Spark retard control during cylinder transitions in a displacement on demand engine
US6769403B2 · kind B2 · utility
12Cited by
13References
18Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | May 17, 2002 |
| Grant date | Aug 3, 2004 |
| Priority date | — |
| Expiry date | Jul 17, 2022 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02T10/40
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
An engine control system and method calculates spark retard during cylinder activation and deactivation for a displacement on demand engine. A torque reduction calculator calculates a torque reduction signal based on desired and measured air per cylinder. A spark retard (RTD) calculator generates a RTD signal based on the torque reduction signal.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.