Technical documentation
Tracer Fuel Injection Studies on Exhaust Port Hydrocarbon Oxidation: Part II
19 Jun 2000
Abstract
Recently, studies were conducted on a single cylinder, four stroke engine to investigate the effect of temperature and local mixedness on exhaust port hydrocarbon oxidation. To examine the effect of temperature, hydrocarbon tracers (propane, propene, 1-butene, n-butane, and n-pentane) were individually injected into the exhaust port just behind the exhaust valve for operating conditions that provided different exhaust port temperatures. For the local mixedness experiments, tracer mixtures (propane + n-butane, 1-butene + n-butane, propene + n-butane) were injected into the exhaust port just behind either a normal exhaust valve or a shrouded exhaust valve. The concentration of tracers and their reaction products were measured using gas chromatography of samples withdrawn from the exhaust stream. The tracer consumption behavior with changing port temperature confirmed that there is a minimum port temperature for hydrocarbon oxidation. This “cutoff temperature” range is from 1300 - 1500 K depending on the hydrocarbon species, as suggested by previous experimental and modeling studies. The comparison between the tracer concentrations using normal and shrouded exhaust valves shows that increased local mixing significantly increased tracer consumption even for the times and temperatures available in the exhaust port.
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10 citations in Scopus
Details
- Title
- Tracer Fuel Injection Studies on Exhaust Port Hydrocarbon Oxidation: Part II
- Creators
- Weiying Yang - Drexel UniversityJincai Zheng - Drexel UniversityDavid L Miller - Drexel UniversityNicholas P Cernansky - Drexel University
- Conference
- CEC/SAE Spring Fuels & Lubricants Meeting & Exposition
- Series
- SAE Technical Paper Series
- Resource Type
- Technical documentation
- Language
- English
- Academic Unit
- [Retired Faculty]; Mechanical Engineering and Mechanics
- Scopus ID
- 2-s2.0-85072474258
- Other Identifier
- 991019174597904721