BIOGAS AS A FUEL FOR SPARK IGNITION ENGINES
Since 1979 the New Zealand Ministry of Agriculture and Fisheries Invermay Agricultural Research Centre has been evaluating the use of green crops as a source of methane fuel for motor vehicles. In a joint project with the automotive section of the engineering department at the Otago Polytechnic, four vehicles have been converted to compressed biogas. Measurements of power output, torque and exhaust emissions with biogas having varying percentages of methane and carbon dioxide have been undertaken with comparisons made against premium grade gasoline. Four standard designs of compressed natural gas conversion kits have been investigated and modifications for biogas determined. From this work an inexpensive gas- air mixer has been designed for negative feed conversion equipment. Engine tuning for methane has been found to require greater accuracy than for gasoline, with the ignition quality, spark timing and air- fuel mixture adjustments being more critical. The paper is No. 83020. (TRRL)
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Supplemental Notes:
- This paper was presented at the Second National Conference on Fuels from Crops, Melbourne, August 1983.
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Corporate Authors:
Society of Automotive Engineers
191 Royal Parade
Parkville, Victoria 3052, Australia -
Authors:
- McLeod, R J
- Conference:
- Publication Date: 1983-8
Media Info
- Features: Figures; References; Tables;
- Pagination: p. 20.1-16
Subject/Index Terms
- TRT Terms: Agriculture; Air; Alternatives analysis; Biomass; Carbon dioxide; Conferences; Fuel air mixtures; Fuels; Gases; Ignition; Methane; Mixtures; Motors; Spark ignition engines; Synthetic fuels
- Uncontrolled Terms: Air fuel ratio
- ITRD Terms: 347: Agriculture; 6714: Air; 9000: Alternative; 8525: Conference; 3850: Fuel; 6734: Gas; 1327: Ignition; 9047: Mixture; 1334: Motor
- Subject Areas: Energy; Highways; Vehicles and Equipment; I96: Vehicle Operating Costs;
Filing Info
- Accession Number: 00382028
- Record Type: Publication
- Source Agency: ARRB
- Files: ITRD, TRIS, ATRI
- Created Date: Apr 30 1984 12:00AM