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Company News About What is CDPF? How is it Different from a Regular DPF?
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What is CDPF? How is it Different from a Regular DPF?

2025-07-15
Latest company news about What is CDPF? How is it Different from a Regular DPF?

CDPF, short for Catalytic Diesel Particulate Filter, is an advanced emission control device that combines particulate filtration and catalytic oxidation in one system. It traps diesel particulate matter (PM) from exhaust gases and also facilitates their combustion at lower temperatures thanks to the presence of a catalytic coating.

Compared to a standard DPF (Diesel Particulate Filter), the CDPF features a precious metal catalytic coating—typically platinum (Pt) or palladium (Pd)—which significantly enhances regeneration efficiency and emission performance.

Key Differences:

  1. Lower Regeneration Temperature: CDPFs regenerate passively at 250–300°C, while standard DPFs often require active heating or high load conditions.

  2. Higher Purification Efficiency: The catalytic function helps oxidize not only PM but also part of NO into NO₂, improving total exhaust aftertreatment.

  3. Longer Service Life: More effective and frequent regeneration prevents clogging and prolongs filter life.

  4. Wider Application Scope: Especially suitable for city buses, off-road machinery, and low-speed diesel vehicles.

Wuxi Grace Environmental Technology CO,.LTD
products

Catalyst DPF

Three Way Catalytic Converter

SCR Denox Catalyst

Honeycomb Catalyst

DPF Diesel Particulate Filter

Metallic Catalyst Substrates

VOC Catalyst

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