Direct fuel injection spark ignition internal combustion engine
US7134421B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jul 26, 2005 |
| Grant date | Nov 14, 2006 |
| Priority date | — |
| Expiry date | Jul 26, 2025 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02T10/40
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
When, with a piston assuming the top dead center (TDC) on the compression stroke, a fuel is injected from a nozzle of a fuel injection valve, the injected fuel from the nozzle is guided to reach electrodes of a spark plug by a concave surface defined by a crown portion of a piston. A control unit is provided that controls the fuel injection valve and the spark plug. The control unit is configured to carry out under a given condition controlling the fuel injection valve to start the fuel injection at a time before the top dead center (TDC) on the compression stroke and finish the fuel injection at a time after the top dead center (TDC) on the compression stroke; and controlling the spark plug to carry out the ignition at a time after the top dead center (TDC).
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.