TWC/GPF support MAT
The three-way catalytic converter is a conventional solution of gasoline exhaust after-treatment. As its operation temperature ranges from 400 to 1100 deg.C, material with adequate expansion responds should be applied to make up the thermo-expansion of metal/ceramic gap.For design with enough substrate iso-strength, classical intumescent mat KY100 is a good choice. While ultra-thin-wall substrate is used, non-intumescent mat CNE and PNE is recommended.
Gasoline exhaust after-treatment system should have GPF to meet the requirement of China VI stage standard. The huge back-pressure of GPF challenges the total life cycle performance of support mat. Polycrystalline non-intumescent mat PNE could take on this task, while in some case ceramic non-intumescent mat CNE could also be used.
DOC/DPF/SCR/ASC/POC support MAT
Diesel exhaust after-treatment system is the combination of DOC, DPF, SCR, ASC and POC. These catalytic units usually have quite larger diameter than TWC and GPF, and run in relative low temperature range. In this case, classical intumescent mat KY100 could not be used as it could not work well below 400deg.C. Micro-intumescent mat KY800 and its high-performance version KY860 are good solutions in most cases. When the relative expansion of metal/ceramic gap is large, ultra-mirco-intumescent mat KY860 and non-intumescent mat CNE are prefered. When the gap is extremly large, non-intumescent mat PNE is better choice.
Vehicle Exhaust Insulation Material
Insulation Material located in the outer face of exhaust pipe and/or catalytic unit, could increase catalytic unit operation temperature significantly and hence enhance catalytic efficiency.
Except for inflame retarding and thermos insulation, excellent insulation material should also be waterproof and antifouling, as well as ultra-long thermal life and agile assembling method.