Emissions characterization of two methanol-fueled transit buses. Final report, April-September 1985

Technical Report · Sat Feb 01 04:00:00 EST 1986

OSTI ID:5821611

Ullman, T L; Hare, C T

Exhaust emissions from the two methanol-powered buses used in the California Methanol Bus Demonstration have been characterized. The M.A.N. SU 240 bus is powered by M.A.N.'s D2566 FMUH methanol engine, and utilizes catalytic exhaust aftertreatment. The GMC RTS II 04 bus is powered by a first-generation DDAD 6V-92TA methanol engine without exhaust aftertreatment. Emissions of HC, CO, NO, unburned methanol, aldehydes, total particulates, and soluble fraction of particulate were determined for both buses over steady-state and transient chassis dynamometer test cycles. Emission levels from the M.A.N. bus were considerably lower than those from the GMC bus, with the exception of NO. Comparison of emission levels from methanol- and diesel-powered buses indicates that substantial reduction in emissions (especially particulate and NO) are possible with careful implementation of methanol fueling.

• Research Organization: Southwest Research Inst., San Antonio, TX (USA)
• OSTI ID: 5821611
• Report Number(s): PB-86-172046/XAB
• Country of Publication: United States
• Language: English

Related Subjects

33 ADVANCED PROPULSION SYSTEMS
330700* -- Advanced Propulsion Systems-- Emission Control
AIR POLLUTION
ALCOHOL FUELS
ALCOHOLS
BUSES
EXHAUST GASES
FIELD TESTS
FLUIDS
FUELS
GASEOUS WASTES
GASES
HYDROXY COMPOUNDS
MASS TRANSIT SYSTEMS
METHANOL
METHANOL FUELS
ORGANIC COMPOUNDS
POLLUTANTS
POLLUTION
SYNTHETIC FUELS
TESTING
TRANSPORTATION SYSTEMS
VEHICLES
WASTES