PWL 4.5L engine, no DPF

John Deere Power Systems has introduced the PowerTech PWL 4.5L engine, which will meet Final Tier 4/Stage IV emissions regulations without a diesel particulate filter (DPF). The 63 kW to 104 kW (85 hp to 140 hp) engine was announced at Bauma 2013 in Munich, and complements the John Deere lineup of Final Tier 4/Stage IV off-highway diesel engines rated 36 kW to 448 kW (48 hp to 600 hp) that were previously announced.

http://www.deere.com