Motorcycle emissions, their impact, and possible control techniques

Conference · Mon Dec 31 23:00:00 EST 1973

OSTI ID:7360586

Hare, C T; Springer, K J; Oliver, W R; Houtman, W H; Huls, T A

Seven motorcycles, ranging in size from 100 to 1200 cu cm were tested for emissions characterization purposes using the federal seven-mode test procedure for 1971 and older light-duty vehicles, the federal LA-4 test for 1972 and later light-duty vehicles and various steady-state conditions. Emission factors and national impact were also calculated. Expressing motorcycle emissions as percentages of the revised 1970 national totals from all sources, motorcycles were estimated to account for about 0.6% of hydrocarbons, 0.5% of the carbon monoxide, 0.01% of the nitrogen oxides, 0.002% of the sulfur oxides, and 0.01% of the particulates. As percentages of revised 1970 national totals from mobile sources only, motorcycles were estimated to be responsible for 1.0% of the hydrocarbons, 0.9% of CO, 0.03% of NO/sub x/, 0.05% of SO/sub x/, and 0.3% of particulates. An examination of the tentative standards for the 1976 model year showed that the most significant reductions must occur in hydrocarbons from 2-stroke bikes and CO from larger machines (both 2-stroke and 4-stroke).

• OSTI ID: 7360586
• Country of Publication: United States
• Language: English

Related Subjects

33 ADVANCED PROPULSION SYSTEMS
330700* -- Advanced Propulsion Systems-- Emission Control
500100 -- Environment
Atmospheric-- Basic Studies-- (-1989)
54 ENVIRONMENTAL SCIENCES
AIR POLLUTION
CARBON COMPOUNDS
CARBON MONOXIDE
CARBON OXIDES
CHALCOGENIDES
ENGINES
EXHAUST GASES
FEDERAL TEST PROCEDURE
GASEOUS WASTES
HYDROCARBONS
INTERNAL COMBUSTION ENGINES
NITROGEN COMPOUNDS
NITROGEN OXIDES
ORGANIC COMPOUNDS
OXIDES
OXYGEN COMPOUNDS
PARTICLES
PERFORMANCE TESTING
POLLUTION
SPARK IGNITION ENGINES
STEADY-STATE CONDITIONS
SULFUR COMPOUNDS
SULFUR OXIDES
TESTING
VEHICLES
WASTES