On-road testing of rapeseed biodiesel
- Univ. of Idaho, Moscow, ID (United States)
Two on-road diesel pickups were operated on a mixture of 20 percent Biodiesel and 80 percent for 80,500 km (50,000 miles). One pickup, powered by a 5.9 liter direct injected, turbocharged, and intercooled engine was operated on 20 percent RME and 80 percent diesel. The other pickup, powered by a 7.3 liter, naturally aspirated, precombustion chamber engine, was operated on 20 percent raw rapeseed oil and 80 percent diesel. The engines were unmodified, but modifications were made to the vehicles for the convenience of the test. In order to give maximum vehicle range, fuel mixing was done on-board to extend the driving range to over 4,800 (3,000 miles) between Biodiesel fill ups. Two tanks were added, one for a mixing chamber and one for the Biodiesel fuel tank in the bed of the pickup. Electric fuel pumps supply fuel to the combining chamber for correct proportioning. The Biodiesel fuel tanks were heated through a heat exchanger in the fuel tank with the use of engine coolant. Chassis dynamometer testing, injector coking, engine compression, injector valve opening pressures, and engine oil analyses were performed at a regularly scheduled intervals to monitor the engine performance parameters. RME produced 5 percent less power than D2, 20RME produced 1 percent less than D2. Opacity was reduced 26 percent with RME, 20RME reduced opacity 10 percent, and 20RAW decreased opacity by 11 percent with the snap idle test compared to D2. Emissions tests with a chassis transient dynamometer at the Los Angeles Metropolitan Authority Emissions Test Facility resulted in a decrease in HC (20 percent), CO (25 percent), NOx (2.6 percent), PM (10.9 percent), and there was no difference in CO{sub 2} with 20RME compared to D2.
- Research Organization:
- National Renewable Energy Lab. (NREL), Golden, CO (United States)
- OSTI ID:
- 115318
- Report Number(s):
- NREL/CP-200-8098; CONF-9508104-; ON: DE95009230; TRN: 95:006736-0099
- Resource Relation:
- Conference: 2. meeting on biomass of the Americas, Portland, OR (United States), 21-24 Aug 1995; Other Information: PBD: [1995]; Related Information: Is Part Of Second biomass conference of the Americas: Energy, environment, agriculture, and industry. Proceedings; PB: 1741 p.
- Country of Publication:
- United States
- Language:
- English
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