Quote:
Originally Posted by musigenesis
Obama had nothing to do with the relevant EPA regulations here, unless he's a time traveller or something. I think you meant to bash "Commiefornia" and/or Bill Clinton, not Obama.
Table 1 in my linked document shows the changes in EPA standards that affected our beloved school buses. 2004 saw the introduction of new HCa+NOx standards that Navistar met with EGR. 2007 saw the introduction of more stringent particulate matter (PM) standards as well as more stringent (and separately-tested) HCa and NOx standards. Navistar met the 2007 standards with the renamed MaxxForce DT (introduced in 2008 ) and things went downhill from there.
Some diesel engine experts advocate only getting engines from 2003(ish) or earlier (pre-EGR) while some think engines from before the 2007 standards took effect are also OK. Nobody thinks MaxxForces are a good idea.
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You are correct, I miss-spoke. My bad.
I still say that the EPA is a problem in and of itself, as they largely serve as an anti-competitive body largely to prevent newcomers from hitting the market. The rules they put into place, as well as other regulatory bodies largely serve to keep those corporations that already exist in place while not allowing new companies to emerge.
And I say this from the perspective of a company working on a solid-fuel turbine generator where our baseline product has a 99.5% efficiency rating on the burn
without catalytics or electronics. Our product would not be allowed on the market because it lacks a number of the 'safety' and 'efficiency/cleanliness' add-ons the EPA and other bodies like to see... But trying to add them in would require de-/down-tuning our product so that equipment could be fitted. And that's without even mentioning the $50K price tag for the test itself.