Meeting Stage V emissions standards is essential for power generation, construction, marine, and industrial operators. Stage V requires strict limits on NOx, particulate matter (PM), and particle number (PN), while still controlling noise and maintaining engine performance.
At Industrial and Marine Silencers Ltd (IMS), Stage V compliance is delivered through fully integrated exhaust systems. By combining traditional silencers with Airless SCR, DPF, DOC, and advanced emissions control technologies, IMS provides turnkey solutions that address both emissions and noise in one engineered system.
What Is Stage V Compliance?
Stage V sets the most stringent emissions limits yet for non-road mobile machinery (NRMM) and certain stationary engines. To comply, engines must use aftertreatment systems like:
- DPF (Diesel Particulate Filter) – captures fine particles
- SCR (Selective Catalytic Reduction) – reduces NOx via AdBlue injection
- DOC (Diesel Oxidation Catalyst) & ASC (Ammonia Slip Catalyst) – support full emissions compliance
These systems must work seamlessly with silencers to manage back pressure, temperature, and acoustic performance.
The Challenge: Emissions Reduction and Noise Control
While emissions systems are essential for Stage V compliance, they introduce new challenges, including:
- Increased exhaust back pressure
- Higher exhaust temperatures
- Changes to exhaust acoustics
- Space and installation constraints
If emissions equipment and silencers are designed separately, systems can become inefficient, noisy, or difficult to maintain. IMS addresses this by designing integrated silencer and emissions systems that work together from the outset.
Integrated Silencer Systems: The IMS Approach
IMS designs integrated exhaust systems where noise reduction and emissions control are engineered together. Key features include:
- Proven silencers for industrial to super-critical noise reduction
- Integrated SCR and DPF for Stage V compliance
- Electronic controls and OBD for monitoring and reporting
- Compact, modular design for generators, plant rooms, and marine applications
By combining these technologies in a single system, IMS ensures reliable compliance without compromising engine efficiency or acoustic performance.
Benefits of Integrated Stage V Solutions
- Simplified compliance – one system meets emissions and noise regulations
- Optimised performance – controlled back pressure protects engines
- Turnkey delivery – design, manufacture, installation, and commissioning
- Space-efficient – modular, easy-to-install solutions
- Lower long-term costs – reduced maintenance and downtime
Applications
IMS Stage V systems are used in:
- Power generation and industrial plants
- Construction and NRMM equipment
- Marine and offshore vessels
Each system is bespoke, designed around the engine, duty cycle, and site-specific requirements.
Conclusion
Stage V compliance isn’t just about emissions — it requires a fully engineered exhaust system balancing emissions, noise, and performance.
By integrating traditional silencing with SCR, DPF, DOC, and advanced control systems, Industrial and Marine Silencers Ltd delivers future-ready, turnkey solutions that simplify compliance, reduce risk, and maintain reliability.
