EXPERIMENTAL STUDY OF A LOW-PRESSURE DIRECT-INJECTION STRATIFIED-CHARGE ENGINE
The lean-burn system is a means of bettering the thermal efficiency of gasoline engines. The extension of lean misfire limit by means of charge stratification can be considered as a potent method to materialize the lean-burn. Two types of low-pressure fuel delivery systems were fabricated in the study and included in the report in order to investigate whether they could stratify the air-fuel mixture using in-cylinder visualization coupled with a transparent cylinder engine. The combination of in-cylinder swirl and low-pressure direct injection enabled in-cylinder axial stratification, and consequently, the lean misfire limit was significanttly extended up to 40:1 of air/fuel ratio or more. Some of the problems to be resolved, including the increased emission of hydrocarbons, were also indicated.
- Included in Mazda Technical Review, n9 p112-120 1991.
Mazda, IncorporatedMerchandize Development Center
Hiroshima, Japan 000
- MISUMI, M
- Publication Date: 1991
- Pagination: 11 p.
- TRT Terms: Air quality management; Fuel air mixtures; Fuel injection; Lean fuel mixtures; Pressure; Stratified charge engines; Thermal efficiency
- Uncontrolled Terms: Air fuel ratio
- Old TRIS Terms: Direct injection engines; Lean fuel engine; Low pressures
- Subject Areas: Highways; Vehicles and Equipment;
- Accession Number: 00628212
- Record Type: Publication
- Files: TRIS
- Created Date: Dec 3 1993 12:00AM