Method for enabling multiple-displacement engine transition to different displacement
US7044107B1 · kind B1 · utility
4Cited by
12References
9Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Mar 23, 2005 |
| Grant date | May 16, 2006 |
| Priority date | — |
| Expiry date | Mar 23, 2025 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02T10/12
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
A method for enabling a transition of a multiple-displacement engine to a different engine operating displacement includes determining a temperature measure correlated with an instantaneous engine oil temperature at an engine start-up, for example, a detected engine coolant temperature at engine start-up; determining a start-up delay period based on the temperature measure, as with a lookup table of calibratable values; and enabling a displacement mode transition no earlier than when the engine run time since start-up exceeds the start-up delay period.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.