The effects of oxygen-enriched intake air on FFV exhaust emissions using M85
- Argonne National Lab., IL (United States)
- Autoresearch Labs., Inc., Chicago, IL (United States)
- National Renewable Energy Lab., Golden, CO (United States)
This paper presents results of emission tests of a flexible fuel vehicle (FFV) powered by an SI engine, fueled by M85 (methanol), and supplied with oxygen-enriched intake air containing 21, 23, and 25 vol% O2. Engine-out total hydrocarbons (THCs) and unburned methanol were considerably reduced in the entire FTP cycle when the O2 content of the intake air was either 23 or 25%. However, CO emissions did not vary much, and NOx emissions were higher. HCHO emissions were reduced by 53% in bag 1, 84% in bag 2, and 59% in bag 3 of the FTP cycle with 25% oxygen-enriched intake air. During cold-phase FTP,reductions of 42% in THCs, 40% in unburned methanol, 60% in nonmethane hydrocarbons, and 45% in nonmethane organic gases (NMOGs) were observed with 25% enriched air; NO{sub x} emissions increased by 78%. Converter-out emissions were also reduced with enriched air but to a lesser degree. FFVs operating on M85 that use 25% enriched air during only the initial 127 s of cold-phase FTP or that use 23 or 25% enriched air during only cold-phase FTP can meet the reactivity-adjusted NMOG, CO, NO{sub x}, and HCHO emission standards of the transitional low-emission vehicle.
- Research Organization:
- Argonne National Lab. (ANL), Argonne, IL (United States)
- Sponsoring Organization:
- USDOE, Washington, DC (United States)
- DOE Contract Number:
- W-31109-ENG-38
- OSTI ID:
- 221904
- Report Number(s):
- ANL/ES/CP-89858; CONF-960518-1; ON: DE96009419
- Resource Relation:
- Conference: Society of Automobile Engineers (SAE) international Spring fuels and lubricants meeting, Dearborn, MI (United States), 6-9 May 1996; Other Information: PBD: [1996]
- Country of Publication:
- United States
- Language:
- English
Similar Records
Utilizing intake-air oxygen-enrichment technology to reduce cold-phase emissions
Utilizing intake-air oxygen-enrichment technology to reduce cold- phase emissions