Skip fire fuel injection system and method
US8938350B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | May 31, 2012 |
| Grant date | Jan 20, 2015 |
| Priority date | — |
| Expiry date | Jul 17, 2033 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF02D41/3058
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
A system is disclosed for controlling fuel injectors in an internal combustion engine having a plurality of individual engine cylinders with associated pistons. The system includes at least one electronic engine control module configured to control the fuel injectors and having a memory with predetermined injector firing patterns stored therein. The firing patterns specify the fuel injectors to be fired and the fuel injectors to be skipped, in an engine cycle under conditions of reduced power demand. For each engine cycle in a succession of cycles under the reduced power demand condition, the engine control module determines the number of fuel injectors to be fired based upon the reduced power demand data, selects from the stored predetermined firing patterns a firing pattern specifying the injectors to be fired and the injectors to be skipped, and orders the specified fuel injectors to be fired sequentially in accordance with the selected predetermined firing pattern.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.