Principles of Operation

Principles of Operation
The exhaust system provides an exit for exhaust gases and reduces engine noise by passing exhaust gases through the catalytic converter, a flexible pipe assembly, a muffler assembly and resonator. Rubber exhaust hanger insulators attach the exhaust system to the mounting hooks. The catalytic converter plays a major role in the emission control system. The catalytic converter operates as a gas reactor. Its catalytic function is to speed the heat-producing chemical reaction of components in the exhaust gases in order to reduce air pollutants. The catalyst material inside the catalytic converter consists of a ceramic substrate. The catalytic converter is designed to provide a long life. No maintenance is necessary for the catalytic converter. Sound insulators and heat shields attached to the underbody protect the vehicle from exhaust system heat and should be inspected at regular intervals to make sure they are not dented or out of position. If a sound insulator and heat shield is damaged or shows evidence of deterioration, install a new insulator and heat shield. The sound insulators and heat shields for the muffler, muffler pipe, resonator and catalytic converter are installed separately.