Catalytic Converter
Housings (industry leaders are DCL & CCC)
o Stainless steel doesn’t warp or swell with heat (carbon steel okay for silencer)
o Front loaded gasket design eliminates blow-by and makes replacing elements easy
o Mounted at 45 ͦ angle for changing elements
Elements (industry leader is CCC)
o Vacuum brazed substrates offer unsurpassed physical integrity; no sag, telescope or nest
o Stabilized washcoat
o Precious metal loading; how much, how evenly spread
o C-channel banding design and handle
o Typical catalyst failure causes: overheating, masking, poisoning, misfires & bypass leakage
Catalyst Element Components
Effect of Lambda on 3-way Catalyst Performance
Effect of Bypass Leakage on 3-way Catalyst Performance
