Tier 4 engines - All you need to know

At Conplant, we pride ourselves on being able to deliver machines that not only meet world’s best practice environmental standards, but still deliver power, performance and productivity.

That’s why we’ve invested our resources in procuring the latest Deutz US EPA Tier 4 / EU Stage V emission standard engines and fitted them to more than 100 of our rollers.

How does it work?

Unlike diesel exhaust engines that contain potentially harmful components such as particulate matter (PM), carbon monoxide (CO), hydrocarbons (HC), oxides of nitrogen (NOx) and oxides of sulfur (SOX), Tier 4 engines significantly reduce particulate matter and NOx emissions.

Non-road diesel engines were identified as a significant source of air pollutants and greenhouse gas emission in Australia, due to their low uptake of emission control technology. The World Health Organisation’s International Agency for Research on Cancer has even identified fine-particle emissions from diesel exhaust as a carcinogen once it has been inhaled into the lungs.

The Tier 4 engines aim to minimise this risk on site by keeping up with today’s US and EU ‘tiers’ or ‘stages’ of emission standards.

How do they do this?

Yellow-Mono-Icon_01 Tier 4 1
Improving airflow through the engine - thus reducing NHMC and PM.
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A series of small fuel injections during the combustion cycle, instead of a single injection “blast” reducing both PM and NOx.
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Exhaust Gas Recirculation (EGR) - a portion of the exhaust is routed back into the intake air - this dilutes the intake air with inert gases and absorbs heat, reducing NOx.
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Diesel Particulate Filter (DPF) to reduce PM.
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Closed Crankcase Ventilation (CCV) - blow-by gases that get into the crankcase are recirculated back into the engine instead of vented to the atmosphere, thus reducing NMHC and PM.
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Selective Catalytic Reduction (SCR) - a reduction reaction converts NOx to nitrogen, water, and CO2. This drastically reduces NOx.

How will Tier 4 engines benefit you?

Aside from lowering emissions and ensuring your workers are protected against potentially hazardous air pollutants, Tier 4 diesel engines have been designed to ensure productivity and performance is not compromised. In fact, in terms of power delivery and torque response, manufacturers were able to improve performance compared to their diesel engine counterparts.
  • Improve emissions across your worksite

  • Improves uptime and minimises operating costs

  • Cost-effective and use less fuel

  • Maximises productivity across a range of applications

  • Greater power delivery and torque response for improved performance

Do you need to use Tier 4 engines?

Australia currently has no regulations to control noxious emissions from non-road diesel engines. However, in April 2018, Environment Ministers agreed to an evaluation of the potential for a national approach to manage emissions from non-road diesel engines as a priority action under the National Clean Air Agreement.

Ministers are currently in the process of undertaking evaluations and by 2022 evaluation results will be available and new policy options will be considered. We anticipate this could lead to a range of impacts for the construction, mining and agricultural industries, where emission targets may be imposed. These Tier 4 final diesel engines certainly meet the criteria for use in the US and EU areas, and we expect Australia to follow suit in the coming years.

Where can I get machinery equipped with Tier 4 engines?

Right here at Conplant. We currently have a wide range of Tier 4 Final rollers in our hire and sales fleet that are ready to be shipped to your worksite. If you share our view that protecting our environment and people is important, contact us and ask about these revolutionary engines today.

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Find out more

Want to bring Tier 4 final diesel engines to your site? Speak with a representative today about including machinery equipped with Tier 4 engines in your next hire.