Summary and Analysis of Comments to the Draft Recommended Practice for Measurement of Gaseous and Particulate Emissions from Heavy-Duty Diesel Engines under Transient Conditions

摘要

EPA will soon publish a Notice of Proposed Rulemaking (NPRM) for the control of heavy-duty diesel particulate emissions for 1985 and later model year engines. Because the early establishment of a test procedure is essential for obtaining test data in response to the proposal, a draft particulate test procedure was distributed to interested parties in May 1979. The document was accompanied by a request for comments and suggested modifications. Two heavy-duty diesel manufacturers, Cummins and Caterpillar, submitted comments addressing the draft particulate test procedure. This report consists of a review of these comments and recommendations for changes to the draft test procedure.