Test The Limits

Improving Our Air Quality: Engine Manufacturers Face Increased Regulatory Requirements

By Ed Tate

July 21 2016

Air quality affects everyone. To continue the trend of already improving air quality in the EU, the limits for particulate matter and NOx will be reduced again by the Stage 5 regulations which start in 2019. Unlike prior emission standards which focused on engines typically used in automobiles and trucks, these new regulations will affect engines which range from the smallest, like those used in lawn equipment, to the largest like those in ships. These changes will reduce smog and the black smoke seen from diesels.


Manufacturers will meet these regulations by adding equipment to the exhaust system that traps particulate matter and removes NOx. This equipment uses chemistry and heat to make the air cleaner. For the manufacturers adding this equipment to an already dense engine compartment, the additional heat can cause engines to fail earlier. The additional heat can cause oil to run hotter and break down under load. Sensitive parts like electronics can cause fail at high temperatures.


Fortunately, automakers have successfully addressed thermal protection as engine compartments have gotten more compact and operate much hotter in the quest for improved fuel economy. PowerFLOW is used by many automakers to design thermal protection for their engines.  The lessons learned by automakers can be applied to both smaller and larger engines that will be installed in a variety of equipment.


Simulation using PowerFLOW allows any equipment OEM to successfully design their thermal protection for cleaner and longer lasting engines. PowerFLOW simulations allow an OEM to find hot spots and fix them before the first physical tests are done. This saves time and reduces expense. With only 24 months until the Stage 5 regulations are implemented, doing the job right the first time will be critical to meet business and customer expectations. Making sure an engine runs cleanly for the long term is good for everyone.


To read a recent article on this in Diesel Progress, It’s Official: Stage 5 Emissions Rules Approved please click here