Metal Honeycomb Substrate

Innovative Metal Honeycomb Substrate Solutions for Modern Diesel Emission Control

The evolution of metal honeycomb substrates represents a quantum leap in diesel exhaust purification technology, particularly in addressing the challenges posed by China's Stage VI and equivalent global emission standards. These engineered substrates now form the critical foundation for three principal aftertreatment components, each demonstrating remarkable efficiency in pollutant conversion.

Core Component Analysis

Diesel Oxidation Catalysts (DOC) Systems

Utilizing FeCrAl alloy substrates with 400-600 cells per inch (CPI) density

Platinum/palladium coated surfaces achieve 95% conversion efficiency for CO/HC at 180-400°C operating range

Essential for heavy-duty truck applications requiring urea SCR system integration

Selective Catalytic Reduction (SCR) Carriers

Copper-zeolite coated variants demonstrate >90% NOx reduction between 300-500°C

30% faster thermal response versus ceramic alternatives enables immediate cold-start functionality

Precision-engineered flow channels ensure optimal ammonia distribution

Particulate Oxidation Catalysts (POC/DPF)

Dual-layer 400cpsi metal filters capture ≥98% of PM2.5 particulates

Controlled regeneration at 650°C maintains backpressure increase below 4.8kPa

Asymmetric cell structure design enhances soot oxidation efficiency

Technical Superiority and Comparative Advantages

Thermal management: Sustains performance across extreme temperature gradients

Mechanical durability: Withstands vibration frequencies up to 200Hz in heavy-duty applications

Chemical stability: Resists sulfur poisoning and thermal degradation

As emission regulations approach near-zero tolerance levels, metal honeycomb substrates continue to redefine the boundaries of diesel aftertreatment technology. Their unparalleled combination of thermal, mechanical, and catalytic properties positions them as indispensable components in the transition towards sustainable heavy-duty mobility. Ongoing material science breakthroughs promise further enhancements in emission control efficiency and system longevity.