Volvo Tier 4 Final/Stage IV engines tackle emissions

Volvo Tier 4 Final/Stage IV engines tackle emissions

The Volvo Tier 4 Final/Stage IV engines set new benchmarks in emission control and fuel efficiency. As highlighted on the Volvo Group's official website, these engines achieve a 95% reduction in nitrogen oxide (NOx) emissions and enhance fuel efficiency by 5% compared to previous models. Built with smart technology derived from 180 years of experience, these engines not only comply with stringent EU and US emissions legislation, but they also reduce overall running costs.

Advanced Engine Features

Smart Combustion Technology

The V-ACT (Volvo Advanced Combustion Technology) engines come equipped with advanced fuel injection systems, superior air handling, and enhanced engine management. These features collectively contribute to an 80% reduction in NOx levels, meeting stringent legislation requirements by lowering NOx from Tier 4 Interim/Stage IIIB levels of 2.0g/kWh to just 0.4g/kWh.

Selective Catalytic Reduction (SCR)

To meet new emissions requirements without significantly altering the base engine architecture, Volvo has incorporated Selective Catalytic Reduction (SCR) technology. SCR has been thoroughly vetted in over one million Volvo trucks since 2005. By injecting DEF (diesel exhaust fluid)/AdBlue® into the exhaust flow, SCR converts NOx into nitrogen and water, reducing NOx emissions by as much as 95%.

Exhaust Gas Recirculation (E-EGR)

The cooled external exhaust gas recirculation (E-EGR) system further reduces NOx by lowering the amount of oxygen in the combustion chamber, which in turn decreases combustion peak temperatures. A variable geometry turbocharger (VGT) on the D13 and D16 engines, and a waste-gated turbocharger on smaller engines, provide immediate torque at low speeds, improving fuel efficiency and engine performance.

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Diesel Particulate Filter

Automatic Particulate Matter Reduction

The fully automatic diesel particulate filter (DPF) system minimizes harmful particulate matter without interrupting machine operation. Passive regeneration occurs at low exhaust temperatures to oxidize particulate matter, while reset regeneration incinerates particulate matter at high temperatures every 500 hours without operator intervention.

Enhanced Engine Management System

The advanced Engine Management System (EMS) adapts instantaneously to operating changes. With a more powerful processor, the EMS supports additional functions with greater precision and control. Filter maintenance is efficient and straightforward, required every 4,500 hours, or 6,000 hours for the D4-D8 models.

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Rigorous Testing

Field and Bench Testing

Volvo CE’s Tier 4f/Stage IV engines have undergone over 25,000 hours of testing in harsh conditions such as sub-zero temperatures, extreme heat, and high altitudes. Tested in articulated haulers, wheel loaders, and excavators, as well as engine test benches, these engines have proven to be robust and reliable.

Optimal Performance

Engine and Machine Synchronization

Volvo ensures perfect harmony between engines and machines by optimizing engine output, drivetrain, and hydraulics. Components are matched for superior efficiency, performance, and productivity. Even though Volvo engines are designed for specific product lines, common parts are used across models for easy replacement and less downtime.

Comprehensive Support

Volvo CE’s Tier 4f/Stage IV engines are backed by an extensive service network and a range of customer solutions, including DEF/AdBlue management and cost-effective DPF exchange services. Customer support agreements (CSAs) offer flexibility and cost control, while the Volvo CareTrack telematics system provides remote monitoring of machine functions to improve productivity and efficiency.

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