A cleaner future built around you
We see advantages to both Selective Catalytic Reduction (SCR) and Cooled Exhaust Gas Recirculation (CEGR) technologies, depending on engine size and load, and also application demands. Our Tier 4 solution takes a tailored approach to each model; it is designed to achieve the required reduction in pollutants at the lowest operating costs – and always guarantee the high productivity and performance you expect from New Holland equipment. Our solution is also forward-looking; leading industry experts agree that SCR will be necessary to achieve Tier 4 final standards. We see it as a vital part of our interim solution too. This also means that we have already invested in the research and development needed to achieve Tier 4 final standards, and we can focus on developing the next generation of equipment.
Our Tier 4 solutions integrate each machine’s engine, hydraulics and electronics systems in order to optimize its performance and efficiency. In addition, models with SCR technology are inherently fuel efficient, as combustion is optimized for maximum efficiency.
The main components of the CEGR system are: Exhaust Gas Recirculation valve, EGR cooler, Diesel Oxidation Catalyst (DOC), Diesel Particulate Filter (DPF) and, in some cases, a regeneration burner.
The main components of the SCR system are the supply module, a Diesel Exhaust Fluid tank, dosing module and SCR catalyst.
Selective Catalytic Reduction (SCR) technology has been used in automotive applications for several years in Europe and is currently being introduced in North America too. Our engine technology partner, Fiat Powertrain Technologies (FPT) has sold 100,000 SCR engines for the haulage industry since 2006. We are drawing on their extensive expertise in developing SCR solutions specifically optimized for the load cycles of our New Holland off-road equipment.
It is very simple: you just need to refill the DEF/AdBlue® tank when you refuel, or when you’re checking fluid levels. A warning light will signal that your DEF/AdBlue® tank is running low.
It is a non-toxic, colorless, odorless 32.5% solution of urea and purified water.
Small quantities of DEF are introduced into the exhaust stream and, when mixed with the nitrogen oxide (NOx) emissions, break it down into harmless nitrogen gas and water vapor. Nitrogen makes up 78 percent of the air we breathe.
The DEF/AdBlue® tank capacity will be determined for each model to ensure every fill of DEF lasts at least as long as 2 fills of diesel. In big equipment, such as heavy line excavators, a fill of DEF will last as long as 4 fills of diesel, which is enough for an average of two weeks at medium-to-heavy work cycles.
DEF/AdBlue® will be available at all New Holland dealerships. It is not a dangerous substance for transportation but it must be transported and stored separately from nitrites. Transportation should be made in insulated tanks or on plastic tank pallets (IBC). Storage Tanks should be made from a suitable material of construction; this could either be a resilient plastic (HDPE for example) or a suitable grade of Stainless Steel. Some tanks can be lined but it is important that the lining/coating is not only suitable but is also checked periodically for deterioration. Regular screening of the DEF taken from the storage tank will determine these factors.
The DEF tanks are approximately 10% of the fuel tank size, depending on the product.
There is not a drain to the electrical system other than the temperature sensor because the DEF tank is heated by coolant.
If you attempt to operate the machine on an empty DEF/AdBlue® tank, you will notice a degradation of equipment performance, followed by the inability to start the engine.
DEF/ AdBlue® has a typical shelf life of 12 months, if properly stored. Storage temperature should not fall below -11°C/12°F (DEF freezing point) or exceed +30°C/86°F, as this would reduce its shelf life.
The engine coolant warms the DEF/AdBlue® inside the tank, which is designed not to be affected by freezing temperatures. At particularly low temperatures, if the DEF reaches its freezing point (-11°C/12°F), the engine will run while the SCR system is de-icing and the machine will be operating normally.
Equipment manufactured before the Tier 4 regulations come into force does not have to comply with the new emissions standards, so you don’t have to.