8.8. The catalytic converter - the general information, check of a state and replacement

In order to avoid violation of the guarantee certificates extending to components of systems of decrease in toxicity of the fulfilled gases you make check and service of the catalytic converter in the conditions of a workshop of car service.

General information

The catalytic converter is a component of systems of decrease in toxicity of the fulfilled gases, is switched on in structure of system of release and serves for decrease in issue in the atmosphere of toxic components. There are two types of catalytic converters. The ordinary oxidizing converter allows to reduce the content in the fulfilled gases of hydrocarbons and monoxide of carbon. The three-functional catalytic converter in addition allows to reduce emission of nitrogen oxides (NOH). On all models considered in the present manual three-functional catalytic converters are used.

The catalytic converter is a part of system of production of the fulfilled gases and externally looks as the additional muffler.



1. The diagnostic equipment for check of serviceability of a condition of the catalytic converter is expensive and extremely difficult in operation. At emergence of suspicions on failure of the converter, drive away the car for check on car repair shop.
2. Every time when the car climbs any reason above the ground, examine the converter on existence of signs of mechanical damages, traces of leaks and development of corrosion. Check a condition of welded seams and reliability of tightening of flange bolts of fastening of the device to sections of system of production of the fulfilled gases. The defective catalytic converter is subject to replacement.
3. You watch reliability of fastening of the thermofilter and that between the converter and elements of a chassis/body the gap of sufficient size constantly remained (see the Head Nastroyki and routine maintenance).



The description of procedures of replacement of components of system of production of the fulfilled gases is provided in the Head of the Power supply system and release.