The seasonal impact of blending oxygenated organics with gasoline on motor vehicle tailpipe and evaporative emissions. Part 2

Conference · Mon Jan 01 04:00:00 EST 1990

OSTI ID:5935673

Stump, F D; Knapp, K T; Ray, W D; Burton, C; Snow, R

Evaporative and tailpipe emissions from a 1987 GM Corsica with adaptive learning closed loop control were measured with six fuels and four temperatures. Measured emissions were total (THC) and speciated hydrocarbons, aldehydes, ethanol, MTBE, benzene, 1,3,-butadiene, Co, and NO{sub x}. Tests were also performed to determine the effect of air conditioning (AC) and oxygen sensor failure. In general, AC reduced Highway Fuel Economy emissions, increased FTP emissions, and reduced fuel economy for both test cycles. Oxygen sensor malfunction increased tailpipe emissions and fuel economy. Higher levels of regulated tailpipe emissions were generally produced at the low test temperature. None of the fuels tested appeared to offer a consistent reduction in tailpipe THC and CO emissions under the conditions tested. This paper is the second in a series describing the effects of oxygenated fuels on the evaporative and tailpipe emissions from current technology light-duty gasoline powered motor vehicles. The study resulted from recent considerations by the United States Environmental Protection Agency (EPA) concerning the benefits of blending certain oxygenated compounds (alcohols and ethers) at specified levels with gasoline to be used as a vehicle fuel. This action was taken because these gasoline blends should provide the following benefits: Oxygenation can enhance fuel octane rating and thus compensate for the elimination of lead, and octane booster; the presence of oxygen in the field should reduce tailpipe emissions of total hydrocarbons and carbon monoxide; the addition of these oxygenated compounds will extend the present fuel supply and therefore could reduce oil imports; and surplus grain crops can be turned into ethanol, which can be used directly in fuel blends or reacted with isobutylene to form ethyl tertiary butyl ether.

• OSTI ID: 5935673
• Report Number(s): CONF-9010205--
• Country of Publication: United States
• Language: English

Related Subjects

02 PETROLEUM
023000 -- Petroleum-- Properties & Composition
29 ENERGY PLANNING, POLICY, AND ECONOMY
290300 -- Energy Planning & Policy-- Environment
Health
& Safety
33 ADVANCED PROPULSION SYSTEMS
330101 -- Internal Combustion Engines-- Spark-Ignition
330700* -- Advanced Propulsion Systems-- Emission Control
ADDITIVES
AIR POLLUTION
AIR POLLUTION CONTROL
AIR POLLUTION MONITORING
ALCOHOLS
ALDEHYDES
AROMATICS
BENZENE
CARBON COMPOUNDS
CARBON MONOXIDE
CARBON OXIDES
CHALCOGENIDES
CLOSED-LOOP CONTROL
CONTROL
ENERGY CONSUMPTION
ENGINES
ENVIRONMENTAL IMPACTS
ENVIRONMENTAL POLICY
ETHANOL
EXHAUST SYSTEMS
FUEL ADDITIVES
FUEL CONSUMPTION
FUELS
GASOLINE
GOVERNMENT POLICIES
HEAT ENGINES
HYDROCARBONS
HYDROXY COMPOUNDS
INTERNAL COMBUSTION ENGINES
LIQUID FUELS
MONITORING
NATIONAL ORGANIZATIONS
NITROGEN COMPOUNDS
NITROGEN OXIDES
ORGANIC COMPOUNDS
OXIDES
OXYGEN COMPOUNDS
PETROLEUM PRODUCTS
POLLUTION
POLLUTION CONTROL
SEASONAL VARIATIONS
SPARK IGNITION ENGINES
US EPA
US ORGANIZATIONS
VARIATIONS