New Holland Construction Tier 4 - A Cleaner Future Built Around You, Our emissions compliance technologies

Frequently Asked Questions

Why is New Holland Construction offering two technologies?

We see advantages to both Select 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 – while delivering 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.

Will fuel consumption be higher in the Tier 4 models?

Our Tier 4 solutions integrate each machine’s engine, hydraulic and electronic systems in order to optimize its performance and efficiency. In addition, models with Select Catalytic Reduction (SCR) technology are inherently fuel efficient, as combustion is optimized for maximum efficiency.

What are the components of New Holland’s Cooled Exhaust Gas Recirculation (CEGR) system?

The main components of the CEGR system are: exhaust gas recirculation valve, EGR cooler, diesel oxidation catalyst, diesel particulate filter (DPF) and, in some cases, a regeneration burner.

How will the Cooled Exhaust Gas Recirculation (CEGR) system affect maintenance?

The diesel particulate filter (DPF) is designed to last for thousands of hours, so there will be very little effect on maintenance. On machines with particularly heavy work schedules or long life, changing the filter is easy to do, as the DPF system is very accessible.

What are the components of New Holland’s Select Catalytic Reduction (SCR) system?

The main components of the SCR system are the supply module, a diesel exhaust fluid tank, dosing module and SCR catalyst.

Is Select Catalytic Reduction (SCR) a new technology?

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 freight industry since 2006. We are drawing on FPT's extensive expertise in developing SCR solutions specifically optimized for the load cycles of our New Holland off-road equipment.

What do I need to do to run a machine with an Select Catalytic Reduction (SCR) system?

It is very simple: you just need to refill the DEF tank when you refuel, or when you’re checking fluid levels. A warning light will signal that your DEF tank is running low.

What is Diesel Exhaust Fluid (DEF)?

It is a non-toxic, colorless, odorless 32.5-percent solution of urea and purified water.

How does Diesel Exhaust Fluid (DEF) work in a selective catalytic reduction (SCR) system?

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.

How often will I need to refill the Diesel Exhaust Fluid (DEF) tank?

The DEF tank capacity will be determined for each model to ensure every fill of DEF lasts at least as long as two fills of diesel, plus freezing capacity (when frozen, fluids expand, taking up more space) and some spare capacity.

Will Diesel Exhaust Fluid (DEF) be easy to find?

DEF 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.

What happens if I forget to refill the Diesel Exhaust Fluid (DEF) tank?

If you attempt to operate the machine on an empty DEF tank, you will notice a degradation of equipment performance, followed by the inability to start the engine.

What size is the Diesel Exhaust Fluid (DEF) tank?

The DEF tanks are approximately 10% of the fuel tank size, depending on the product.

How long can I store Diesel Exhaust Fluid (DEF)?

DEF has a typical shelf life of 12 months, if properly stored. Storage temperature should not fall below 12°F/-11°C (DEF freezing point) or exceed 86°F/30°C, as this may reduce its shelf life.

Will I need to upgrade my Tier 3 machines?

Some states in the US have stricter emission regulations than the EPA requirements.  Some municipalities even require meeting these stricter guidelines to participate in the bidding process for government contracts.

What do I do if my Diesel Exhaust Fluid (DEF) freezes?

The engine coolant warms the DEF inside the tank, which is designed not to be affected by freezing temperatures. At particularly low temperatures, if the DEF reaches its freezing point (12°F/-11°C), the engine will run while the SCR system is de-icing and the machine will be operating normally.

Is the electrical system on the machine up to the power requirements to heat the Diesel Exhaust Fluid
(DEF) tank?

There is not a drain to the electrical system other than the temperature sensor because the DEF tank is heated by coolant.