Control apparatus for an internal combustion engine
US7121233B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Apr 9, 2004 |
| Grant date | Oct 17, 2006 |
| Priority date | — |
| Expiry date | Jan 28, 2025 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF02D2200/0414
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
A control apparatus for an internal combustion engine that is capable of switching between compression ignition combustion and spark ignition combustion is provided. The control apparatus is configured to perform fuel cut. The spark ignition combustion is performed over a time period after the fuel cut. The compression ignition combustion is permitted when the time period elapses. Fuel cut decreases the temperature within the combustion chamber. According to the invention, if fuel cut is performed, the temperature within the combustion chamber is raised by the spark ignition combustion. Since the compression ignition combustion is permitted after the temperature within the combustion chamber rises, engine misfire and an increase of NOx emission are prevented. The time period is preferably determined based on the temperature within the combustion chamber immediately before the fuel cut is performed.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.