STUDY OF METHANOL FUELED VEHICLE WITH AN OTTO-TYPE ENGINE

Methanol fuel utilization for van-type vehicles with Otto-type engines has been studied. A water-cooled, in-line four, 2 liter engine equipped with the multi-point fuel injection system was operated with near neat methanol fuel (M85). Spark plugs without platinum tipped electrodes and the 10.2 compression ratio were adopted to prevent preignition damaging the engine. Exhaust emission levels from a methanol fueled vehicle were almost equal to those of a gasoline vehicle under the 10-mode driving cycle, but HC and CO emissions under the 11-mode driving cycle were larger than those from a gasoline vehicle due to enriched mixture calibration during warm up condition. With regard to the durability, there still remains many problems to be resolved, for example, engine wear, oil dilution under short distance traveling conditions, the injector and the fuel pump malfunctions. Moreover, the formaldehyde emissions increased with mileage.

• Supplemental Notes:
  • Included in Toyota Engineering, v39 n1 pp43-51 1989.
• Corporate Authors:

  Toyota Motor Corporation

  1 Toyota-cho, Toyota City
  Aichi-ken,   Japan  471-8571
• Authors:
  • Tsukasaki, Y
  • Nohira, H
  • Ito, S
  • Inoue, T
• Publication Date: 1989

Language

• Japanese

Media Info

• Pagination: 9 p.

Subject/Index Terms

• TRT Terms: Compression; Cooling water; Engine operation; Exhaust gases; Formaldehyde; Fuel injection; Fuel pumps; Gasoline engines; Methanol; Otto cycle engines; Spark plugs; Vans; Wear
• Uncontrolled Terms: Mileage
• Old TRIS Terms: Compression ratio; Engine warmup; Water cooling
• Subject Areas: Highways; Vehicles and Equipment; I90: Vehicles;

Filing Info

• Accession Number: 00496969
• Record Type: Publication
• Source Agency: National Technical Information Service
• Files: TRIS
• Created Date: Sep 30 1990 12:00AM