Soot formation in a multipoint-fuel-injected spark-ignited engine

Book · Tue Jan 01 04:00:00 EST 1985

OSTI ID:5344145

Kosowski, M G

Higher levels of carbon in the oil of some multipoint-fuel-injected spark-ignited engines have been observed relative to carbureted and/or Throttle-Body-Injected (TBI) systems. These higher carbon levels could potentially shorten the oil change interval or cause engine wear. It has been theorized that carbon in the oil is caused by soot produced during the combustion process. Vehicle tests were run to show that this soot has no environmental impact. This paper discusses soot formation and how to minimize this formation by controlling injection parameters (direction, timing, method, and spray) and engine conditions (speed, load, coolant temperature, EGR rate, inlet air temperature, and spark advance). Effects on engine emissions and peak cylinder pressures are also addressed.

• OSTI ID: 5344145
• Report Number(s): TP-850294
• Country of Publication: United States
• Language: English

Related Subjects

33 ADVANCED PROPULSION SYSTEMS
330101* -- Internal Combustion Engines-- Spark-Ignition
330705 -- Emission Control-- Particulates
500200 -- Environment
Atmospheric-- Chemicals Monitoring & Transport-- (-1989)
54 ENVIRONMENTAL SCIENCES
AIR POLLUTION ABATEMENT
CARBON COMPOUNDS
COMBUSTION PRODUCTS
CONTROL
CONTROL EQUIPMENT
COOLANTS
ELECTRIC DISCHARGES
ELECTRIC SPARKS
EMISSION
ENGINES
EQUIPMENT
EXHAUST GASES
EXHAUST RECIRCULATION SYSTEMS
EXHAUST SYSTEMS
FLUIDS
FUEL INJECTION SYSTEMS
FUEL SYSTEMS
GASEOUS WASTES
GASES
HEAT ENGINES
INTERNAL COMBUSTION ENGINES
LUBRICANTS
LUBRICATING OILS
OILS
ORGANIC COMPOUNDS
OTHER ORGANIC COMPOUNDS
PERFORMANCE TESTING
PETROLEUM PRODUCTS
POLLUTION ABATEMENT
POLLUTION CONTROL EQUIPMENT
PRESSURE EFFECTS
SOOT
SPARK IGNITION ENGINES
SPEED REGULATORS
TEMPERATURE CONTROL
TESTING
VEHICLES
VELOCITY
WASTES
WEAR