SCR and CEGR: Case IH unveils its solutions to meet Tier 4A standards

Case IH will offer a dual solution to comply with the new Tier 4A emission standards for non-road vehicles.
The manufacturer has selected two processes for its equipment: selective catalytic reduction (SCR) for engines above 100 ch and cooled exhaust gas recirculation (CEGR) for engines below 100 ch.

The Tier 4 standards require a minimum 90% reduction in particulate matter and a 50% reduction in NOx compared with Tier 3 levels.

According to Case IH, CEGR and SCR systems make it possible to meet these targets by lowering nitrogen oxide and particulate emissions, delivering cleaner engines and longer service intervals, as well as greater fuel compatibility for the more powerful engines using SCR technology.

?SCR technology is the best solution for agricultural machines with a powerful engine, especially if you consider the importance that the largest farms attach to fuel consumption and maintenance costs,? says Duane Nelson, Director Global Brand Management at Case IH.

He adds: ?SCR technology is a quiet system that produces no heat and does not alter the engine's main function in any way. It in no way compromises engine performance; on the contrary, it improves it.?

How does SCR technology work?

The exhaust gases pass through the catalytic converter, where a non-toxic, colorless and odorless solution of urea and purified water is sprayed. When this solution mixes with the hot exhaust gases, it breaks down into water vapor and nitrogen.

Duane Nelson sought to reassure future customers about the infrastructure required for this switch to the SCR system, stating that close collaboration with Case IH dealers will enable them to equip themselves and adapt quickly to these new requirements.

He adds that ?the urea tank is easy to fill and is designed to last at least as long as two fuel tanks.?

Case IH is looking ahead by choosing a system that meets the Tier 4B standards scheduled for 2014. Even though other solutions may be applied before that deadline, SCR technology is the most effective system for meeting EPA standards for agricultural equipment.

CEGR technology

For engines below 100 ch, Case IH will use CEGR technology, because the market for these engines is concentrated in segments where operating conditions are not as intensive as those of higher-power machinery.

Case IH is therefore ready to meet the new standards and continues to satisfy its customers by offering them even more comfort, performance and profitability, all while respecting the environment.