But if stronger business means using up emissions credits faster, then the depth of that emissions-credit reserve could become crucial. Should emissions credits run out before the ICT+ SCR engine is certified, only successful appeal of the struck-down EPA interim ruling would allow Navistar to keep selling its own engines.
"We will continue to work with the agencies to ensure that our customers receive uninterrupted deliveries in all 50 states during this transition," said Ustian.
The company is applying characteristic spin to its newly acknowledged technology.
"We have made tremendous progress with in-cylinder technology and with the introduction of ICT+ our goal is to offer the world's cleanest and most fuel efficient diesel engine—benefiting both our customers and the environment for years to come," said Ustian.
The company states that combining its in-cylinder technologies with SCR will "meet 2010 U.S. Environmental Protection Agency (EPA) emissions regulations and position the company to meet greenhouse gas (GHG) rules in advance of 2014 and 2017 requirements."