The KDI 3404 offers a SMART AFTER-TREATMENT System.
The entire range of KDI engines uses only DOC to comply with the current regulations for under 56 kW. This allows manufacturers to produce machines with compact engine compartments, increasing operator visibility and therefore enhancing safety and productivity. With this system, the external dimensions are reduced and the work cycle is not interrupted, consequently increasing productivity.
In addition, it is not necessary to shield the machines to prevent excessive heat loss and the consequent risk of fire. In configurations above 56 kW, the KDI 3404 engine complies with Stage IV – Tier 4 Final emissions standards thanks to the use of SCR (Selective Catalyst Reduction) to abate the NOx in the exhaust gasses. The special SCR solution chosen by KOHLER Engines helps to underscore the “best fit” philosophy. The “all in one” SCR system contains the DOC (Diesel Oxidation Catalyst), the MIXING Pipe and the SCR in a single piece of equipment. The extremely compact footprint of the whole system and the possibility to fit it at any angle greatly simplifies its integration with the machine.