VAPORISATION OF FUEL FROM PETROL ENGINES IN VEHICLES

AVDUNSTAT BRAENSLE. BENSINDRIVNA FORDON

The object was to find 1. how much hydrocarbon (HC) is formed due to evaporation from cars for the Swedish market during a standard SHED (sealed housing for evaportative determinations) test; 2. how does addition of ethanol to petrol affect rate of evaporation; 3. how is emission of pollutants in exhaust affected by adding ethanol; 4. how is mutagenicity of exhaust affected by adding ethanol to petrol. Six cars and three fuels were studied by evaporation tests and SHED tests. The fuels were a) special 95 octane leadfree petrol, b) the same with 4% ethanol added, c) 98 octane leaded commercial petrol. HC emission greatly varied between cars. The most environment-friendly cars emitted 10 times, and least friendly 35 times, more HC than the US limit value. Petrol temperature is the most important factor affecting rate of evaporation. Ethanol additive in petrol is critical, for HC emission is due to evaporation. Emission of high molecular HC is greater when the engine is hot. Addition of ethanol to petrol does not affect emission of controlled pollutants. Emission of particulate and gaseous polycyclic aromatic hydrocarbons (PAH) is lowest for leadfree petrol with ethanol, and greatest for commercial petrol. Mutagenicity in the particulate phase was greatest for leadfree petrol and lowest for commercial petrol. Mutagenicity in the gaseous phase was greatest for commercial petrol and lowest for leadfree petrol.

  • Availability:
  • Corporate Authors:

    Statens Naturvaardsverk

    Fack
    Solna,   Sweden 
  • Authors:
    • Grigoriadis, V
    • EGEBAECK, K-E
    • Egebaeck, A-L
  • Publication Date: 1987

Language

  • Swedish

Media Info

  • Pagination: 32 p.
  • Serial:
    • SNV RAPPORT
    • Issue Number: 3281
    • Publisher: Statens Naturvaardsverk
    • ISSN: 0282-7298

Subject/Index Terms

Filing Info

  • Accession Number: 00605854
  • Record Type: Publication
  • Source Agency: Transport and Road Research Laboratory (TRRL)
  • Files: ITRD, TRIS
  • Created Date: Mar 31 1991 12:00AM