1993-03-01

The Development of a Production Qualified Catalytic Converter 930133

Catalytic converters have become a viable aftertreatment system for reducing emissions from on-highway diesel engines. This paper addresses the development and production qualification of a catalytic converter.The testing programs that were utilized to qualify the converter system for production included emissions performance, emissions durability, physical durability, and field test programs. This paper reports on the specific tests that were utilized for the emissions performance and emissions durability testing programs. An explanation on the development of an accelerated durability test program is also included.The physical durability section of the paper discusses the development and execution of laboratory bench tests to insure the catalytic converter/muffler maintains acceptable physical integrity. Also included is a discussion on the relationship between the field test and bench testing programs and the modifications that were necessary to install catalytic converters onto 1991 production on-highway trucks.

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