Control apparatus for an in-cylinder injection type internal combustion engine
US5823160A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Dec 11, 1997 |
| Grant date | Oct 20, 1998 |
| Priority date | — |
| Expiry date | Dec 11, 2017 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02T10/40
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
A control apparatus for an in-cylinder injection type internal combustion engine includes an electronic control unit and an induction control system for changing the effective length of an intake passage of an induction system of the engine. The electronic control unit selects one of fuel injection modes including a compression-stroke injection mode and an intake-stroke injection mode in accordance with the engine operating state. When the engine is operated in a low engine-speed zone of a compression-stroke injection region, the electronic control unit controls the induction control system so as to make the effective length of the intake passage shorter than that for other engine operating region, to thereby attain a stable combustion, improved fuel efficiency and improved engine output in any fuel injection mode.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.