Control method and system of engine
US8417437B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | May 5, 2010 |
| Grant date | Apr 9, 2013 |
| Priority date | — |
| Expiry date | Jul 2, 2031 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02T10/40
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
When it is determined that an engine operating condition is in a high-engine load HCCI range (A2) where an engine load is higher than a specified load X1 within a HCCI range A where a compression self combustion is performed, an after-TDC injection F2s is executed at a point T1 when an internal pressure of a combustion chamber drops below a specified pressure Y after the top dead center of an exhaust stroke during a minus valve overlap period NVO during which intake and exhaust valves are both closed. Then, a main injection F2m as a main injection is executed. Accordingly, any improper detonation or deterioration of NOx emission which may be caused by the compression self-ignition combustion in the range where the engine load is relatively high can be prevented.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.