Combustion Engine running = Exhaust = Emissions
Type of emission
Noise
Treament
Silencers
Type of emission
HC
Treament
Oxicat (Oxidation catalyst)
Type of emission
CO
Treament
Oxicat (Oxidation catalyst)
Type of emission
PM
Treament
Diesel Particle Filter (DPF)
Type of emission
NOx
Treament
Selective Catalytic Reduction SCR (catalyst)
Type of emission
Sulphur
Treament
Scrubber/Better fuel quality
Type of emission
Heat
Treament
None/Cooler/Water Injection/Heat Recovery
Exhaust technologies
Silencer type
Standard or tailormade silencers
Description
Absorptive silencers
Reactive silencers
Combination silencers Silent boxes
Reactive silencers
Combination silencers Silent boxes
Reduction
Noise reduction: 25-75 dB
Emission reduction: none
Emission reduction: none
Remarks
Mild steel
Stainless
With or without spark arrestor
Tailormade: All shapes and materials.
Stainless
With or without spark arrestor
Tailormade: All shapes and materials.
Silencer type
Green Line Silencers Type GLS
Description
Silencers with integrated catalyst (Oxicat)
Combination of silencer and catalyst.
Combination of silencer and catalyst.
Reduction
Noise reduction: 25-75 dB
Emission reductions:
CO: up to 90%
HC: up to 75%
Particles up to 30% (in opacity).
Emission reductions:
CO: up to 90%
HC: up to 75%
Particles up to 30% (in opacity).
Remarks
Easy installation
No extra space necessary
High performance of catalyst due to placing in the centre of the exhaust gas.
No extra space necessary
High performance of catalyst due to placing in the centre of the exhaust gas.
Silencer type
DPF
Description
Silencers with integrated DPF (Special coating)
Combination of silencer, catalyst and DPF
Regeneration of filters in different ways.
Combination of silencer, catalyst and DPF
Regeneration of filters in different ways.
Reduction
Noise reduction: 25-75 dB
Emission reductions:
NOx: None
CO: Up to 90%
HC: Up to 75%
Particles: Min. 95%.
Emission reductions:
NOx: None
CO: Up to 90%
HC: Up to 75%
Particles: Min. 95%.
Remarks
High performance systems except NOx + Sulphur
Relatively high exhaust temp. required for regeneration
Bypass valve as part of construction.
Relatively high exhaust temp. required for regeneration
Bypass valve as part of construction.
Silencer type
SCR systems
Description
Combination of silencer, catalyst and a DPF filter
Regeneration of filters in different ways
Injection of Urea for NOx reduction.
Regeneration of filters in different ways
Injection of Urea for NOx reduction.
Reduction
Noise reduction: 25-75 dB
Emission reductions:
NOx: Up to 90%
CO: Up to xx% (Option)
HC: Up to xx% (Option)
Particles: Up to xx% (Option)
Emission reductions:
NOx: Up to 90%
CO: Up to xx% (Option)
HC: Up to xx% (Option)
Particles: Up to xx% (Option)
Remarks
High performance system, special on NOx.
Complicated systems with Urea injection and complete Control system.
Limited reduction on particles.
Complicated systems with Urea injection and complete Control system.
Limited reduction on particles.
Silencer type
DPF/In combination
Description
Silencer with integrated catalyst/soot filters
Combination of silencer, catalyst and a soot filter
Regeneration of filters in different ways. Injection of Urea for NOx reduction
Combination of silencer, catalyst and a soot filter
Regeneration of filters in different ways. Injection of Urea for NOx reduction
Reduction
Noise reduction: 25-75 dB
Emission reductions:
NOx: Up to 90%
CO: Up to 90%
HC: Up to 75%
Particles: Min. 95%
Emission reductions:
NOx: Up to 90%
CO: Up to 90%
HC: Up to 75%
Particles: Min. 95%
Remarks
High performance system, also on NOx.
Relatively high exhaust temp. required for regeneration.
Bypass valve part of construction.
Complicated systems with Urea injection.
Relatively high exhaust temp. required for regeneration.
Bypass valve part of construction.
Complicated systems with Urea injection.
