Several Navistar engines will not meet U.S. Environmental Protection
Agency (EPA) emissions standards after February 29, 2012, when
its emissions credits are expected to run out, according to the California Air Resources
Navistar's use of Exhaust Gas Recirculation (EGR) technology
does not meet EPA standards on nitrogen oxide reduction
(NOx), without the use of credits accrued in pre-2010
The company runs out of credits at the end of next month and may
be fined unless it deploys additional technology in order to meet
federal standards or stops selling vehicles. CARB has said it is
prepared to rescind an executive order that has allowed Navistar to
sell non-compliant engines in the state.
In response, Navistar says it plans to unveil a new engine "very
soon", which will meet the NOx emissions reduction
standards. Spokeswoman Karen Denning told Land
Line magazine that the company "remains confident in our
A lawsuit by the company challenging the EPA's approval of Selective Catalytic
Reduction (SCR) technology was recently dismissed, as reported
by discoverDEF.com earlier
in the month .
Navistar is the only heavy-duty vehicle manufacturer not to use
SCR technology to meet the EPA 2010 emissions standards. The issue
affects Navistar big bore engines of 11, 13 and 15 liters.