Understanding Emission

What happens when the emissions from the engine flow through the exhaust system? What characterises the different emissions and how can they be cleaned? Below you find an overview illustration with explanations.

Emissions from the Engine

Nitrogen Oxides (NOx)
• Nitrogen oxides consist of NO & NO2 and are created in connection with the air intake and convert into nitrate
• Very poisonous for people and leads to smog formation

Particles (PM)
• Smog formation, carcinogenic
• Organic/inorganic. Very unhealthy for people
• Can be reduced by a particulate filter system, either DiPEX® (cordierite filter), DiSiC® (silicon carbide filter) or DiDOC+® (open partial filter)

Hydrocarbon (HC)
• Poisonous, carcinogenic, smog formation
• Can be oxidised by a precious metal catalyst
• Converts into CO2 and water
• Can be reduced by a particulate filter system, either DiPEX® (cordierite filter), DiSiC® (silicon carbide filter) or DiDOC+® (open partial filter)

Carbon Monoxide (CO)
• Acutely poisonous
• Can be oxidised by a precious metal catalyst
• Converts into CO2
• Can be reduced by a particulate filter system, either DiPEX® (cordierite filter), DiSiC® (silicon carbide filter) or DiDOC+® (open partial filter) 

Dinex Active Regeneration (AR) System
An extra burner system providing higher temperature in the exhaust stream. This ensures that the Dinex particulate filter can always clean the particles, even if you have low temperatures in the exhaust due to the driving conditions of the vehicle.

Dinex Particulate Filter
Cleans the exhaust gas by 95-98% of PM, CO and HC. The filter is a ceramic unit coated with either platinum or another coating formula. In some cases, if the vehicle is a very old Pre-Euro 1 classification, it is necessary to add an extra front catalytic unit to ensure that the old vehicle cleans the emission in the expected way. 

Dinex SCR Catalyst Filter
Cleans the exhaust gas of NOx by 80-95%. The SCR catalyst is a ceramic coated unit. For the SCR to work it is necessary to inject urea “Adblue” into the exhaust stream by using a pump and control system. 

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