COMBUSTION AND EMISSIONS CHARACTERISTICS OF METHANOL, METHANOL-WATER, AND GASOLINE-METHANOL BLENDS IN A SPARK IGNITION ENGINE
Combustion characteristics kernel development, ignition delay, combustion duration, thermal efficiency energy efficiency and exhaust emissions are studied using a CFR engine. Indolene clear is used as a base fuel fuel for all comparisons. Ten percent water-90% methanol, 15% methanol-85%, indolene, and pure methanol are studied. Base operating conditions are at 1600 RPM, 53 psi imep, with MBT spark timing. A large constant temperature fuel-air mixing chamber is used to insure mixture homogeneity and eliminate effects due to varying latent heats of vaporization. At a constant speed and load, equivalence ratio is varied to determine the practical lean limit of each fuel. Also, variation of spark advance relative to MBT, and compression ratio are investigated in the lean region where significant gains in energy efficiency and emissions quality are anticipated. Data presented is an attempt to produce an extended data base on methanol fuel so that trade-offs between consumer costs and efficiency gains can be done in ascientific-rational manner. The results for methanol and methanol-water blends showed distinct NO advantages with improved or equal energy efficiencies.
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Supplemental Notes:
- Proceedings of the 11th Intersociety Energy Conversion Engineering Conference, September 12-17, 1976.
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Corporate Authors:
Society of Automotive Engineers (SAE)
400 Commonwealth Drive
Warrendale, PA United States 15096 -
Authors:
- LoRusso, J A
- TABACZYNSKI, R J
- Conference:
- Publication Date: 1977-6
Media Info
- Features: References;
- Pagination: p. 122-132
Subject/Index Terms
- TRT Terms: Benefit cost analysis; Combustion; Compression; Databases; Energy; Exhaust gases; Fuel air mixtures; Gasoline; Lean fuel mixtures; Methanol; Spark ignition engines; Traffic equivalence factor; Volatilization; Water
- Old TRIS Terms: Compression ratio; Lean fuel engine
- Subject Areas: Energy; Geotechnology; Highways; Materials;
Filing Info
- Accession Number: 00153196
- Record Type: Publication
- Source Agency: Engineering Index
- Report/Paper Numbers: SAE 769010
- Files: TRIS
- Created Date: Jul 19 1977 12:00AM