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+--- Thema: cats (/showthread.php?tid=17799)
cats - sharky - 20.10.2005
Hai Leute
Bei meinem Projekt ist eine Frage aufgetaucht wegen Abgaswerte und Zulassung.
Auf der Idavette Homepage ist u.a. folgendes bezgl. Katalysatoren beschrieben: https://www.idavette.net/hib/02ls6/page3.htm
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The Corvette "under-floor" cats were the same from MY97-01. To meet California LEV for MY00, Juriga’s team of engineers at GM Powertrain Division (GMPT) had to make cat light-off happen sooner and the solution for ’00 California cars and all ’01s was to move the catalytic reaction closer to the exhaust heat by adding small, close-coupled, catalytic convertors, or "pup cats", upstream of the under-floors and closer to the exhaust manifold outlets. While the official ratings did not change, ’00 California cars were probably about 5hp short of the ’97s, ’98s and ’99s because of the pups. MY01 had no deficiency because the LS1 was changed in other areas negating the pup’s power loss.
Engineers call the interior structure, or "substrate," of a catalytic converter a "brick" because of its characteristic shape. The ’97-’01 under-floor cat used a single brick having a combination of palladium and rhodium as its reactive ingredients. The ’02 under-floor is a two-brick design. The front brick uses palladium and the rear brick uses a platinum-rhodium combination.This new cat, along with changes in PCM calibration, allows the LS6 to meet LEV without pup cats and their exhaust back-pressure. There were other benefits of going pupless, too: less cost and a 5.5lb. weight reduction.
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Wie ist bei den D/A/CH zugelassenen 2002er C5 LS6 405HP? Haben diese nun 2 oder 4 Katalysatoren? Weiss jemand etwas genaueres über die two-brick cats?
Ich würde mich auf eine Antwort sehr freuen
Gruss sharky