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Inspection and Maintenance for Heavy-Duty Diesel Vehicles: Part 1 - Evaluating the Need
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English
Abstract
This paper reports the results of Phase I of a study of heavy-duty diesel inspection and maintenance (I&M). Heavy-duty diesel vehicles have generally been exempted from I&M programs, due to the lack of a suitable inspection procedure and uncertainty as to the reduction in excess emissions which might result. This paper describes common types of tampering and malmaintenance which can lead to excess emissions from heavy-duty diesel trucks and buses, and presents the results of two surveys aimed at estimating the frequency of occurrence of these problems. Data showing the effects of some of these problems on engine emissions are also presented. Finally, a preliminary estimate of the impact of excess emissions from diesel trucks and -buses in California is presented. Further work to develop suitable inspection procedures and to evaluate the costs and benefits of alternative I&M programs is being performed in Phases II and III of the project.
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Citation
Weaver, C. and Klausmeier, R., "Inspection and Maintenance for Heavy-Duty Diesel Vehicles: Part 1 - Evaluating the Need," SAE Technical Paper 861546, 1986, https://doi.org/10.4271/861546.Also In
References
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- Engine Manufacturer's Association “Heavy-Duty Diesel Engine In-Use Emission Testing Meeting” briefing package for a presentation to the California Air Resources Board Staff El Monte, CA Sept. 11 1985
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- Weaver C.S. Miller C. Nelowet L.A. Particulate Control Technology and Particulate Emissions Standards for Heavy-Duty Diesel Engines Energy and Resource Consultants, Inc. Boulder, CO 1984
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- Letter (with attachments) from D.C. Dowdall of Caterpillar to C.S. Weaver October 7 1985
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- Letter (with attachements) from E.J. Sienicki of International Harvester to C.S. Weaver November 27 1985
- Ullman T.L. Hare C.T. Baines T.M. “Influence of Maladjustment on Emissions from Two Heavy-Duty Diesel Bus Engines” SAE Paper # 840416