Transient control between two spark-ignited combustion states in engine
US5992372A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | May 21, 1998 |
| Grant date | Nov 30, 1999 |
| Priority date | — |
| Expiry date | May 21, 2018 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02T10/40
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
What is disclosed is a vehicle engine control system responsive to a change between a first request for homogeneous charge combustion and a second request for stratified charge combustion. A spark-ignition cylinder-injection internal combustion engine has cylinders, each performing an intake phase, a compression phase, a power phase, and an exhaust phase. The cylinders each, when rendered operable in a first mode, experience first fuel injection at a first fuel injection timing during intake phase thereof and first spark ignition at a first ignition timing to initiate homogeneous charge combustion. The cylinders each, when rendered operable in a second mode, experiences second fuel injection at a second fuel injection timing during compression phase and second spark ignition at a second ignition timing to initiate stratified charge combustion. A fuel injection manager is operable to set one of the first fuel injection and second fuel injection for the cylinders in a predetermined sequential order in response to one of the first and second request. A spark ignition manager is operable to set one of the first spark ignition and second spark ignition for the cylinders in the predeterm…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.