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Understanding New Tier 4 Emission Requirements

Reducing emissions and finding ways to produce energy more cleanly has been a priority for manufacturers for years. As the Environmental Protection Agency (EPA) regularly updates requirements to improve the safety and purity of emissions from engines, companies have been scrambling to keep up without sacrificing efficiency.

The latest Tier 4 Final emissions standards apply to both on-road and non-road engines – so many more manufacturers are now impacted by the rules, not just those associated with locomotive equipment like trucks and trains. Now, engines found in power generators and other stationary equipment will be under scrutiny as well. This especially impacts companies working in the oil and gas sector.

The main purpose of Tier 4 Final regulations is to cut back on the amount of particulate matter (PM) by 80% and nitrogen oxides (NOx) by 45% more than previous regulations. To meet this requirement, companies such as Cummins have already taken steps by implementing a selective catalytic reduction (SCR) after-treatment solution for engines. There’s a long line of chemical reactions that go on during this process, and in the end, ammonia and water vapor create the catalytic reaction that results in the reduction of NOx into a harmless gas. Full details on the chain reaction can be found on EngineerLive.

At Stam, we’ve been working with companies to ensure that our tubes meet their requirements for Tier 4 Final standards. This requires the use of Stainless Steel materials and sufficient insulation on the outside of the tube to keep the gases inside hot (extreme heat is an essential component of the catalytic reaction). The number and severity of bends in a tube can impact heat loss, so we make a conscious effort to reduce the number of bends and ensure smooth transitions to retain the most heat possible.

To learn more about our capabilities and how we can assist you in meeting Tier 4 Final requirements, feel to visit us online or call 1-440-974-2500.

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