estimation module generates an estimated blow-by flow. A purge flow estimation module estimates the purge flow based on the compensated intake oxygen signal and the estimated blow-by flow. A fuel control estimation module reduces fueling to injectors of an engine of the vehicle based on the purge flow.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.