NASHVILLE, Tenn. — The Deere solution to emissions involves a solution of urea.
Geoff Stigler of John Deere announced his company’s EPA Tier 4 final emissions solution for its engines during the Commodity Classic farm show in Nashville, Tennessee. For the larger diesels, the company will combine its current cooled exhaust gas recirculation and filtration with selective catalytic reduction through the introduction of diesel exhaust fluid to the exhaust stream.
Deere’s system will be based on the current Powertech engine platform that meets the Tier 4 Interim, EU Stage 3B regulations.
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The larger engines will use the current EGR system with a diesel oxidation catalyst and a diesel particulate filter. It will sport the addition of a SCR system.
Stigler says the engines will be running higher fuel injection pressure to obtain better quality fuel atomization and combustion in the cylinders.
“We feel our approach will let us use less diesel exhaust fluid than the competition to meet the regulations. That means our tanks can be smaller. They will need filling less often and it will mean we should have longer service intervals on our DEF filters,” he said.
For more, look for the story in the March 15 Western Producer.
