System and method for controlling airflow through cylinders of an engine during a deceleration fuel cutoff event
US11156179B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Sep 30, 2020 |
| Grant date | Oct 26, 2021 |
| Priority date | — |
| Expiry date | Sep 30, 2040 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02T10/40
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
A system includes a fuel control module and a valve control module. The fuel control module controls a fuel injector to stop fuel delivery to each cylinder of an engine in a vehicle when the vehicle is decelerating. The valve control module controls a valve actuator to actuate intake and exhaust valves of each cylinder of the engine between open and closed positions when fuel delivery to each cylinder of the engine is stopped. The valve control module controls the valve actuator to adjust an amount of airflow through each cylinder of the engine to a minimum amount when fuel delivery to each cylinder of the engine is initially stopped. The valve control module controls the valve actuator to adjust the amount of airflow through each cylinder of the engine to an amount greater than the minimum amount before fuel delivery to each cylinder of the engine is restarted.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.