Dongfeng Xinjiang truck parts afterprocessing insulation panel assembly 1204025-T5WF02Y

Built to maintain the aftertreatment system’s optimal operating temperature (220-420℃)—critical for reducing emissions and ensuring catalyst efficiency—this insulation panel features a multi-layer thermal barrier structure. The core consists of 32mm-thick high-purity ceramic fiber (thermal conductivity ≤0.035 W/(m·K)), which blocks heat transfer while remaining lightweight. The outer layer is a 0.9mm-thick aluminized steel sheet that reflects up to 92% of radiant heat, preventing heat loss to the surrounding environment. The inner layer is a heat-resistant silica felt (withstands continuous temperatures up to 650℃) that seals gaps and absorbs residual heat. This design reduces heat loss from the aftertreatment system by 80% compared to uninsulated setups, allowing the SCR catalyst to reach activation temperature 4 minutes faster after engine startup and maintaining efficiency even during low-load driving (e.g., city traffic)

Designed to shield both the aftertreatment system and adjacent chassis parts, the insulation panel assembly integrates robust structural protection. The aluminized steel outer shell is reinforced with 1.3mm-thick longitudinal and transverse ribs, which distribute impact forces and prevent dents from road debris (e.g., stones, gravel) or minor collisions—avoiding compression of the ceramic fiber core (a common cause of reduced insulation performance). The panel’s edges are folded and sealed with high-temperature silicone gaskets (resistant to 500℃), blocking dust, water, and road salt from infiltrating the insulation layer. Additionally, the panel acts as a heat shield, lowering the temperature of nearby components (e.g., fuel lines, wiring harnesses, and brake hoses) by 50-70℃—preventing heat-related degradation (e.g., hose hardening, wire insulation melting) and reducing fire risks from flammable materials (e.g., leaves, oil rags) coming into contact with the hot aftertreatment housing

Engineered to withstand the harsh operating conditions of commercial trucks—including extreme temperatures, corrosion, and mechanical wear—the insulation panel assembly delivers long-term reliability. The aluminized steel shell undergoes a zinc-nickel plating process (12μm thickness) followed by a clear chromate passivation layer, passing 1000-hour salt spray testing (per ASTM B117) with no rust or coating peeling. The ceramic fiber core is treated with a hydrophobic agent, preventing moisture absorption (which can reduce insulation efficiency and cause mold growth) even in high-humidity environments. The silica felt inner layer is resistant to thermal shock, maintaining integrity after 500+ cycles of heating (to 600℃) and cooling (to -40℃). This durability ensures the panel retains its insulation performance for over 6 years, even in demanding scenarios: freezing northern winters, hot desert climates, or coastal areas with high salt concentrations

Designed for efficient installation and maintenance, the insulation panel assembly features precision manufacturing and user-friendly design. All mounting holes are drilled with a concentricity error of ≤0.1mm, ensuring perfect alignment with the aftertreatment housing’s pre-threaded studs—eliminating the need for re-drilling or adjustment. The package includes 14 stainless steel M6×22 bolts (grade 8.8), lock washers, and heat-resistant gaskets (compatible with high-temperature environments). Installation steps are simple: align the panel with the aftertreatment system, insert the bolts through the pre-drilled holes, and tighten to the recommended torque (16-21N·m) using a standard socket wrench. No specialized tools (e.g., cutting equipment, welding machines) are required, and a professional technician can complete installation in 35 minutes or less. The panel’s lightweight design (5.2kg) reduces handling fatigue, and its modular structure allows for easy removal during aftertreatment system maintenance (e.g., DPF cleaning)—minimizing truck downtime for fleet operators