This research conducted exhaust tests in an HDDE (heavy-duty diesel engine) using pure diesel fuel mixed with 10 to 30% isobutanol under the condition of U.S. Transient Cycle. Characteristics of 18 carbonyls emissions were investigated and compared with those using pure diesel.
Results showed that the brake power (BP) and brake thermal efficiency (BTE) were decreased with increasing isobutanol mixtures (10 to 30%). Brake specific fuel consumption (BSFC) was increased for isubutanol ¡Ø 10%, but was decreased for isubutanol above 10%. The regulated emissions of CO, PM and NOx were decreased, but CO2 and THC were increased, due to variations of cetane number and heating value.
Total carbonyls emission concentrations with pure diesel fuel were 893.25 £gg/m3, with emission factors being 52.57 mg/bhp-hr or 218.44 mg/L-fuel. When 10 to 30% isobutanol mixture was added, total carbonyls concentrations ranged from 1108.21 to 2622.27 £gg/m3, with
emission factors being 268.83 to 610.94 mg/L-fuel, or 68.93 to 175.25
mg/bhp-hr. The ozone formation potential of diesel engine with pure
diesel fuel was 7132.72 g-O3/m3.When 10 to 30% isobutanol mixture was
used, total ozone formation potential ranged from 8764.39 to 20168.73
g-O3/m3. Total carbonyls emissions were increased with increasing
isobutanol contents.
In summary, addition 10% isobutanol was an optimal blend, since
both fuel saving and reductions of pollutant emissions can be achieved.
| Identifer | oai:union.ndltd.org:NSYSU/oai:NSYSU:etd-0629112-150243 |
| Date | 29 June 2012 |
| Creators | Yang, Hau-Siang |
| Contributors | Chia-Hsiang Lai, Yuan-Chung Lin, Kang-Shin Chen, Shui-Jen Chen |
| Publisher | NSYSU |
| Source Sets | NSYSU Electronic Thesis and Dissertation Archive |
| Language | Cholon |
| Detected Language | English |
| Type | text |
| Format | application/pdf |
| Source | http://etd.lib.nsysu.edu.tw/ETD-db/ETD-search/view_etd?URN=etd-0629112-150243 |
| Rights | user_define, Copyright information available at source archive |
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