DC Field | Value | Language |
---|---|---|
dc.contributor.author | Lee, Tongwon | ko |
dc.contributor.author | Bae, Choongsik | ko |
dc.contributor.author | Bohac, Stani V. | ko |
dc.contributor.author | Assanis, Dennis N. | ko |
dc.date.accessioned | 2011-03-07T08:06:53Z | - |
dc.date.available | 2011-03-07T08:06:53Z | - |
dc.date.created | 2012-02-06 | - |
dc.date.created | 2012-02-06 | - |
dc.date.issued | 2003-01 | - |
dc.identifier.citation | SAE INTERNATIONAL JOURNAL OF FUELS AND LUBRICANTS, v.111, no.4, pp.592 - 600 | - |
dc.identifier.issn | 1946-3952 | - |
dc.identifier.uri | http://hdl.handle.net/10203/22471 | - |
dc.description.abstract | Wall wetting of injected fuel onto the intake manifold and cylinder wall causes unpredictable transient behavior of air-fuel mixing which results in a significant emission of unburned hydrocarbon (HC) emission during cold-start operation. Heated exhaust gas oxygen (HEGO) sensors cannot measure the air-fuel ratio (A/F) of exhaust gas during cold-start condition. Precise and fast estimation of air/fuel ratio of the exhaust gas is required to elucidate the wall-wetting phenomena and subsequent HC formation. Refined A/F estimation can enable the control of fuel injection minimizing HC emissions during cold-start conditions so that HC emissions can be minimized. A new estimator for A/F of the exhaust gas has been developed. The A/F estimator described in this study utilizes measured exhaust gas temperature and general engine parameters such as engine speed, airflow, coolant temperature, etc. A fast response, fine-wire thermocouple was used to measure exhaust gas temperatures and a fast response flame ionization detector was used to measure HC emissions during the cold-start period. A Generalized Regression Neural Network Function Approximation (GRNN) was used to estimate the A/F of exhaust gas. The A/F traces generated by the GRNN algorithm agree very well with measurements. | - |
dc.description.sponsorship | The authors would like to express their thanks to the support of Ford Motor Company, the University of Michigan, and the National Research Laboratory (NRL) in Korea. | en |
dc.language | English | - |
dc.language.iso | en_US | en |
dc.publisher | Society of Automotive Engineers | - |
dc.title | Estimation of Air-Fuel Ratio of a SI Engine From Exhaust Gas Temperature At Cold-Start Condition | - |
dc.type | Article | - |
dc.type.rims | ART | - |
dc.citation.volume | 111 | - |
dc.citation.issue | 4 | - |
dc.citation.beginningpage | 592 | - |
dc.citation.endingpage | 600 | - |
dc.citation.publicationname | SAE INTERNATIONAL JOURNAL OF FUELS AND LUBRICANTS | - |
dc.embargo.liftdate | 9999-12-31 | - |
dc.embargo.terms | 9999-12-31 | - |
dc.contributor.localauthor | Bae, Choongsik | - |
dc.contributor.nonIdAuthor | Lee, Tongwon | - |
dc.contributor.nonIdAuthor | Bohac, Stani V. | - |
dc.contributor.nonIdAuthor | Assanis, Dennis N. | - |
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