![]() With the current economic climate, companies try to be as efficient as possible on spending their research budget. Both options can cost from a few millions to maybe billions of dollars. Money spent on research to develop a new engine, or modify an existing engine in order to meet the new standards. From an engine manufacturer’s perspective however, this means money. To most of us, numbers mean nothing at all. With every new legislation, the maximum acceptable levels of pollutants change.įor example, when we compare the change of the Nitrogen Oxides (NOx) limits between EPA2007 and EPA2013, it went from 1.2g/hp-hr to 0.2 g/hp-hr. One of the pollutants that interest the legislators particularly, is Nitrogen Oxides (NOx). It is a fact nowadays that diesel emission legislation is becoming stricter and stricter. I have been a professional diesel training instructor for six years, so let me explain what it is and then answer your questions! DEF Overview I’ve seen a ton of questions out there about Diesel Exhaust Fluid, or DEF for short.
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