Time resolved measurements of the exhaust from a jet ignition prechamber stratified charge engine

Conference · Sat Jan 01 04:00:00 EST 1977

OSTI ID:7293696

Ekchian, A; Heywood, J B; Rife, J M

In the jet-ignition prechamber stratified-charge spark-ignition engine, the fuel-air mixture at the time of combustion is non-uniform. Instantaneous exhaust mass flow rates and emission concentrations from this engine were measured and used to determine the degree to which this charge stratification persists in the products of combustion immediately downstream of the exhaust valve throughout the exhaust process. In all the cases studied no appreciable variations, during the exhaust process, were detected either in the air-fuel ratio of the exhaust gases as a function of time or in the instantaneous concentrations of CO/sub 2/, O/sub 2/ and NO/sub x/. The experimentally obtained instantaneous HC and CO concentrations in the exhaust, however, displayed large fluctuations and were used to study the sources of these two pollutants in this engine.

• OSTI ID: 7293696
• Report Number(s): CONF-770205-74
• Country of Publication: United States
• Language: English

Related Subjects

33 ADVANCED PROPULSION SYSTEMS
330101 -- Internal Combustion Engines-- Spark-Ignition
330701 -- Emission Control-- Nitrogen Oxides
330702* -- Emission Control-- Carbon Monoxide
330704 -- Emission Control-- Hydrocarbons
AIR POLLUTION ABATEMENT
AUTOMOBILES
CARBON COMPOUNDS
CARBON DIOXIDE
CARBON MONOXIDE
CARBON OXIDES
CHALCOGENIDES
CRYOGENIC FLUIDS
ELEMENTS
ENGINES
EXHAUST GASES
FLOW RATE
FLUID FLOW
FLUIDS
FUEL-AIR RATIO
GAS FLOW
GASEOUS WASTES
HYDROCARBONS
IGNITION SYSTEMS
INTERNAL COMBUSTION ENGINES
JETS
NITROGEN COMPOUNDS
NITROGEN OXIDES
NONMETALS
ORGANIC COMPOUNDS
OXIDES
OXYGEN
OXYGEN COMPOUNDS
POLLUTION ABATEMENT
STRATIFIED CHARGE ENGINES
VEHICLES
WASTES