System and method of cylinder deactivation for optimal engine torque-speed map operation
US8886422B2 · kind B2 · utility
Assignees
Inventors
Key dates
| Filing date | Feb 28, 2012 |
| Grant date | Nov 11, 2014 |
| Priority date | — |
| Expiry date | Jun 3, 2032 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG07C5/08
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
This disclosure provides a system and method for determining cylinder deactivation in a vehicle engine to optimize fuel consumption while providing the desired or demanded power. In one aspect, data indicative of terrain variation is utilized in determining a vehicle target operating state. An optimal active cylinder distribution and corresponding fueling is determined from a recommendation from a supervisory agent monitoring the operating state of the vehicle of a subset of the total number of cylinders, and a determination as to which number of cylinders provides the optimal fuel consumption. Once the optimal cylinder number is determined, a transmission gear shift recommendation is provided in view of the determined active cylinder distribution and target operating state.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.