No DPF – an advantage!

No-DPF logo - StageIV

1) Reduced Performance by Exhaust Gas Recirculation (EGR)

With EGR, exhaust gas is reverted to the combustion chamber to reduce combustion temperature for a lower NOx ratio. With lower combustion temperature the engine performance is reduced as well. To meet former performance level, engineers had to increase engine performance, which results in higher fuel consumption.


2) Reduced Performance by Diesel Particulate Filter (DPF)

Diesel Particular Filters create an exhaust back pressure due to ceramic filter elements. This back pressure reduces engine performance as well, engine performance must get increased which results in higher fuel consumption.


3) Sulphur Intolerance

All Stage IIIB / Stage IV engines have a strict 0-tolerance to Sulphur. This is no problem in most countries in Europe, due to regulations Sulphur ratio in fuel is close to zero. But in resale markets for used machines like North Africa, Middle East or Russia, the Sulphur ratio in diesel is high. To sell in these markets, expensive modifications are needed, which can reduce resale value.


4) Fuel Consumption for Regeneration

A DPF needs regeneration. During a forced regeneration process started by the operator, which takes about 20 to 30 minutes, the DPF will get cleaned from soot particles by heat. For burning out this soot, a certain amount of diesel fuel will be needed.


5) DPF replacement

On average every 3000 to 4000 hours (depending on the usage and application), the DPF needs a professional cleaning. For this, the DPF will need to be replaced by a cleaned unit, a process which will take time and will have a cost.


6) High Temperature during Regeneration DPF

During forced regeneration of the DPF, the exhaust temperature is rising up to 600-700°C. Because of this, it is needed to keep the machine far from flammable goods due to safety reasons. That means for customers, which are handling these goods (coal, forestry, etc.), special precautions will apply.


7) No downtime

SCR equipped machines require no regeneration of components and can continuously work at full performance.