Reduced torque variation for engines with active fuel management
US9284894B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jun 7, 2013 |
| Grant date | Mar 15, 2016 |
| Priority date | — |
| Expiry date | May 6, 2034 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF02B75/06
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
In one exemplary embodiment, a method for active fuel management in an engine having a plurality of cylinders is provided, the method including stopping a fuel flow into a first set of the plurality of cylinders, the stopping causing a deactivation of the first set of cylinders and continuing injection of fuel into a second set of the plurality of cylinders to provide power while the first set of cylinders are deactivated. The method also includes injecting gas into the first set of the plurality of cylinders when each of the first set of cylinders are at bottom dead center, the injected gas increasing a cylinder pressure in each of the first set of cylinders that reduces an amplitude of first order torque variations during operation of the engine while the first set of cylinders are deactivated.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.