Kenworth

By Katie Weiler, Managing Editor | September 28, 2010

KenworthA split exhaust system, for Cat-powered dump trucks requiring heated bodies, places the catalytic converter on the frame under the cab, and one or two mufflers in vertical stacks. The exhaust cut-out box is behind the converter, and is routed to the body's floor chambers to prevent materials from sticking to the floor. Government regulations say the combination catalytic converter/muffler used on "Cat-engined" trucks may not be bypassed; the independent converter solves this problem because exhaust still passes through the converter before going to the dump body.

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