A catalytic converter is a device that can remove polluting substances contained in the exhaust gases of internal combustion engines. It is not a filter, but a chemical reactor, where conversion reactions happen, between the precious metals it contains and the exhaust gas.<\/p>\n
The duration of the converter depends on the quantity of precious metals, while its efficiency depends on the way they are distributed inside the substrate. At BRAIN, we use high-quality, Euro 4-certified monoliths with a warranty of 36 months.<\/p>\n
In order for the reactions to happen, the catalytic converter needs to reach a temperature of 400\u00b0C as quickly as possible. Such a rapid increase of temperature will cause thermal, chemical and mechanical stress to the substrate, which is why it has to be built with a light and non-bulky material, that allows for large surfaces.<\/p>\n
With this respect, a metallic substrate has several advantages over a ceramic one:<\/p>\n
It\u2019s not a filter, but a proper chemical reactor.<\/p>\n
<\/p>\n
Wall thickness<\/p>\n
Free area<\/p>\n
Working area<\/p>\n
Specific heat (0-100\u00b0c)<\/p>\n
Heat conductivity at 20\u00b0C<\/p>\n
Heat conductivity at 60\u00b0C<\/p>\n
Density<\/p>\n\t\t\t\t<\/div>\n
METALLIC<\/p>\n
>0,03mm<\/p>\n
92%<\/p>\n
3,2 m\u00b2\/dm\u00b3<\/p>\n
517 j\/kg \u00baC<\/p>\n
12 W\/m \u00baC<\/p>\n
20\u00a0W\/m \u00baC<\/p>\n
7,3 g\/cm\u00b3<\/p>\n\t\t\t\t<\/div>\n
CERAMICI<\/p>\n
>0,11 mm<\/p>\n
76%<\/p>\n
2,4 m\u00b2\/dm\u00b3<\/p>\n
1050\u00a0j\/kg \u00baC<\/p>\n
1 W\/m \u00baC<\/p>\n
0,8 W\/m \u00baC<\/p>\n
2,6\u00a0g\/cm\u00b3<\/p>\n\t\t\t\t<\/div>
Substrati in ceramica o in metallo? Mentre i primi sono pi\u00f9 diffusi ed economici, i secondi offrono diversi vantaggi.<\/p>\n","protected":false},"author":3,"featured_media":818,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":[],"categories":[33],"tags":[],"yoast_head":"\n