Automobile emissions: a problem based learning activity using the Clean Air Act

dc.citation.epage8en_US
dc.citation.spage1en_US
dc.contributor.authorGrauer, Bette
dc.contributor.authorGrauer, Diana
dc.contributor.authoreidgrauerben_US
dc.date.accessioned2013-10-07T15:50:38Z
dc.date.available2013-10-07T15:50:38Z
dc.date.issued2013-10-07
dc.date.published2010en_US
dc.description.abstractA problem-based learning activity has been developed using automotive engineering and requirements of the Clean Air Act to examine complex environmental issues involving automobiles. After an introductory study, students sample the O2, CO, NO, and NO2 levels of automobile exhaust and analyze the results. The activity employs a constructivist approach and is appropriate for entry-level engineering classes. It can be modified for use in upper level engineering classes as well. To prepare for the emissions analysis lab, students study the composition of atmospheric gases, products of combustion, and the measurement of automotive emissions. The laboratory component is the actual sampling of engine exhaust from student selected automobiles using an exhaust emissions analyzer. Students use sample values of emission concentrations for O2, CO, NO, and NO2, combustion kinetics, and fluid dynamics to calculate the engine fuel flow rate, exhaust flow rate, and mass emission rates for CO and NOX. This paper presents an overview of the introductory studies followed by a description of the automobile exhaust sampling activity. Representative sample data of automobile emissions are presented along with a discussion of the sampling results, a method for approximating pollutant mass emission rate levels, and comparison to EPA standards.en_US
dc.description.conferenceAmerican Society for Engineering Education Annual Conference & Exposition (117th, June 2010, Louisville, KY)en_US
dc.identifier.urihttp://hdl.handle.net/2097/16618
dc.language.isoen_USen_US
dc.rightsPermission to archive granted by the American Society for Engineering Education, October 4, 2013.en_US
dc.subjectAutomobile emissionsen_US
dc.subjectClean Air Acten_US
dc.subjectEmissionsen_US
dc.subjectEngineering educationen_US
dc.subjectProblem-based learningen_US
dc.titleAutomobile emissions: a problem based learning activity using the Clean Air Acten_US
dc.typeConference paperen_US

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