System and method for increasing operating efficiency of a powertrain by controlling an aero shutter
US8443921B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Nov 9, 2010 |
| Grant date | May 21, 2013 |
| Priority date | — |
| Expiry date | Aug 22, 2031 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF01P7/08
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
A method of increasing operating efficiency of a powertrain includes unrestricting a grille opening by fully opening a shutter at or below a first predetermined vehicle speed, and turning a fan off. The method also includes unrestricting the grille opening by fully opening the shutter above the first predetermined vehicle speed and at or below a second predetermined vehicle speed under a high powertrain cooling load, and turning the fan on. The method additionally includes partially restricting the grille opening above the second predetermined vehicle speed via an intermediate position of the shutter, and turning the fan off. A specific size of the fan together with the selected positions for the shutter at the respective vehicle speeds provides sufficient airflow through the grille opening to cool the powertrain, and provides increased powertrain operating efficiency. A system for increasing operating efficiency of a powertrain and a vehicle are also provided.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.