Rush Exhaust Purification – Catalytic Converter

All About Forklift Catalytic Converters

Exhaust gases produced by petrol, diesel and gas, contain unburned hydrocarbons, carbon monoxide and aldehydes. The catalytic exhaust uses the chemical conversion performed by catalysis and transforms unburned hydrocarbons  (HC), carbon monoxide (CO) and the aldehydes into non-toxic carbon dioxide and water. The catalyst is entirely supported on a metallic honeycomb to which optimized amounts of noble metals are employed (platinum, palladium and rhodium). The Advantages:
  • Reduced back pressure since the metallic honeycomb walls are thinner (0.04mm) as compared to the ceramic version (0.15mm).
  • Smaller overall size since the reduced catalytic mass
  • In contrast to ceramic honeycomb, metal honeycomb is far more robust and does not suffer from irreparable fractures or breaks created by impact
  • Metallic honeycomb reaches higher temperatures more quickly than ceramic due to the higher conductivity of metal. This provides high efficiency even in the event of intermittent use of the unit
Maintenance: Due to high temperature, the catalyst does not need planned maintenance. However, it is suggested to clean the catalyst every 500 hours. This requires dismounting of the purifier and soaking the catalyst in hot soapy water for 5 hours. The catalyst may be re-installed after it has dried thoroughly. The catalyst does not act as a silencer. The original silencer is left in place. The purifier is installed as close as possible to the exhaust manifold where the exhaust temperature is highest. The catalyst becomes operational at 180/200 degrees and at 250, a 90% elimination of pollutants is achieved. Since the catalyst employs a catalytic reaction, the life of the catalyst is theoretically unlimited. However, since operating conditions are not ideal, poorly tuned engine vibration and abrasive action of fumes to the honeycomb support all reduce the life of the catalyst. As a result, the catalyst requires replacement after approximately 10 000 hours of use.

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