INJECTION OF METHANOL AT LOW PRESSURE IN D.I. DUAL-FUEL ENGINES

This paper describes an experimental investigation of direct injection of Methanol at low pressures in a dual fuel engine. The main purpose of the investigation was to find the maximum possible substitution of diesel oil by methanol, the engine efficiencies and emissions. The timing and rate of injection of the diesel oil and of the methanol were varied systematically. Strategies for load control of the dual fuel engine and effects of increased intake pressure and temperature were also investigated. Methanol was injected into the combustion chamber of a single cylinder experimental D.I. engine through an electronically governed nozzle at pressures ranging from 5 to 8 bars. Referring to lower calorific values, 77 percent of the diesel oil could be substituted by methanol at 20 deg C in-take air temperature. At 53 deg C intake air temperature, maximum substitution was as high as 85 percent. Shaft power was increased by 36 percent, when changing the engine from conventional diesel to the dual-fuel concept. Engine efficiency was improved by 14 percent (from 0.29 to 0.33) at full load.

• Supplemental Notes:
  • Twentieth FISITA Congress, (SAE P-143), The Automotive Future, Volume 4, Austria, 6-11 May 1984.
• Corporate Authors:

  Society of Automotive Engineers (SAE)

  400 Commonwealth Drive
  Warrendale, PA  United States  15096
• Authors:
  • Frederiksen, P
  • Nielsen, O B
  • Pedersen, P S
• Publication Date: 1984-5

Media Info

• Features: Figures; References;
• Pagination: p. 4.139
• Serial:
  • Publication of: Society of Automotive Engineers, Incorporated
  • Publisher: Society of Automotive Engineers (SAE)

Subject/Index Terms

• TRT Terms: Compression ignition engines; Diesel engines; Diesel fuels; Fuel injection; Methanol; Pressure; Temperature
• Old TRIS Terms: Direct injection engines; Dual fueling
• Subject Areas: Safety and Human Factors;

Filing Info

• Accession Number: 00392581
• Record Type: Publication
• Source Agency: National Highway Traffic Safety Administration
• Report/Paper Numbers: SAE 845126, HS-037 478
• Files: HSL, USDOT
• Created Date: Feb 28 1985 12:00AM