Method for controlling of valve timing of continuous variable valve duration engine
US9964050B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Sep 7, 2016 |
| Grant date | May 8, 2018 |
| Priority date | — |
| Expiry date | Sep 7, 2036 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02T10/12
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
A method for controlling valve timing is provided for a turbo engine provided with a continuous variable valve duration (CVVD) device, a two stage variable valve duration device (VVD) and a continuous variable valve timing (CVVT) device. The method includes: classifying control regions; retarding an intake valve closing (IVC) timing and controlling an exhaust valve to limit a valve overlap in a first region; applying a maximum duration to an intake valve and applying a long duration to the exhaust valve in a second region; applying the long duration to the exhaust valve and advancing the IVC timing in a third region; controlling a throttle valve to be fully opened, applying a short duration to the exhaust valve and retarding an exhaust valve opening (EVO) timing in a fourth region; and controlling the throttle valve to be fully, applying the long duration to the exhaust valve and retarding the IVC timing in a fifth region.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.