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Cleaner and simpler Cummins

by Graham Black  |  Wed 12 Jun 2019

Cleaner and simpler Cummins


Cummins has confirmed its plans for Stage 5 emissions-compliant engines, which are simpler and easier to maintain over the long term than their Stage 4 equivalents. Due to improved combustion and air handling technologies, the exhaust gas recirculation (EGR) sub-system has been removed from the F3.8, B4.5, B6.7 and L9 engines.

EGR is a legacy technology where some of the exhaust gases are recirculated back into the cylinders to reduce combustion temperatures, thereby reducing the volume of harmful nitrogen oxides that are produced. A combination of a diesel particulate filter (DPF), a diesel oxidation catalyst (DOC) and an AdBlue system will be packaged in one canister, which will help to ensure that the diesel engines produce virtually zero contaminates.

One of the first manufacturers to take advantage of this new technology is Hyundai, which launched its new Stage 5-compliant HX220A excavator at Plantworx, powered by a B6.7 engine rated at 130kW (174hp). This excavator is the first in a new generation of Hyundai technology that includes a new approach to managing hydraulic flows and includes integrated machine guidance systems. A full report will be in a future issue of Earthmovers.

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