Engine exhaust silencers SM EVO

Heat engines used in industrial installations, whether for power generation or backup, generate particularly high levels of exhaust noise. These emissions are often the cause of nuisance, mechanical stress on structures and regulatory non-compliance.

Noise comes mainly from the opening of exhaust valves, when combustion gases are expelled under high pressure into the manifold. This impulsive phenomenon creates pressure waves that propagate down the exhaust line, affecting operator safety, working environment comfort and equipment durability.

The SM EVO 2 has been designed to meet these challenges: its optimized internal flow promotes greater motor efficiency while keeping pressure losses under control. Its robust structure, combined with a compact footprint, facilitates handling and integration operations.

This synergy between acoustic efficiency, aeraulic performance and compactness makes the SM EVO 2 a benchmark solution for your industrial applications.

The SM EVO 2 embodies the new generation of exhaust silencers for internal combustion engines. Developed to reconcile acoustic performance and airflow, it is easy to integrate and incorporates significant improvements over the previous version.

Available in three attenuation classes(30, 40 and 50 dB(A)), it covers all motor configurations and site requirements. Its optimized design reduces load losses and improves motor efficiency in a compact format.

The SM EVO 2 is designed for rapid integration, in either horizontal or vertical position. Standard connection is via flanges, with counter-flanges, gaskets and bolts supplied. Specific connection options are available on request.

Our standard range has been designed using an advanced engineering approach:

Our SM EVO 2 silencers are the ideal solution for a wide range of demanding applications:

Each SM EVO 2 silencer is defined by its nominal diameter (DN) and sound attenuation class. Other diameters and lengths are available on request.

Discover the benefits that make the SM EVO 2 a first-class acoustic solution

The SM EVO 2 offers a complete range of options to adapt precisely to your specific needs and the constraints of your installation. Find all our options in our product catalog on page 4:

The SM EVO 2 can benefit from a tailor-made approach, based on Groupe Boët ‘s expertise in complex industrial environments. Each silencer can be sized according to the project’s specific operating constraints, using advanced numerical simulation tools.

Our multi-disciplinary design office ensures optimum integration, combining acoustic attenuation, mechanical robustness and aeraulic performance. Our project engineers manage every phase, from design to commissioning, with a strong commitment to quality, deadlines and contractual performance.

In addition to acoustic treatment, our offer includes complementary functions that are essential for integration into a system:

• Gas treatment systems: SCR, catalytic converter, particulate filter (CO, NOx, PM, etc.)
• Industrial spark arrestors,
• Ducts, shafts and chimneys,
• Measuring traps conforming to NFX standard,
• Monitoring interfaces and on-board instrumentation

📄 Still available: the SM EVO 1 range

Although the SM EVO 2 is now our new standard, SM EVO 1 models are still available for order, including the following variants:

• SM EVO 30

• SM EVO 40

• SM EVO 50

These models have proved their worth and continue to meet the specific needs of many customers in a variety of contexts.

Download the SM EVO 1 data sheets below.