Emissions from two methanol-powered buses
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/subX/, unburned methanol, aldehydes, total particulates, and the 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/subX/. Comparison of emission levels from methanol-and diesel-powered buses indicates that substantial reductions in emissions are possible with careful implementation of methanol fueling.
- Research Organization:
- Southwest Res. Inst., San Antonio, TX
- OSTI ID:
- 5731236
- Report Number(s):
- CONF-860263-
- Resource Relation:
- Conference: Society of Automotive Engineers international congress and exposition, Detroit, MI, USA, 24 Feb 1986
- Country of Publication:
- United States
- Language:
- English
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